Air suspension device for vehicle seat

Details Air suspension device for vehicle seat Air suspension device for vehicle seat

1989-08-29

1990-08-07

Reger, Duane A.

Spring devices

Seat support

248564, 297348, F16F 500, B60N 252

Patent

active

049461451

ABSTRACT:
An air suspension device for a vehicle seat which is capable of automatic adjustment of the height of the seat at a given neutral position. In the device, an air spring is adjusted in flow of air thereinto or therefrom via a directional control valve which is actuated responsive to the vertical movements of link members, so as to adjust the height of the seat. A play is provided in the interlocking relation between the control valve and link members to avoid unnecessary actuation of the valve. Further, a manual control valve is disposed between an air source and the air spring, with a check or shuttle valve provided therein, thereby forming a direct air exhaust circuit, whereby operating the manual valve effects a rapid exhaust of air from the air spring, not via the directional control valve.

REFERENCES:
patent: 3632077 (1972-01-01), Hall et al.
patent: 3638897 (1972-02-01), Harder, Jr. et al.
patent: 4678155 (1987-07-01), Carter
patent: 4822094 (1989-04-01), Oldfather et al.

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