Mechanism for adjusting the height of a drum chair or the like c

Details Mechanism for adjusting the height of a drum chair or the like c Mechanism for adjusting the height of a drum chair or the like c

1997-02-03

1998-03-03

Cuomo, Peter M.

Supports

Stand

Standard type

2481884, 29734418, 29734422, 405110, F16M 1124, A47C 300

Patent

active

057226270

ABSTRACT:
A chair height adjusting mechanism including an externally threaded upper support supporting a chair seat, a tubular lower support into and out of which the upper support is movable. An internally threaded rotatable member rotatable up and down along the upper support. An upper gearing surface on the underside of the rotatable member. A fixed member around the upper support and through which the upper support is slidable. A tightening part for clamping the fixed member on the upper support. The fixed member having a lower gearing surface meshable with the gearing surface on the rotatable member so when they are in mesh, the rotatable member is held stationary. Support legs on the lower support and also connected with the tightening part.

REFERENCES:
patent: 3161396 (1964-12-01), Anderson
patent: 3203657 (1965-08-01), Thompson
patent: 3391893 (1968-07-01), Doerner
patent: 3406939 (1968-10-01), Doerner
patent: 4253632 (1981-03-01), Doerner
patent: 4655426 (1987-04-01), Von Dulong et al.
patent: 4828212 (1989-05-01), Dicks

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