Adjustable height load bearing support structure

Details Adjustable height load bearing support structure Adjustable height load bearing support structure

1996-10-11

1998-07-14

Chen, Jose V.

Horizontally supported planar surfaces

Vertically adjustable

Shelf type

248588, A47B 900

Patent

active

057788030

ABSTRACT:
A counterbalanced adjustable height load bearing support structure comprises a spring biased arm having a cam surface thereon cooperates with a follower of a vertically movable support assembly supporting a load bearing surface. The cam surface in preferred form is generally concave upwardly and has a profile defined by the expressions

REFERENCES:
patent: 318593 (1885-05-01), Behrens
patent: 3282566 (1966-11-01), Clarke
patent: 4312491 (1982-01-01), Aondetto
patent: 4511110 (1985-04-01), Moller
patent: 4551300 (1985-11-01), Feutrel
patent: 4638610 (1987-01-01), Heikkinen
patent: 4685731 (1987-08-01), Migut
patent: 4718355 (1988-01-01), Houghton
patent: 4747353 (1988-05-01), Watt
patent: 5285992 (1994-02-01), Brown

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