Abstract
A dishwasher comprises a basket (10) for accommodating articles to be cleaned, said basket comprising a basket floor and a plurality of holding spikes (30) projecting upwardly from the basket floor, and a rotatable spray arm (12) located below the basket, the spray arm comprising a plurality of spray nozzles (20) oriented to direct water jets towards the basket. In accordance with the present invention the basket (10) comprises at least one fixed holding spike (30) or a fixture (90) for a removable holding spike (92) the placement of which coincides with the path of movement of one of the spray nozzles (20), said fixed holding spike or fixture for a removable holding spike comprising means (36) to optically differentiate the holding spike from the remaining holding spikes.
Claims
1. A dishwasher comprising: a basket for accommodating articles to be cleaned, said basket comprising a basket floor comprising a plurality of base bars and a plurality of holding spikes projecting upwardly from the basket floor; and a rotatable spray arm located below the basket, the spray arm comprising a plurality of spray nozzles oriented to direct water jets towards the basket, wherein (a) said plurality of holding spikes comprises at least one first holding spike, said at least one first holding spike being a removable holding spike secured within the basket by at least one latching element secured to at least one base bar of the plurality of base bars, (b) a placement of said at least one first holding spike is substantially above a path of movement of at least one of the spray nozzles, and (c) at least one site for installation of said at least one first holding spike comprises means to optically differentiate said at least one site for installation of said at least one first holding spike from sites of one or more remaining holding spikes of the plurality of holding spikes, wherein the means to optically differentiate said at least one site for installation of said at least one first holding spike comprises a color on at least a part of a surface of said at least one base bar configured to differentiate the placement of said at least one first holding spike from a placement of at least one of the one or more remaining holding spikes.
2. The dishwasher of claim 1, wherein said at least one first holding spike is provided with a sleeve which covers at least part of said at least one first holding spike.
3. The dishwasher of claim 2, wherein the sleeve is designed to be axially extendable from said at least one first holding spike.
4. The dishwasher of claim 3, wherein said sleeve comprises a stop for limiting extension of the sleeve.
5. The dishwasher of claim 3, wherein said at least one first holding spike comprises a latching member for fixing the sleeve in either an extended state or in the non-extended state.
6. The dishwasher of claim 5, wherein said latching member comprises a thickening and the sleeve is provided at its inner side with at least one recess for reception of the thickening.
7. The dishwasher of claim 3, wherein said sleeve comprises an inner tubular member and an outer tubular member, wherein one of said inner and outer tubular members is telescopically extendable and wherein the other of said inner and outer tubular members is fixed with respect to the basket.
8. The dishwasher of claim 7, wherein one of said inner and outer tubular members comprises a thickening and the other of said inner and outer tubular members is provided at its inner side with at least one recess for reception of the thickening.
9. The dishwasher of claim 2, wherein the sleeve is removable from the at least one first holding spike.
10. The dishwasher of claim 2, wherein the sleeve is made of soft plastic or rubber.
11. The dishwasher of claim 2, wherein the sleeve comprises at least one holding projection which laterally extends from the sleeve.
12. The dishwasher of claim 1, wherein said at least one first holding spike is hinged to the basket floor so as to be tiltable between a substantially vertical use position and a substantially horizontal non-use position.
13. The dishwasher of claim 1, wherein at least part of a surface of said at least one first holding spike differs from the one or more remaining holding spikes by at least one surface characteristic.
14. The dishwasher of claim 1, wherein at least part of said at least one first holding spike has a different surface texture than the one or more remaining holding spikes.
15. The dishwasher of claim 1, wherein the at least one of the spray nozzles the path of movement of which coincides with the first holding spike, is designed to direct a water jet substantially vertically towards said at least one first holding spike.
16. The dishwasher of claim 1, wherein said at least one first holding spike is adapted to stably support a vessel to be cleaned in an upside-down orientation so that the opening of the vessel is arranged substantially above the path of movement of said at least one of the spray nozzles.
17. The dishwasher of claim 1, wherein a shape and/or a length of said at least one first holding spike differs from that of at least one of the one or more remaining holding spikes.
18. The dishwasher of claim 1, wherein a shape and/or a length of said at least one first holding spike is substantially the same as at least one of the one or more remaining holding spikes.
Description
(1) Preferred embodiments of the present invention are described in further detail below by reference to the drawings in which:
(2) FIG. 1 is a perspective view of a dishwasher basket and a rotatable spray arm;
(3) FIG. 2 illustrates a holding spike comprising an extendable sleeve;
(4) FIG. 3 shows the sleeve of FIG. 2 in its extended state;
(5) FIG. 4 shows a further embodiment of an extendable sleeve;
(6) FIG. 5 illustrates a sleeve comprising an inner and an outer tubular member;
(7) FIG. 6 illustrates a further embodiment of a sleeve comprising an inner and an outer tubular member;
(8) FIG. 7 is a side view of the sleeve shown in FIG. 6;
(9) FIG. 8 illustrates a holding spike comprising a fixed sleeve;
(10) FIGS. 9 to 11 depict embodiments of sleeves comprising holding projections;
(11) FIG. 12 illustrates a section of a dishwasher basket comprising a marking for reception of removable holding spike; and
(12) FIG. 13 shows the dishwasher basket of FIG. 12 with a removable holding spike being mounted at the marked site.
(13) In FIG. 1 there is shown a dishwasher basket 10 and a rotatable spray arm 12 that is provided below the basket. The basket 10 is a wire mesh basket comprising a plurality of holding spikes which in the embodiment shown in FIG. 1 are provided in three racks 14, 16 and 18 which each comprise a plurality of equidistantly arranged pairs of holding spikes. While in the embodiment shown in FIG. 1 racks 14, 16 and 18 are fixed with respect to the floor of basket 10 each of racks 14, 16 and 18 also may be designed to be tiltable between an upright use position (as shown in FIG. 1) and a folded down position of non-use in which the spikes extend substantially in parallel to the floor of basket 10.
(14) The rotatable spray arm 12 comprises a plurality of spray nozzles 20 which are adapted to spray water upwardly towards basket 10. During rotation of the spray arm which can be effected by providing spray arm 12 with at least one driving nozzle that ejects a water jet at an angle with respect to the vertical direction so as to impart a rotational movement to spray arm 12, each of the spray nozzles 20 moves along a circular path of movement, two of which are shown in FIG. 1 at reference signs 22 and 28. The particular holding spike of rack 16 which during rotation of the spray arm temporarily is located directly above the spray nozzle which moves along circular path 22 is provided with a sleeve 24, so as to indicate to the user that such holding spike is suited for the cleaning of taller vessels, such as tall glasses, bottles, vases and the like. Similarly, one of the holding spikes of rack 14 which is located directly above circular path 28 of a further spray nozzle is provided with a sleeve 26 which in the embodiment shown in FIG. 1 is an extendable sleeve as will be explained in further detail below by reference to FIG. 5.
(15) Sleeves 24 and 26 thus provide for a simple but very efficient means for indicating to the user those holding spikes that are suited for the cleaning of tall hollow vessels, wherein sleeves 24 and 26 do not impart the use of the respective holding spikes for holding other articles such as plates and the like. In the simplest embodiment, the marking of the respective holding spikes can be implemented by providing the respective holding spikes with a different colour so as to differentiate such holding spike from other holding spikes which are located in between or outside of any of the circular movement paths of the spraying nozzles of spray arm 12.
(16) FIG. 2 shows a holding spike 30 which comprises a thickened end 32. Holding spike 30 extends upwardly from a base bar 34 which itself either can be fixedly arranged in the floor of the basket 10 or which can be rotatable about the axis of base bar 34. Holding spike 30 is provided with a sleeve 36 so as to differentiate spike 30 from other holding spikes. Sleeve 36 which is made of a substantially rigid or self supporting material, such a plastics material such as polypropylene, is designed to be slightly deformable, so that the interior of sleeve 36 can be widened so as to accommodate the thickened end 32 of holding spike 30 when sleeve 36 shall be moved into an extended position as it is shown in FIG. 3. To this end the sleeve 36 either can be made of a material that is substantially dimensionally stable but allows for a certain amount of deformation, or can be provided with a design that allows a slight deformation along its circumference, such as by providing sleeve 36 with longitudinal slits.
(17) As shown in FIGS. 2 and 3 sleeve 36 comprises in its lower section an upper guiding member 38 and a lower guiding member 40. Upper and lower guiding members 38 and 40 can be designed as a rim which extends inwardly towards the holding spike 30 or as a plurality of at least three projections that are distributed about the inner circumference of sleeve 36. In the extended position shown in FIG. 3, sleeve 36 has been extended until the upper guide member 38 abuts against the thickened end 32 of holding spike 30. In the extended position sleeve 36 can be employed to stabilize taller articles to be cleaned during a washing cycle.
(18) In FIG. 4 there is shown a sleeve 42 which at its inner side comprises a plurality of recesses 44 by means of which sleeve 42 can be latched onto the thickened end 32 of holding spike 30 so as to secure sleeve 44 in a non-extended position similar to that of sleeve 36 shown in FIG. 2 or in a fully or partially extended position such as the half way extended position shown in FIG. 4.
(19) In FIG. 5 there is illustrated a sleeve which comprises an inner tubular member 46 that is arranged within an outer tubular member 48. Inner and outer tubular members 46 and 48 are arranged for relative telescopic movement, wherein the inner tubular member 46 comprises one or more projections 50 which engage one of a plurality of recesses 52 provided in the outer tubular member 48 so as to fix the relative position of the inner tubular member 46 with respect to the outer tubular member 48. Outer tubular member 48 at its lower end rests on base bar 34 to which the holding spike 30 is connected, wherein the outer tubular member 48 is provided with a latching projection 54 which extends below base bar 34 so as to fixedly engage the outer tubular member 48 to base bar 34. At its upper end the inner tubular member 46 is provided with a soft tip which can be made for example of rubber and which serves as a rest for articles to be cleaned, such as tall hollow vessels, but also larger plates and the like.
(20) As noted above, sleeve 36 shown in FIGS. 2 and 3 and similarly sleeve 44 shown in FIG. 4 can be made for example of a thermoplastic polymer or of polypropylene or other plastic materials. The sleeves also can be made of hard rubber materials or of combinations of hard rubber materials and plastic materials. Thus for example in the embodiment shown in FIG. 5 the outer tubular member 48 could be made of polypropylene whereas the inner tubular member 46 could be made of a hard rubber material.
(21) In FIG. 6 there is shown an embodiment which similar as that of FIG. 5 which comprises an inner tubular member 58 which is arranged to be telescopically extendable form an outer tubular member 60. In order to provide for a fixation of the inner tubular member 58 with respect to the outer tubular member 60, the outer tubular member 60 comprises several projections 62 which project inwardly towards the inner tubular member 58. These projections 62 engage corresponding recesses 64 which are provided at the inner tubular member 58 so as to secure the inner tubular member 58 at any of the extended or non-extended positions. As in the embodiment of FIG. 5, also in the FIG. 6 embodiment the outer tubular member 60 comprises latching members 66 that are provided in a lower section of the outer tubular member 60, which latching members 66 as shown in the side view of FIG. 7 extend downwardly below the base bar 34 so as to fixedly attach the outer sleeve 60 to base bar 34.
(22) FIG. 8 shows an embodiment wherein a holding spike 30 which is located within basket 10 so as to be directly above the path of movement of one of the spray nozzles 20 of spray arm 12 is provided with a sleeve 70 which is made of a resilient material, such as rubber, which has been slit over holding spike 30 so as to differentiate such holding spike from the other holding spikes of basket 10.
(23) In FIG. 9 there is shown a sleeve 72 which comprises a plurality of projections 74 and 76 which are designed to stabilize hollow vessels which are to be held in an upside-down orientation on holding spike 30. Projections 74 and 76 and optionally the entire sleeve 72 is made of a resilient material such as a soft plastic or rubber material so that projections 74 and 76 adapt to the shape of the particular vessel which is put over holding spike 30.
(24) FIG. 10 shows an embodiment that is similar to that of FIG. 9 and which differs from the embodiment of FIG. 9 only in that in the embodiment of FIG. 10 the geometry of the holding projections 78 and 80 is different.
(25) In the embodiment of FIG. 11 the sleeve 82 is provided with a plurality of vertically oriented wall-like projections 84 which are made of a resilient material so as to secure a hollow vessel during the cleaning operation.
(26) In FIG. 12 there is shown a section of a floor of a dishwasher basket wherein individuals bars 86 of the basket are provided with markings 88 so as to indicate to the user a site 90 for installation of a removable holding spike, which site is located directly above the path of movement of one of the spray nozzles 20.
(27) FIG. 13 illustrates the dishwasher basket of FIG. 12 with a removable holding spike 92 being mounted at the site 90 marked by the markings 88, wherein holding spike 92 comprises a plurality of latching members 94 that can be snapped onto bars 86 of the dishwasher basket so as to securely fasten the holding spike.
