Patents Assigned to Otto Egelhof GmbH & Co. KG, Regelungstechnik
  • Method of producing a valve arrangement for an expansion valve
    Patent number: 7849600
    Abstract: The invention relates to a method of producing a valve arrangement and to a valve arrangement for an expansion valve, which is provided in a vehicle air conditioning system operated with refrigerant and has a basic opening in the valve seat, the cross section of this basic opening being produced for a predetermined mass flow by material removal.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: December 14, 2010
    Assignee: Otto Egelhof GmbH & Co. KG, Regelungstechnik
    Inventors: Uta Andrä, Siegfried Roth, Albrecht Waldenburg, Jean-Jacques Robin, Ralf Winterstein, Klaus Kummerow
  • Expansion valve and method for controlling it
    Patent number: 7487647
    Abstract: The invention relates to an expansion valve and to a method for controlling an expansion valve, in which the opening and closing movement of the valve-closure member is set as a function of the pressure difference which is present in a feed opening on the high pressure side and in a discharge opening.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: February 10, 2009
    Assignee: Otto Egelhof GmbH & Co. KG, Regelungstechnik
    Inventors: Jean-Jacques Robin, Ralf Winterstein, Klaus Kummerow