Supports: racks – Tray – Terraced
Patent
1990-08-06
1991-10-08
Friedman, Carl D.
Supports: racks
Tray
Terraced
211194, A47B 4704
Patent
active
050546295
ABSTRACT:
An adjustable support riser for vertically stacking letter trays is disclosed, comprising a riser body (10) having a lower clothespin type attachment configuration (30, 32, 42) for securing to a lower letter tray, and an upper attachment socket (12) for attaching to a downwardly projecting (52) foot projection of an upper letter tray, whereby the upper and lower letter trays are in a spaced apart orientation. The upper attachment socket is provided with an elongate ovular shape of enlarged dimension, whereby the upper tray can selectively placed in either a forward or a rearward socket location relative to the upper end of the riser. The orientation of the upper letter tray relative to the lower letter tray can thereby be selectively altered from a parallel and co-aligned configuration to a staggered or stepped configuration. The lower attachment means of each riser is provided with offset cantilevered fingers (30, 32, 42), which distribute stress along the line of attachment to the lower letter tray. A reinforcement flange (40) is provided to extend along each cantilevered inward finger, whereby adding rigidity and strength to the lower attachment point.
REFERENCES:
patent: D188832 (1960-09-01), Staebell
patent: D261904 (1981-11-01), Polhemus
patent: 1352490 (1920-09-01), Wilkins
patent: 4074810 (1978-02-01), Juergens et al.
patent: 4785939 (1988-11-01), Huerto et al.
patent: 4907703 (1990-03-01), Alger et al.
Pp. 22, 23, 24 and 27, Eldon Office Products, P.O. Box 22667, Long Beach, California 90801-5667, Publication date Jan., 1990.
P. 9, Eldon Office Products, P.O. Box 22667, Long Beach, California, 90801-5667, Publication date unknown.
Pp. 4, 5 and 6, Rubbermaid Commercial Products Inc., 3124 Valley Ave., Winchester, Virgnia 22601, Publication date 1986.
Pp. 6 and 8, MacDonald Products Corp., 2685 Walden Ave., Buffalo, New York 14225, Publication date unknown.
Catalog Page, Park Sherman, a Division of Ketcham & McDougall Inc., 465 Eagle Rock Avenue, Roseland, New Jersey 07068, publication date unknown.
Berger Derek J.
Friedman Carl D.
O'Planick Richard B.
Rubbermaid Incorporated
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