LU86805A1 - STORAGE SYSTEM - Google Patents

Description

DK-8888-M26 -1-

Storage system

The necessarily compact interiors of refrigerators and the like, such as upright freezers and storage cabinets, inherently cause problems with respect to both the use of the limited interior space to the maximum, and establishing easy access to stored items or products. These problems are particularly acute in refrigerators for which, under normal circumstances, products will be introduced and removed several times a day. In addition, because of the conventional way of stacking products in and on relatively deep shelves, to take advantage of the full height between shelves, it is not unusual for the user of the refrigerator to have to remove or move several 15 articles to access a particular article.

Various attempts have been made to facilitate the arrangement of products in a refrigerator, in particular for easy subsequent access thereto. For example, attention is drawn to the following patents in the United States of America: 20 1,687,149 Shauer et al October 9, 1928 2,070,055 Levien February 9, 1937 4,191,437 Funke March 4, 1980.

Each of these patents provides a refrigerator storage system in which one or two rotary trays 25 are mounted on a refrigerator shelf, so that products can be received on the shelf and, thanks to a rotation thereof. , selectively brought to the rear of the * -2- refrigerator for storage, or to the front of the refrigerator for unobstructed direct access to them. In each of these cases, the turntable is simply a replacement for the actual shelf surface and, while providing improved access to the products kept in the refrigerator, probably reduces the actual storage space and does not not attack the problem of full use of the vertical space between the shelves of a refrigerator.

Although it is not in the context of the 10 refrigerators, it has long been known, as illustrated by the following patents, to hang units similar to turntables to overlying supports, generally shelves: 2,010,962 Reinsberg August 13, 1935 15 2,082,088 Wilson June 1, 1937 2,431,837 Spotts et al December 2, 1947 2,525,538 Kid October 10, 1950 2,754,166 Ohm July 10, 1956

The majority of these patents provide for bolting 20 or screwing the turntable assembly on the overlying support, Reinsberg indicates in one embodiment, the call for hook members recalled by spring.

Suspension means in the form of hooks will also be encountered in the following patent: 25 1,684,558 Schwartz September 18, 1928

In the Schwartz patent, the hooks engage the pipes of the refrigerating unit of a refrigerator and in turn support shoulder members to receive a drainage bowl.

The present invention provides a particular storage system which finds special utility both to improve storage space in a refrigerator and in a manner which, despite an increase in emma capacity - '' -3- gasing the refrigerator, actually improves access to its contents.

The storage system of the invention is particularly suitable for use in combination with the normal wire shelves or shelves encountered in refri-5 managers and will accept relatively large variations in shelf size, wire spacing, etc.

The storage system of the invention essentially comprises a mounting support engaging the shelf and a shelf or service assembly suspended from the bracket.

The support is particularly intended to be handled by hand for a locked engagement which can be released directly with the wires of a shelf, using only the structure of the support and without additional mechanical characteristics. The plate assembly engages in sliding in the support 15 and is retained there for a support and a rotary presentation of products.

The support itself includes an elongated flat base having mounting arms secured to its opposite edges. Each mounting arm comprises a part or wall 20 directed downwards internally, ending on its lower edge, in an inverted elbow which is connected in one piece to an external part or wall directed upwards and slightly flared outwards. . The outer wall protrudes above the planar base and terminates in an outwardly facing wing having an downwardly facing outer retaining lip. Each of the outer walls can be bifurcated in its upper part, the support wing and the associated retaining lip to define, in fact, a pair of aligned spaced fingers. The internal and external walls of each mounting arm, in their planes, are rigid and not extensible so as to provide a positive suspension means for the support and the plate suspended in turn suspended from the support. However, each arm and in particular * its relatively thin outer wall, is flexible laterally, either by itself or in the adjacent part of the elbow, for a selective movement of the arms towards each other in the purpose of an upward introduction between the wires of a conventional refrigerator shelf.

In order to accept a tray assembly, the support comprises a pair of opposite L-shaped supports directed downwards, integral with the base and extending longitudinally with respect thereto. The L-shaped supports define a pair of spaced shoulders which receive 10 and support an enlarged head on the handle of the tray assembly.

According to wishes, the mounting support will preferably be injection molded in one piece, made of plastic material with high impact resistance.

The tray assembly, the separate elements of which will preferably be molded also of high density polyethylene, comprises a base with an axial threaded socket internally and directed upwards, and an annular bearing ring. An annular bearing housing is located in the bearing ring 20 and in turn supports an overlapping rotary platform, for rotation relative to the base. The platform includes a central boss in which the base bush is freely housed. The rotary platform is retained on the base by an elongated vertical handle having a threaded lower barrel end 25, screwed into the internally threaded sleeve, and an enlarged retaining collar overhanging the boss, so that a movement upward of the rotary platform with respect to the base is excluded without limiting the free rotary movement of the platform. The upper end 30 of the handle ends in a disc-shaped or flat circular head which, in turn, is slidably housed between the L-shaped supports of the mounting support, in supported engagement on the support shoulders opposite directed inward, of the support.

Other details and characteristics of the invention will emerge from the description below, given by way of nonlimiting example and with reference to the appended drawings, in which: FIG. 1 is a perspective view of the system storage of the present invention, mounted on and extending downward from a wire shelf or shelf of a refrigerator.

FIG. 2 is a detail view in transit section) on a larger scale, practically along a plane corresponding to line 2-2 in FIG. 1.

Figure 3 is a detail view in cross section of the support of Figure 2, illustrating the mounting method.

Figure 4 is a perspective view from above of the support with the handle of the tray assembly separate therefrom.

Figure 5 is a perspective view from below of the support.

Figure 6 is a top plan view of the support.

Figure 7 is a front elevational view of the support.

FIG. 8 is a cross-sectional view of the support practically along a plane passing through the line 8-8 in FIG. 6.

FIG. 9 is a view in longitudinal section of the support, practically along a plane passing through the line 9-9 in FIG. 6.

Figure 10 is a perspective view from above of the tray assembly.

Figure 11 is a developed perspective view> of the constituent elements of the tray assembly.

Referring more particularly now to the drawings, the support system of the present invention comprises a mounting support 20 and a tray assembly 22 cooperatively engaged with the support 20 so as to be suspended and able to rotate by compared to this one.

The support 20, with particular reference to FIGS. 1 and 2, is specifically intended to engage, extending downward, a wire shelf or conventional refrigerator shelf 24 of the type comprising multiple rigid elongated parallel wires laterally spaced 26 welded, at their opposite ends, to front and rear transverse support rods 28. Such shelves will normally also include one or more intermediate support rods 30 for additional stabilization of the wires 26. The support 20, preferably a single piece of high density polyethylene 15 injection molded, comprises both means for engagement and locking on the refrigerator shelf 24 and means for receiving and fixing the tray assembly 22 without the addition of separate mechanical fasteners or the like.

More particularly, the support 20 comprises an elongated flat base 32 terminating at its front and rear ends by reinforcing or stiffening ribs 34 directed upwards, each extending transversely over the entire width of the base 32.

A pair of elongated mounting arms 36 is formed in one piece along the opposite longitudinal edges of the base 32.

A pair of elongated mounting arms 36 is formed in one piece along the opposite longitudinal edges 30 of the base 32. These arms 36 are reproductions directed opposite each other. Each arm 36 comprises an internal part or wall 38 integral with the, and both directed downwards and widening slightly outwards from the corresponding longitudinal edge of the base 32. An external part or wall 40 is generally parallel to each wall 38 in association spaced outwardly with it and is connected ". In one piece to the lower edge of the corresponding internal wall 5 38 by a bend or bend in the shape of a U 42. Each wall external 40 flares slightly outwards relative to the corresponding internal wall 38 and ends in an upper support wing directed towards the outside 44, in a spaced combination above both the base 32 and the ribs of support 34 thereon. Each outwardly facing wing in turn terminates in a downwardly directed retaining lip 46 along its outer edge. As illustrated, each outer wall 40 may be forked or forked centrally ed through its lip, its wing and its upper edge 15, in order to define a pair of aligned finger parts 48, case in which each finger part 48 will comprise a corresponding part of both the support wing 44 and the retaining lip 46. Although this has not been particularly illustrated, the bifurcated external walls 40 will allow mounting of the support 20 in a position centered under an intermediate support rod 30 of a refrigerator shelf 24, offering a thus an auxiliary means for limiting the sliding movement from front to back of the support relative to the shelf.

With reference to the end elevation view of FIG. 7, as well as to the sectional views of FIGS. 2 and 3, it is envisaged that the external walls 40 and the immediately adjacent portion of the elbows or elbow parts 42 are relatively thinner than the inner walls 38 and 30 capable of bending inward when manual pressure is applied thereto. This bending, although illustrated in FIG. 3 as taking place mainly at the elbows 42, can also occur in the external walls 40 as well as, to a much lesser extent, in the internal walls 38. Such bending is made possible by the very nature of the support material 20 and an elastic resistance is opposed to it with the memory characteristics of the material bringing the 5 mounting arms 36 back to their original positions when the pressure is released. The essentially rigid nature of the internal and external walls, and the associated wings 46 and retaining lips 46, makes it possible to have a stable mounted support, despite the capacity for lateral elastic bending for mounting and removal purposes in the manner sketched in Figure 3.

Continuing to refer to FIG. 3 as well as to FIG. 2, the support 20, by virtue of the elastic bending laterally inwards of the mounting arms 36, can easily be introduced upwards between the wires 26 of a shelf 15 of refrigerator 24, with the arms allowed to move outward to locate the support wings 46 in superimposed association with adjacent wires among the wires 26. After pressing on the wires 26, the wires will be enclosed between each external wall recalled towards the outside and the corresponding retaining lip located on the outside 46. A lateral displacement of the support relative to the wires of the shelf 24 will be effectively excluded and a longitudinal displacement will be opposed to the friction grip of the wires by the support. Likewise, by the simple fact of engaging one end of the support 20 against an intermediate shelf rod 30, a longitudinal displacement of the support can be prevented in at least one direction. An arrangement of the support 20 in a manner where the shelf rod 30 extends through the recess between the finger parts 48 of the mounting arms 46 will exclude movement in the two longitudinal directions.

It must also be realized that the capacity of the mounting arms 46 to flex inward allows adaptation of the support 20 to variations in spacing of the wires, dimension of the wires, etc., in order to thus actually offer universal support. Furthermore, to increase the flexibility of use of the support, it will also be noted that openings 50 have been made in the support wings 44, an opening for each wing part associated with the individual finger parts. Such openings are particularly intended to receive mounting screws or similar fixing elements engaged upwards therefrom and in fixed engagement with an overlying massive shelf, for example a wooden shelf in a cabinet. cooked.

In order to receive and accept the plate assembly 22, the mounting support 20 is provided with support means comprising a pair of L-shaped supports, spaced laterally, parallel, directed opposite 52 integral with 15 and extending along a major portion of the base 32 in downward association therewith. The supports 52 include elongated side walls 54 extending downward from upper edges integral with the base 32 and having one-piece support shoulders 56 directed inwards 20 along their entire length, along their lower edges. These shoulders 56 define between them an access slot and comprise, approximately at the midpoint along their length, a pair of situation recesses 58 in their respective upper surfaces.

The opposite L-shaped supports 52 open forward or towards the front of the support to receive a corresponding part of the tray assembly, as explained now. Each of the associated supports 52 in turn comprises an end wall 60 which defines a rear stop 30 at the introduction of the plate assembly, and acts simultaneously as a means for stiffening the support shoulders 56.

As will be seen from the drawings, the base 32 includes a pair of elongated holes or slots -10-62 in alignment with and above the L-shaped supports 52. Such holes or slots, particularly when it this is a particularly low shelf or refrigerator shelf, will allow visual observation of the introduction of the corresponding part of the tray assembly and will thus facilitate its proper arrangement or orientation.

Referring now to the cooperating tray assembly 22 and as will be seen in particular from Figures 1 and 2, the tray assembly 22 is particularly suitable for use in combination with the carrier 20. Accordingly, the tray assembly releasably engages the mounting bracket 20 such that the tray assembly 22 is supported exclusively from the overlaying shelf or shelf, providing a flat -different support form in addition to the shelves or shelves your refrigerator provided normally.

Referring to Figures 2 and 11 in particular, the tray assembly 22 includes a generally planar circular base 64 having an integral peripheral peripheral wing, directed upwards 66 and an internal wing 68 concentric with the wing 66 and spaced inwardly thereof over a relatively small distance to define therebetween an annular bearing path 70 directed upwards. An internally threaded integral socket 72, projecting upwards, extends vertically upwards from and at the location of the central axis of the base 64 and, as illustrated in FIG. 2, can open axially through the bottom of the base 64. The annular wall of the sleeve 72 extends over a considerable distance above the height of the annular wings or ribs 66 and 68 and is stiffened, together with the flat part of the base itself, by a multiplicity of integral ribs 74 extending radially between the wall of the sleeve 72 and the internal annular wing 68. These ribs 74 will normally have a height slightly lower than that of the annular wing 68. The base 64 is completed by a short annular integral rib 76 extending from the lower surface of the base in general alignment with the wing projecting upward 68, defining a path.

5 An annular bearing housing 78 is housed in the bearing path 70. This bearing housing 78 comprises a multiplicity of retaining sockets 80 at points spaced peripherally around it, each socket 80 ensuring the rotary mounting of a corresponding bearing 82 which engages the path surface or ring by rolling and simultaneously projects above the upper edges of the wings 66 and 68 defining the path.

The actual support, in the form of a tablet, for the products, containers or the like 84 on the tray assembly 22 is a planar circular rotary platform 86.

This platform 86 is located in parallel overlay association with the base 64 and is supported for rotary movement relative to the base by the individual bearings 82 which engage the bottom surface of the platform 86. An annular boss making upward projection 88 is formed in one piece on the axis of the platform 86. This boss has a dimension allowing it to be telescopically housed around the upper part of the base socket 72 for free rotation around this one. The upper edge of the boss 25 88, as shown in particular in FIG. 2, has a height such that, when it is properly in place, it ends slightly below the upper edge of the socket 72. The platform 86 is completed by a peripheral retaining rib 90 shaped in one piece upwards, ending in a skirt 92 directed downwards which surrounds the outer wing 66 of the base 64 in association spaced outwardly therewith. As will be appreciated, the rib 90 acts · as a means for retaining products on the rotary platform -12- 86, while the skirt constitutes a means of partial closure and protection for the bearing assembly .

The base 64, the bearing housing 78 and the rotary platform 86 are held in active mutual association 5 by the vertically elongated handle 94. The latter comprises an end of the lower barrel externally threaded 96 which is housed by screwing in the opening sleeve upwards 72 from the base 64. An integral annular retaining collar 98 is formed on the handle shaft immediately above its threaded lower end portion 96. This collar, when the end is engaged lower threaded 96 in the socket 72, rests on the upper annular edge of the socket 72 and extends outward in retaining association superimposed with the axial boss 88 on the rotary platform 15 86. The collar 98, supported on the upper edge of the sleeve 72, will be located slightly above the upper edge of the annular boss 88, so as to exclude an upward withdrawal of the platform 86 without interference with its desired rotary movement re.

The upper end of the handle 94, or more particularly its barrel, ends in a circular or disc-shaped flat head 100 which constitutes the releasable engagement means of the plate assembly 22 with the mounting support 20 .

More particularly and with reference to FIG. 2, the barrel of the handle 94 has a dimension which allows easy passage through the slot defined between the opposing support shoulders directed inwards 56. The enlarged head 100 a in turn a diameter markedly greater than the width 30 of the slot and, after the introduction of the barrel through the open front end defined by the opposite L-shaped supports 52, is applied to the upper surfaces of the shoulders 56 and, preferably, in the opposite situation recesses 58 with a configuration allowing the head 100 to be received and closely followed. The combination of the recesses 58 and the end walls 60 facilitates a proper positioning of the head. handle 100 in the center of the mounting bracket, 5 for properly balanced support of this head.

It is envisaged that the length of the handle 94 is such that it allows a usable height between the rotary platform 86 and the overlying shelf 24 of the refrigerator, while simultaneously avoiding to a large extent any interference with the free use of an underlying shelf or shelf. Although the tray assembly can be used for support and rotating arrangement of any number of products, it is particularly suitable for supporting sector-shaped containers for refrigerator of the general type suggested in phantom in the figure 1.

The head and slot mutual engagement of the tray assembly and the mounting bracket provides a simplified means for both mounting and removing the tray assembly with the latter, when it is removed, capable of just as well be suitable for use as a trolley on a table, the annular rib directed downwards 76 on the base 64 providing a stable support. Likewise, the enlarged head 100, although having a particular configuration for engagement in the slot of the support and support on the opposite shoulders facing inwards, also constitutes a means for manually lifting the assembly of tray.

In addition, the mounting bracket 20 and therefore the entire storage assembly can be easily removed simply by rapid manual manipulation of the mounting bracket itself. As such, the storage assembly can be moved from one refrigerator shelf to another as desired, thereby allowing for virtually instant redisposition of the internal storage capacity of a refrigerator.

5

Claims (28)

1. Storage system intended to be engaged by being suspended therefrom, with an overlying shelf, shelf or similar structure, with a mounting support and a tray assembly which can be supported in suspension association by said support, characterized in that said mounting bracket comprises a horizontal base having opposite side edges, a pair of opposite facing mounting arms, one arm on each of said side edges, each arm terminating in spaced association above said base by a laterally directed mounting wing for engagement with the overlying structure, a pair of support shoulders directed laterally inwardly, integral with said base and in underlying association therewith, said shoulders 15 support defining between them a slot parallel to the lateral edges of said base, said tray assembly comprising a vertically elongated handle having a top end eure and a lower end, a product receiving platform mounted on the end of said handle, the upper end of said handle carrying an enlarged head of transverse dimension greater than the width of the slot defined between the shoulders of support for said mounting support, said handle, immediately below said head, capable of being received in said slot for a support engagement of said head on said support shoulders. 2. Storage system according to claim 1, characterized in that the mounting wings of said mounting arms are directed outward relative to the corresponding lateral edges of the base, said mounting arms being flexible elastically laterally for a selective manual bending laterally inward of said arms and mounting wings thereon to an inward bending position, said mounting arms being biased elastically outward from said position inward bending. 3. Storage system according to claim 2, characterized in that each of said mounting arms 5 comprises an inner wall extending downward from the corresponding lateral edge of said base, an outer wall in generally parallel spaced association outwardly with said inner wall, and joining means mutually connecting the respective lower edges of each inner wall and the corresponding outer wall, each outer wall extending upwards in spaced association above said base and ending in one of said mounting wings. 4. A storage system according to claim 3, characterized in that each outer wall is relatively thinner than the corresponding inner wall and is inherently elastically flexible laterally. 5. Storage system according to claim 4, characterized in that each of said external arms is bifurcated transversely, by defining a pair of parts of fingers in the same plane, each comprising an upper part of the corresponding arm and a part of the 'Corresponding mounting wing directed laterally. 6. Support system according to claim 5, characterized in that said mounting support is an element molded in one piece. 7. Support system according to claim 3, characterized in that each of said external arms is bifurcated transversely, by defining a pair of finger parts in the same plane, each comprising an upper part of the corresponding arm and a part of the corresponding mounting wing directed laterally. 8. Support system according to claim 3, characterized in that each of said -Ilse mounting wings ends with an external retaining lip directed downwards. 9. Support system according to claim 3, characterized in that it comprises a situation recess 5 defined in the upper surface of each shoulder and having a configuration for receiving with interlocking the head of the handle of the tray assembly, 10. Support system according to claim 9, characterized in that it comprises an opposite pair 10 of L-shaped supports, each support shoulder comprising the horizontal part of one of the L-shaped supports, each support comprising a side wall engaged directly between the corresponding shoulder and the overlying base, and an end wall engaged between each shoulder and the overlying base, perpendicular to the corresponding side wall and defining an internal termination of the 'shoulder. 11. Support system according to claim 3, characterized in that it comprises mounting openings made in said mounting wings for the reception of recessed fastening elements. 12. Support system according to claim 9, characterized in that said tray assembly comprises a horizontal tray base, a bush opening axially upward on said tray base, said product receiving platform overhanging. said tray base, bearing means supporting said platform on said tray base for rotation of said platform relative to said tray base, a central opening formed in said platform in alignment with said socket, the end of said handle being received freely through the platform opening and in fixed engagement in said socket for direct support of said tray base from said handle. -18- 13. Storage system according to claim 12, characterized in that said sleeve is defined by an annular wall directed upwards passing through the platform opening and projecting above the latter, a collar 5 widened on said handle above its lower end, said collar engaging the upper end of said sleeve wall in spaced association above said platform for a freely rotating retainer of said platform. 14. A storage system according to claim 13, characterized in that it comprises radial reinforcing ribs on said tray base between said socket wall and said bearing path. 15. Storage system intended to be engaged, while suspended, with an overlying shelf structure, shelf 15 or the like, with a mounting support for mounting and supporting a tray assembly in association directed downwards with the latter, characterized in that said mounting bracket comprises a horizontal base having opposite side edges, a pair of mounting arms directed opposite, one arm on each of said side edges, each arm ending in association spaced above said base, by a mounting wing directed laterally outward for engagement with an overlying structure, said mounting arms being elastically flexible laterally for selective manual bending laterally inward of said arms and mounting wings thereon to an inward bending position, said mounting arms being biased elastically outwardly from said p osition of inward bending, and support means integral with said base and in underlying association with the latter for releasable support engagement with the plate assembly. 16. Storage system according to claim. 15, characterized in that each of said mounting arms -19- comprises an inner wall extending downward from the corresponding lateral edge of said base, an outer wall in generally parallel association spaced outwardly with said inner wall , and connecting means mutually connecting the respective lower edges of each internal wall and the corresponding external wall, each external wall extending upwards in spaced association above said base and ending in one of said wings mounting. 17. Storage system according to claim 10 16, characterized in that each external wall is relatively thinner than the corresponding internal wall and is by nature flexible elastically laterally. 18. Storage system according to claim 17, characterized in that each of said external arms is bifurcated transversely, by defining a pair of finger parts in the same plane, each comprising an upper part of the corresponding arm and a part of the 'laterally directed mounting wing. 19. Support system according to claim 20 18, characterized in that said mounting support is an element molded in one piece. 20. Support system according to claim 16, characterized in that each of said external arms is bifurcated transversely, by defining a pair of parts of fingers in the same plane, each comprising an upper part of the corresponding arm and a part of the mounting flange directed laterally corresponding. 21. Support system according to claim 16, characterized in that each of said mounting wings 30 ends in an external retaining lip directed downwards. 22. Support system according to claim 16, characterized in that said support means comprise an opposite pair of L-shaped supports, each support comprising a horizontal shoulder portion and a side wall engaged directly between the corresponding shoulder and the overlying base, and an end wall engaged between each shoulder and the overlying base, perpendicular to the corresponding side wall and defining a termination towards the inside of the shoulder. 23. Support system according to claim 22, characterized in that it comprises a situation recess 10 defined in the upper surface of each shoulder. 24. Support system according to claim 16, characterized in that it comprises mounting openings made in said mounting wings for the reception of pressed fastening elements. 25. Storage system intended to be engaged, while suspended, with a shelf, a shelf or similar structure overlying it, with a tray assembly, characterized in that said tray assembly comprises a vertically elongated handle having a upper end and lower end, a product receiving platform mounted on the lower end of said handle, the upper end of said handle carrying an enlarged head, a horizontal tray base, a sleeve opening axially upward on said tray base, said product receiving platform overhanging said tray base, bearing means supporting said platform on said tray base for rotation of said platform relative to at said tray base, a central opening made in said platform in alignment with said socket, the lower end of said handle being freely received through the platform opening and in fixed engagement in said socket for direct support of said tray base from said handle. "-21- 26. Storage system according to claim 25, characterized in that said socket is defined by an annular wall directed upwards passing through said platform opening and projecting above it, an enlarged collar on said handle above its lower end, said collar engaging the upper end of said socket wall in spaced association above said platform, for a freely rotating retainer of said platform. 27. Storage system according to claim 26, characterized in that it comprises radial reinforcement ribs on said plate base, between said sleeve wall and said bearing path. 28. Storage system intended to be engaged, 15 while suspended, with an overlying shelf, shelf or similar structure, with a mounting support and a tray assembly which can be supported in a downwardly directed association by said support, characterized in that said mounting support comprises a horizontal base having 20 opposite side sides, a pair of mounting arms directed opposite, one arm on each of said side edges, each arm ending in spaced association above said base by a mounting wing for engagement with an overlying structure, said mounting arms being elastically flexible laterally for manual selective bending laterally inward of said arms and mounting wings on those -this to an inward bending position, the mounting arms being elastically biased outward relative to said inward bending position laughing, 30 support shoulders integral with said base and in underlying association therewith, said support shoulders defining between them a slit, said tray assembly comprising a vertically elongated handle having an upper end and a lower end, a product receiving platform mounted on the lower end of said handle, the upper end of said handle carrying an enlarged head with a transverse dimension greater than the width of the slot defined between the shoulders of support for said mounting support, said handle being able to be received, immediately below said head, in said slot for a support engagement of said head on said support shoulders. 10