Dynamic chair

Details Dynamic chair Dynamic chair

2007-04-30

2008-10-14

Brown, Peter R. (Department: 3636)

Chairs and seats

Movable bottom

Tiltable

C297S314000

Reexamination Certificate

active

07434881

ABSTRACT:
A dynamic chair providing automatic motion in a seat. The chair has bottom, a support means disposed between the base and the seat bottom, a drive motor. A first drive wheel driven by the drive motor has a first mounting point offset from a first distance from the center of the first drive wheel; a second drive wheel driven by the first drive wheel, the second drive wheel having a different diameter from the diameter of the first drive wheel; and a crankshaft having a first crankshaft end and a second crankshaft end, the first crankshaft end connected to the second drive wheel and rotatably driven by the second drive wheel, the second crankshaft end having an eccentric providing a second offset mounting point offset from a second distance from the center of the second crankshaft end.

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patent: 6139095 (2000-10-01), Robertshaw
patent: 6644745 (2003-11-01), Rogers et al.
patent: 2002/0027384 (2002-03-01), Zur
patent: 2004/0035347 (2004-02-01), Grober

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