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:
Jul. 17, 2007
Filed:
May. 05, 2003
Gert Bauknecht, Friedrichshafen, DE;
Manfred Bucksch, Friedrichshafen, DE;
Lutz Gärtner, Langenargen, DE;
Heribert Scherer, Meckenbeuren, DE;
Peter Ziemer, Tettnang, DE;
Gert Bauknecht, Friedrichshafen, DE;
Manfred Bucksch, Friedrichshafen, DE;
Lutz Gärtner, Langenargen, DE;
Heribert Scherer, Meckenbeuren, DE;
Peter Ziemer, Tettnang, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
The invention concerns an automatic gearbox, with a drive input shaft () which is connected to a shiftable reduction planetary gear set (), with a drive output shaft () which is connected to a shiftable main planetary gear set (), and with five shifting elements (A to E) by the selective closing of which six forward speeds can be engaged without range change. An output element of the reduction planetary gear set () can be connected via a first shifting element (A) to a first input element of the main planetary gear set () and via a second shifting element (B) to a second input element of the main planetary gear set (). The drive input shaft () can be connected via a fifth shifting element (E) to a third input element of the main planetary gear set (). A solar gear wheel () of the reduction planetary gear set () is in particular fixed on a cylindrical projection () of a gearbox housing wall (). The reduction planetary gear set () is made as a Plus transmission with inner and outer planetary gear wheels (), whose webs () are connected to one another.