Abstract
An axle-free wheel comprising: an outer rim member having a ground interface on an external surface thereof and an outer ball race or rolling race on an inner surface thereof; an inner rim member having an inner ball or rolling race on an outer surface thereof.
Claims
1. An axle-free wheel comprising: a. an outer rim member having a ground interface on an external surface thereof and an outer ball race or rolling race on an inner surface thereof; b. an inner rim member having an inner ball or rolling race on an outer surface thereof; c. rolling means distributed between said inner and outer ball races by a separator wherein said axle-free wheel further comprises attachment means configured for attaching said axle-free wheel to an object to be transported.
2. The wheel according to claim 1, wherein said rolling means is a plurality of balls or rollers.
3. The wheel according to claim 1, wherein said attachment means is selected from the group consisting of mechanical bayonet means, magnetic means, reversibly gluing means, screws or any combination thereof.
4. The wheel according to claim 1, wherein said outer and inner rim members are made of an elastically stretchable material such that said outer and inner rim members being stretched to provide the axle-free wheel with dismountability thereof for maintenance.
5. The wheel according to claim 1 comprising at least one side external cover attachable to said wheel.
6. The wheel according to claim 1, wherein said side bayonet means comprises stopper means.
7. The wheel according to claim 6, wherein said stopper means is selected from the group consisting of a stopper screw, a first magnetic fixture, a click, a snap and any combination thereof.
8. The wheel according to claim 5 comprising a gasket seal disposed between said outer rim member and said external cover.
9. The wheel according to claim 1, wherein said ground interface is a tire.
10. The wheel according to claim 9, wherein said tire has at least one sealing side rim.
11. The wheel according to claim 5, wherein said external cover is fixatable by means of a coupling pawl.
12. The wheel according to claim 5, wherein said external cover is fixatable by means of a second magnetic fixture.
13. The wheel according to claim 1, wherein at least one of said outer and inner ball races have a circumferential groove.
14. A wheeled luggage case comprising: a. a storage chamber; b. a cover defining an opening on at least one side of said storage chamber for providing ready access therein; and c. at least two axle-free wheels of claim 1 operatively connected to said chamber for towing said case along a ground surface in a tilted position.
15. The case according to claim 14 comprising a telescopic handle having an open reinforcing profile configured for receiving attaching screws mechanically interconnecting said telescopic handle and a wall of said storage chamber.
16. The case according to claim 15, wherein said telescopic handle is clampable in at least two positions.
17. The case according to claim 15, wherein said telescopic handle is configured for supporting an additional case being placed thereon.
18. The case according to claim 14 comprising at least one supporting shoe in a plane of an external surface of said axle-free wheel such that said case is placeable on a side face thereof.
19. The case according to claim 14 comprising a compartment having a sealable cover.
20. The case according to claim 14 comprising a battery connectable to an electricity source for charging thereof and to user's mobile device for energizing of charging thereof.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0063] These and other aspects of the present invention will now be described in more detail, with reference to the appended drawings showing at least one example embodiment of the invention, wherein:
[0064] In order to understand the invention and to see how it may be implemented in practice, a plurality of embodiments is adapted to now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which
[0065] FIG. 1A is an exploded isometric view of an axle-free wheel;
[0066] FIG. 1B is an isomeric view of an assembled axle-free wheel;
[0067] FIG. 1C is a an isomeric view of an axle-free wheel with a cover;
[0068] FIG. 2A is an isometric view of a case;
[0069] FIG. 2B is an enlarged exploded isometric view of a wheel portion of a case;
[0070] FIG. 2C is an enlarged view of a bayonet fixture;
[0071] FIG. 2D is a schematic cross-sectional view of a Hall sensor for mileage measuring;
[0072] FIG. 3A is a schematic partial cross-sectional view of a sealed axle-free wheel;
[0073] FIG. 3B is an enlarged cross-sectional view of sealing arrangement;
[0074] FIGS. 4A and 4B are enlarged cross-sectional view of a tire provided with sealing rims;
[0075] FIG. 5A is an exploded side view of an axle-free wheel and a cover provided with a coupling pawl;
[0076] FIG. 5B is a schematic cross-sectional view of an axle-free wheel and a cover provided with a coupling pawl in an assembled position;
[0077] FIG. 5C is enlarged cross-sectional view of coupling pawl arrangement;
[0078] FIG. 5D is a schematic cross-sectional view of an axle-free wheel and a cover provided with a second magnetic fixture in an assembled position;
[0079] FIGS. 6A and 6B are enlarged partial cross-sectional views of balls between ball races provided with circumferential grooves;
[0080] FIG. 7 is a side view of a case lying sidelong;
[0081] FIG. 8A is an exploded isometric view of a telescopic handle arrangement;
[0082] FIG. 8B is an exploded isometric view of a handle fixing arrangement;
[0083] FIG. 8C is an enlarged partial cross-sectional view of telescopic handle arrangement attached to a store chamber;
[0084] FIGS. 9A and 9B are side schematic views of a case with a handle clamped in different positions;
[0085] FIG. 9C is a side schematic view of a case with an additional load supported by a telescopic handle;
[0086] FIGS. 10A to 10D are isometric views of an upper sealable compartment of a case;
[0087] FIGS. 11A to 11D are isometric views of a pocket embodiments of a case;
[0088] FIG. 12 is an isometric view of a compartmentalized case;
[0089] FIGS. 13A and 13B are isometric views of an open case in two different positions;
[0090] FIGS. 14A and 14B are isometric views of a hinged supporting bracket;
[0091] FIGS. 15A and 15B are isometric views of a sliding supporting bracket;
[0092] FIG. 16 is an isometric view of a case provided with additional loads;
[0093] FIG. 17 is an isometric view of cases towed in a group manner;
[0094] FIG. 18A is a side schematic view of a case vertically standing on supporting members;
[0095] FIGS. 18B to 18D are isometric views of exemplar arrangements of supporting members;
[0096] FIGS. 19A and 19B are isometric views of a wheeled case provided with a serpentine zipper;
[0097] FIG. 19C is an isometric view of an opened wheeled case provided with a serpentine zipper;
[0098] FIG. 19D is an enlarged view of a zipper slider;
[0099] FIG. 20A is an isometric view of a wheeled case provided with a double zipper arrangement; and
[0100] FIGS. 20B and 20C are isometric views of a double zipper arrangement.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
[0101] The following description is provided, so as to enable any person skilled in the art to make use of said invention and sets forth the best modes contemplated by the inventor of carrying out this invention. Various modifications, however, are adapted to remain apparent to those skilled in the art, since the generic principles of the present invention have been defined specifically to provide an axle-free wheel and a luggage case provided with the aforesaid axle-free wheels.
[0102] The term “axle-free wheel” refers hereinafter to a wheel mechanically attachable to a planar plane, whereat a wheel plane is parallel to the plane of attachment.
[0103] The term “ground interface” refers hereinafter to a member circumferentially distributed over the external rim member and which is able to be in contact with the ground.
[0104] Reference is now made to FIG. 1A showing an exploded isometric view of an axle-free wheel. Specifically, the wheel comprises outer rim member 120 having ground interface 180 on its external surface and outer ball race 170 on its inner surface; inner rim member 130 having inner ball race 190 on its outer surface; and a plurality of balls 160 uniformly distributed between said inner and outer ball races 170 and 190, respectively, by separator 110, which have open ball holder portions 140 and crossbar portions 150.
[0105] Inner rim member 130 is provided with bayonet members 200 configured for connecting to its counterpart attached to a case (as described below).
[0106] FIG. 1B shows an axle-free wheel in a partially assembled position without cover 210 while FIG. 1C presents assembled axle-free wheel covered by cover 210.
[0107] Reference is now made to FIG. 2A showing a layout of wheeled case 300 of the present invention.
[0108] According to one embodiment of the present invention, outer and inner rim 120 and 130 members, respectively, are made of an elastically stretchable material. Outer and inner rim members 120 and 130 can be stretched for easily taking the axle-free wheel to pieces, cleaning its elements and reassembling.
[0109] Reference is now made to FIG. 2A showing a layout of wheeled case 300 of the present invention. Wheeled case 300 comprises chamber 310 and chamber cover 305. Axle-free wheels 100 are attached to side surfaces of chamber 310.
[0110] Reference is now made to FIG. 2B showing an exploded view of attachment arrangement of axle-free wheel 100 having bayonet tabs 200, bayonet base 230 and bearing plate 220 attached to the side surface of chamber 310.
[0111] Reference is now made to FIG. 2C showing an enlarged partial view of bayonet base 230 having grips 231 and supporting surface 236. When axle-free wheel 100 is mounted, bayonet tabs 200 are inserted under grips 231. Bayonet tabs 200 can be arrested by stopper screws (not shown) threaded into bores 233 and 235.
[0112] Reference is now made to FIG. 2D showing a schematic partial cross-sectional view of axle-free wheel 100 attached to chamber 310 and arrested by a magnetic stopper fixture comprising two counterpart articles 390a and 390b. Attaching axle-free wheel 100 by magnetic attaching means is also in the scope of the present invention.
[0113] Reference is now made to FIGS. 3A and 3B showing cross-sectional views of axle-free wheel 100 provided with gasket seal 215 preventing dust penetration of dust via a potential gap between outer rim member 120 and cover 210.
[0114] Reference is now made to FIGS. 4A and 4B showing partial cross-sectional views of axle-free wheel 100 where tire 180 is provided with sealing side rim 185 which can be fixated by cover 210 of an internal article 187. Numeral 183 refers to a plane 183 defined by a side outer tire rim 184 which contacts to the ground when axle-free wheel 100 is placed onto the ground.
[0115] Reference is now made to FIGS. 5A to 5C showing cross-sectional views of axle-free wheel 100 which illustrate pawl coupling mechanism used for attaching cover 210 to inner rim member 130. Cover 210 has pawl 215 coupling with a step 122 and fixating cover 210 on inner rim member 120.
[0116] Reference is now made to FIG. 5D showing a second magnetic fixture alternatively functioning as means attaching cover 210 to inner rim member 120. Two magnetic counterpart articles are indicated as 217a and 217b.
[0117] Reference is now made to FIGS. 6A and 6B showing exemplar circumferential grooves within outer and inner ball races 170 and 190, respectively. Circumferential grooves of different form factor 125 and 127 belong to outer ball race 170 and grooves 135 and 137 to inner ball race 190, respectively.
[0118] Reference is now made to FIG. 7 showing a partial view of the wheeled case lying sidelong on horizontal surface (ground) 321. According to this specific embodiment of the present invention, supporting members 320 are disposed on a side surface of said chamber 310 for supporting the case lying sidelong. The case rests on outer tire rim 184 of axle-free wheel and supporting members 320 thereat outer tire rim 184 and supporting members 230 belong to one plane and reliably support the case.
[0119] Reference is now made to FIG. 8A showing an exploded isometric view of handle telescopic arrangement 400. The aforesaid arrangement comprises handle 410, telescopic profile 420 and terminal member 430. Numeral 440 and 440a refer to attaching means for attaching handle telescopic arrangement 400 in free and mounted positions, respectively. Telescopic profile 420 is provided with axial slots configured for receiving sliding member 443 (shown below).
[0120] Reference is now made to FIG. 8B showing an exploded isometric view of attaching means comprising screw 441, washer 442, sliding member 443 and nut 444.
[0121] Reference is now made to FIG. 8C showing a partial cross-sectional view of handle telescopic arrangement 400 attached to plate 445. As said above, sliding member 443 is inserted into profile 446 and screwed up by screw-nut pair 441/444.
[0122] Reference is now made to FIGS. 9A and 9B showing wheeled case with handle telescopic arrangement 400 clamped in different positions. Clamping mechanism controlling handle position is not shown. Maximum deployment of handle telescopic arrangement 400 corresponds to minimum towing force to be applied to the case 300 by a user (not shown).
[0123] Reference is now made to FIG. 9C, showing an optional placing additional load 330 onto chamber 310. When case 300 is angularly towed, additional load is supported by telescopic arrangement 400.
[0124] Reference is now made to FIGS. 10A and 10B showing alternative embodiments concerning upper compartment 350 having cover 360 provided with sealer 365. The following options can be located in compartment 350: slot 371 for connecting a cable (electric grid, USB or other options) and office stationery 367.
[0125] Reference is now made to FIGS. 10C and 10D showing frame 361 which can be deployed from compartment 350. Frame 361 can be used for supporting any mobile device 326.
[0126] Reference is now made to FIGS. 11A to 11D, showing alternative embodiment concerning inner partition 380 or an outer recess 327 located on a back surface of the chamber 310. Numerals 328 and 329 refer to optional umbrella and chargeable battery power supply means, respectively. Cable 372 is used for connecting to, for example, USB port.
[0127] Reference is now made to FIG. 12 showing a compartmentalized wheeled case. According to the specific embodiment of the present invention, chamber 310 is divided by partition members 450 interconnected by straps 455. Outmost members 450 are connected to chamber 310 and cover 305. When the case is opened, members 450 are spaced apart from each other.
[0128] Reference is now made to FIGS. 13A and 13B showing wheeled case 300 in partial and full open positions (180°).
[0129] Reference is now made to FIGS. 14A and 14B showing collapsible bracket 460 for supporting said additional load (not shown) in deployed and collapsed position, respectively. Collapsible bracket is hingedly connected to chamber 310.
[0130] Reference is now made to FIGS. 15A and 15B showing collapsible bracket 461 for supporting said additional load (not shown) in deployed and collapsed position, respectively. Collapsible bracket is connected to chamber 310 in a sliding manner.
[0131] Reference is now made to FIG. 16 showing optional placing additional loads 330 onto chamber 310 and on bracket 460. When case 300 is angularly towed, additional loads 330 are supported by telescopic arrangement 400 and bracket 460.
[0132] Reference is now made to FIG. 17 showing group towing a plurality of wheeled cases 300 linked in sequence by straps 470 connected to fastening means 475. Each succeeding wheeled case 300 is supported by preceding case 300.
[0133] Reference is now made to FIGS. 18A to 18D showing a specific embodiment of the present invention provided with at least four supporting members 480 for stabilizing said case in a vertical position. In FIGS. 18B and 18C, rotatable rollers 484/484a are pairwise connected to plate 482/482a which are attached to a case bottom. Rotation axes of rollers 484/484a are oriented perpendicular to rotation axes said axle-free wheels and enable side displacement of wheeled case 300 without its inclination. Resistance to overturning is increased by means of tapered conical shape with wider conical faces directed outwards the case. Rollers 484a are held by clamp 483. Non-rotating embodiment 480b is shown in FIG. 18D. Supporting member 484b is integrated with plate 482b.
[0134] Reference is now made to FIGS. 19A and 19B showing wheeled case 300 of the present invention provided with serpentine zipper 303. Scoop-shaped cover 305 has a curly edge configuration provided with zipper 303
[0135] Reference is now made to a Roller-coaster zipper. This zipper stretches along the top, sides, front/back and bottom of the case in order to provide improved stress distribution over a relatively long zipper path which also changes stress direction.
[0136] Reference is now made to FIG. 19C showing wheeled case 300 in an open position. Numeral 304 refers to jaw members connected to edges of chamber 310 and cover 305. The shown configuration of zipper 303 facilitates total and easy opening and closing wheeled case 300. FIG. 19D provides an enlarged view of slider 306 in its uttermost position.
[0137] Reference is now made to FIGS. 20A to 20C showing wheeled case 300 provided with a double zipper arrangement. In FIG. 20A, sliders 306a and 306b belong to different zippers. The concept is illustrated by FIGS. 20B and 20C, where sliders 306a and 306b can used in different situation. Specifically, two zippers are sewn one above the other and connect external and internal layers 307a and 307b, respectively. Internal layer 307b forms a bigger enclosure, while external layer 307a a forms a smaller enclosure. When wheeled case 300 is maximally loaded, internal zipper 306b is used. In other circumstances, outer zipper 306a is used. Successive closing internal and outer zippers 306b and 306a, respectively, provides an additional effect of compressing the case image. Zippers 306a and 306b when used concurrently have also an anti-theft effect.
[0138] In the claims, the word “comprises” does not exclude other elements or steps, and the indefinite article “a” or “an” does not exclude a plurality. A single computer or other unit may fulfil the functions of several items recited in the claims. The mere fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measured cannot be used to advantage.
[0139] The invention has mainly been described above with reference to a few embodiments. However, as is readily appreciated by the skilled addressee, other embodiments than the ones disclosed above are equally possible within the scope of the invention, as defined by the appended patent claims. For example, the roulette wheel may just as well be an automatic or electronic roulette wheel, where a dealer is not controlling the game. In such an example, the roulette ball may circulate in the roulette bowl by means of compressed air ejecting the ball into the bowl. Furthermore, the computer generated gaming information for each slot may just as well be provided by a projector arranged to project the computer generated gaming information adjacent the slots.
