Patents by Inventor William T. Gregory, Jr.

William T. Gregory, Jr. 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).

  • Greenhouse tubular insulation barrier
    Patent number: 4290242
    Abstract: A plurality of inflatable clear polyethylene tubes extending in spaced adjacent relationship longitudinally across a greenhouse at the eave level. A regulatable blower is arranged to deliver or evacuate air from a manifold which is in communication with each of the tubes. Operationally, the tubes are inflated to bear against each other and form a barrier for heat when sunlight is absent and are deflated to provide passages when sunlight is available.
    Type: Grant
    Filed: March 23, 1979
    Date of Patent: September 22, 1981
    Inventor: William T. Gregory, Jr.