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.

Abstract: A slip-lock type take-up reel for roll film has drive and driven flanges provided with axial cores that allow limited relative rotary movement of the flanges between a slip position where the cores are radially spaced to receive or release a film end and a lock position where the film end is gripped in interference fit between the cores.