Height adjustable counterbalance workstation

Details Height adjustable counterbalance workstation Height adjustable counterbalance workstation

1996-12-12

1998-01-13

Chen, Jose V.

Horizontally supported planar surfaces

Vertically adjustable

Shelf type

108146, 2481671, A47B 900

Patent

active

057067392

ABSTRACT:
A height adjustable workstation uses a torsion spring in association with a transmission for providing a counterbalance force opposing downward forces applied to the work surface. The workstation has telescoping legs and the telescopic movement thereof is transmitted through the transmission system to the torsion spring. The torsion spring is loaded and applies the counterbalance force to the legs via the transmission. The system includes a hand engaging adjustment mechanism for varying the magnitude of the counterbalance force and also includes a lock arrangement for locking the workstation at various selected positions. The preferred transmission system includes a rack and pinion gear arrangement connected to the torsion spring by a shaft.

REFERENCES:
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patent: 4747353 (1988-05-01), Watt
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patent: 5289782 (1994-03-01), Rizzi et al.
patent: 5400721 (1995-03-01), Greene
patent: 5408940 (1995-04-01), Winchell
patent: 5423502 (1995-06-01), Thomason et al.
patent: 5549053 (1996-08-01), Grout

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