Patents by Inventor Robert A. Cottingham

Robert A. Cottingham 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).

  • Bar stock guides tubes for metal working machines and sound-damping liners for such tubes
    Patent number: 4131964
    Abstract: Sound-damping liners for bar stock guide tubes and the like for use in automatic metal working machines, said liners being produced from ultra high molecular weight polyethylene; means insulating the outer periphery of the liner from the inner surface of the guide tube; and means for retaining the liner within the guide tube.
    Type: Grant
    Filed: February 11, 1977
    Date of Patent: January 2, 1979
    Assignee: The Polymer Corporation
    Inventor: Robert A. Cottingham