Supporting framework for a swivel chair or swivel table

Details Supporting framework for a swivel chair or swivel table Supporting framework for a swivel chair or swivel table

2007-05-15

2007-05-15

Friedman, Carl D. (Department: 3632)

Supports

Stand

Horizontally movable support surface

C248S418000, C248S423000, C248S349100

Reexamination Certificate

active

10907170

ABSTRACT:
A supporting framework for a swivel chair or table includes a gas spring and a cylinder put on the gas spring. The cylinder includes two opposite holes and a plurality of equally circumferentially spaced longitudinal apertures. Spring loaded posts and lock bars are located in the apertures. A fastening ring rests upon the cylinder and includes a plurality of equally circumferentially spaced openings having a diameter less than a diameter of the posts but slightly larger than a diameter of the lock bars. A hollow cap with the gas spring projected therethrough includes two opposite channels of an inverted L-shape. Two, lock pins are inserted through the channels and the holes for fastening the cap and the cylinder together. Moving the lock pins from upper second positions to lower first positions in the channels will enable the gas spring to rotate or vice versa will lock the same.

REFERENCES:
patent: 1629939 (1927-05-01), Turner
patent: 2377002 (1945-05-01), Greenwood
patent: 3230908 (1966-01-01), Grant
patent: 3845926 (1974-11-01), Wahls
patent: 3910633 (1975-10-01), Marsh
patent: 5297849 (1994-03-01), Chancellor
patent: 5884976 (1999-03-01), Breen et al.
patent: 6076891 (2000-06-01), Bernhardt
patent: 6182583 (2001-02-01), Larson
patent: 2001/0032916 (2001-10-01), Wess et al.
patent: 2003/0127857 (2003-07-01), Boyd et al.

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