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US3575284A Expired / Lapsed US ⏱️ 0.0 years remaining

Posting trays

Assignee: Posting Equipment Corp
•
Filing: 1969-09-09
•
Granted: 1971-04-20
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Expires: 1989-09-09
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Abstract

Abstract A posting tray devised chiefly for portability and thus having a relatively small capacity of rectangular cards. The tray is of the type where both front and back plates are movable outwardly from a parallel carrying position to acute angular positions to provide a convenient access to the cards. Simultaneously with such movement, legs are automatically spread outwardly to provide a stable enlarged base to support the file against tipping during filing operations.

Inventors

  • 👤 Eric M Holt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 17:31
CPC Classifications
A; A47; A47B; A47B63/00

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 181 words
A posting tray comprising a rectangular base having vertical sides and depending ends consisting of spaced flanges, rectangular end plates each having a series of marginal slots adapted to receive the flanges of one end of said base, to provide a pivotal connection, a rail secured to the exterior of each end plate spaced from and in parallelism to the slots therein, each rail having a depending curved terminal flange spaced from the underlying plate and forming an open lineal pocket therewith, a substantially rectangular leg coextensive with each end of said base, each leg having a curved flange at its upper margin which flange is engaged within the adjoining pocket of an end plate, each leg having angular ends partially overlying the adjacent sides of said base, and a sliding connection between the angular end of each leg and the adjacent side of said base, said connection permitting angular movement of each leg from a vertical position to an acute angular position, said end plates being carried simultaneously for pivotal movement from vertical parallel positions to open acute angular positions.
Claim 2
Dependent Claim 181 words
A posting tray comprising a rectangular base having vertical sides and depending ends consisting of spaced flanges, rectangular end plates each having a series of marginal slots adapted to receive the flanges of one end of said base, to provide a pivotal connection, a rail secured to the exterior of each end plate spaced from and in parallelism to the slots therein, each rail having a depending curved terminal flange spaced from the underlying plate and forming an open lineal pocket therewith, a substantially rectangular leg coextensive with each end of said base, each leg having a curved flange at its upper margin which flange is engaged within the adjoining pocket of an end plate, each leg having angular ends partially overlying the adjacent sides of said base, and a sliding connection between the angular end of each leg and the adjacent side of said base, said connection permitting angular movement of each leg from a vertical position to an acute angular position, said end plates being carried simultaneously for pivotal movement from vertical parallel positions to open acute angular positions.
Claim 3
Dependent Claim 52 words
The invention as set forth in claim 1, wherein said sliding connection includes a pair of marginal vertical slots in each side of said base, and a shoulder stud secured to the upper corner of each end of said legs, said studs being received slidably in the vertical slots of said base.

References Cited (Backward Citations)

CA461419A Cited
US1647655A Cited
US2374965A Cited
US2463131A Cited
US2525405A Cited
DE885694C Cited
US2829651A Cited
US2854007A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-04-19 1974-10-19 1975-04-20 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-04-19 1978-10-19 1979-04-20 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-04-19 1982-10-19 1983-04-20 $7700.00 Window Closed / Lapsed

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