Thermostatic device with fail-safe capability

Details Thermostatic device with fail-safe capability Thermostatic device with fail-safe capability

1983-01-17

1984-09-04

Tapolcai, William E.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236DIG2, 236100, 137 73, G05D 2312

Patent

active

044692757

ABSTRACT:
A device in a fluid flow path moves to perform a fluid flow control operation at a predetermined high fluid temperature. A mechanism normally locked out of participation in the movements of the device is released at a selected fluid temperature higher than the predetermined fluid temperature and compells the device to a performance of the control operation. The thermostatic device and the locking and release mechanism are incorporated in a unitary structure insuring the carrying out of a control function even when elements of the device having primary responsibility therefor fail or respond inadequately.

REFERENCES:
patent: 1952516 (1934-03-01), Sperry et al.
patent: 2425439 (1947-08-01), Puster
patent: 2690874 (1954-10-01), Stubblefield
patent: 3045918 (1962-07-01), Woods
patent: 3140721 (1964-07-01), Sullivan
patent: 3289686 (1966-12-01), Tyer, Jr.
patent: 3498537 (1970-03-01), Wong
patent: 4013218 (1977-03-01), King
patent: 4245782 (1981-01-01), Brown
patent: 4303197 (1981-12-01), Sandau

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