Valves and valve actuation – Tube compressors – Perpendicularly reciprocating tube contacting element
Patent
1984-11-29
1986-06-24
Schwadron, Martin P.
Valves and valve actuation
Tube compressors
Perpendicularly reciprocating tube contacting element
251 8, 25112911, F16L 5514
Patent
active
045963746
ABSTRACT:
An occluder valve for closing off the flow of fluid in a flexible plastic tube includes a linearly movable pinch member coupled to a rotatable shaft through a nut. The shaft is coupled to an electric motor through an electrically energizable clutch. The output shaft of the motor is mechanically constrained to rotate in only one direction. The motor, coupled through the clutch, rotates the shaft causing the pinch member to move linearly away from the tubing. A torsion spring opposes this rotation. Once opened the valve will stay opened as long as the clutch is energized as the shaft of the motor will not rotate in a closing direction. To close the valve, the clutch is deenergized and the torsion spring moves the pinch member linearly against the flexible tubing closing it off.
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Bergemann David M.
Thompson John U.
Baxter Travenol Laboratories Inc.
Flattery Paul C.
Novack Sheri M.
Pierce Kay H.
Schwadron Martin P.
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