Patents by Inventor Markus Speer

Markus Speer 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).

  • Method and circuit for on/off control of the compressor of a motor vehicle air conditioner
    Patent number: 5826439
    Abstract: A method and circuit are provided for on/off control of the compressor of a motor vehicle air conditioner, in which the compressor is shut off when the evaporator temperature measured by an evaporator temperature sensor drops below a presettable shutoff temperature value located above 0.degree. C. The shutoff temperature value is set to fall as a function of the evaporator blower power and/or the temperature of the air drawn in by the evaporator blower with rising blower power or with rising intake air temperature. The circuit includes a control stage whose output signal is fed to an on/off switching element of the compressor and depends on the voltage level at an input node, which varies with the supply voltage of the evaporator blower and/or the output voltage of the intake air temperature sensor.
    Type: Grant
    Filed: March 4, 1996
    Date of Patent: October 27, 1998
    Assignee: Behr GmbH & Co.
    Inventors: Wilhelm Baruschke, Karl Lochmahr, Markus Speer