Air lumbar support device

Details Air lumbar support device Air lumbar support device

1985-12-24

1987-01-06

Zugel, Francis K.

Chairs and seats

Bottom or back with means to alter contour

297DIG3, A47C 300

Patent

active

046341790

ABSTRACT:
An air lumbar support device utilized in an automobile seat for adjusting the curvature of a seat back by selectively regulating air pressures of a plurality of air bags accommodated in the seat back. The support device includes a pressure sensor detecting the air pressures of the seat bags, an input circuit supplying an electric signal from the pressure sensor to a control circuit, an output circuit receiving electric signal from the control circuit and causing an air control valve to actuate to thereby control the air pressures of the air bags, and a memory circuit memorizing and reading the electric signal supplied from the input circuit to the control circuit.

REFERENCES:
patent: 3983640 (1976-10-01), Cardullo et al.
patent: 4059909 (1977-11-01), Kron
patent: 4078842 (1978-03-01), Zur
patent: 4175297 (1979-11-01), Robbins et al.

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