Patents by Inventor J. David Rau

J. David Rau 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).

  • Fluid pressure device for opening clogged pipes
    Patent number: 5249311
    Abstract: Fluid pressure discharge device includes a handle, a fluid conduit in the handle, and a slidable fluid conduit tube movable relative to the fluid conduit for discharging a pressurized fluid near a clog in a clogged pipe. A pressurized gas for being discharged from the discharge end of the slidable fluid conduit can be supplied by a standard gas cartridge. An auxiliary handle is provided in another preferred embodiment for enhancing the manipulation of the fluid pressure discharge device, and for storing spare, unspent gas cartridges.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: October 5, 1993
    Inventor: J. David Rau