Valves and valve actuation – Tube compressors
Patent
1993-07-16
1994-03-29
Fox, John C.
Valves and valve actuation
Tube compressors
251 9, 138141, F16K 700
Patent
active
052977730
ABSTRACT:
A plastic valve comprising a valve body, integral plastic valving duct means with rigid tubular plastic end portions for attachment to flow ducts carrying liquids to be valved, and a collapsible and distensible tubular plastic valving portion welded to the tubular end portions, the valving portion have sidewalls of plastic film laminae free of each other, but welded to each other at edges to form resilient side rib portions, squeezing linkages traversing flexible wall portions and applying squeezing pressure onto the flexible wall portions to close the flow passage therebetween, tiltable squeeze bars extending along the flexible wall adjacent the squeezing linkages and progressively deforming the flexible wall portions during application of squeezing pressure, camming impeller portions applying and relieving squeezing pressure against the squeezing linkages and squeeze bars and camming against the camming surfaces of the body portion as a driving head moves the impeller portions in the valve body portion.
REFERENCES:
patent: 2622837 (1952-12-01), Goodman
patent: 4478661 (1984-10-01), Lewis
patent: 4523738 (1985-06-01), Roftis et al.
patent: 4929293 (1990-05-01), Osgar
Crane Co., Resistoflex, TFE Clamp Valve, 1986, pp. 1-14.
Chinnock Robert T.
Collins Timothy R.
Hamilton Dean T.
Fluoroware, Inc.
Fox John C.
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