Patents by Inventor Juergen Markwart

Juergen Markwart 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).

  • Brake valve for a hydraulic transmission
    Patent number: 7334403
    Abstract: The invention relates to control of a hydrostatic gearbox, comprising a hydraulic pump (2), provided for pumping in a first pump-side main line (5a) or a second pump-side main line (6a). The hydrostatic gearbox further comprises a hydraulic motor (3), connected to a first motor-side main line (5b) and a second motor-side main line (6b). The first pump-side main line (5a) and the second pump-side main line (6a) may be connected to the first motor-side main line (5b) or the second motor-side main line (6b) by means of a brake valve unit (19). The first motor-side main line (5b) or the second motor-side main line (6b), arranged downstream of the hydraulic motor (3), may be connected to a tank volume (12) in a throttled manner, depending on the pressure therein.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 26, 2008
    Assignee: Brueninghaus Hydromatik GmbH
    Inventor: Juergen Markwart
  • Control of a hydrostatic gearbox
    Publication number: 20060112684
    Abstract: The invention relates to control of a hydrostatic gearbox, comprising a hydraulic pump (2), provided for pumping in a first pump-side main line (5a) or a second pump-side main line (6a). The hydrostatic gearbox further comprises a hydraulic motor (3), connected to a first motor-side main line (5b) and a second motor-side main line (6b). The first pump-side main line (5a) and the second pump-side main line (6a) may be connected to the first motor-side main line (5b) or the second motor-side main line (6b) by means of a brake valve unit (19). The first motor-side main line (5b) or the second motor-side main line (6b), arranged downstream of the hydraulic motor (3), may be connected to a tank volume (12) in a throttled manner, depending on the pressure therein.
    Type: Application
    Filed: December 19, 2003
    Publication date: June 1, 2006
    Inventor: Juergen Markwart