Patents by Inventor William Hahn

William Hahn 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).

  • Scroll compressor with flow restriction and back pressure chamber tap
    Publication number: 20040241028
    Abstract: Scroll compressors include a tap for communicating a compressed refrigerant to a back pressure chamber to resist a separating force. A restriction is placed within this tap to slow build-up of the back pressure chamber at start-up. Further, the restriction smoothes out any fluctuations in the back pressure force as the pressure in the compression chamber from which the refrigerant is tapped may fluctuate.
    Type: Application
    Filed: July 7, 2004
    Publication date: December 2, 2004
    Inventors: Robert Carl Witham, Gregory William Hahn, Gene Michael Fields, Thomas Robert Barito
  • Scroll compressor with flow restriction and back pressure chamber tap
    Patent number: 6761545
    Abstract: Scroll compressors include a tap for communicating a compressed refrigerant to a back pressure chamber to resist a separating force. A restriction is placed within this tap to slow build-up of the back pressure chamber at start-up. Further, the restriction smoothes out any fluctuations in the back pressure force as the pressure in the compression chamber from which the refrigerant is tapped may fluctuate.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: July 13, 2004
    Assignee: Scroll Technologies
    Inventors: Robert Carl Witham, Gregory William Hahn, Gene Michael Fields, Thomas Robert Barito
  • SCROLL COMPRESSOR WITH FLOW RESTRICTION AND BACK PRESSURE CHAMBER TAP
    Publication number: 20040126260
    Abstract: Scroll compressors include a tap for communicating a compressed refrigerant to a back pressure chamber to resist a separating force. A restriction is placed within this tap to slow build-up of the back pressure chamber at start-up. Further, the restriction smoothes out any fluctuations in the back pressure force as the pressure in the compression chamber from which the refrigerant is tapped may fluctuate.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventors: Robert Carl Witham, Gregory William Hahn, Gene Michael Fields, Thomas Robert Barito
  • Shoe sole
    Patent number: D277809
    Type: Grant
    Filed: November 22, 1982
    Date of Patent: March 5, 1985
    Inventor: William Hahn