Valves and valve actuation – Mechanical movement actuator – Plural dissimilar mechanical movements
Patent
1977-04-25
1978-10-17
Schwadron, Martin P.
Valves and valve actuation
Mechanical movement actuator
Plural dissimilar mechanical movements
251228, 74 8915, F16K 3144, F16K 3150
Patent
active
041204832
ABSTRACT:
This invention is concerned with a stop valve of the type mounted along a fluid carrying pipe, which comprises a closing valve plate hinged about one fixed pin mounted on one internal side of a pipe and operating means for opening and closing the valve plate in the pipe. In accordance with the invention, the operating means consist in at least two articulated links forming an angle lower than 180.degree. therebetween, one of the extremities of said two links being mounted on the valve plate, the other extremity being mounted on the internal side of the pipe opposite to the side where is mounted the hinging pin of the closing valve, and control means extending from said internal side opposite to the side where the hinging pin is mounted to the articulation of the two links, for moving the latter and thus opening or closing the angle formed between the two links. The control means for moving the articulation of the two links preferably consist of a wheel external to the pipe, a shaft carrying a screw being operated by said wheel, said shaft being mounted on the wall of the pipe by a ball-and-socket joint so as to be fixed in translation but not in rotation, and a nut mounted in a movable manner on the screw portion of the shaft and fixed by a yoke to the articulation of the two links.
REFERENCES:
patent: 1561544 (1925-11-01), How
patent: 3043160 (1962-07-01), Killian
patent: 3510101 (1970-05-01), Burtis
Chambers A. Michael
Schwadron Martin P.
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