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:
Oct. 28, 2014
Filed:
May. 04, 2011
Markus Maurer, Lindau, DE;
Markus Maurer, Lindau, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method of shifting at least one of a speed increasing stage (H) and/or a speed reductions stage (L) in a claw shifted transfer gear box (VG) in a drive train of a vehicle having a drive engine and a load shiftable shift transmission (SG). The transfer gearbox (VG) is shifted into the neutral position (N) and, after the synchronization, is shifted into the speed increasing stage (H) or the speed reductions stage (L). During synchronization, the shift transmission (SG) is decelerated or accelerated, by activating at least an additional shift element, so that the output rotational speed (n_SG) of the shift transmission (SG) is matched to the output rotational speed (n_VG) of the transfer gearbox (VG), multiplied by the target gear ratio in the transfer gear box (VG).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile