Patents by Inventor Raymond R. Labelle

Raymond R. Labelle 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).

  • Ventilating unit for animal buildings
    Patent number: 4570532
    Abstract: A ventilating unit particularly suited for animal buildings. The unit comprises a housing with a central exhaust and an intake duct on each side. Flaps are provided for opening or closing the exhaust and intake ducts and partly or fully diverting exhaust air into the intake ducts. The unit, using a single fan, can change air in a building, circulate air in this building, or both change and circulate the air.
    Type: Grant
    Filed: June 28, 1984
    Date of Patent: February 18, 1986
    Inventor: Raymond R. Labelle