Patents by Inventor Hartmut Specht

Hartmut Specht 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).

  • Rack-and-pinion steering
    Patent number: 7305901
    Abstract: A rack-and-pinion steering system, in particular for a motor vehicle, has a steering housing and a pinion which is inserted into the steering housing If. A rack whose toothing engages with the pinion is mounted so as to be axially displaceable in the steering housing. The rack-and-pinion steering system has a circulation lubrication system with lubricating oil, an arrangement for conveying lubricating oil from a lubricating-oil reservoir conveying lubricating oil to the toothing engagement location between the rack and the pinion.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: December 11, 2007
    Assignee: ZF Lenksysteme GmbH
    Inventors: Franz-Josef Joachim, Jens-Uwe Hafermalz, Rainer Schaenzel, Karl Benkler, Hartmut Specht, Hermann Ocker