Fluid handling – Destructible or deformable element controlled – Heat destructible or fusible
Patent
1993-09-02
1994-09-06
Schwadron, Martin P.
Fluid handling
Destructible or deformable element controlled
Heat destructible or fusible
251 74, F16K 1738
Patent
active
053438841
ABSTRACT:
A self-closing actuator mechanism and a gate valve system equipped with the actuator mechanism, in which a coil spring acts on a gate valve actuating arm only in a closing direction, the coil spring being held in a compressed condition by retaining clips that are connected by a spring under tension and which carry a meltable link material on them between each clip and a holding sleeve. The clips release automatically, under the tensioning of their connecting spring, when either the holding sleeve is retracted or the link material melts. The gate valve system is designed to meet all regulations pertaining to the transportation of hazardous cargoes, while being low in cost and able to be retrofit installed on existing tank gate valves in a simple and easy manner.
REFERENCES:
patent: 998507 (1911-07-01), Hasty
patent: 1026262 (1912-05-01), Hasty
patent: 3165236 (1965-01-01), Beazer et al.
patent: 4004601 (1977-01-01), Bachelder et al.
patent: 4099551 (1978-07-01), Billington et al.
patent: 5004003 (1991-04-01), Gray, Jr.
patent: 5067510 (1991-11-01), Breaux et al.
Brochure of CFI Valve Specialties On Light Weight Gate Valves, publication date unknown.
Gibbs Wayne
Henderson Tom
Lee Kevin L.
Schwadron Martin P.
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