Air-controlled lumbar support device

Details Air-controlled lumbar support device Air-controlled lumbar support device

1987-01-20

1989-02-28

Dorner, Kenneth J.

Chairs and seats

Bottom or back with means to alter contour

297DIG3, 137115, A47C 746

Patent

active

048079316

ABSTRACT:
An air-controlled lumbar support apparatus for a vehicle seat having a base member and a backrest is provided and includes an inflatable chamber, a valve mechanism, and a pneumatic tube. The inflatable chamber is mounted within the backrest and includes at least one partition disposed across a substantial portion of the at least one inflatable chamber. The valve mechanism receives and discharges a flow of pressurized fluid. The pneumatic tube interconnects the valve mechanism and the inflatable chamber for transferring the flow of pressurized fluid. A pump is attached to the valve mechanism for injecting fluid through the valve mechanism and the pneumatic tube to inflate the inflatable chamber. A switching mechanism allows for the release of fluid out of the valve mechanism, thereby deflating the inflatable chamber, as desired.

REFERENCES:
patent: 2731652 (1956-01-01), Bishop
patent: 2826767 (1958-03-01), Edwards
patent: 4016895 (1977-04-01), Budecker
patent: 4491364 (1985-01-01), Hattori et al.
patent: 4491629 (1984-04-01), Mackal
patent: 4516788 (1985-05-01), Umetsu et al.
patent: 4570676 (1986-02-01), Nishio et al.

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