Upright and seating positioning device with particular applicati

Details Upright and seating positioning device with particular applicati Upright and seating positioning device with particular applicati

1989-04-11

1990-07-03

Aschenbrenner, Peter A.

Chairs and seats

Movable bottom

Movable independently of back

297DIG10, 248404, A47C 102

Patent

active

049385330

ABSTRACT:
The invention relates to an upright positioning structure with a pushing bar applying the upright positioning and pushing effort to the sub femoral area (3) and more particularly the ischial-femoral angle (3) of the user, pressing against the ischial projections of the user's pelvis and providing a resistance to forward sliding during the lifting up movement, the buttock and lumbar region of the user remaining outside of the pushing bar and unsupported.
This structure is particularly applied to armchairs or fixed or mobile seats.

REFERENCES:
patent: 2779949 (1957-02-01), Crispen
patent: 3158398 (1964-11-01), Stryker
patent: 4453766 (1984-06-01), DiVito
patent: 4552404 (1985-11-01), Congleton
patent: 4613187 (1986-09-01), Gordon
patent: 4637654 (1987-01-01), Boardman

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