Patents by Inventor Peter Piez

Peter Piez 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).

  • Internal gear pump
    Patent number: 5242286
    Abstract: An internal gear pump is disclosed having at least two essentially identical internal gears and a pinion meshing with the internal gears, all being rotatably disposed in a housing, the axial dimension of which is substantially equal to the width of the gear and pinion teeth. The housing includes a suction connection and a pressure connection. The internal gears have radial through-bores for the medium to be pumped. A support is provided at the contacting surfaces of the internal gears near the pressure connection.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: September 7, 1993
    Assignee: J. M. Voith GmbH
    Inventors: Franz Arbogast, Peter Piez