CONTROLLED GRAVITY FEED SHELF SYSTEM
A controlled gravity feed shelf system features a framework and at least one insert. The insert includes a number of support rails at least partially forming a front portion of the insert and a rear portion of the insert. A number of first rollers are rotatably mounted on the front portion of the insert, where each of the first rollers has a first diameter. A number of second rollers are rotatably mounted on the rear portion of the insert, where each of said second rollers has a second diameter. The first diameter of the first rollers is smaller than the second diameter of the second rollers. The insert is positioned within the framework so as the rear portion of the insert is positioned vertically higher than the front portion of the insert.
This application claims priority to provisional patent application No. 61/423,398, filed Dec. 15, 2010, currently pending.
FIELD OF THE INVENTIONThe present invention generally relates to shelving systems and, more particularly, to a controlled gravity feed shelf system.
BACKGROUND OF THE INVENTIONGravity feed shelf systems are well known. Such systems typically feature inclined shelves and are useful for dispensing products ranging from two-liter beverage bottles to automotive batteries to cans of soup and the like. Examples of prior art gravity feed shelf systems are presented in U.S. Pat. No. 6,267,258 to Wilkerson et al. and U.S. Pat. No. 4,715,765 to Agnoff. In these prior art systems, however, products may either fail to feed forward or feed forward so quickly that stops are required to prevent the product from passing the front edge of the shelf. These stops can make it difficult to restock and/or remove products from the shelves. Additionally, when products are stacked on top of each other, a controlled stop is essential to prevent the top level of product from falling off of the shelf due to an uncontrolled sudden stop.
In addition, a number of prior art shelf systems use fairly complex pusher mechanisms to move stocked items to the front of the shelf. One such mechanism is described in U.S. Pat. No. 6,820,754 to Ondrasik.
Furthermore, the advent of deeper non-gravity feed shelves, in the range of 48 inches deep, have allowed retailers to stock far more product on the retail shelves thus making more product available for consumers as well as reducing the number of times a day that the shelves need to be stocked. Unfortunately, when the stocked products get further than 24″ from the front edge of the shelving system, most consumers cannot reach the stock remaining on the shelf resulting in the possibility of lost sales.
In view of the above, a shelving system is needed that will feed stock to the front of the shelf in a controlled fashion as products are removed.
An embodiment of the controlled gravity feed shelf system of the present invention is indicated in general at 10 in
In accordance with the present invention, for an applied load (product weight), a larger diameter roller will feed products more consistently than a smaller diameter roller at reduced shelf angles. The shelf inserts 12 of the present invention each provide a combination of larger diameter rollers at the rear of the shelf to consistently initiate the forward motion of products stocked on the shelves and smaller diameter rollers on the forward portion of the shelf to slow products as they approach the front of the shelf.
An enlarged view of a shelf insert 12 is provided in
With reference to
As illustrated in
With reference to
An alternative embodiment of the present invention is indicated in general at 50 in
The embodiment of
It should be noted that the insert of
Embodiments of the shelf inserts of the controlled gravity feed shelf system of the invention may be used to retrofit existing gondola systems.
As an alternative to the embodiments described above, the present invention may be optionally constructed so that the shelf inserts are not removable from the gondola framework (i.e. they are constructed integrally into the framework).
While the preferred embodiments of the invention have been shown and described, it will be apparent to those skilled in the art that changes and modifications may be made therein without departing from the spirit of the invention, the scope of which is defined by the appended claims.
Claims
1. A controlled gravity feed shelf insert adapted to be positioned on a shelf system framework comprising:
- a. a plurality of support rails at least partially forming a front portion of the insert and a rear portion of the insert;
- b. a plurality of first rollers rotatably mounted on the front portion of the insert, each of said first rollers having a first diameter;
- c. a plurality of second rollers rotatably mounted on the rear portion of the insert, each of said second rollers having a second diameter where said first diameter is smaller than said second diameter.
2. The controlled gravity feed shelf insert of claim 1 wherein the plurality of first and second rollers are removable from the plurality of support rails.
3. The controlled gravity feed shelf insert of claim 1 wherein the insert has a first side and a second side and wherein the plurality of first and second rollers are positioned on the first side of the insert only so that the insert may be flipped over to provide a stationary shelf surface.
4. The controlled gravity feed shelf insert of claim 3 wherein the stationary shelf surface features raised ribs.
5. The controlled gravity feed shelf insert of claim 1 wherein the insert further includes a structural member positioned generally perpendicular to and joining the plurality of support rails.
6. The controlled gravity feed shelf insert of claim 1 wherein the insert further includes a front structural member positioned generally perpendicular to and joining the plurality of support rails to define a front edge of the insert and a rear structural member positioned generally perpendicular to and joining the plurality of support rails to define a rear edge of the insert.
7. The controlled gravity feed shelf insert of claim 1 wherein the first diameter of the first rollers is in the range of about one to three inches and the second diameter of the second rollers is in the range of about three to five inches.
8. The controlled gravity feed shelf insert of claim 1 further comprising:
- d. a plurality of first roller assemblies each including alternating first rollers and first axles; and
- e. a plurality of second roller assemblies including alternating second rollers and second axles wherein said first and second roller assemblies are mounted on the support rails.
9. The controlled gravity feed shelf insert of claim 8 wherein the support rails include slots that removably receive the first and second roller assemblies.
10. A controlled gravity feed shelf system comprising:
- a. a framework;
- b. an insert including: i) a plurality of support rails at least partially forming a front portion of the insert and a rear portion of the insert; ii) a plurality of first rollers rotatably mounted on the front portion of the insert, each of said first rollers having a first diameter; iii) a plurality of second rollers rotatably mounted on the rear portion of the insert, each of said second rollers having a second diameter where said first diameter is smaller than said second diameter;
- c. said insert positioned within the framework so as the rear portion of the insert is positioned vertically higher than the front portion of the insert.
11. The controlled gravity feed shelf system of claim 10 wherein the inserts are removable from the framework.
12. The controlled gravity feed shelf system of claim 11 wherein the insert has a first side and a second side and wherein the plurality of first and second rollers are positioned on the first side of the insert only so that the insert may be flipped over to provide a stationary shelf surface.
13. The controlled gravity feed shelf system of claim 12 wherein the stationary shelf surface on the second side of the insert features raised ribs.
14. The controlled gravity feed shelf system of claim 10 wherein the plurality of first and second rollers are removable from the plurality of support rails.
15. The controlled gravity feed shelf system of claim 10 wherein the insert further includes a structural member positioned generally perpendicular to and joining the plurality of support rails.
16. The controlled gravity feed shelf system of claim 10 wherein the insert further includes a front structural member positioned generally perpendicular to and joining the plurality of support rails to define a front edge of the insert and a rear structural member positioned generally perpendicular to and joining the plurality of support rails to define a rear edge of the insert.
17. The controlled gravity feed shelf system of claim 10 wherein the first diameter of the first rollers is in the range of about one to three inches and the second diameter of the second rollers is in the range of about three to five inches.
18. The controlled gravity feed shelf system of claim 10 further comprising:
- d. a plurality of first roller assemblies each including alternating first rollers and first axles; and
- e. a plurality of second roller assemblies including alternating second rollers and second axles wherein said first and second roller assemblies are mounted on the support rails.
19. The controlled gravity feed shelf system of claim 18 wherein the support rails include slots that removably receive the first and second roller assemblies.
20. The controlled gravity feed shelf system of claim 10 wherein the framework includes a bracket that positions the rear portion of the insert vertically higher than the front portion of the insert.
Type: Application
Filed: Dec 15, 2011
Publication Date: Nov 15, 2012
Inventors: Taft O'Quinn (Inola, OK), Michael Martin (Fayetteville, AR), Carrie Martin (Fayetteville, AR), Val-Jean Duchene (Centerton, AR)
Application Number: 13/327,582
International Classification: A47F 1/04 (20060101);