The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2005
Filed:
Oct. 29, 2003
Christoph Pelchen, Tettnang, DE;
Ünal Gazyakan, Friedrichshafen, DE;
Barbara Schmohl, Friedrichshafen, DE;
Christoph Pelchen, Tettnang, DE;
Ünal Gazyakan, Friedrichshafen, DE;
Barbara Schmohl, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
An auxiliary transmission () with controllable clutch () is described for the optional distribution of a drive output torque to one or more drive output shafts with a reduction gear stage () and with a hydraulic pump (). The hydraulic pump () is arranged on a transmission input shaft () and the reduction gear stage () is connected in series in such manner that the drive input power to the hydraulic pump () remains at least approximately the same when a range change takes place in the reduction gear stage ().