Patents by Inventor Thomas J. Bechtel

Thomas J. Bechtel 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).

  • Roof construction system holding roof membranes in place by suction forces
    Patent number: 4409761
    Abstract: A roof construction system wherein loosely-laid membranes on the top of a roof are held in place on the roof by suction forces when the wind blows, the suction forces varying directly in proportion to the wind velocity which would otherwise tend to lift the membrane so that frontal pressure and drag could dislodge or damage the roofing.
    Type: Grant
    Filed: April 3, 1981
    Date of Patent: October 18, 1983
    Inventor: Thomas J. Bechtel