Patents by Inventor Patrick T. Murphy

Patrick T. Murphy 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: 5522601
    Abstract: An interlocking labyrinth sealing assembly for sealing about a rotary shaft. The assembly includes a stator element having a forward extending lip which forms a radially inward extending groove and a rotor element which has a flange which extends outwardly about the lip and includes a downwardly depending rim which extends into the groove to place and maintain the rotor in a desired position relative to the stator so that a labyrinth seal is established between the rotor and stator. The lip of the stator also includes a sloped guiding surface to outwardly deflect the flange of the rotor so that the rim may be positioned within the groove.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: June 4, 1996
    Assignee: Goulds Pumps, Incorporated
    Inventor: Patrick T. Murphy
  • Patent number: 4789301
    Abstract: An improved low specific speed pump is disclosed, which provides for greater consistency of pump operating efficiencies obtainable by pumps of any given group of like size pumps. In the present pump, the internal dimensions of the pump chamber and discharge passage are enlarged to provide for a reduction in flow velocities therewithin compared to a conventional pump of a given design flow capacity and a controlled size restrictor is arranged adjacent the pump discharge in order to reduce the resultant increase in flow capacity to such given design value.
    Type: Grant
    Filed: March 27, 1986
    Date of Patent: December 6, 1988
    Assignee: Goulds Pumps, Incorporated
    Inventors: James C. Osborne, Patrick T. Murphy
  • Patent number: D293755
    Type: Grant
    Filed: September 24, 1984
    Date of Patent: January 19, 1988
    Assignee: Omega Posture Systems Inc.
    Inventor: Patrick T. Murphy