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:
Jan. 29, 2013
Filed:
Oct. 08, 2008
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Juergen Wafzig, Eriskirch, DE;
Matthias Reisch, Ravensburg, DE;
Wolfgang Rieger, Friedrichshafen, DE;
Ralf Dreibholz, Meckenbeuren, DE;
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Juergen Wafzig, Eriskirch, DE;
Matthias Reisch, Ravensburg, DE;
Wolfgang Rieger, Friedrichshafen, DE;
Ralf Dreibholz, Meckenbeuren, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Three dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears such that at least one winding-path gear is engaged by engagement of a disengaged output coupling device assigned to one of the output gear wheels.