Thermostat for two-system cooling device

Details Thermostat for two-system cooling device Thermostat for two-system cooling device

2007-02-06

2007-02-06

Jiang, Chen Wen (Department: 3744)

Automatic temperature and humidity regulation

Thermostatic

Expanding solid

C236S10100B, C236S034000, C236S034500, C123S041090, C123S041080

Reexamination Certificate

active

10494047

ABSTRACT:
A thermostat independently controlling cooling water passages of two circuits, including a first valve body having first and second passages in constant communication. A third passage is selectively connected to those passages. Communication of the third passage is disconnected when the cooling water temperature is below a prescribed temperature, and the valve is opened when the cooling water temperature is equal to or higher than the prescribed temperature. A second valve body, having fourth and fifth passages selectively in communication, closes the valve to disconnect those passages when the cooling water temperature is below the prescribed temperature, and opens the valve by operating the first valve body to link the passages when the cooling water temperature is equal to or higher than the prescribed temperature. A tubular sleeve prevents first and second control chambers, respectively including the first and second valve bodies, from communicating with each other.

REFERENCES:
patent: 4205784 (1980-06-01), Monigold
patent: 4621594 (1986-11-01), Kubis
patent: 56-29017 (1981-03-01), None
patent: 57-97014 (1982-06-01), None
patent: 139769/1982 (1982-09-01), None
patent: 174869/1982 (1982-11-01), None
patent: 3071546 (2000-05-01), None

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