Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1978-01-30
1980-03-18
Schwadron, Martin P.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
137 72, 169 42, F16K 1738
Patent
active
041934164
ABSTRACT:
A thermal responsive valve including a valve body in which a member is movable between a first position and a second position but normally restrained from such movement by restraining means including a pair of pins held into contact with such member by means of a frame. The frame is of a generally closed planar configuration and includes a base portion to which a pair of spaced portions are interconnected by means of a pair of flexible rods. The spaced portions are in turn interconnected to each other by a link which is separable, such as by being fusible upon reaching a predetermined temperature level, or frangible in response to some form of external signal. The frame is positioned with respect to the valve body or a housing outwardly extending therefrom in such a manner that the pins are laterally held by the frame into contact with the movable member and block such member from moving to its second position by the action of a spring. As soon as the link separates, outward force upon the pin adjacent the spaced frame portions, forces such spaced portions outwardly from each other so as to permit the pins to move out of contact with the member and accordingly enable it to move to its second position.
REFERENCES:
patent: 306662 (1884-10-01), Stratton
patent: 2137685 (1938-11-01), Gillen
patent: 3587747 (1971-06-01), Romero et al.
patent: 3659624 (1972-05-01), Kelly et al.
patent: 3916930 (1975-11-01), Erickson
G. W. Dahl Company, Inc.
Gerard Richard
Schwadron Martin P.
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