Valve apparatus with improved means to prevent cross-venting

Details Valve apparatus with improved means to prevent cross-venting Valve apparatus with improved means to prevent cross-venting

1982-05-14

1984-08-21

Wayner, William E.

Fluid handling

Systems

Multi-way valve unit

13762519, 13762521, E03B 300

Patent

active

044664605

ABSTRACT:
This invention relates to improved components for an automatic temperature control system for automobiles. The control system operates on the proportional stroke principle and comprises an in-car air sensing tube biased with ambient air; a sensor in an aspirator at the end of the tube; a moving pivot operated directly by the output of the sensor; and a feedback valve operated by the moving pivot for driving a vacuum-assist motor, the output stroke of which operates the various electrical and vacuum functions of the heater-air conditioning system.

REFERENCES:
patent: 3033226 (1962-05-01), Allen
patent: 3074431 (1963-01-01), Schwartz et al.
patent: 3237644 (1966-03-01), Beck et al.

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