Deformation By Rolling Or Sliding Engagement Member Patents (Class 417/476)
  • Patent number: 3935885
    Abstract: A mechanism for feeding fluid into capsules in a capsule-filling machine embodying a cam-controlled roller movable into and out of squeezing relation to a flexible feed tube, and movable along the tube in a fluid-ejecting direction when disposed in such squeezing relation to the tube, with tube shut off means and ejector nozzle positioning means operable in timed relation to the actuation of the roller.
    Type: Grant
    Filed: February 1, 1974
    Date of Patent: February 3, 1976
    Inventor: Richard R. Alter
  • Patent number: 3930761
    Abstract: A peristaltic pump comprising a portable housing capable of being held in the hand and which carries means defining an elongated surface, a tube leading past the housing in contact with the elongated surface that includes near one end of the housing, a non-return valve that allows fluid to flow only in the direction that leads away from the housing, the tube being a flexible tube along at least that part of its length in contact with the elongated surface, a roller which is reciprocable along the flexible tube, means for squeezing the tube against the surface by the roller and thereby closing the tube and for moving the roller along the tube towards the non-return valve while thus squeezing the tube, means for continuously biasing the roller away from the non-return valve and means to withdraw the roller from said tube during or subsequent to its return to its initial position whereby the flexible tube returns substantially to its normal configuration.
    Type: Grant
    Filed: December 19, 1972
    Date of Patent: January 6, 1976
    Assignee: The Boots Company, Ltd.
    Inventor: Keith S. Barraclough