Patents Assigned to K. D. Binnie Engineering Pty. Limited
  • Tube louvering machine
    Patent number: 4151769
    Abstract: An apparatus to simultaneously punch a series of louver holes in a tubular workpiece. The apparatus having a series of punches angularly spaced around the workpiece, which punches are caused to reciprocate by the engagement thereof by a series of inclined surfaces of a rotatable member located around the workpiece. The apparatus further includes gripping means to hold the workpiece during punching operations and to move the workpiece in between successive punching operations.
    Type: Grant
    Filed: September 30, 1977
    Date of Patent: May 1, 1979
    Assignee: K. D. Binnie Engineering Pty. Limited
    Inventor: Kevin D. Binnie