Patents by Inventor Friedhelm Ahrens

Friedhelm Ahrens 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).

  • Compressor
    Patent number: 6814551
    Abstract: A compressor for refrigerant, comprising a housing and a scroll compressor including a first compressor body in a stationary position in the housing, and a second compressor body which can move relative to the first compressor body. A drive for the second compressor body has a drive motor. A rear-side cooling chamber is arranged between the rear side of the first compressor body and a partition of the housing, which runs at a spacing from the rear side. At least one aperture in the base of the first compressor body is configured to cool the first compressor body in the region of the rear side. The second compressor body is configured to enable the refrigerant to wash around the compressor body in the region of the rear side, remote from the scroll ribs, to cool the second compressor body.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: November 9, 2004
    Assignee: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Karl-Fr. Kammhoff, Friedhelm Ahrens
  • Compressor
    Publication number: 20030031570
    Abstract: In order for a compressor for refrigerant, comprising
    Type: Application
    Filed: August 7, 2002
    Publication date: February 13, 2003
    Applicant: Bitzer Kuehlmaschinenbau GmbH
    Inventors: Karl-Fr. Kammhoff, Friedhelm Ahrens