Shelf assembly having infinitely vertically adjustable top surfa

Details Shelf assembly having infinitely vertically adjustable top surfa Shelf assembly having infinitely vertically adjustable top surfa

1990-06-21

1991-04-16

Picard, Leo P.

Electricity: electrical systems and devices

Miscellaneous

211 41, H05K 714

Patent

active

050087797

ABSTRACT:
A shelf assembly having an infinitely vertically adjustable top surface is provided for supporting electronic circuit boards in a storage cabinet. The shelf assembly includes a shelf base having a bottom support surface and a front and rear wall wherein the front wall defines at least one horizontallly extending elongate slot therein. A vertical adjustment tray is positioned on the support surface of the shelf base and includes a front wall and rear wall which each define at least one elongate slot therein which extends generally laterally upwardly. Vertical adjustment knob elements are secured to the front wall of the vertical adjustment tray and extend through the elongate slot in the front wall of the shelf base so that lateral movement of the knob member will laterally translate the vertical adjustment tray relative to the shelf base. A shelf top is positioned on the vertical adjustment tray and movably secured relative to the shelf base so as to prevent lateral movement thereof while allowing vertical movement relative to the shelf base. The shelf top also has front and rear walls with slot engagement pegs extending inwardly therefrom and into operative engagement with at least one upwardly extending slot in each of the front and rear walls of the vertical adjustment tray whereby lateral movement of the knob elements of the shelf assembly causes the vertical adjustment tray to laterally translate relative to the shelf base and the shelf top to be vertically actuated by the lateral movement thereof.

REFERENCES:
patent: D288160 (1987-02-01), Maroney et al.
patent: 4277120 (1981-07-01), Drake et al.
patent: 4563722 (1986-01-01), Maroney et al.
patent: 4638399 (1987-01-01), Maroney et al.
patent: 4720048 (1988-01-01), Maroney et al.

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