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. 13, 2008
Filed:
Mar. 21, 2005
Michael Reuschel, Ottersweier, DE;
Martin Vorhnehm, Bühl, DE;
Christian Lauinger, Baden-Baden, DE;
Bernhard Walter, Oberkirch, DE;
Michael Reuschel, Ottersweier, DE;
Martin Vorhnehm, Bühl, DE;
Christian Lauinger, Baden-Baden, DE;
Bernhard Walter, Oberkirch, DE;
Abstract
A method and a system for reducing a jerk produced by the range shift of a transmission with a power division arrangement. The transmission includes a variable speed drive in the form of a continuously variable transmission, and a pair of planetary gear sets and a pair of shift clutches to enable power to be divided between two branches within the transmission. During a range shift between two operating ranges the variable speed drive is acted upon by a short-term transmission ratio adjustment impulse in such a way that a cancellation jerk caused thereby the adjustment impulse weakens the jerk caused by the range shift.