Proportional stroke automatic temperature control system

Details Proportional stroke automatic temperature control system Proportional stroke automatic temperature control system

1979-07-19

1981-09-29

Schwadron, Martin P.

Fluid handling

Pressure modulating relays or followers

With counter-balancing pressure feedback to the modulating...

1371165, 137DIG8, 1376275, F15B 500

Patent

active

042917174

ABSTRACT:
This invention relates to an automatic temperature control system for automobiles and improved components thereof. 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: 2505981 (1950-05-01), McLeod, Jr.
patent: 2588839 (1952-03-01), Horn
patent: 2879783 (1959-03-01), Taplin
patent: 3575190 (1971-04-01), Puster
patent: 3670757 (1972-06-01), Quain
patent: 3739797 (1973-06-01), Caldwell
patent: 3761050 (1973-09-01), Puster
patent: 4108372 (1978-08-01), Brakebill
patent: 4170971 (1979-10-01), Yamanuku et al.
patent: 4177830 (1979-12-01), Munson

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