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:
Apr. 27, 2010
Filed:
Dec. 22, 2007
Martin Vornehm, Wooster, OH (US);
Christian Lauinger, Baden-Baden, DE;
Hartmut Faust, Bühl, DE;
Michael Reuschel, Ottersweier, DE;
Martin Vornehm, Wooster, OH (US);
Christian Lauinger, Baden-Baden, DE;
Hartmut Faust, Bühl, DE;
Michael Reuschel, Ottersweier, DE;
Abstract
A power-split transmission having several ranges of transmission ratios with continuously variable speed reductions. A drive shaft is connected to two shafts of a variable speed drive unit via a distributor gear whose shafts are in turn connected with the input shafts of a parallel gearbox via respective clutches. Two ranges of ratios only differ from each other through the reduction of the input shaft of the parallel gearbox and their output shafts. An additional embodiment includes a variable speed drive unit, a first planetary drive that is connected with a drive shaft, an input shaft of the variable speed drive unit and a connecting shaft, as well as a second planetary drive that is connected with the connecting shaft of the output shaft of the variable speed drive unit, and an output shaft and an electric motor that is nonrotatably connected with the connecting shaft.