Patents Assigned to M. Bilt Enterprises, Inc.
  • Motor-operated sliding door assembly
    Patent number: 4754572
    Abstract: A motorized drive unit for a horizontally sliding door section comprising a unitary housing assembly holding a drive motor and a floor-engaging wheel driven from the motor. A vertical lead screw fixedly positioned vertically on this housing assembly threadedly engages a nut fixedly positioned on the door section, so that the wheel can be raised from engagement with the floor. The housing assembly is slidable vertically on a support plate attached to the door section. A support member for the nut is attached to the same support plate.
    Type: Grant
    Filed: March 18, 1987
    Date of Patent: July 5, 1988
    Assignee: M. Bilt Enterprises, Inc.
    Inventor: Michael M. Bilt