Patents by Inventor Fred M. Siptrott

Fred M. Siptrott 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).

  • Unified action hydrocentrifugal machines
    Patent number: 4357797
    Abstract: A hydrocentrifugal machine is disclosed in which the rotor is a vortex-expeller rotor defining two generally spiral-shaped vortex-expeller passages and a hydraulic induction coil comprising a helical, inwardly-opening channel is affixed to the inner face of the outer, cylindrical wall of the centrifugation chamber.
    Type: Grant
    Filed: March 14, 1980
    Date of Patent: November 9, 1982
    Inventor: Fred M. Siptrott