Stock rack with pivoted trays

Claim 2

In a stock rack of the type having spaced upright supports and a plurality of superposed trays each mounted on the spaced upright supports for swinging movement about a horizontal axis adjacent a rear edge of the tray from a lower position through an arc of less than 180* to a raised position; the improvement wherein each tray has a rolled rim of substantially circular cross-sectional configuration extending along Said rear edge of the tray, said upright supports being located intermediate the ends of the rolled rim on the trays and each having means defining a plurality of semicylindrical bearing surfaces at vertically spaced locations therealong engaging the outer surface of the rolled rim on a respective one of the trays to swingably support the trays on the upright supports.

Claim 3

A stock rack according to claim 1 including a tension spring at each end of each tray, each tension spring attached to a respective tray forwardly of its rear edge and to an adjacent upright support for yieldably holding the tray in a raised position and for yieldably urging the tray in a rearward direction to press the rolled rim on said one edge of the tray against a respective one of the semicircular bearing surfaces on the upright supports.

Claim 4

A stock rack according to claim 1 wherein each tray includes a generally flat top wall, a depending front flange along the front edge of the tray, and depending side flanges along opposite side edges of the tray, said side flanges having rear portions extending alongside said upright supports at least where said trays are in their lower position to inhibit endwise movement of the trays relative to the upright supports.

Claim 5

A stock rack according to claim 3 wherein said rear portions of said flanges on the trays extend alongside the inner faces of the upright supports and said rolled rim on the rear edge of the tray extends axially beyond said rear portion of the side flanges on the respective tray.

Claim 6

A stock rack according to claim 1 wherein said spaced upright supports include a pair of end upright supports having said semicircular bearing surfaces engaging the rolled rims on said trays adjacent opposite ends of the trays and at least one intermediate upright support having said semicircular bearing surfaces engaging the rolled rims on the trays at a location intermediate the end supports.

Claim 7

A stock rack according to claim 1 wherein said upright supports each have a flange section disposed in a plane transverse to said horizontal axis of the trays and generally U-shaped notches extending inwardly from the edge of the flange section at vertically spaced locations therealong said means defining said semicylindrical bearing surfaces comprising inserts of bearing material disposed in said notches in the flange sections of the uprights and having said semi-cylindrical bearing surfaces at the inner surface thereof.

Claim 8

A stock rack according to claim 6 wherein said inserts of bearing material have a groove in the outer surface thereof receiving the flange section of the upright supports adjacent the notches to inhibit axial movement of the inserts relative to the upright supports.

Claim 9

A stock rack according to claim 6 wherein said inserts of bearing material are disposed adjacent the base of the notches in the flange section of the upright supports and said notches have inwardly extending abutment shoulders engaging the bearing inserts to retain the inserts in the notches.

Claim 10

A stock rack according to claim 6 wherein said bearing material is a resilient plastic.

Claim 11

A stock rack according to claim 6 wherein said notches in at least one upright support have wall portions adjacent the outer ends of the notches spaced apart a distance less than the diameter of the rolled rim on the rear edge of the tray to retain the tray in the notches.

Claim 12

A stock rack according to claim 6 wherein each tray includes a generally flat top wall and said rolled rim on the rear edge of the tray extends above the top wall of the tray, and said notches each have a generally horizontal bottom wall extending generally tangent to said semicircular bearing surface.

Claim 13

A stock rack according to claim 1 wherein each tray includes a generally flat top wall and said rolled rim on the rear edge of each tray extend above the top wall of the tray.

Claim 14

In a stock rack of the type having spaced upright supports and a plurality of superposed trays each swingably mounted on the spaced upright supports for swinging movement about a horizontal axis adjacent the rear edge of the tray from a lower position through an arc of less than 180* to a raised position; the improvement wherein the truck has a pair of end upright supports adjacent opposite ends of the trays and at least one intermediate support intermediate the ends of the trays, each tray having a rolled rim of substantially circular cross-sectional configuration extending along the rear edge of the tray, at least said intermediate support having means defining a plurality of semicircular bearing surfaces at vertically spaced locations therealong each engaging the outer surface of the rolled rim on a respective one of the trays to swingably support the trays intermediate their ends on the intermediate upright support.

Claim 15

In a stock rack of the type having spaced upright supports and a plurality of superposed trays each swingably mounted on the spaced upright supports for swinging movement about a horizontal axis adjacent the rear edge of the tray from a lower position through an arc of less than 180* to a raised position; the improvement wherein the truck has a pair of end upright supports adjacent opposite ends of the trays and at least one intermediate support intermediate the ends of the trays, each tray having a rolled rim of substantially circular cross-sectional configuration extending along the rear edge of the tray, at least said intermediate support having means defining a plurality of semicircular bearing surfaces at vertically spaced locations therealong each engaging the outer surface of the rolled rim on a respective one of the trays to swingably support the trays intermediate their ends on the intermediate upright support.

Claim 16

A stock rack according to claim 13 wherein said intermediate support has a flange section disposed in a plane transverse to said horizontal axis of the trays and generally U-shaped notches extending inwardly from the edge of the flange section, said means defining said semicylindrical bearing surfaces comprising inserts of bearing material disposed in notches in the flange sections of the intermediate upright and having said semicylindrical bearing surface at the inner side thereof.