Seat assembly with inflatable bladder having a single non-revers

Details Seat assembly with inflatable bladder having a single non-revers Seat assembly with inflatable bladder having a single non-revers

1989-04-27

1990-07-03

Michalsky, Gerald A.

Chairs and seats

Bottom or back with means to alter contour

297DIG3, A47C 746

Patent

active

049385283

ABSTRACT:
A seat assembly with an inflatable bladder for adjustable seat support having an air delivery system for both inflating and deflating the bladder. The air delivery system includes a single, one-directional pump and valve means selectively operable to communicate the pump outlet with the bladder and the pump inlet with atmosphere for inflating the bladder and selectively operable to communicate the pump inlet with the bladder and the pump outlet with atmosphere to deflate the bladder.

REFERENCES:
patent: 3608961 (1971-09-01), Von Heck
patent: 3867732 (1975-02-01), Morrell
patent: 4840425 (1989-06-01), Noble

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