Motors: expansible chamber type – Plural relatively movable or rigidly interconnected working... – With means to control the working fluid to one working...
Patent
1985-04-15
1987-01-06
Hershkovitz, Abraham
Motors: expansible chamber type
Plural relatively movable or rigidly interconnected working...
With means to control the working fluid to one working...
91469, 137883, 200 83Q, 60911, F15B 1100
Patent
active
046337636
ABSTRACT:
A switch and valve assembly for inflating or deflating a pair of bladders mounted in the back and seat regions of a vehicle seat. The assembly houses two normally-closed valve assemblies and two normally-open electrical switch assemblies, with two pushbutton-actuated stems adapted to selectively either partially open the valve assemblies by partial depression of the pushbuttons to thereby bleed-off fluid under pressure from respective bladders, or to fully open the valve assemblies while closing the switch assemblies by full depression of the pushbuttons to thereby actuate the pump to provide fluid under pressure to fill the respective bladders as desired for operator riding comfort or support. Pressures in the two bladders may be changed individually or concurrently.
REFERENCES:
patent: 4330007 (1982-05-01), Leskovec
patent: 4498500 (1985-02-01), Miller
Heling Dennis H.
Manning Steven F.
Perkins Jimmie G.
Ex-Cell-O Corporation
Hershkovitz Abraham
Moran John P.
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