Patents by Inventor Mathew John Torgerson

Mathew John Torgerson 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).

  • Multistage centrifugal pump
    Patent number: 6227802
    Abstract: The invention concerns a fluid pumping apparatus including a pump unit having an inlet housing, a plurality of pumping stages, and a discharge housing, surrounded by a continuous layer of waterproof material. The waterproof layer is further surrounded by a structural shell. Moreover, the pump unit is threadably engaged to a motor adapter, and no tools are required for the attachment of the pump unit to, or removal of the pump unit from, the motor adapter. The motor adapter is designed so that the mechanical seal is easily accessible.
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: May 8, 2001
    Assignee: Osmonics, Inc.
    Inventors: Mathew John Torgerson, Wilbert Essig, Jr., Brent James Weyer