Molded shelf
A shelf assembly includes a plastic body and a frame, which includes a pair of spaced apart side frame members. In addition, the frame is adapted for mounting the shelf assembly to a mounting surface. The plastic body forms a shelf element, which extends between the side frame members. Furthermore, the plastic body has portions that encapsulate at least portions of the side frame members wherein the portions of the side frame members are enclosed in the plastic body.
This application claims priority from U.S. provisional Pat. Application Ser. No. 60/478,026, filed Jun. 12, 2003, entitled MOLDED SHELF, by Applicants Bob Bronsink, Alan Dean Picken, William Beckman, and Jay M. Frankhouse, which is incorporated by reference herein in its entirety.
TECHNICAL FIELD AND BACKGROUND OF THE INVENTIONThe present invention relates to a molded shelf and, more particularly, to a molded shelf, that is particularly useful as a refrigerator shelf.
Many conventional refrigerator shelves are formed from a metal frame and a glass shelf plate that is supported by the metal frame, for example, by tabs or the like. The metal frame incorporates a bracket for mounting the shelf in the refrigerator, and typically for releasably engaging vertical rails mounted in the back of the refrigerator.
More recently, the glass shelf plate has been secured to the metal frame by a polymeric member, which is molded onto the glass. The polymeric body forms a spill rim at the transition between the polymeric member and the glass element to provide a “spill safe condition”. However, these more recent shelf assemblies have inherent limitations. While is transition provides a spill rim, the transition between the polymeric member and the glass element also forms a debris sink. In addition, the polymeric member reduces the actual useable area of the shelf plate by virtue of the overlap between the polymeric member and the glass plate. The overlap of the polymeric member with the glass shelf plate also adds bulk to the shelf assembly and, therefore reduces the available vertical space in the refrigerator. Further, while providing additional functionality, the newer designs have added considerable cost to the shelf assembly.
Consequently, there is a need for an improved shelf assembly that can increase the useable space in the refrigerator while providing a shelf assembly that is easy to clean and, further, easier to manufacture.
SUMMARY OF THE INVENTIONAccordingly, the present invention provides a shelf assembly that is easier to clean, is constructed of fewer parts, and, further, offers an increased support surface area. In addition, the shelf assembly may be assembled to occupy less space than many conventional shelf assemblies to thereby increase the vertical useable space, for example, when the shelf assembly is used in a refrigerator setting.
In one form of the invention, a shelf assembly includes a plastic body and a frame, which includes a pair of spaced apart side frame members. In addition, the frame is adapted for mounting the shelf assembly to a mounting surface, such as in a refrigerator. The body forms a shelf element that extends between the side frame members. Furthermore, the plastic body has portions that encapsulate at least portions of the side frame members wherein portions of the side frame members are enclosed in the plastic body.
In one aspect, the frame further includes a transverse member that interconnects the side frame members. In addition, the shelf element extends to the transverse frame member, with the body including a portion encapsulating a portion of the transverse frame member. In this manner, a large portion, if not a majority, of the frame is encapsulated within the plastic body.
In other aspects, the plastic body includes a downwardly depending portion at a front end of the shelf element. For example, the downwardly depending portion is substantially contiguous with the portions of the plastic body that encapsulate the side frame members.
According to other aspects, the plastic body includes an upwardly projecting rib, for example, at one of the side frame members, the transverse frame member, or the front end of the shelf element. Optionally, the plastic body includes an upwardly projecting rib at each side frame member, the transverse frame member, and the front end of the shelf element. Preferably, the ribs are contiguous so that the ribs form a spill barrier rim.
In yet other aspects, the shelf element includes a recessed portion for forming a receptacle. In addition, the shelf assembly may include a lid that encloses the recessed portion to form a compartment. For example, the lid may be hinged to the shelf element or may simply rest on the shelf element. In other aspects, the body includes an upwardly projecting rib adjacent the recessed portion for providing a spill barrier. Optionally, the upwardly projecting rib extends around the full perimeter of the support surface area of the shelf element to form a spill barrier rim. The recessed portion may be provided at the front end of the shelf element or adjacent one of the side frame members.
According to another aspect, the shelf assembly may incorporate a sliding tray that is supported by the portions of the plastic body that encapsulate the side frame members.
In further aspects, the plastic body includes a projecting rail or a recessed groove at each of the portions encapsulating the side frame members for slidingly supporting a tray. For example, a sliding tray may be provided, which is supported by the shelf assembly and is slidable along the side frame members. In addition, the projecting rail or recessed groove may be provided at the inwardly facing sides of the side frame members.
In preferred aspects, the frame comprises a metal frame, such as a metal stamping. The body preferably comprises a plastic polycarbonate material.
The shelf assembly may incorporate other features, such as a lift mechanism for raising or lowering the shelf assembly with respect to the mounting surface.
According to another form of the invention, a shelf assembly includes a frame and a plastic body that similarly encapsulates at least portions of the frame. For example, the frame may include a pair of spaced apart side frame members and a transverse frame member interconnecting the side frame members, with the frame being adapted for mounting the shelf assembly to a mounting surface. The plastic body encapsulates portions of the side frame members and includes a projecting rail or a recessed groove at each of said frame side members. The shelf assembly also includes a shelf element, which is slidingly supported and movable along the rail or groove wherein said shelf element is extendable from said frame.
In one aspect, the body includes a portion encapsulating a portion of the transverse frame member. In addition, the portion of the body that encapsulates the transverse frame member preferably includes at least one projecting rail or a recessed groove for receiving the shelf element when the shelf element is extended into the frame.
In further aspects, the shelf element includes a downwardly depending portion at a front end of thereof. In addition, the shelf element may include a substantially continuous rib, which extends around its perimeter for forming a spill barrier rim. For example, the rib may include rib portions substantially vertically aligned with the side frame members and the transverse frame member to thereby maximize the size of the support surface area of the shelf element.
In other aspects, the shelf assembly may incorporate a sliding tray, with the tray supported by the portions of the plastic body that encapsulate the frame.
According to other aspects, a shelf assembly is formed by molding a plastic body over a frame to at least partially encapsulate the frame. The frame includes spaced apart side frame members, and the plastic body forms a shelf element that at least substantially spans between the side frame members.
It can be appreciated from the forgoing that the present invention provides a shelf assembly that offers increased flexibility of conventional shelf assemblies and further provides the ability to increase the support surface area of the shelf assembly while reducing the height of the assembly so that when mounted in confined space, such as a refrigerator, the shelf assembly provides an increase in storage space while consuming less space.
These and other objects, advantages, purposes, and features of the invention will become more apparent from the study of the following description taken in conjunction with the drawings.
DETAILED DESCRIPTION OF THE DRAWINGS
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Frame 12 includes a pair of spaced apart side frame members 16 and 18, which may be held in space registry (at least at their respective proximate ends) by a transverse member 20, which is secured at its opposed ends to side frame members 16 and 18. For example, side frame members 16, 18 and transverse number 20 may comprise a metal stamping or casting, such as a steel metal stamping or casting, to facilitate fabrication of shelf assembly 10; however, it can be appreciated that side frame members 16, 18, and transverse member 20 may comprise discrete components and/or may be assembled by welding, for example. Provided at the proximal ends 16a and 18a of side frame members 16, 18 are mounting tabs 22 and 24, which adapt shelf assembly 10 to be mounted to a mounting surface, such as a pair of spaced apart rails, such as in a refrigerator. It should be understood that the details of mounting tabs 22 and 24 are provided for illustrative purposes only and that other mounting mechanisms may be used to mount shelf assembly 10.
As noted above, polymeric or plastic body 14 encapsulates side frame members 16 and 18 and, further, preferably, encapsulates transverse member 20. In addition, body 14 extends between side frame members 16 and 18 to form a shelf element 26. As best seen in
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Optionally and preferably, front edge 217d of shelf element 226 incorporates a downwardly extending portion or flange 240, which provides a gripping surface to manually extend shelf element 226 in and out of base 211. Downwardly depending 240 is of similar construction to downwardly depending portions 140 and 40 of the previous embodiments and, further, optionally includes terminal ends 240a and 240b, which abut the terminal ends 228b and 229b of downwardly depending portions 228 and 229, respectively. In this manner, when shelf element 226 is fully extended into base 211, shelf assembly 210 will have a similar appearance to shelf assembly 10. Furthermore, downwardly depending portions 228, 229, and 230 each include upwardly projecting ribs or portions 228c, 229c, and 230c, respectively, which are preferably substantially continuous to form a U-shaped spill barrier. Furthermore, downwardly depending portion 240 similarly includes an upwardly extending portion to form a rib 240c, which together with ribs 228c, 229, and 230c form a substantially continuous perimeter rib that provides a spill safe condition.
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In the illustrated embodiment, shelf element 326 is similar to shelf element 226; however, it can be appreciated that shelf element 326 may be formed similar to shelf element 226′ and incorporate upstanding ribs, such as ribs 219′ to form an integral spill barrier rim. It also should be understood that tray 315 may be incorporated into shelf assembly 10 or 110, with accommodations made in the back wall 317 of tray 315 to accommodate recess 150.
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Shelf assembly 910 further includes a fourth shelf element 916d, which is located adjacent one of the shelf elements, such as shelf element 916c. Fourth shelf element 916d is mounted to shelf elements 916a, 916b, and 916c by a vertical side member 920 and includes a second vertical side member 922, which is aligned with one of the existing rails on the other side of the freeze compartment. Side walls 920 and 922 together with shelf element 916d form an enlarged recess 950 for supporting larger products, such as pizza boxes or the like.
As illustrated, one or more shelf elements 916a, 916b, 916c and/or 916d may be formed with a plurality of apertures to increase airflow through the refrigerator. The shape of these apertures or openings may be varied to provide a decorative function, such as shown in
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While several forms of the invention have been shown and described, it should be appreciated that further modifications and changes will now be apparent to those skilled in the art. For example, as noted in reference to several of the embodiments, various portions of the shelf assemblies may be decorated, for example by an in-mold applique. Furthermore, the plastic forming the various shelf elements and encapsulating the frames may be clear, semi-transparent, or opaque and may be colored and may incorporate pattern or design, such as with an in-mold applique. Therefore, it will be understood that the embodiments shown in the drawings and described above are merely for illustrative purposes, and are not intended to limit the scope of the invention, which is defined by the claims, which follow as interpreted under the principles of patent law including the doctrine of equivalents.
Claims
1. A shelf assembly comprising:
- a frame, said frame having a pair of spaced apart side frame members and said frame being adapted for mounting said shelf assembly to a mounting surface; and
- a plastic body forming a shelf element extending between said side frame members, said plastic body having portions encapsulating at least portions of said side frame members wherein portions of said side frame members are enclosed in said plastic body.
2. The shelf assembly according to claim 1, wherein said frame includes a transverse frame member interconnecting said side frame members, said shelf element extending to said transverse frame member, and said body including a portion encapsulating a portion of said transverse frame member.
3. The shelf assembly according to claim 2, wherein said body includes a downwardly depending portion at a front end of said shelf element.
4. The shelf assembly according to claim 3, wherein said downwardly depending portion is substantially contiguous with said portions encapsulating at least portions of said side frame members.
5. The shelf assembly according to claim 3, wherein said body includes an upwardly projecting rib at one chosen from said side frame members, said transverse frame member, and said front end of said shelf element.
6. The shelf assembly according to claim 3, wherein said body includes an upwardly projecting rib at said side frame members, said transverse frame member, and said front end of said shelf element wherein said ribs form a spill barrier rim.
7. The shelf assembly according to claim 1, wherein said shelf element includes a recessed portion for forming a receptacle.
8. The shelf assembly according to claim 7, further comprising a lid, said lid enclosing said recessed portion for forming a compartment.
9. The shelf assembly according to claim 7, wherein said lid is hinged to said shelf element.
10. The shelf assembly according to claim 7, wherein said body includes an upwardly projecting rib adjacent said recessed portion for providing a spill barrier.
11. The shelf assembly according to claim 9, wherein said shelf element includes a support surface area, said support surface are having a perimeter, and said upwardly projecting rib extending around said perimeter of said support surface area to form a spill barrier rim.
12. The shelf assembly according to claim 7, wherein said recessed portion is provided at said front end of said shelf element.
13. The shelf assembly according to claim 7, wherein said recessed portion is provided adjacent one of said side frame members.
14. The shelf assembly according to claim 1, wherein said body includes at least one structure chosen from a projecting rail and a recessed groove at each of said portions encapsulating at least portions of said side frame members for slidingly supporting a tray.
15. The shelf assembly according to claim 14, wherein said at least one structure chosen from a projecting rail and a recessed groove comprises a recessed groove.
16. The shelf assembly according to claim 14, further comprising a sliding tray, said sliding tray being supported by said shelf assembly and being slidable along said side frame members.
17. The shelf assembly according to claim 14, wherein said portions encapsulating at least portions of said side frame members include inwardly facing sides, said structures provided at said inwardly facing sides.
18. The shelf assembly according to claim 1, wherein said frame comprises a metal frame.
19. The shelf assembly according to claim 18, wherein said metal frame comprises a metal stamping.
20. The shelf assembly according to claim 1, wherein said plastic body comprises a plastic polycarbonate material.
21. The shelf assembly according to claim 1, further comprising a lift, said frame being adapted for movably mounting said shelf assembly to the mounting surface, and said lift for raising or lowering said shelf assembly along said mounting surface.
22. A shelf assembly comprising:
- a frame, said frame having a pair of spaced apart side frame members and a transverse frame member interconnecting said side frame members, said frame further being adapted for mounting said shelf assembly to a mounting surface;
- a plastic body encapsulating at least portions of said side frame members wherein portions of said side frame members are enclosed in said body, said body having at least one structure chosen from a projecting rail and a recessed groove at each of said frame side members; and a shelf element, said shelf element slidingly supported and movable along said structures wherein said shelf element is extendable from said frame.
23. The shelf assembly according to claim 22, wherein said body includes a portion encapsulating a portion of said transverse frame member.
24. The shelf assembly according to claim 23, wherein said portion encapsulating a portion of said transverse frame member includes at least one structure chosen from a projecting rail and a recessed groove for receiving said shelf element when said shelf element is extended into said frame.
25. The shelf assembly according to claim 22, wherein said shelf element includes a downwardly depending portion at a front end of thereof.
26. The shelf assembly according to claim 22, wherein said shelf element includes a perimeter and a substantially continuous rib extending around its perimeter for forming a spill barrier rim.
27. The shelf assembly according to claim 26, wherein said shelf element includes a support surface area, and said rib includes rib portions substantially vertically aligned with said side frame members and said transverse frame member to thereby maximize the size of said supporting surface area of said shelf element.
28. The shelf assembly according to claim 22, wherein said portions encapsulating at least portions of said side frame members include inwardly facing sides, said at least one structure chosen from a projecting rail and a recessed groove provided at said inwardly facing sides.
29. The shelf assembly according to claim 22, wherein said frame comprises a metal frame.
30. The shelf assembly according to claim 29, wherein said metal frame comprises a metal stamping.
31. The shelf assembly according to claim 22, wherein said plastic body comprises a polycarbonate material.
32. A method of forming a shelf assembly, said method comprising:
- providing a frame, the frame including a pair of spaced side frame members;
- encapsulating at least portions of the side frame members in a body; and
- forming a shelf element with the body, the shelf element extending between the side frame members.
33. A method of forming a shelf assembly, said method comprising:
- providing a frame, the frame including a pair of spaced apart side frame members and a transverse frame member extending between the spaced apart side frame members; and
- molding a plastic body around at least portions of the frame wherein the portions of the frame are encapsulated in the plastic body, said molding including forming a shelf element extending between the side frame members.
Type: Application
Filed: Jun 14, 2004
Publication Date: Jan 27, 2005
Inventors: Bob Bronsink (Rockford, MI), Alan Picken (Milford, MI), William Beckman (Holland, MI), Jay Frankhouse (Holland, MI)
Application Number: 10/866,964