Patents by Inventor Friedbert Roether

Friedbert Roether 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).

  • Vent conduit through position monitoring device for a work cylinder
    Patent number: 5123330
    Abstract: A work cylinder in which the position of a work piston, its distance traveled at a given time and the speed at which it covers this distance are measured by a hollow-cylindrical sensor, and the results are delivered to an electronic switch device. The sensor serves as a passage for the breathing air of a breathing chamber of the work cylinder, as a result of which the sensor can be cooled. The work cylinder is intended for use to control vehicle engine clutches.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: June 23, 1992
    Assignee: Robert Bosch GmbH
    Inventors: Friedbert Roether, Norbert Schneider, Manfred Siebold