Patents by Inventor Frederick Norman Zimmermann

Frederick Norman Zimmermann 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).

  • Patent number: 4080112
    Abstract: A high-volume, heavy-duty, magnetically-coupled centrifugal pump having flow-dividing duct configurations directing the influx to opposite sides of the impeller as the result of assembly of mating body sections defining a multi-chambered pump body and including major partitioning web and cavity configurations with cooperative plate means affording certain inflow-chamber, shaft-support, and turbulence-suppressing chamber configurations operative to diminish turbulence volume and also block transfer of turbulence effects from the magnet rotor back to the impeller while permitting liquid to fill into the magnet chamber, the magnet rotor having web and passage configurations operative to force liquid and create pressure behind the rotor to create counterforces opposing certain thrust forces.
    Type: Grant
    Filed: February 3, 1976
    Date of Patent: March 21, 1978
    Assignee: March Manufacturing Company
    Inventor: Frederick Norman Zimmermann