CONVERTIBLE ITEM

Abstract

A convertible item of furniture (100) comprising: a plurality of shelf units (1), wherein each said shelf unit (1) comprises a substantially horizontally extending leave (10) and a leave support (11) for supporting the leave (10); a linkage system (2) comprising linkage members (21, 22) pivotally connected to each said leave support (11) such that the linkage members (21, 22) are able to pivot in unison and parallel with each other between (i) a shelf configuration whereby the linkage members (21, 22) extend substantially vertically and said leaves (10) extend in spaced substantially horizontal parallel planes above one another, and (ii) a substantially flat surface configuration whereby the linkage members (21, 22) extend substantially horizontally and said leaves (10) are positioned next to one another to form a substantially flat surface having a front end and a rear end; and, at least one surface support (3) for supporting the substantially flat surface.

Claims

1. (canceled)

2. (canceled)

3. (canceled)

4. (canceled)

5. A convertible item comprising: a plurality of shelf units, wherein each said shelf unit comprises a substantially horizontally extending leave and at least one leave support for supporting the leave; a drive system connected to each said leave support such that the leaves remain substantially horizontal when the shelf units are moved between (1) a shelf configuration whereby the leaves extend in spaced substantially horizontal parallel planes above one another, and (2) a substantially horizontal surface configuration whereby the leaves are positioned next to one another to form a substantially horizontal surface; and at least one surface support for supporting the shelf units and drive system.

6. The convertible item of claim 5, wherein the drive system comprises: a respective shaft connected to each said leave support, wherein each said shaft comprises a leave support connecting end and a working region; and at least one drive connected to the working regions of the shafts, such that the shafts are rotatable in unison.

7. The convertible item of claim 6, wherein the at least one drive is selected from the group consisting of: at least one rigid linkage member connected to the working regions of the shafts by way of pivot pins or fastening pins; two rigid linkage members connected to the working regions of the shafts by way of pivot pins or fastening pins; at least one worm gear which engages the working regions of the shafts, and each said working region is in the form of a spur gear that meshes with the at least one worm gear; at least one bevel gear which engages the working regions of the shafts, and each said working region is in the form of a spur gear that meshes with the at least one bevel gear; at least one pair of racks that engage the working regions of the shafts, and each said working region is in the form of a pinion that meshes with and between the at least one pair of racks; a plurality of motors, each of which engages a said working region of the shaft; and at least one chain or belt drive that engages the working regions of the shafts, and each said working region is in the form of a sprocket that meshes with the at least one chain or belt drive.

8. The convertible item of claim 7, wherein the drive comprises two rigid linkage members connected to the working regions of the shafts by way of pivot pins or fastening pins.

9. The convertible item of claim 7, wherein the drive comprises at least one chain or belt drive that engages the working regions of the shafts, and each said working region is in the form of a sprocket that meshes with the at least one chain or belt drive.

10. The convertible item of claim 6, wherein the leave is discontinuous, being in separate panel sections, the drive system comprises a frame member extending between adjacent said panel sections, each said panel section comprises a said leave support, the drive extends within the frame member, the shaft extends through the frame member from one leave support to the other of the adjacent panel sections, and the working region of the shaft is located within the frame member.

11. The convertible item of claim 5, wherein the surface support is in the form of a leg assembly comprising legs pivotally connected to the drive system and/or at least one said shelf unit.

12. The convertible item of claim 5, wherein the convertible item comprises an anti-tip mechanism so that the item is always balanced when moving between the shelf configuration and the substantially horizontal surface configuration.

13. The convertible item of claim 12, wherein the anti-tip mechanism comprises the at least one surface support comprising a leg assembly pivotally connected to the drive system and/or at least one said shelf unit, whereby legs of the leg assembly extend apart from each other when pivoting to the substantially horizontal surface configuration, and the legs move closer together when pivoting to the shelf configuration.

14. The convertible item of claim 5, wherein the drive system comprises at least one mounting frame or frame member extending alongside the leave supports, and said shafts extend through a wall of the mounting frame or frame member such that the working regions and leave supports are located at opposite sides of the wall.

15. The convertible item of claim 14, wherein the at least one mounting frame or frame member is of hollow or tubular construction, and the working region of each shaft is located within the hollow interior.

16. The convertible item of claim 5, wherein the convertible item comprises one or more of the shelf units having a secondary shelf located beneath the substantially horizontally extending leave.

17. The convertible item of claim 16, wherein the secondary shelf is dimensioned so as to be hidden beneath the substantially horizontal surface formed by the leaves when in the substantially horizontal surface configuration, and the secondary shelf is dimensioned so as to serve as a secondary accessible shelf when in the shelf configuration.

18. The convertible item of claim 5, wherein the surface support is connected to a said shelf unit or said drive system such that there is adequate leg room for a person seated at the substantially horizontal surface.

19. The convertible item of claim 5, wherein the convertible item is in the form of a convertible table and shelves.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0178] Preferred features, embodiments and variations of the invention may be discerned from the following Description of Embodiments which provides sufficient information for those skilled in the art to perform the invention. The Description of Embodiments is not to be regarded as limiting the scope of the preceding Summary of the Invention in any way. The Description of Embodiments will make reference to a number of drawings as follows:

[0179] FIG. 1 is a top front perspective view of a convertible table and shelves in a table configuration, according to a first embodiment of the present invention.

[0180] FIG. 2 is a front perspective view of the convertible table and shelves shown in FIG. 1 but in a shelf configuration.

[0181] FIG. 3 is a front perspective view of the convertible table and shelves shown in FIG. 1 when being transitioned between the table and shelf configurations.

[0182] FIG. 4 is a front view of the convertible table and shelves shown in FIG. 1 when in a table configuration.

[0183] FIG. 5 is a side elevation view of the convertible table and shelves shown in FIG. 1 when in a table configuration.

[0184] FIG. 6 is a front view of the convertible table and shelves shown in FIG. 2 when in a shelf configuration.

[0185] FIG. 7 is a side elevation view of the convertible table and shelves shown in FIG. 2 when in a shelf configuration.

[0186] FIG. 8 is a rear perspective view of the convertible table and shelves shown in FIG. 1 when being transitioned between the table and shelf configurations.

[0187] FIG. 9 is a side elevation view of the convertible table and shelves shown in FIG. 1 when being transitioned between the table and shelf configurations.

[0188] FIG. 10 is a top front perspective view of a convertible table and shelves in a table configuration, according to a second embodiment of the present invention.

[0189] FIG. 11 is a front perspective view of the convertible table and shelves shown in FIG. 10 but in a shelf configuration.

[0190] FIG. 12 is a front perspective view of the convertible table and shelves shown in FIG. 10 when being transitioned between the table and shelf configurations.

[0191] FIG. 13 is a rear view of the convertible table and shelves shown in FIG. 10 when in a table configuration.

[0192] FIG. 14 is a side elevation view of the convertible table and shelves shown in FIG. 10 when in a table configuration.

[0193] FIG. 15 is a front view of the convertible table and shelves shown in FIG. 11 when in a shelf configuration.

[0194] FIG. 16 is a side elevation view of the convertible table and shelves shown in FIG. 11 when in a shelf configuration.

[0195] FIG. 17 is a rear view of the convertible table and shelves shown in FIG. 10 when in a shelf configuration.

[0196] FIG. 18 is a rear perspective view of the convertible table and shelves shown in FIG. 10 when being transitioned between the table and shelf configurations.

[0197] FIG. 19 is a side elevation view of the convertible table and shelves shown in FIG. 10 when being transitioned between the table and shelf configurations.

[0198] FIG. 20 is a top front perspective view of a convertible bed/mattress base and shelves in a base configuration, according to a third embodiment of the present invention.

[0199] FIG. 21 is a front perspective view of the convertible bed/mattress base and shelves shown in FIG. 20 but in a shelf configuration.

[0200] FIG. 22 is a front perspective view of the convertible bed/mattress base and shelves shown in FIG. 20 when being transitioned between the base and shelf configurations.

[0201] FIG. 23 is a front view of the convertible bed/mattress base and shelves shown in FIG. 20 when in a base configuration.

[0202] FIG. 24 is a side elevation view of the convertible bed/mattress base and shelves shown in FIG. 20 when in a base configuration.

[0203] FIG. 25 is a front view of the convertible bed/mattress base and shelves shown in FIG. 20 when in a shelf configuration.

[0204] FIG. 26 is a side elevation view of the convertible bed/mattress base and shelves shown in FIG. 20 when in a shelf configuration.

[0205] FIG. 27 is a side elevation view of the convertible bed/mattress base and shelves shown in FIG. 20 when being transitioned between the base and shelf configurations.

[0206] FIG. 28 is a front perspective view of a convertible bed/mattress base and shelves in a shelf configuration, similar to that shown in FIG. 20, according to a fourth embodiment of the present invention.

[0207] FIG. 29 is a perspective view of a convertible workbench and shelves in a shelf configuration, installed in a vehicle, similar to the convertible bed/mattress base and shelves shown in FIG. 20, according to a fifth embodiment of the present invention.

[0208] FIG. 30 is a perspective view of the convertible workbench and shelves shown in FIG. 29 when being transitioned between the workbench and shelf configurations.

[0209] FIG. 31 is a perspective view of the convertible workbench and shelves shown in FIG. 29 but in a workbench configuration.

[0210] FIG. 32 is a perspective view of a shelf unit of part of a convertible item of furniture, according to a sixth embodiment of the present invention.

[0211] FIG. 33 is a perspective view of a shelf unit of part of a convertible item of furniture, according to a seventh embodiment of the present invention.

[0212] FIG. 34 is a top front perspective view of a convertible desk and shelves in a desk configuration, according to an eighth embodiment of the present invention.

[0213] FIG. 35 is a front perspective view of the convertible desk and shelves shown in FIG. 34 but in a shelf configuration.

[0214] FIG. 36 is a front perspective view of the convertible desk and shelves shown in FIG. 34 when being transitioned between the desk and shelf configurations.

[0215] FIG. 37 is a front view of the convertible desk and shelves shown in FIG. 34 when in a desk configuration.

[0216] FIG. 38 is a side elevation view of the convertible desk and shelves shown in FIG. 34 when in a desk configuration.

[0217] FIG. 39 is a front view of the convertible desk and shelves shown in FIG. 34 when in a shelf configuration.

[0218] FIG. 40 is a side elevation view of the convertible desk and shelves shown in FIG. 34 when in a shelf configuration.

[0219] FIG. 41 is a side elevation view of the convertible desk and shelves shown in FIG. 34 when being transitioned between the desk and shelf configurations.

[0220] FIG. 42 is a top front perspective view of a convertible desk and shelves in a desk configuration similar to that shown in FIG. 34, according to a ninth embodiment of the present invention.

[0221] FIG. 43 is a top front perspective view of a convertible gaming table and shelves in a gaming table configuration, according to a tenth embodiment of the present invention.

[0222] FIG. 44 is a front perspective view of the convertible gaming table and shelves shown in FIG. 43 but in a shelf configuration.

[0223] FIG. 45 is a front perspective view of the convertible gaming table and shelves shown in FIG. 43 when being transitioned between the gaming table and shelf configurations.

[0224] FIG. 46 is a front view of the convertible gaming table and shelves shown in FIG. 43 when in a gaming table configuration.

[0225] FIG. 47 is a side elevation view of the convertible gaming table and shelves shown in FIG. 43 when in a gaming table configuration.

[0226] FIG. 48 is a front view of the convertible gaming table and shelves shown in FIG. 43 when in a shelf configuration.

[0227] FIG. 49 is a side elevation view of the convertible gaming table and shelves shown in FIG. 43 when in a shelf configuration.

[0228] FIG. 50 is a side elevation view of the convertible gaming table and shelves shown in FIG. 43 when being transitioned between the desk and shelf configurations.

[0229] FIG. 51 is a top front perspective view of a convertible desk and shelves in a desk configuration, according to an eleventh embodiment of the present invention.

[0230] FIG. 52 is a front perspective view of the convertible desk and shelves shown in FIG. 51 but in a shelf configuration.

[0231] FIG. 53 is a front perspective view of the convertible desk and shelves shown in FIG. 51 when being transitioned between the desk and shelf configurations.

[0232] FIG. 54 is a front view of the convertible desk and shelves shown in FIG. 51 when in a desk configuration.

[0233] FIG. 55 is a side elevation view of the convertible desk and shelves shown in FIG. 51 when in a desk configuration.

[0234] FIG. 56 is a front view of the convertible desk and shelves shown in FIG. 51 when in a shelf configuration.

[0235] FIG. 57 is a side elevation view of the convertible desk and shelves shown in FIG. 51 when in a shelf configuration.

[0236] FIG. 58 is a partially detailed side elevation view of the convertible desk and shelves shown in FIG. 51 when being transitioned between the desk and shelf configurations.

[0237] FIG. 59 is a bottom perspective view of part of a convertible item in a substantially horizontal surface configuration, according to an embodiment of the present invention.

[0238] FIG. 60 is a side perspective view of that shown in FIG. 59 but almost in a shelf configuration, according to an embodiment of the present invention.

[0239] FIG. 61 is a bottom perspective view of part of a convertible item in a substantially horizontal surface configuration, according to an embodiment of the present invention.

[0240] FIG. 62 is a bottom perspective view of part of a convertible item not quite in the horizontal surface configuration, according to an embodiment of the present invention.

[0241] FIG. 63 is a bottom perspective view of part of a convertible item not quite in the horizontal surface configuration, according to an embodiment of the present invention.

[0242] FIG. 64 is a top perspective view of part of a convertible item not quite in the horizontal surface configuration, according to an embodiment of the present invention.

[0243] FIG. 65 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0244] FIG. 66 is a side perspective view of part of a convertible item not quite in the horizontal surface configuration, according to an embodiment of the present invention.

[0245] FIG. 67 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0246] FIG. 68 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0247] FIG. 69 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0248] FIG. 70 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0249] FIG. 71 is a side perspective view of part of a convertible item not quite in the shelf configuration, according to an embodiment of the present invention.

[0250] FIG. 72 is a side view of a convertible item of furniture (garage table/workbench) in the shelf configuration, according to an embodiment of the present invention.

[0251] FIG. 73 is a side view of the convertible item of furniture of FIG. 72, moving out of the shelf configuration, according to an embodiment of the present invention.

[0252] FIG. 74 is a side view of the convertible item of furniture of FIG. 72, in the horizontal surface configuration, according to an embodiment of the present invention.

[0253] FIG. 75 is a perspective view of that shown in FIG. 73.

[0254] FIG. 76 is top side perspective view of the item shown in FIG. 74.

[0255] FIG. 77 is a detailed/sectional side view of a convertible item of furniture (dining table), in the horizontal surface configuration, according to an embodiment of the present invention.

[0256] FIG. 78 shows the item of FIG. 77, but in the shelf configuration.

[0257] FIG. 79 is a perspective view of the item shown in FIG. 78, except without an anti-tip support leg, according to an embodiment of the present invention.

[0258] FIG. 80 is a perspective view of the item shown in FIG. 79, except shown in the horizontal surface configuration.

[0259] FIG. 81 is a rear perspective view of an item shown in the shelf configuration, according to another embodiment of the present invention.

[0260] FIG. 82 is a top perspective view of the item shown in FIG. 81, except shown in the substantially horizontal surface configuration.

[0261] FIG. 83 is a top side perspective view of a convertible item, according to another embodiment of the present invention.

[0262] FIG. 84 is an enlarged view of part of the item shown in FIG. 83.

[0263] FIG. 85 is a side perspective view of a convertible item, according to another embodiment of the present invention.

[0264] FIG. 86 is an enlarged view of part of the item shown in FIG. 85.

[0265] FIG. 87 is a side perspective view of a convertible item, according to another embodiment of the present invention.

[0266] FIG. 88 is an enlarged view of part of the item shown in FIG. 87.

[0267] FIG. 89 is a side perspective view of a convertible item (pallet racking system), in a shelf configuration, according to an embodiment of the present invention.

[0268] FIG. 90 shows the item of FIG. 89, but in transition between different configurations.

[0269] FIG. 91 is a perspective view of the item shown in FIG. 89, except shown in a horizontal surface configuration.

[0270] FIG. 92 is a rear perspective view of a convertible item, according to another embodiment of the present invention.

[0271] FIG. 93 is a side view of the convertible item of FIG. 92, in a shelf configuration.

[0272] FIG. 94 is a side view of the convertible item of FIG. 92, when moving from the shelf configuration.

[0273] FIG. 95 is a side view of the convertible item of FIG. 92, in a horizontal surface configuration.

DESCRIPTION OF EMBODIMENTS

[0274] In the figures like reference numerals refer to like features.

[0275] Referring first to FIGS. 1-9, there is shown a convertible table and shelves 100 that is configurable either as a table having a table top 101 (ie. substantially flat surface) as seen in FIG. 1 or shelves as seen in FIG. 2.

[0276] The convertible table and shelves 100 includes first 1a, second 1b, third 1c, fourth 1d, fifth 1e, sixth 1f and seventh 1g shelf units 1, a linkage system 2 comprising a primary linkage member pair 21a, 21b and a secondary linkage member pair 22a, 22b pivotally connected to each shelf unit 1, a front table leg assembly 3 connected to the third shelf unit 1c, and a rear table leg assembly 4 connected to the sixth shelf unit 1f.

[0277] Each shelf unit 1 comprises a substantially horizontally extending leave 10a-10g and a leave support including a pair of spaced apart side walls 11a-11g extending downwardly from the leave 10a-10g and a rear wall 12a-12g extending between the leave 10a-10g and the side walls 11a-11g. The side walls 11a-11g extend parallel with the linkage members 21, 22 and perpendicularly of the leaves 10. The rear walls 12 extend vertically between the side walls 11.

[0278] Shelf units 1b, 1c, 1d, 1e and 1f each have a secondary shelf 5b-5f located beneath the main leave 10. The secondary shelf 5 is dimensioned so as to be hidden beneath the table top 101 formed by the main leaves 10 of the shelf units 1 when in the table configuration, and the secondary shelf 5 is dimensioned so as to serve as an additional accessible shelf when in the shelf configuration.

[0279] The shelf units 1 and secondary shelves 5 are wooden panels or boards (in some embodiments laminated) fastened together with mechanical fasteners such as screws and optionally non-mechanical fasteners such as adhesive.

[0280] Each secondary shelf 5 includes a substantially horizontally extending secondary leave 50b-50f and a pair of spaced apart secondary side walls 51b-51f (not all of which have been labelled) extending between the main leave 10 and the secondary leave 50. The rear wall 12 of the shelf unit 1 extends to the secondary leave 50.

[0281] The first 1a and seventh 1g shelf units 1 do not have a secondary shelf 5 so that a person seated at the front 102 or rear end 103 of the table top 101 has leg/knee room beneath the table top 101. Rear walls 12b-12f are arched so as to provide leg/knee room beneath the tabletop 101. (The first 1a and seventh 1g shelf units 1 do have side walls but no leaves.)

[0282] Each of the primary linkage member pair 21a, 21b and each of the secondary linkage member pair 22a, 22b is a straight elongate tubular member of rectangular cross-section. The tubular members 22 are made of metal. These tubular members 22 have openings through which pivot pins/fastening pins 24 (only some of which are labelled in FIG. 5) extend and fasten within a side wall 11 of a shelf unit 1. In this way, the tubular members 22 are pinned for pivotal movement relative to the shelf units 1.

[0283] The primary 21 and secondary 22 linkage member pairs are able to pivot in unison and parallel with each other between (1) a shelf configuration (see FIGS. 2, 6 and 7) whereby the primary 21 and secondary 22 linkage member pairs extend substantially vertically and the leaves 10, 50 extend in spaced substantially horizontal parallel planes above one another, and (2) a table configuration (see FIGS. 1, 4 and 5) whereby the primary 21 and secondary 22 linkage member pairs extend substantially horizontally and the leaves 10 extend next to one another in substantially the one and the same substantially horizontal place to form a table top 101.

[0284] The secondary linkage member pair 22 is part of table frame (comprising elongate tubular members) that further extends around a periphery of the table top 101, as seen in FIG. 1.

[0285] The front table leg assembly 3 includes a pair of vertically extending legs 30, a foot 31 extending perpendicularly and forwardly from a lower region of each leg 30, a cross piece 32 extending between the legs 30, and a lateral mount 33 extending laterally from an upper region of each leg 30. Each leg 30, foot 31, cross piece 32 and mount 33 is a straight elongate tubular member of rectangular cross-section. Each foot 31 has a pair of pinned wheels 34, enabling the table 100 when in the shelf configuration to be wheeled from one location to another. The mount 33 and leg 30 are each connected to the third shelf unit's rear wall 12c and leave 10c by way of screws.

[0286] The rear table leg assembly 4 includes a pair of vertically extending legs 40 and a cross piece 41 extending between the legs 40. Each leg 40 and cross piece 41 is a straight elongate tubular member of rectangular cross-section. Each leg 40 is connected to the sixth shelf unit's rear wall 12f by way of screws.

[0287] Although not shown, the convertible table and shelves 100 includes a locking mechanism for locking the rear table leg assembly 4 to a shelf unit 1 such that there is no possibility of the shelf units 1 swinging downwardly by accident into the table configuration. In one embodiment a locking pin extends from a vertically extending leg 40 and the pin is releasably retained by a latch that is mounted to a shelf unit 1.

[0288] The convertible table and shelves 100 can also have a counterweight (not illustrated) connected to the first shelf unit 1a for helping raise the shelf units 1 into the shelf configuration.

[0289] In use, the configurable table and shelves 100 can be configured as a table shown in FIG. 1 or configured as shelves as shown in FIG. 7. In order to change from the table configuration to the shelf configuration, a person raises the rear end 103 of the table top 101 so that the shelf units 1 swing into the shelf configuration shown in FIG. 7. When in the shelf configuration, the feet 31 of the front table leg assembly 3 extend beneath the shelf units 1, and the rear table leg assembly 4 is suspended above the ground. The locking mechanism stops the linkage system 2 from pivoting by accident. Moreover, the rear table leg assembly 4 extends in substantially the same vertical plane as the front table leg assembly 3—i.e. in a compact state. When in the shelf configuration, as seen in FIG. 6, articles or items placed on the main leave 10 and secondary leave 50 can be accessed. When in the table configuration, items in the secondary leave 50/secondary shelf 5 are hidden from view beneath the table top 101.

[0290] In this first embodiment the front 3 and rear 4 table leg assemblies are each connected to shelf units 1c, 1f, as opposed to being connected to the linkage members 21, 22. In view of these table leg assemblies 3, 4 being connected at a distance from the periphery of the table top 101/table frame, there is leg room for a person seated at the table top 101 adjacent these shelf units 1c, 1f. The rear wall 12 of each shelf unit 1 and additional shelf 5 is also tapered (arched) so as to provide additional room for that person's knees, as seen in FIG. 4.

[0291] An advantage of the invention according to the first embodiment is that the table leg assemblies 3, 4 are not directly connected to the linkage members 21, 22 and in this way can be recessed relative to the periphery of the table top 101, to provide legroom for a person seated at the table. If, on the other hand, should the table leg assemblies 3, 4 be connected directly to the linkage members 21, 22, then a person seated at that location would not have adequate legroom. This means that the convertible table and shelves can be used to seat more than two people at any given time.

[0292] Another advantage of the invention according to the first embodiment is that the secondary shelf 5 can be used to hide items or articles when in the table configuration, but when in the shelf configuration those hidden articles or items can be accessed. This means that the convertible table and shelves can be conveniently used as a dining table, whereby items can be hidden when dining.

[0293] Another advantage of the present invention is that the table leg assemblies 3, 4 are not located midway between the front and rear ends of the table top 101. This means that the invention can accommodate further shelf units, if desired.

[0294] Yet another advantage of the invention according to the first embodiment is that in the shelf configuration it has a narrow footprint, which allows it to be placed/stored close against a wall.

[0295] The invention according to the first embodiment overcomes one or more other disadvantages referred to in the Background Section of this specification.

[0296] Referring now to FIGS. 10-19, there is shown a convertible table and shelves 105 that is configurable either as a table having a table top 110 as seen in FIG. 10 or shelves as shown in FIG. 11.

[0297] The convertible table and shelves 105 includes first 6a, second 6b, third 6c, fourth 6d, fifth 6e, sixth 6f and seventh 6g shelf units 6, a linkage system 8 comprising a primary linkage member pair 81 and a secondary linkage member pair 82 pivotally connected to each shelf unit 6, a front table leg assembly 90 connected to the primary linkage member pair 81 at the third shelf unit 6c, a rear table leg assembly 96 connected to the primary linkage member pair 81 at the sixth shelf unit 6f, and a pair of actuators 99 (not shown in all of the Figures).

[0298] Each shelf unit 6 includes a substantially horizontally extending leave 60a-60g and a shelf support including spaced apart side walls 61a-61g extending downwardly from the leave 60, and a rear wall 62a-62g extending between the leave 60 and the side walls 61 (similar to the first embodiment).

[0299] The first shelf unit 6a has a leave 60a having two slits for accommodating the secondary linkage pair 82. The first shelf unit 6a has two pairs of spaced side walls 61a between which the primary 81 and secondary linkage pairs 82 extend. The first shelf unit 6a has a rear wall 62a having two slits for accommodating the secondary linkage pair 82.

[0300] The seventh shelf unit 6g has a leave 60g having two slits for accommodating the secondary linkage pair 82. The seventh shelf unit 6g has two pairs of spaced side walls 61g between which the primary 81 and secondary 82 linkage pairs extend. The seventh shelf unit 6g has a rear wall 62g having two slits for accommodating the secondary linkage pair 82.

[0301] The second 6b, third 6c, fourth 6d, fifth 6e and sixth 6f shelf units 6 are similar to each other in that their leaves 60 are divided into three sections. Clearances between the leave 60 sections accommodate the secondary linkage pair 82. Each rear wall 62 has two slits for accommodating the secondary linkage pair 82. The second 6b, third 6c, fourth 6d, fifth 6e and sixth 6f shelf units 6 each have two pairs of spaced side walls 61 between which the secondary linkage pair 82 extends. These side walls 61 also have linkage-mounting regions between which the primary linkage pairs 81 extend. These linkage-mounting regions extend rearwardly of the rear wall 62.

[0302] The second 6b, third 6c, fourth 6d, fifth 6e and sixth 6f shelf units 6 differ from the others in that they have a secondary shelf 7b-f located beneath the main leave 60. The secondary shelf 7 is dimensioned so as to be hidden beneath the table top 110 formed by the main leaves 60 of the shelf units 6 when in the table configuration, and the secondary shelf 7 is dimensioned so as to serve as an additional accessible shelf when in the shelf configuration. The first 6a and seventh 6g shelf units do not have a secondary shelf so that a person seated at a front or rear end of the table top 110 has adequate leg room beneath the table top 110.

[0303] Each secondary shelf 7 includes a substantially horizontally extending secondary leave 70b-70f and a pair of spaced apart secondary side walls 61 extending between the main leave 60 and the secondary leave 70. The rear wall 62 of the shelf unit 6b-6f extends to the secondary leave 70b-70f. Shelf units 6a ad 6g each have side walls 61a, 61g and a rear wall 62a, 62g but no leave.

[0304] The shelf units 6 and secondary shelves 7 are wooden panels or boards (in some embodiments laminated) fastened together with mechanical fasteners such as screws and optionally non-mechanical fasteners such as adhesive.

[0305] Each member of the primary linkage member pair 81 and each member of the secondary linkage member pair 82 is a straight elongate tubular member of rectangular cross-section. The tubular members 81, 82 are made of metal. These tubular members 81, 82 have openings through which pivot pins/fastening pins/connecting screws extend and further extend into or through the side walls 61 of each shelf unit 1. Some of these are labelled with the numeral 89. Each of members 81 and 82 is pinned between respective adjacent side walls 61 of shelf units 6a, 6b, 6c, 6d, 6e, 6f and 6g. In this way, the tubular members 81, 82 are pinned for pivotal movement relative to the shelf units 6. The primary and secondary linkage member pairs 81, 82 are able to pivot in unison and parallel with each other between (1) the shelf configuration whereby the primary and secondary linkage member pairs 81, 82 extend substantially vertically and the leaves 60 extend in spaced substantially horizontal parallel planes above one another, and (2) the table configuration whereby the primary and secondary linkage member pairs 81, 82 extend substantially horizontally and the leaves 60 extend next to one another in substantially the one and the same substantially horizontal place to form a table top 110.

[0306] The front table leg assembly 90 includes a pair of vertically extending legs 91, a foot 92 extending perpendicularly and forwardly from a lower region of each leg 91, and a cross piece 93 extending between the legs 91. Each leg 91, foot 92 and cross piece 93 is a straight elongate tubular member of rectangular cross-section. Each foot 92 has a pair of pinned wheels 94, enabling the table 105 when in the shelf configuration to be wheeled from one location to another. Each leg 91 is pinned to a respective primary linkage member 81 and further to the third shelf unit's rear wall 62c by way of screws 89.

[0307] The rear table leg assembly 96 includes a pair of vertically extending legs 97 and a cross piece 98 extending between the legs 97. Each leg 97 and cross piece 98 is a straight elongate tubular member of rectangular cross-section. Each leg 97 is pinned to a respective primary linkage member 81 and further to the sixth shelf unit's rear wall 62f by way of screws 89.

[0308] The convertible table 105 can also have a counterweight connected to the first shelf unit 6a for helping raise the shelf units 6 into the shelf configuration.

[0309] The actuators 99 are gas struts and help a person pivot in a controlled manner the shelf units 6 into the shelf configuration or out of the shelf configuration. That is, each actuator 99 can help offset the lift weight and also prevent the shelves 6 from pivoting downwardly too quickly. One end of each actuator 99 is pinned to a vertically extending leg 91. Another end of each actuator 99 is pinned to linkage member 81. In some embodiments (not shown), the actuator is an electric actuator.

[0310] In use, the convertible table and shelves 105 can be configured as a table shown in FIG. 10 or configured as shelves as shown in FIG. 11. In order to change from the table configuration to the shelf configuration, a person raises the rear end of the table top 110 so that the shelf units 6 swing into the shelf configuration shown in FIG. 11. When in the shelf configuration, the feet 92 of the front table leg assembly 90 extend beneath the shelf units 6. Moreover, the rear table leg assembly 96 extends in substantially the same vertical plane as the front table leg assembly 90—i.e. in a compact state. When in the shelf configuration, items or articles placed on the main leave 60 and secondary leave 70 can be accessed. When in the table configuration, items or articles in the secondary leave 70/additional shelf 7 are hidden beneath the table top 110.

[0311] The front 90 and rear 96 table leg assemblies are connected to the third 6c and seventh 6f shelf units 6 respectively such that there is leg/knee room for a person seated at the table top 110 adjacent those shelf units 6c, 6f. The rear wall 62 of each shelf unit 6 is also tapered/arched so as to provide additional room for that person's knees.

[0312] An advantage of the invention according to the second embodiment is that the table leg assemblies 90, 96 are recessed relative to the periphery of the table top 110, to provide legroom for a person seated at the table 105.

[0313] Another advantage of the invention according to the second embodiment is that the secondary shelf 7 can be used to hide items or articles when in the table configuration, but when in the shelf configuration those hidden articles or items can be accessed.

[0314] Another advantage of the present invention is that the table leg assemblies 90, 96 are not located midway between the front and rear ends of the table top 110. This means that the invention can accommodate further shelf units, if desired.

[0315] Yet another advantage of the invention according to the second embodiment is that in the shelf configuration it has a narrow footprint, which allows it to be placed/stored close against a wall.

[0316] The invention according to the second embodiment overcomes one or more other disadvantages referred to in the Background Section of this specification.

[0317] Referring now to FIGS. 20-27, there is shown a convertible bed/mattress base and shelves 100A that is configurable either as a bed/mattress base having a substantially horizontal surface 101A as seen in FIG. 20 or shelves as seen in FIG. 21.

[0318] The convertible bed/mattress base and shelves 100A includes first 1aA, second 1bA, third 1cA, fourth 1dA, fifth 1eA and sixth 1fA shelf units 1A, a linkage system comprising a primary linkage member pair 21A and a secondary linkage member pair 22A pivotally connected to each shelf unit 1A, a first surface support 3A, a second surface support in the form of a table leg assembly 4A connected to the sixth shelf unit 1fA, and an actuator 99A.

[0319] Each shelf unit 1A comprises a substantially horizontally extending leave 10aA-10fA and a leave support including a pair of spaced apart side walls 11aA-11fA extending downwardly from the leave 10aA-10fA and a rear wall 12aA-12fA extending between the leave 10aA-10fA and the side walls 11aA-11fA. The side walls 11aA-11fA extend parallel with the linkage members 21A, 22A and perpendicularly of the leaves 10aA-10fA. The rear walls 12aA-12fA extend vertically between the side walls 11aA-11fA. Each leave support includes a protruding drop-down lip that can hide gaps between the leaves when in the shelf configuration. (It is shown best in FIG. 22, though hard to see.)

[0320] Each leave 10aA-10fA may or may not be lined with a cushion liner or cushion, such as a layer of foam rubber, depending on whether the item of furniture is to serve as a base for a mattress or actual bed already having a thin mattress of sorts.

[0321] Shelf units 1aA, 1bA, 1cA, 1dA, 1eA and 1fA each have a secondary shelf 5aA-5fA located beneath the main leave 10aA-10fA. The secondary shelf 5aA-5fA is dimensioned so as to be substantially hidden beneath the bed base 101A formed by the main leaves 10aA-10fA of the shelf units 1A when in the bed base configuration, and the secondary shelf 5aA-5fA is dimensioned so as to serve as an additional accessible shelf when in the shelf configuration.

[0322] Each secondary shelf 5aA-5fA includes a substantially horizontally extending secondary leave 50aA-50fA that is secured to the side walls 11aA-11fA.

[0323] Each of the primary linkage member pair 21A and each of the secondary linkage member pair 22A is a bar of rectangular cross-section. The bars 21A, 22A are made of metal. These bars 21A, 22A have openings through which pivot pins/fastening pins 24A (only some of which are labelled) extend and fasten within a side wall 11aA-11fA of a shelf unit 1A. In this way, the bars 21A, 22A are pinned for pivotal movement relative to the shelf units 1A.

[0324] The primary 21A and secondary 22A linkage member pairs are able to pivot in unison and parallel with each other between (1) a shelf configuration (see FIGS. 21, 25 and 26) whereby the primary 21A and secondary 22A linkage member pairs extend substantially vertically and the leaves 10A (10aA-10fA), 50A (50aA-50fA) extend in spaced substantially horizontal parallel planes above one another, and (2) a bed base configuration (see FIGS. 20, 23 and 24) whereby the primary 21A and secondary 22A linkage member pairs extend substantially horizontally and the leaves 10A extend next to one another in substantially the one and the same substantially horizontal place to form a substantially flat support surface 101A (mattress/bed base).

[0325] The first surface support 3A and shelf unit 1aA are one and the same. A shelf unit 1aA does not pivot to a raised position.

[0326] The second table leg assembly 4A includes a pair of legs 40A extending vertically from the side walls 11fA of shelf unit 1fA, and a cross piece 41A extending between the legs 40A.

[0327] The actuator 99A is a gas strut and helps a person pivot in a controlled manner the shelf units 1A into the shelf configuration or out of the shelf configuration, as described previously. One end of the actuator 99A is pinned to side wall 11aA. Another end of the actuator 99A is pinned to linkage member 22A. In some embodiments (not shown), the actuator is an electric actuator.

[0328] In use, the convertible bed/mattress base and shelves 100A can be configured as a bed base shown in FIG. 20 or configured as shelves as shown in FIG. 21. In order to change from the base configuration to the shelf configuration, a person raises shelf unit 1fA so that the shelf units 1bA-1fA swing into the shelf configuration shown in FIG. 21. When in the shelf configuration, as seen in FIG. 22, articles or items placed in the secondary leaves 50A can be accessed. When in the base configuration, items in the secondary leave 50A/secondary shelf 5A are largely hidden from view beneath the bed base 101A.

[0329] Referring now to FIG. 28, there is shown a convertible bed/mattress base and shelves 100B that is substantially the same as the one described previously 100A, except that each shelf unit 1A has a pair of sliding or hinged panel doors 13A. This embodiment illustrates that each shelf unit 1A can be in the form of a cabinet or other type of closable compartment.

[0330] Referring now to FIGS. 29-31, there is shown a convertible workbench and shelves 100B mounted within a vehicle, and configurable either as a workbench having a substantially horizontal surface 101B as seen in FIG. 31 or shelves as seen in FIG. 29.

[0331] The convertible workbench and shelves 100B includes first 1aB, second 1bB, third 1cB and fourth 1dB shelf units 1B, a linkage system comprising a primary linkage member pair 21B, and a secondary linkage member pair 22B pivotally connected to each shelf unit 1B, a first surface support 3B, a second support surface in the form of a table leg assembly 4B connected to the fourth shelf unit 1dB, and a gas strut actuator 99B.

[0332] In almost all respects, the convertible bed/mattress base and shelves 100B is substantially the same as the one described previously 100A, except that it has fewer shelf units and each rear wall of the leave support extends at a sloping angle between the main and secondary leaves (ie. the main shelf and secondary shelf). The first surface support 3B and shelf unit 1aB are one and the same.

[0333] In use, the convertible workbench and shelves 100B can be configured as a workbench shown in FIG. 29 or configured as shelves as shown in FIG. 31. In order to change from the workbench configuration to the shelf configuration, a person raises shelf unit 1dB so that the shelf units 1dB-1dB swing into the shelf configuration shown in FIG. 29. When in the shelf configuration, as seen in FIG. 29, articles or items placed in the secondary leaves/shelves can be accessed. When in the workbench configuration, items in the secondary leaves/secondary shelves are hidden from view beneath the workbench 101B.

[0334] Referring now to FIG. 32, there is shown a shelf unit 1C according to another embodiment of the present invention. The shelf unit 1C is similar to shelf unit 1A except that it further includes a hanging rail or rod, or rope, wire or elastic retainer 38C extending between the side walls 51C.

[0335] Referring now to FIG. 33, there is shown a shelf unit 1D according to another embodiment of the present invention. The shelf unit 1D is similar to shelf unit 1A except that it further includes a pair of door panels 13D hinged to the side walls 51D. This embodiment illustrates that each shelf unit 1D (ie. secondary shelf) can be in the form of a cabinet or closable compartment.

[0336] Referring now to FIGS. 34-41, there is shown a convertible desk and shelves 100E that is configurable either as a desk having a substantially horizontal surface 101E as seen in FIG. 34 or shelves as seen in FIG. 35.

[0337] The convertible desk and shelves 100E includes first 1aE, second 1bE, third 1cE and fourth 1dE shelf units 1E, a linkage system comprising a primary linkage member pair 21E and a secondary linkage member pair 22E pivotally connected to each shelf unit 1E, a first surface support 3E, a second surface support in the form of a table leg assembly 4E connected to the sixth shelf unit 1fA, and a pair of actuators 99E.

[0338] Each shelf unit 1E comprises a substantially horizontally extending leave 10aE-10dE and a leave support including a pair of spaced apart side walls 11aE-11dE extending downwardly from the leave 10aE-10dE. The side walls 11aE-11dE extend parallel with the linkage members 21E, 22E and perpendicularly of the leaves 10E.

[0339] The first surface support 3E and shelf unit 1aE are one and the same and include a set of secondary leaves 50E that extend between the side walls 11aE.

[0340] Each of the primary linkage member pair 21E and each of the secondary linkage member pair 22E is a bar of rectangular cross-section. The bars 21E, 22E are made of metal. These bars 21E, 22E have openings through which pivot pins/fastening pins 24E (only some of which are labelled) extend and fasten within a side wall 11E of a shelf unit 1E. In this way, the bars 21E, 22E are pinned for pivotal movement relative to the shelf units 1E.

[0341] The primary 21E and secondary 22E linkage member pairs are able to pivot in unison and parallel with each other between (1) a shelf configuration (see FIG. 35) whereby the primary 21E and secondary 22E linkage member pairs extend substantially vertically and the leaves 10E extend in spaced substantially horizontal parallel planes above one another, and (2) a desk configuration (see FIG. 34) whereby the primary 21E and secondary 22E linkage member pairs extend substantially horizontally and the leaves 10E extend next to one another in substantially the one and the same substantially horizontal plane to form a substantially flat surface 101E (desk top).

[0342] As mentioned, the first surface support 3E and shelf unit 1aE are one and the same. The second table leg assembly 4E includes a pair of legs extending vertically from the side walls 11E of shelf unit 1dE.

[0343] The actuators 99E are gas struts. One end of each actuator 99E is pinned to a side wall 11aE. Another end of each actuator 99E is pinned to linkage member 22E. In some embodiments (not shown), the actuator is an electric actuator.

[0344] In use, the convertible desk and shelves 100E can be configured as a desk shown in FIG. 34 or configured as (additional) shelves as shown in FIG. 35. In order to change from the desk configuration to the shelf configuration, a person raises shelf unit 1dE so that the shelf units 1bE-1dE swing into the shelf configuration shown in FIG. 35. When in the shelf configuration, as seen in FIG. 35, articles or items placed on the secondary leaves 50E can be more easily accessed.

[0345] Referring now to FIG. 42, there is shown a convertible desk and shelves 100F according to another embodiment of the present invention. The convertible desk and shelves 100F is almost identical to convertible desk and shelves 100E except that the first surface support 3E has mounting fixtures/brackets 300 for mounting it to a ground surface or other fixture. In view of this, the second table leg assembly 4E is optional/obsolete.

[0346] Referring now to FIGS. 43-50, there is shown a convertible gaming table (beer pong table) and shelves 100G that is configurable either as a beer pong table having a substantially horizontal surface 101G as seen in FIG. 43 or shelves as seen in FIG. 44. In many respects, furniture item 43 has features that are mostly the same as for other embodiments, and hence only a brief description will follow.

[0347] The convertible table and shelves 100G includes first 1aG, second 1bG, third 1cG, fourth 1dG, fifth 1eG, sixth 1fG and seventh 1gG shelf units 1G, a linkage system comprising a primary linkage member pair 21G and a secondary linkage member pair 22G pivotally connected to each shelf unit 1G, a first surface support in the form of a table leg assembly or stand 3G connected to the third shelf unit 1cA, and a second surface support in the form of a table leg assembly 4G connected to the sixth shelf unit 1fA.

[0348] Each shelf unit 1G comprises a substantially horizontally extending leave 10aG-10gG and a leave support including a pair of spaced apart side walls 11aG-11gG (11G) extending downwardly from the leave 10aG-10gG. The side walls 11aG-11gG extend parallel with the linkage members 21G, 22G and perpendicularly of the leaves 10G.

[0349] Each of the primary linkage member pair 21G and each of the secondary linkage member pair 22G is a bar of rectangular cross-section. The bars 21G, 22G are made of metal. These bars 21G, 22G have openings through which pivot pins/fastening pins 24G (only some of which are labelled) extend and fasten within a side wall 11G of a shelf unit 1G. In this way, the bars 21G, 22G are pinned for pivotal movement relative to the shelf units 1G.

[0350] The primary 21G and secondary 22G linkage member pairs are able to pivot in unison and parallel with each other between (1) a shelf configuration (see FIG. 44) whereby the primary 21G and secondary 22G linkage member pairs extend substantially vertically and the leaves 10G extend in spaced substantially horizontal parallel planes above one another, and (2) a gaming table configuration (see FIG. 43) whereby the primary 21G and secondary 22G linkage member pairs extend substantially horizontally and the leaves 10G extend next to one another in substantially the one and the same substantially horizontal place to form a substantially flat surface 101G (gaming table).

[0351] The first table leg assembly 3G includes splayed legs extending downwardly from the side walls 11G of shelf unit 1cG.

[0352] The second table leg assembly 4G includes a pair of legs extending vertically from the side walls 11G of shelf unit 1gG.

[0353] In use, the convertible gaming table and shelves 100G can be configured as a table shown in FIG. 43 or configured as shelves as shown in FIG. 44. In order to change from the table configuration to the shelf configuration, a person raises shelf unit 1gG so that the shelf units 1G swing into the shelf configuration shown in FIG. 44. Indicia 211 (ie. patterns, markings) appear on various leaves to produce a larger triangular pattern when configured as a beer pong table.

[0354] Referring now to FIGS. 51-58 is shown a convertible table and shelves 100H that is configurable either as a table having a substantially horizontal surface 101H as seen in FIG. 51 or shelves as seen in FIG. 52.

[0355] The convertible table and shelves 100H includes first 1aH, second 1bH, third 1cH, fourth 1dH and fifth 1eH shelf units 1H, a linkage system comprising a primary linkage member pair 21H and a secondary linkage member pair 22H pivotally connected to each shelf unit 1H, and a surface support in the form of a table leg assembly or stand 3H connected to the third shelf unit 1cG.

[0356] Each shelf unit 1H comprises a substantially horizontally extending leave 10aH-10eH and a leave support including a pair of spaced apart side walls 11aH-11eH extending downwardly from the leave 10aH-10eH. The side walls 11aH-11eH extend parallel with the linkage members 21H, 22H and perpendicularly of the leaves 10H.

[0357] Each of the primary linkage member pair 21H and each of the secondary linkage member pair 22H is a bar of rectangular cross-section. The bars 21H, 22H are made of metal. These bars 21H, 22H have openings through which pivot pins/fastening pins 24H (only some of which are labelled) extend and fasten within a side wall 11H of a shelf unit 1H. In this way, the bars 21H, 22H are pinned for pivotal movement relative to the shelf units 1H.

[0358] The primary 21H and secondary 22H linkage member pairs are able to pivot in unison and parallel with each other between (1) a shelf configuration (see FIG. 52) whereby the primary 21H and secondary 22H linkage member pairs extend substantially vertically and the leaves 10H extend in spaced substantially horizontal parallel planes above one another, and (2) a table configuration (see FIG. 51) whereby the primary 21H and secondary 22H linkage member pairs extend substantially horizontally and the leaves 10H extend next to one another in substantially the one and the same substantially horizontal place to form a substantially flat surface 101H (table top).

[0359] The table leg assembly 3H includes a pair of vertically extending legs 30H, a foot 31H extending perpendicularly and forwardly from a lower region of each leg 30H, a cross piece 32H extending between the legs 30H, and a lateral mount 33H extending laterally from an upper region of each leg 30H.

[0360] In use, the table and shelves 100H can be configured as a table shown in FIG. 51 or configured as shelves as shown in FIG. 52. In order to change from the table configuration to the shelf configuration, a person raises shelf unit 1eH so that the shelf units 1H swing into the shelf configuration shown in FIG. 52.

[0361] FIGS. 59 and 60 show part of a convertible item 510 utilising a rigid linkage system (drive system). The item 510 is shown as having three shelf units, each of which has a substantially horizontally extending leave 52a, 52b, 52c and a pair of leave supports 53a, 53b, 53c for supporting each leave 52. Each leave support 53 is in the form of a triangular casting having a shaft-receiving aperture. Each leave support 53 is connected to the leave 52 by way of screws. Although not shown, item 510 can include secondary leaves.

[0362] The convertible item 510 also has a linkage system connected to each leave support 53 such that the leaves 52 are able to pivot in unison and parallel with each other between (1) a shelf configuration whereby the leaves 52 extend in spaced substantially horizontal parallel planes above one another (see FIGS. 60), and (2) a substantially horizontal surface configuration whereby the leaves 52 are positioned next to one another to form a substantially horizontal surface (see FIG. 59).

[0363] The linkage system comprises a mounting frame comprising a pair of frame members 54a, 54b in the form of C-shaped channels, a plurality of shafts 55a, 55b, 55c, each having a working region 56a, 56b, 56c located within the channel and another end secured within the opening of the leave support 53, and a drive in the form of a respective pair of rigid linkage bar members 57a, 57b, 58a, 58b located within each frame member 54. Each rigid linkage bar member 57, 58 is connected to a flanged working end 56 of a shaft 55 by way of a pivot pin/fastening pin 59 (not all of which have been labelled).

[0364] FIG. 61 shows part of a convertible item 510a also utilising a drive in the form of a pair of rigid linkage bar members 58c (only one can be seen). The item 510a is very similar to the one shown previously 510 except that it has a single rigid linkage bar member 58c extending within each C-shaped channel 54c, 54d.

[0365] FIG. 62 shows part of a convertible item 510b utilising a drive in the form of a pair of worm gears 511a, 511b. The item 510b is very similar to the one shown previously 510 except that it has a worm gear 511 extending within each C-shaped channel 54e, 54f. Also, each working end of the shaft has a spur gear 513a which meshes with a worm gear 511. As the worm gear 511 turns in each channel 54, so do the shafts in unison.

[0366] The drive can further include an operable handle, crank or motor. Helical/worm gears may provide an advantage in that they create natural resistance to the shelf units pivoting.

[0367] FIG. 63 shows part of a convertible item 510c utilising a drive in the form of a pair of bevel gears 514a, 514b. The item 510c is very similar to the one shown previously 510 except that it has a bevel gear 514 extending within each C-shaped channel 54g, 54h. Also, each working end of the shaft has a spur gear 516 which meshes with a bevel gear 514. As the bevel gear 514 turns in each channel 54, so do the shafts in unison.

[0368] FIG. 64 shows part of a convertible item 510d utilising a drive in the form of a pair of racks 518. The item 510d is very similar to the one shown previously 510 except that it has a pair of racks 518 extending within each C-shaped channel 54i, 54j. Also, each working end of the shaft has a pinion 519 which meshes with and turns between the racks 518. As the shaft/pinion 519 turns, the racks 518 slide back and forth within the C-shaped channel 54.

[0369] FIG. 65 shows part of a convertible item 510e utilising a drive in the form of motors 520 with encoders. The item 510e is very similar to the one shown previously 510 except that it has motors 520 located within each C-shaped channel 54k, 54l, each of which engages a working end of a shaft. Each of the motors 520 is electrically connected by wires 521 so that all motors 520 turn the shafts in a synchronised manner The encoders monitor and control the degree of rotation of the motors 520.

[0370] FIG. 66 shows part of a convertible item 510e utilising a drive in the form of two chain or belt drives 522. The item 510f is very similar to the one shown previously 510 except that it has chain or belt drives 522 located within each C-shaped channel 54m, 54n. Each working end of the shaft has a sprocket 523 that meshes with the chain or belt drive 522. As the chain or belt 522 moves in each channel, so do the shafts in unison.

[0371] FIG. 67 shows how the item 510 of any of the earlier figures can include a surface support 525 comprising two upstanding legs 525a, 525b. In this embodiment, the frame members 54 are tubular members, enclosing the working ends of the shafts. Those legs 525a, 525b are pinned to two of the shafts 55 such that the frame members 54 can be freely raised and lowered between the shelf configuration and substantially horizontal surface configuration, but in doing so the leaves 52 are rotated so as to remain horizontal at all times. When in the substantially horizontal surface configuration, the leaves are locked together in that they bear against each other.

[0372] FIG. 68 shows how the drive can include a handle/crank 528 connected to a shaft 55 such that the leaves 52 can be rotated using the handle/crank 528. Meanwhile, the frame members 54 can rotate/pivot freely.

[0373] FIG. 69 shows essentially the same set up as FIG. 68, except that the top and bottom leaves 52 can have their inclination adjusted separately by way of a modified shaft 55x, 55y. This is in case they need to be adjusted horizontally, for perfect alignment with the other leaves.

[0374] FIG. 70 shows how the item 510 of any of the earlier figures can include a surface support comprising two upstanding legs 525c, 525d. In this embodiment, the frame members 54 are tubular members, enclosing the working ends of the shafts 55. The legs 525c, 525d are pinned to two of the shafts 55/leave supports 53 between the frame members 54. Alternatively, the frame members 54 could be attached directly to a leave 52.

[0375] FIG. 71 shows another embodiment wherein a convertible item 530 comprises a plurality of shelf units, with each shelf unit comprising a substantially horizontally extending leave 531 and a leave support 532 for supporting the leave 531. The item 530 also comprises a linkage system comprising a tubular frame member 533 extending between pairs of leaves 531. The linkage system comprises a shaft 534 connected to each leave support 532 such that the leaves 531 are able to pivot in unison and parallel with each other between (1) a shelf configuration whereby the leaves extend in spaced substantially horizontal parallel planes above one another, and (2) a substantially horizontal surface configuration whereby the leaves 531 are positioned next to one another to form a substantially horizontal surface.

[0376] The item 530 also comprises a surface support 537 comprising an upstanding leg 537. In this embodiment, the leg 537 has a bracket 538 pinned to leave supports 532 using a shaft 534.

[0377] When a convertible item, such as a table, is long, it becomes very tall when in the shelf configuration. It can be dangerous and difficult to manoeuvre into the horizontal surface configuration especially when the shelves are loaded with heavy articles. Dampeners and actuators, including gas struts, springs or cams can be used to slow down the movement from the shelf configuration to the horizontal surface configuration, or to reduce the force of the shelves moving downwards to the horizontal surface configuration. However, this does not overcome the problem of the item potentially tipping over. Solutions to this problem include adding weight to the at least one support surface/base, or screwing the base/support surface down. A wider base/support surface is another option, but that would increase the footprint of the item, which is not always desirable or practical.

[0378] The problem associated with tipping can be overcome by using a surface support having a leg assembly pivotally connected to the linkage system and/or shelf unit whereby legs of the leg assembly extend apart from each other when pivoting to the substantially horizontal surface configuration, and the legs move closer together when pivoting to the shelf configuration. The leg assembly can be configured similarly to that of a collapsible stroller for an infant.

[0379] The problem associated with tipping can also be overcome by using an anti-tip support leg design. A unique feature is that shelf units can be placed against a wall and pulled down in one direction, and the support surface/base does not need to be affixed in place.

[0380] FIGS. 72 to 76 show a convertible item of furniture 540 that is very similar to furniture items shown in the figures preceding FIG. 59. The item 540 has a linkage system comprising linkage members previously described in those figures.

[0381] For item 540, the surface support includes a leg assembly 541 comprising legs 542 pivotally connected to the linkage system. A dampener pair, in the form of a pair of gas struts 544, extend from an upper region of the legs 542 to the linkage system. The legs 542 have ground-contacting wheels. The legs 542 fold against the shelf units when in the shelf configuration, as seen in FIG. 72. The legs 542 can extend away from the shelf units when the item 540 is moved towards the substantially horizontal surface configuration and slow the downward movement by way of the dampener pair 544, as seen in FIGS. 73-76.

[0382] The embodiment of FIG. 76 is a garage table featuring a large offset between the linkage members and table leaves. It also has a large gap between adjacent table leaves. This reduces any pinch points and also serves as a place to put clamps to hold down workpieces.

[0383] FIGS. 77 and 78 shows another embodiment wherein a convertible item 550 comprises a plurality of shelf units, with each shelf unit comprising a substantially horizontally extending leave 551 and a leave support 552 for supporting the leave 551. The item 550 also comprises a linkage system comprising a C-shaped frame member 554 extending adjacent the leaves 551. In other respects, the linkage system is like that shown in FIG. 59. The linkage system comprises a shaft 555 connected to each leave support 552 such that the leaves 551 are able to pivot in unison and parallel with each other between (1) a shelf configuration (FIG. 78) whereby the leaves 551 extend in spaced substantially horizontal parallel planes above one another, and (2) a substantially horizontal surface configuration (FIG. 77) whereby the leaves 551 are positioned next to one another to form a substantially horizontal surface.

[0384] The item 550 also comprises a surface support comprising a pair of legs 557, 558. Each leg 557, 558 is of a C-shaped cross section. Frame member 554 extends within the leg 557 when in the shelf configuration, as seen in FIG. 78. An upper region of leg 557 is pivotally connected to the leave support 552 by way of a shaft 555. Frame member 554 extends within the leg 558 when in the shelf configuration, as seen in FIG. 78. An upper region of leg 558 is pivotally connected to the leave support 552 by way of a shaft 555.

[0385] The surface support further comprises an anti-tip leg 559 that uses a rotary dampener. A top of the leg 559 is attached to the frame member 554 by way of a rotary dampener (not visible) that resists pivoting. When in the shelf configuration, as seen in FIG. 78, the anti-tip leg 559 extends adjacent leg 557. When in the substantially horizontal surface configuration, as seen in FIG. 77, legs 557 and 558 pivot downwardly from within the frame member 554, and the anti-tip leg 559 extends towards leg 558.

[0386] FIGS. 79 and 80 shows another embodiment wherein a convertible item 560 is very similar to item 550, except that it does not have the anti-tip leg 559.

[0387] FIGS. 81 and 82 shows another embodiment wherein a convertible item 570 is very similar to item 560, except that it has both primary 571 and secondary leaves 572, as well as secondary leave supports 573 extending between the primary 571 and secondary leaves 572. The secondary leaves 572 extend either side of a frame member 575 of the linkage system. The leaves 571, 572 are able to pivot in unison and parallel with each other between (1) a shelf configuration (FIG. 81) whereby the leaves 571, 572 extend in spaced substantially horizontal parallel planes above one another, and (2) a substantially horizontal surface configuration (FIG. 82) whereby the leaves 571 are positioned next to one another to form a substantially horizontal surface.

[0388] Convertible items 550, 560 and 570 have leaves that are held at a greater distance from the rotating shafts. This gives clearance between the pivot point and the shaft, thereby reducing pinch points. Also, this means that the leave supports can be located midway beneath/centrally of the leaves, thereby further reducing pinch points. Also, only a single frame member is required, extending centrally of the leaves.

[0389] Referring now to FIGS. 83 to 88, these show that the angle at which a leave 52 extends can be adjusted independently of the other leaves. That is, the shaft 55 that is connected to the leave support can be further pivoted/rotated as required without engaging the drive. The drive 58c in this case is the same as that illustrated in FIG. 61.

[0390] FIGS. 83 and 84 show a locking gear mechanism which can lock or release a single leave's rotation from the drive. The table leave 52 is fastened to a gear or cogwheel 581 that can freely rotate independent of the drive. Gear 581 is meshed with gear 588. A pivoting latch 582 is sprung biased to lockingly engage the drive to gear 588 so that the drive and leave rotate together. Another independent gear 580 features a cam and missing teeth 589 so that it can initially rotate without engaging other gears. It also features an attachment point for a crank or handle. When rotated anticlockwise the cam opens the pivoting latch 582 while simultaneously meshing with gear 588. When the gear 580 is meshed with gear 588, the crank handle can then control the rotation of the leave, enabling the user to turn the leave without placing their hand near any potential pinch points. This is useful when the leave forms a tray or container that needs to be rotated and emptied.

[0391] FIGS. 85 and 86 show that a spring-loaded pivot 585 can be used. The springs are bias to hold the leaves 52 parallel to each other and strong enough that they would not be affected by normal rotation of the drive, but weak enough that a single leave could be forcefully rotated independently of the drive to empty its contents if need be.

[0392] FIGS. 87 and 88 show that a thread lock 586 can be used for fine adjustment of the leave angle.

[0393] FIGS. 89 to 91 show a convertible item 590 having a linkage system (drive system) similar to that shown in FIG. 68. The drive includes a handle/crank 592 connected to a shaft of the drive system such that the leaves 52 are able to pivot in unison and parallel with each other between (1) a shelf configuration whereby the leaves 52 extend in spaced substantially horizontal parallel planes above one another (see FIG. 89), and (2) a substantially horizontal surface configuration whereby the leaves 52 are positioned next to one another to form a substantially horizontal surface (see FIG. 91).

[0394] The frame members 54 are tubular members, enclosing the working ends of the shafts. An anti-tip leg assembly 591 is pinned to two of the shafts of the drive system such that the frame members 54 can be raised and lowered between the shelf configuration and substantially horizontal surface configuration.

[0395] The item 590 is always balanced when moving between the different configurations. Legs 593a, 593b of the leg assembly 591 extend apart from each other when pivoting to the substantially horizontal surface configuration, and the legs 593a, 593b move closer together when pivoting to the shelf configuration. The leg assembly 591 utilises a hinge system 594 and gas struts 595 for achieving this.

[0396] The item 590 is for usage in storage garages, self storage and the like. It could be a replacement for commercial pallet racking in some situations, since there would be no forklift, ladders or lifting equipment needed to store boxes and pallets up to the ceiling, but then access them by hand when necessary. Use of gas struts 595 and handle/crank 592 would mean that the weight isn't a problem either.

[0397] FIGS. 92-95 show part of a convertible item (shelf/table) 610 that is mountable to a wall by way of mounting brackets 608. The item 610 utilises a drive in the form of timing belt or chain drives 622. The item 610 is very similar to item 510f of FIG. 66, except that it has three timing belt or chain drives 622 located within each C-shaped frame member channel 604. Each working end of a shaft 605 has a sprocket or timing pulley 623 that meshes with a timing belt or chain drive 622. As the timing belt or chain 622 moves in each channel 604, so do the shafts 605 in unison.

[0398] The drive further comprises two pairs of actuators 640, 650. A first pair 640, each being a gas spring strut 640, extends between the frame member channel 604 and sprocket 623a and applies torque to the sprocket 623a, thereby creating a lift assist. Thus, less force is needed to transition the item 610 from a table (FIG. 95) to a set of shelves (FIG. 93). The gas spring strut 640 it is positioned in such a way that when the item 610 is transitioned into a table, the gas spring passes over centre and creates a small amount of torque in the opposite direction, thereby pushing the item 610 into a table configuration. The table has a mechanical stop (not labelled) that prevents it from rotating further than horizontal.

[0399] A second actuator pair 650, each being a gas damper 650, extends between the frame member channel 604 and sprocket 623b and applies torque to the sprocket 623b. Its function is to restrict the rotational speed of the sprocket 623b in either one direction or both directions. This results in the item 610 always transitioning slowly from a shelf to a table independently of how much weight is placed on the shelves/leaves 52, making it safer for the user and also avoiding a hard stop at the end of the rotation. In the case that it is restricted in one direction, the table may be transitioned to a shelf more rapidly.

[0400] The two actuator pairs 640, 650 could be replaced by one actuator pair that has both a dampening function and a spring function. Similarly, a rotary actuator, or a rotary spring could be used.

[0401] It is to be understood that there are other alternative suitable connection points for actuators, dampeners, cams, linkages or springs to affect the same function of assisting with the lifting and lowering of the item. For example, a strut, dampener, cam, linkage or spring can be mounted external to the frame member 604 and can be suitably connected to the wall mounting region 608 or any other part of the item that remains stationary during the transition from a substantially horizontal orientation to a vertical orientation and vice versa. Alternatively, a dampener, strut, cam, linkage or spring can be suitably connected from a leave support 641 to the frame member 604 such that during the transition from one configuration to the other the load is supported or assisted and the speed is governed or restricted providing a safer operation.

[0402] In the present specification and claims, the word ‘comprising’ and its derivatives including ‘comprises’ and ‘comprise’ include each of the stated integers but does not exclude the inclusion of one or more further integers.

[0403] Reference throughout this specification to ‘one embodiment’ or ‘an embodiment’ means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present invention. Thus, the appearance of the phrases ‘in one embodiment’ or ‘in an embodiment’ in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more combinations.

[0404] In compliance with the statute, the invention has been described in language more or less specific to structural or methodical features. It is to be understood that the invention is not limited to specific features shown or described since the means herein described comprises preferred forms of putting the invention into effect. The invention is, therefore, claimed in any of its forms or modifications within the proper scope of the appended claims appropriately interpreted by those skilled in the art.