Thermostat

Details Thermostat Thermostat

1981-02-26

1982-10-12

Tapolcai, William E.

Automatic temperature and humidity regulation

Cooling radiator

Bypass

137 73, 137 74, F01P 702

Patent

active

043535003

ABSTRACT:
A thermostat for a cooling system for an automobile engine or the like, comprising an iris diaphragm gate valve member operated by a bimetallic helical operating member to closely control flow of the cooling liquid and engine temperature to effect fuel savings. The thermostat is provided with auxiliary flow openings having fusible plugs therein which are fusible at different predetermined temperatures to more closely control engine temperature and to allow the flow of cooling liquid through the thermostat in the event of failure of the thermostat mechanism.

REFERENCES:
patent: 1740422 (1929-12-01), Snow
patent: 1747413 (1930-02-01), Aseltine
patent: 1806530 (1931-05-01), Giesler
patent: 2177937 (1939-10-01), Goldschmidt
patent: 2649272 (1953-08-01), Barbato
patent: 2830617 (1958-04-01), Brown
patent: 2960270 (1960-11-01), Long, Jr.
patent: 2969142 (1961-01-01), Mack
patent: 3227144 (1966-01-01), Sigl

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