Patents by Inventor Thomas C. Hughes

Thomas C. Hughes 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).

  • Method of bonding roof tiles to roof substrate utilizing urethane foam
    Patent number: 5362342
    Abstract: A method of bonding a roof tile to a roof substrate utilizing a two component polyurethane foam. The method includes the step of applying under low pressure a stream of a two component foamable liquid polyurethane on a roof substrate. Preferably, the foamable liquid polyurethane has a density in the range of about one and one-half to about two pounds per cubic foot and a reactivity period in the range of about one and one-half to about four minutes. Preferably, the foamable liquid polyurethane is applied at a rate of about two to about three pounds per minute. The roof tile is placed into contact with the foamable liquid polyurethane during the reactivity period of the foamable liquid polyurethane.
    Type: Grant
    Filed: May 3, 1993
    Date of Patent: November 8, 1994
    Assignee: Polyfoam Products, Inc.
    Inventors: Pat L. Murray, E. Richard Huber, Thomas C. Hughes