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:
Aug. 25, 2015
Filed:
Nov. 15, 2012
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Eckhardt Lubke, Friedrichshafen, DE;
Johannes Kaltenbach, Friedrichshafen, DE;
Bernard Hunold, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A transmission having two clutches connected between a drive and respective transmission input shafts, one being hollow which supports the other within. A hollow countershaft which supports another countershaft therein. A main shaft arranged coaxially between the inner input shaft and an output shaft. Shifting elements can engage a variety of transmission connections in which transmission elements of the main group couple transmission elements of the range group which can couple the output shaft. The hollow countershaft has three fixed wheels which engage respective loose wheels, and the countershafts are rigidly coupled by a shifting element. With respect to this shifting element: an adjacent loose wheel rotates on and can rigidly couple the main shaft; a remote loose wheel rotates on and can rigidly couple the inner input shaft; and a central loose wheel rotates on and can rigidly couple at least one of the inner input and main shafts.