Patents by Inventor Manfred Unsöld

Manfred Unsöld 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).

  • Pressure medium supply arrangement for a continuous variable transmission
    Patent number: 6387000
    Abstract: A pressure medium supply arrangement for a CVT transmission has a pump that supplies pressure medium to control cylinders of the CVT transmission in order to change a gear ratio of the CVT transmission. The pump has a high pressure side and a low pressure side. The pump further has a bypass channel connecting the high pressure side and the low pressure side. An electrically controlled control valve arrangement is connected to the pump for opening and closing the bypass channel in order to adjust a conveyed flow of the pump.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: May 14, 2002
    Assignee: Hydraulik-Ring GmbH
    Inventors: Egon Eisenbacher, Manfred Unsöld
  • Hydraulic positive displacement machine
    Patent number: 6293777
    Abstract: A hydraulic positive displacement machine has rotating conveying elements whose end faces are sealed by pressure plate. This pressure plate is loaded by a control valve with hydraulic pressure in order to adjust the size of the sealing gap. The control valve has a hollow piston in which a metering orifice is located. A return connector, a connector communicating with a consumer, and a hydraulic control connector connected to the pressure plate can be controlled by the hollow piston with its metering orifice.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: September 25, 2001
    Assignee: Hydraulik-Ring GmbH
    Inventor: Manfred Unsöld