Scissor-type valve

Details Scissor-type valve Scissor-type valve

1977-11-16

1980-05-13

Schwadron, Martin P.

Valves and valve actuation

Fluid actuated or retarded

With mechanical movement between actuator and valve

251212, 251279, F16K 31124

Patent

active

042025273

ABSTRACT:
A fluid control valve having a pair of blades arranged one above the other in superimposed relation for relative movement in parallel planes, each of said blades including means having a generally concave edge, and said concave edges when arranged in opposed overlapped relation cooperating with one another to define an opening whose size varies with the degree of overlap. Simultaneous movement of both blades is such that the edges of the openings therein move either toward or away from one another to vary the size of the opening without appreciably displacing the center thereof. A suitable reciprocating actuator serves as the means for simultaneously actuating both blades, one of said blades being directly connected thereto while the other is operatively associated with the blade so-connected by a rigid link.

REFERENCES:
patent: 1000304 (1911-08-01), Sliger
patent: 1343477 (1920-06-01), Roades
patent: 1590443 (1926-06-01), Robinson
patent: 1964663 (1934-06-01), Gossler
patent: 1986600 (1935-01-01), Pigott
patent: 1992552 (1935-02-01), Stover
patent: 2199085 (1940-04-01), Smith
patent: 2270433 (1942-01-01), Goffredo
patent: 2810394 (1957-10-01), Ferguson
patent: 3101736 (1963-08-01), Egger
patent: 3438316 (1969-04-01), Rodier
patent: 3787022 (1974-01-01), Wilcox

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