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:
May. 21, 2013
Filed:
Aug. 19, 2010
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Christian Sibla, Friedrichshafen, DE;
Stefan Beck, Eriskirch, DE;
Josef Haupt, Tettnang, DE;
Gert Bauknecht, Friedrichshafen, DE;
Peter Ziemer, Tettnang, DE;
Gerhard Gumpoltsberger, Friedrichshafen, DE;
Christian Sibla, Friedrichshafen, DE;
Stefan Beck, Eriskirch, DE;
Josef Haupt, Tettnang, DE;
Gert Bauknecht, Friedrichshafen, DE;
Peter Ziemer, Tettnang, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A multi step transmission comprises planetary gearsets (P, P, P, P), shafts and shift elements. The sun gear of gearset (P) couples housing (G). The carrier of gearset (P) couples shaft (), which couples housing (G) via brake (), drive shaft () via clutch (), and shaft () via clutch (). Shaft () operatively couples the sun gear of gearset (P) and couples the ring gear of gearset (P) and the sun gear of set (P). Shaft () couples, via clutch (), shaft (), which couples the sun gear of gearset (P), and operatively couples the carrier of gearset (P). Shaft () couples the ring gear of gearset (P) and the carrier of gearset (P) The ring gear of gearset (P) couples shaft (), which couples housing (G) via brake (), and output shaft () couples the ring gear of gearset (P) and the carrier of set (P).