Valves and valve actuation – Tube compressors – Fluid pressure actuated
Patent
1990-05-14
1991-06-25
Walton, George L.
Valves and valve actuation
Tube compressors
Fluid pressure actuated
251 9, 251 58, 251 61, 604250, F16K 707, F16K 31126, F16L 5514
Patent
active
050260200
ABSTRACT:
A miniature compound lever fluid-operated pinch valve/regulator in which a swell tube is sandwiched between a rectilinearly movable planar member and a frame, and in which the swell tube responds to pressurized fluid to displace the planar member from the frame. A spring-biased lever engages the planar member to collapse the swell tube in the absence of the pressurized fluid. A pinch lever is also mounted in the frame and is engaged by the spring-biased lever. The result is a compound lever mechanism which responds to the swelling and collapse of the swell tube in response to a pressurized fluid introduced into the swell tube to cause the mechanism to perform a pinching function on a resilient fluid-carrying tube passing through the valve/regulator.
REFERENCES:
patent: 1284465 (1918-11-01), Ryan
patent: 2483954 (1949-10-01), Weiss
patent: 2517820 (1950-08-01), Aagaard
patent: 2582917 (1952-01-01), Aagaard
patent: 2588212 (1952-03-01), Custer
patent: 2734526 (1956-02-01), Aagaard
patent: 3399693 (1968-09-01), Toma
patent: 3468342 (1969-09-01), Craft
patent: 3675656 (1972-07-01), Hakim
patent: 4071039 (1978-01-01), Goof
patent: 4372345 (1983-02-01), Mehus
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