Vehicle seat which is adjustable in height and with automatic we

Details Vehicle seat which is adjustable in height and with automatic we Vehicle seat which is adjustable in height and with automatic we

1990-10-12

1991-10-22

Ramirez, Ramon O.

Supports

Resilient support

Including load sustaining bearing or guide

267 6419, 2484062, 248421, 248631, F16M 1300

Patent

active

050588524

ABSTRACT:
A vehicle seat which is adjustable in height and which affords automatic adjustment to the seat occupant weight comprises a gas spring between a seat frame and a base frame, a valve arrangement actuable by an actuating element to adjust the pressure in the gas spring in dependence on the weight of the seat occupant, and a means for setting the desired seat height. Disposed between the seat and base frames is a belt reel device with a coupling means, which like the gas spring, can be subjected to the action of pressure gas from a pressure source. The pressure source comprises a compressor driven by a drive motor, which are disposed on the vehicle seat. The valve arrangement includes a 2/2-way valve which serves only for the release of pressure gas from the gas spring, and a 3/2-way valve between the pressure source and the coupling means of the belt reel device. The valve arrangement may be mechanical/pneumatic in operation or may be controlled by an electronic control arrangement.

REFERENCES:
patent: 4213594 (1980-07-01), Pietsch et al.
patent: 4382573 (1983-05-01), Aondetto
patent: 4461444 (1984-07-01), Grassl et al.
patent: 4573657 (1986-03-01), Sakamoto
patent: 4638982 (1987-01-01), Misher et al.
patent: 4645169 (1987-02-01), Mischer
patent: 4659052 (1987-04-01), Nagata
patent: 4684100 (1987-08-01), Grassl
patent: 4729539 (1988-03-01), Nagata
patent: 4733847 (1988-03-01), Grassl
patent: 4941641 (1990-07-01), Granzow et al.

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