Air pumping system for an automotive seat

Chairs and seats – Bottom or back with means to alter contour – Providing support for lower back region

Patent

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Details

297DIG3, A47C 454

Patent

active

058936092

ABSTRACT:
An inflatable lumbar support system for a vehicle seat includes an inflatable air cell, or cells, coupled by an air line to a motorized diaphragm pump. The outlet valve of the pump is in the form of an umbrella valve which serves not only to seal the pump on the intake strokes, but is of such character to provide the sole seal between the air cell and pump, thereby eliminating the need to have a separate external check valve between the pump and air cell to assure that the air cell does not leak once pressurized.

REFERENCES:
patent: 4167200 (1979-09-01), Bouteille
patent: 4792186 (1988-12-01), Benjamin et al.
patent: 5152579 (1992-10-01), Bishai

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