Seats

Details Seats Seats

1983-06-22

1986-02-25

Foss, J. Franklin

Supports

Stand

Tilting support surface

297325, A45D 1904

Patent

active

045724687

ABSTRACT:
A seat includes a device for adjusting the position of a seat part relative o its support. The device is operated by a rotary knob which rotates a pinned disc of a lantern wheel gearing arrangement. The pins of the disc cooperate with teeth of a gear wheel which is connected to a pinion that rolls on a toothed segment articulated to the seat support. The teeth of the gear wheel are constructed so that reaction forces due to contact between the flanks and the pins are directed so as to pass through the rotational axis of the disc. Therefore no torque is applied to the disc and it remains stable.

REFERENCES:
patent: 442404 (1890-12-01), Steiger
patent: 2161367 (1939-06-01), McGregor et al.
patent: 4190225 (1980-02-01), Bauer et al.
patent: 4325527 (1982-04-01), Berneking
patent: 4406497 (1983-09-01), Kluting
patent: 4487390 (1984-12-01), Miyashita

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