Valves and valve actuation – With means to increase head and seat contact pressure – Spring
Patent
1983-01-03
1984-05-15
Cohan, Alan
Valves and valve actuation
With means to increase head and seat contact pressure
Spring
137353, 13762548, 137DIG3, 200 6186, F16K 2500
Patent
active
044483902
ABSTRACT:
A vacuum control valve comprising a body having a valve surface with a plurality of valve ports extending through the body from such surface, a soft resilient valve member having a control surface slidable along the valve surface and formed with passage means for selectively establishing communication with the valve ports, a movable carriage for receiving and supporting the valve member, and means for moving the carriage along a path substantially parallel with the valve surface, the soft resilient valve member having a soft resilient compressible rear portion formed integrally with such valve member on the opposite side thereof from the control surface, the valve member being confined between the carriage and the valve surface with such soft resilient compressible rear portion in a compressed condition for exerting resilient pressure between the control surface of the valve member and the valve surface of the body, the soft resilient compressible rear portion comprising a pattern of fins alternating with recesses on the valve member, such fins engaging the carriage.
REFERENCES:
patent: 2270838 (1942-01-01), Langdon
patent: 3561475 (1971-02-01), Rockwell
patent: 3637961 (1972-01-01), Fiddler et al.
patent: 4126153 (1978-11-01), Raab
Black III Charles E.
Halstead Raymond T.
Cohan Alan
Indak Manufacturing Corp.
Rivell John A.
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