A pumping system for the back support of a seat

Details A pumping system for the back support of a seat A pumping system for the back support of a seat

B - Operations, Transporting

60

N

155/2

B60N 2/44 (2006.01) A47C 7/46 (2006.01)

Patent

CA 2013655

A high pressure pumping system for power inflating and power bleeding the lumbar support of a vehicular seat including a high pressure air cell mounted in the back support, A two-position pneumatic switch serves to selectively alternately reverse a motor and pump to inflate the air cell to a predetermined capacity 5 or greater p.s.i., and to manually deflate the air cell through a bleed valve until the system pressure is lower than the sat pressure of a pressure cut-off switch whereupon the motor and pump pawer bleed the system.

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