Patents by Inventor Richard W. Murphy

Richard W. 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).

  • Heat pump having improved defrost system
    Patent number: 5845502
    Abstract: A heat pump system includes, in an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant: a compressor; an interior heat exchanger; an exterior heat exchanger; an accumulator; and means for heating the accumulator in order to defrost the exterior heat exchanger.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: December 8, 1998
    Assignee: Lockheed Martin Energy Research Corporation
    Inventors: Fang C. Chen, Viung C. Mei, Richard W. Murphy
  • Extruder screw for minimizing the opposing pressure flow
    Patent number: 4642041
    Abstract: This invention, in its preferred embodiment, relates to an improved extruder screw, for plastics and like materials, wherein said screw includes, in sequence, a (1) feed section, (2) transition section, and (3) metering section, and a plurality of back flow seals to minimize the pressure flow opposing the moving materials passing therealong. Preferably, said seals comprise a first length of flighting having a reduced pitch over that preceding said first length of flighting, and a second length of flighting having zero pitch.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: February 10, 1987
    Inventor: Richard W. Murphy
  • Vase cover
    Patent number: 4280635
    Abstract: A thermo plastic cover for a vase with a flat recessed circular top and a raised flat surface surrounding the periphery with a sloped edge formed circumferencially and an edge continuing at 90.degree. to the flat top. A circular series of sloped flanges on the underside surface interface with the lip of a floral vase forming a cover that snaps into place providing a lid to convert the vase to an attractive display stand or stool.
    Type: Grant
    Filed: September 27, 1979
    Date of Patent: July 28, 1981
    Inventor: Richard W. Murphy
  • Double beam corner support bracket
    Patent number: D500666
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 11, 2005
    Assignee: Innovative Safety Products Incorporated
    Inventors: Richard W. Murphy, John Joseph Murphy
  • Corner support bracket
    Patent number: D500667
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: January 11, 2005
    Assignee: Innovative Safety Products Incorporated
    Inventors: Richard W. Murphy, John Joseph Murphy
  • Wall opening support bracket
    Patent number: D503330
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: March 29, 2005
    Assignee: Innovative Safety Products Incorporated
    Inventors: Richard W. Murphy, John Joseph Murphy
  • Combined canister and flower arrangement container
    Patent number: D253928
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: January 15, 1980
    Inventor: Richard W. Murphy
  • Bud vase
    Patent number: D260088
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: August 4, 1981
    Inventor: Richard W. Murphy
  • Ground inserted flower vase
    Patent number: D260749
    Type: Grant
    Filed: April 6, 1979
    Date of Patent: September 15, 1981
    Inventor: Richard W. Murphy
  • Flower pot holder
    Patent number: D260750
    Type: Grant
    Filed: June 7, 1979
    Date of Patent: September 15, 1981
    Inventor: Richard W. Murphy
  • Cubic pedestal box
    Patent number: D425730
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: May 30, 2000
    Inventor: Richard W. Murphy
  • Hexagonal pedestal box
    Patent number: D429429
    Type: Grant
    Filed: December 24, 1998
    Date of Patent: August 15, 2000
    Inventor: Richard W. Murphy