Patents by Inventor Michael V. Liebing

Michael V. Liebing has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rotational elevator rope cleaning device
    Patent number: 5036563
    Abstract: Elevator hoist ropes are continuously cleaned by a rotatable generally cylindrical wire brush assembly mounted in the machine room or hoistway along the path of travel of the hoist ropes. The axis of rotation of the wire brush is skewed to the direction of movement of the hoist ropes so as to cause the brush bristles to enter the rope strand valleys whereby grease and other materials are cleaned out of the inter-strand valleys on the rope.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: August 6, 1991
    Assignee: Otis Elevator Company
    Inventor: Michael V. Liebing