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:
Mar. 12, 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;
Markus Maier, Friedrichshafen, DE;
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Juergen Wafzig, Eriskirch, DE;
Matthias Reisch, Ravensburg, DE;
Wolfgang Rieger, Friedrichshafen, DE;
Ralf Dreibholz, Meckenbeuren, DE;
Markus Maier, Friedrichshafen, 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 respective countershaft which have an output gear that couple gears of an output shaft such that forward and reverse gears can be shifted. Three dual gear planes each comprise two idler gears, each supported by a respective countershaft, and one fixed gear. In each dual gear plane, at least one idler gear wheel can be used for implementing at least two gears so that at least one winding-path gear can be shifted via a shifting device.