Patents by Inventor Walter V. Penkov

Walter V. Penkov 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).

  • Panel operating mechanism
    Patent number: 3934370
    Abstract: A panel in the form of a movable window frame hinged along its upper edge is swung from a closed position to an open position by a mechanism which includes a torque rod and crank-operated self-locking gearing to actuate the torque rod. A vibration damper in the form of a friction pad or brake shoe that engages the torque rod at a distance from the gearing, prevents chattering of the window when it is being swung towards its closed position and also resists any tendency for wind or vibration to oscillate the window.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: January 27, 1976
    Assignee: Hehr International Inc.
    Inventors: Gerald A. Kwan, Walter V. Penkov, Norman E. Roe