Automatic temperature and humidity regulation – Cooling radiator – Bypass
Patent
1988-03-18
1989-11-28
Tapolcai, William E.
Automatic temperature and humidity regulation
Cooling radiator
Bypass
137 73, 137 74, 236DIG5, 236 93A, F01P 702
Patent
active
048832251
ABSTRACT:
A fail-safe thermostat for vehicular cooling systems is positioned in a junction leading to an internal coolant passageway, a radiator passageway and a bypass passageway. An open housing seated in the junction supports a fixed central rod extending into the wax filled interior of a movable cylindrical member which controls the position of the interior segment of a main valve. Expansion of the wax forces the cylindrical member in a first direction against a compression spring. Fusible alloy is disposed in the coupling between the cylindrical member and the main valve, and melts at a specific temperature range in excess of the normal range. When this occurs the coupling is released in such a way that the spring forces the valve member to a second limit position opposite to the direction of expansion. A bypass closure member at one end of the cylindrical member may be used to close the bypass passageway concurrently with increased temperature.
REFERENCES:
patent: 1952516 (1934-03-01), Sperry et al.
patent: 3045918 (1962-07-01), Woods
patent: 3498537 (1970-03-01), Wong
patent: 4245782 (1981-01-01), Brown
patent: 4469275 (1984-09-01), DeSalve
patent: 4537346 (1985-08-01), Duprez
S.T.C., Inc.
Tapolcai William E.
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