Patents by Inventor Robert W. Piazza

Robert W. Piazza 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).

  • Magnetic drive pump with axially adjustable impeller
    Patent number: 5368439
    Abstract: Magnetic pump apparatus with a pump housing including a volute and having a pump housing interior at least partially defined by the volute. A support shaft is mounted in the pump housing interior. An impeller is supported on the support shaft and rotatably mounted in the pump housing interior. The position of the impeller relative to the volute can be adjusted when the impeller is supported on the support shaft and in the pump housing interior.
    Type: Grant
    Filed: October 12, 1993
    Date of Patent: November 29, 1994
    Assignee: Price Pump Manufacturing Company
    Inventor: Robert W. Piazza