Patents by Inventor Herbert G. Pattison

Herbert G. Pattison 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).

  • Top suction sump pump having bottom suction impeller
    Patent number: 5205725
    Abstract: A submersible sump pump includes a pump housing having a volute chamber in which a centrifugal impeller rotates about a vertical axis. The impeller draws water in axially from below from a fluid passage having a closed bottom, the fluid passage having a plurality of inlets located about the perimeter of the pump housing at an elevation above the level of the outlet from the fluid passage to the volute chamber. Thus, a bottom suction impeller arrangement is provided that prevents debris from the floor of the sump being drawn into the pump.
    Type: Grant
    Filed: July 16, 1991
    Date of Patent: April 27, 1993
    Assignee: Wayne/Scott Fetzer Company
    Inventor: Herbert G. Pattison