Fluid flow selector valve for vehicle environmental control syst

Details Fluid flow selector valve for vehicle environmental control syst Fluid flow selector valve for vehicle environmental control syst

1984-10-23

1986-04-08

Rosenthal, Arnold

Valves and valve actuation

Fluid actuated or retarded

Pilot or servo type motor

13762521, 13762548, 91357, 91368, F16K 31143, F15B 910

Patent

active

045807582

ABSTRACT:
A fluid flow selector valve for controlling step-by-step displacement of an on/off actuator (12), e.g. for controlling a flap in an installation for heating or for air conditioning the cabin of a motor vehicle. The valve comprises two mutually movable elements (80, 84) defining at least two chambers (90, 92) therebetween suitable for connecting the actuator feed inlet (30) to a source of fluid pressure (72) or to an exhaust. The valve further comprising an intermediate chamber (94) suitable for connecting the feed inlet to the source of fluid pressure (72), to the exhaust, or to an air tight seal.

REFERENCES:
patent: 3072108 (1963-01-01), Cripe
patent: 3125001 (1964-03-01), Cripe
patent: 3187640 (1965-06-01), Young et al.
patent: 3731729 (1973-05-01), Beatenbough et al.
Patent Abstract, Japan, 55-110617, Nov. 11, 1980, Nippon Denso K.K., vol. 4, No. 161.

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