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:
Jun. 26, 2012
Filed:
Aug. 11, 2009
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Martin Brehmer, Tettnang, DE;
Peter Ziemer, Tettnang, DE;
Peter Tiesler, Meckenbeuren, DE;
Gabor Diosi, Friedrichshafen, DE;
Josef Haupt, Tettnang, DE;
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Martin Brehmer, Tettnang, DE;
Peter Ziemer, Tettnang, DE;
Peter Tiesler, Meckenbeuren, DE;
Gabor Diosi, Friedrichshafen, DE;
Josef Haupt, Tettnang, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A multi-speed transmission having four gearsets, eight shafts and six shifting elements. The sun gear of gearset (P) couples, via shaft () and brake (), the housing (G), and, via clutch () the drive shaft. The carriers of gearsets (P, P) communicate, via shaft () and brake (), with housing (G), and the sun gear of gearset (P) communicates, via shaft () and clutch (), with the drive shaft. The ring gears of gearsets (P, P) communicate, via shaft (), with the ring gear of gearset (P) and the sun gear of gearset (P). The ring gear of gearset (P) and the sun gear of gearset (P) are connected with one another. The sun gear of gearset (P) communicates, via shaft () and brake (), with housing (G). The carriers of gearsets (P, P) communicate, via shaft () and clutch (), with the drive shaft and the output shaft couples the ring gear of gearset (P).