Patents by Inventor John H. Brandon

John H. Brandon 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).

  • Duct cleaning apparatus
    Patent number: 3994310
    Abstract: An apparatus for cleaning debris from ducts. The apparatus has a pair of rotatable jets with one of the jets having a zero orifice and the other jet having a spread orifice. A means supports the jets and fluid is supplied to them. Fluid leaving the jet having the zero orifice impinges the debris and cuts it from the duct and fluid leaving the other jet having the spread orifice produces a flushing action removing the debris after it has been cut from the duct.
    Type: Grant
    Filed: November 11, 1975
    Date of Patent: November 30, 1976
    Inventor: John H. Brandon