Patents by Inventor John D. McMahan

John D. McMahan 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).

  • Insulated roof structure
    Patent number: 4333291
    Abstract: The roof structure (10) comprises spaced parallel I-beams (12), spaced parallel generally Z-shaped purlins (14) extending transversely of and supported by the I-beams (12), insulation support members (16) hung on the purlins (14), fibrous glass boards (24) with facing (25) supported by the insulation support members (16) beneath the purlins (14), fibrous glass batts (26) covering the boards (24) between the purlins (14), and roof panels (28) secured to the purlins (14) and covering the batts (26), each insulation support member (16) comprising an elongated board-edge sealing member (20) supported respectively adjacent opposite ends by a pair of hangers (18) hung on a purlin (14) and each having a pair of guide and support arms (22) respectively extending oppositely therefrom transversely of the board-edge sealing member (20).
    Type: Grant
    Filed: July 28, 1980
    Date of Patent: June 8, 1982
    Assignee: Owens-Corning Fiberglas Corporation
    Inventors: Dwight S. Musgrave, John D. McMahan, Robert L. Downing