Patents by Inventor Robert Frederick Dura Collin

Robert Frederick Dura Collin 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).

  • Window hinges
    Patent number: 3979791
    Abstract: A hinge for windows is provided which enables windows to be pivoted through 180.degree.. The hinge has a common pivot member associated with a friction brake the frictional resistance of which increases after a predetermined initial hinging movement to render operation of the window more manageable.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: September 14, 1976
    Assignee: Alcan Booth Industries Limited
    Inventor: Robert Frederick Dura Collin