Patents Assigned to Envair, Inc.
  • Patent number: 4130224
    Abstract: A viscous liquid dispenser is characterized by a yieldable lever arm pivotally connected within a casing. The lever arm carries a rigid dispensing block thereon. In response to the imposition of an actuating force to the lever arm, the arm pivots to bring the tip of the dispensing block into contact with a resilient flexible tube extending from a viscous liquid reservoir. The resilient tube is constricted between the tip of the dispensing block and a predetermined impact point located on a movable back-up block provided adjacent to the resilient tube and opposite from the dispensing block. The lever arm yieldably responds to the continued application of an actuating force to compress a portion of the resilient tube immediately below the constriction between the dispensing block and a predetermined dispensing surface disposed on the back-up block.
    Type: Grant
    Filed: October 8, 1976
    Date of Patent: December 19, 1978
    Assignee: Envair, Inc.
    Inventors: Richard O. Norman, John R. Frassanito