Valves and valve actuation – Tube compressors – Fluid pressure actuated
Patent
1976-12-29
1979-01-02
Schwadron, Martin P.
Valves and valve actuation
Tube compressors
Fluid pressure actuated
138109, 138125, 138138, 138153, 138174, 285 55, F16K 707
Patent
active
041323823
ABSTRACT:
An open ended sleeve for a pinch valve is disclosed. The sleeve has a resilient tubular body member with an elastomeric liner forming a smooth tubular inner wall. A number of circumferential fabric layers surround the liner and are bonded thereto extending along the full length of the body member, a gum layer surrounds the fabric layer and a mounting flange is provided at each end of the body member, each mounting flange has a rigid annular ring therein having a cross section with rounded corners, the ring having an end face perpendicular to the longitudinal axis of the body and a sloped outer face tapered inward from the end of the sleeve. Fabric layers extend around and are bonded to only the outer face and end face of the ring, thus separation between the fabric layers and the ring does not occur when the sleeve collapses.
REFERENCES:
patent: 1883086 (1932-10-01), Swartz
patent: 2146218 (1939-02-01), Kimmich et al.
patent: 2359952 (1944-10-01), Welger
patent: 2911236 (1959-11-01), Thibault
patent: 3724807 (1973-04-01), Jackson
patent: 3899006 (1975-08-01), Champleboux et al.
patent: 3920049 (1975-11-01), Lippert et al.
Gerard Richard
Schwadron Martin P.
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