Temperature-responsive valve

Details Temperature-responsive valve Temperature-responsive valve

1978-11-30

1980-10-14

Makay, Albert J.

Automatic temperature and humidity regulation

Thermostatic

In fluid controlled

236101D, 251DIG3, G05D 2302

Patent

active

042276462

ABSTRACT:
A valve which opens and closes according to the temperature of the fluid passing through it has a fluid-controlling valve member consisting of a helix of a shape memory effect material having an elastic modulus which varies significantly with temperature in a reversible manner. At relatively low fluid temperature, the turns of the helix are closely compacted and obstruct the flow, while at relatively high fluid temperature, the turns are expanded and allow flow of fluid between them.

REFERENCES:
patent: 1608205 (1926-11-01), Francke
patent: 2362232 (1944-11-01), Anshicks
patent: 2371900 (1945-03-01), Livermont
patent: 3011512 (1961-12-01), Moen
patent: 3219272 (1965-11-01), Korte
patent: 3664582 (1972-05-01), Jackson et al.
patent: 3715894 (1973-02-01), Widdowson
patent: 3976280 (1976-08-01), Alexander et al.

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