Patents by Inventor Ernst Hartmann

Ernst Hartmann 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).

  • Patent number: 5139158
    Abstract: To couple the initiation and the chronological sequence of a coupling or uncoupling process of a mechanical middle buffer coupling and an electrical cable coupling with a common rotary drive with the smallest amount of control effort possible in a reliable manner, a coupling and uncoupling device has a shaft, which can be driven at right angles to the coupling axis and is fastened non-rotatably on an actuating arm that extends into a guide rail of the cable coupling and is consequently designed as a direct drive member of the cable coupling, wherein an uncoupling lever for the mechanical middle buffer coupling and the actuating arm are positively coupled via the shaft. A switching device for the coupling and uncoupling device with switches and initiating members or control cams controls the initiation and the chronological sequences of the coupling and uncoupling process of the mechanical middle buffer coupling and the electrical cable coupling.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: August 18, 1992
    Assignee: ScharfenbergKupplung GmbH
    Inventors: Harald Lindner, Ernst Hartmann
  • Patent number: 5094354
    Abstract: To couple the initiation and the chronological sequence of a coupling or uncoupling process of a mechanical middle buffer coupling and an electrical cable coupling arranged on it longitudinally displaceably in the direction of the coupling axis with a common rotary drive with the smallest possible amount of control effort and in a reliable manner, a coupling and uncoupling device is provided with a drivable shaft arranged at right angles to the coupling axis. An actuating arm is nonrotatably fastened to the drivable shaft, and the actuating arm extends into a guide rail of the cable coupling and is thus designed as the direct drive member of the cable coupling.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: March 10, 1992
    Assignee: Scharfenbergkupplung GmbH
    Inventors: Harald Lindner, Ernst Hartmann
  • Patent number: 4718687
    Abstract: Multi-axle motor vehicle, particularly commercial vehicles, preferably a motor vehicle with a body, of which the contents is comprised of instruments, such as a workshop car, the motor vehicle comprising a warp flexible frame (1, 2) and the body being discharged as much as possible of warping efforts: the body, respectively its bottom construction group (8), is supported at least at one end, preferably throughout its length with distribution on several locations and at both ends, on a load distribution curve surface (5), preferably configured as an arc of a circle, connected to the frame (1, 2), the curvature center of the load distribution curve surface (5) being located in the warping axis of the frame (1, 2, 3, 4): at least one side thrust support connection (12) is provided in order to prevent the load distribution surface (6) from sliding on the load distribution curve surface (5).
    Type: Grant
    Filed: February 24, 1986
    Date of Patent: January 12, 1988
    Assignee: Matra-Werke GmbH
    Inventors: Ernst Hartmann, Waldemar Stuhr