Patents Assigned to Industrial Wire & Metal Forming, Inc.
  • Pulling apparatus and method
    Patent number: 4187708
    Abstract: A hand-tool housing a pneumatic and a hydraulic piston joined together with a common piston rod, and separated into an air chamber and a hydraulic chamber by a stationary divider through which the piston rod is sealed for free movement is used as a pulling device. Compressed air moves the puller to a starting position, and an air powered hydraulic unit supplies hydraulic pressure to effect the pulling cycle. Sequencing of the complete pulling cycle is controlled by a trigger actuated air valve mounted in the hand tool.
    Type: Grant
    Filed: April 11, 1977
    Date of Patent: February 12, 1980
    Assignee: Industrial Wire & Metal Forming, Inc.
    Inventor: Louis A. Champoux