Patents by Inventor Axel Persch

Axel Persch 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).

  • Refrigerator comprising a regenerator
    Patent number: 7213399
    Abstract: A refrigerator (1) has a housing (2, 14, 19), a cylindrical working chamber (15, 21), a cylindrical displacing member (11, 17), a gap (36, 38) which is located between the housing and the displacing member, a regenerator which is disposed inside the displacing member, and a device alternatingly supplying the working chamber with an effective high-pressure gas and an effective low-pressure gas. In order to overcome the disadvantages associated with gas streams occurring in the gap (36, 38), an additional regenerator (gap gas regenerator), (43) is assigned to the gap (36, 38).
    Type: Grant
    Filed: May 13, 2003
    Date of Patent: May 8, 2007
    Assignee: Oerlikon Leybold Vacuum GmbH
    Inventors: Holger Dietz, Heinz-Josef Dubbelfeld, Jiri Melichar, Axel Persch, Mario Pietrangeli, Ernst Schnacke, André Siegel, Axel Veit
  • Refrigerator comprising a regenerator
    Publication number: 20060042272
    Abstract: A refrigerator (1) has a housing (2, 14, 19), a cylindrical working chamber (15, 21), a cylindrical displacing member (11, 17), a gap (36, 38) which is located between the housing and the displacing member, a regenerator which is disposed inside the displacing member, and a device alternatingly supplying the working chamber with an effective high-pressure gas and an effective low-pressure gas. In order to overcome the disadvantages associated with gas streams occurring in the gap (36, 38), an additional regenerator (gap gas regenerator), (43) is assigned to the gap (36, 38).
    Type: Application
    Filed: May 13, 2003
    Publication date: March 2, 2006
    Inventors: Holger Dietz, Heinz-Josef Dubbelfeld, Jiri Melichar, Axel Persch, Mario Pietrangeli, Ernst Schnacke, Andre Siegel, Axel Veit