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:
Aug. 27, 2013
Filed:
Jul. 28, 2008
Klaus Steinhauser, Kressbronn, DE;
Frank Worms, Langenargen, DE;
Stephane Klein, Friedrichshafen, DE;
Walter Hecht, Ravensburg, DE;
Bernd Zaenglein, Friedrichshafen, DE;
Klaus Steinhauser, Kressbronn, DE;
Frank Worms, Langenargen, DE;
Stephane Klein, Friedrichshafen, DE;
Walter Hecht, Ravensburg, DE;
Bernd Zaenglein, Friedrichshafen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for shifting an automatic or an automated transmission of a motor vehicle to a 'neutral' position such that the shift position of the transmission and a parking lock, provided for keeping the motor vehicle stationary, are engaged as a function of a shift position selected with a driver operated selector device and as a function of other operating parameters of the motor vehicle. A holding phase, in which the transmission is in the neutral position, free from friction force locking, can be activated by a separate operating device which is provided, in addition to the selector device, but only when the motor vehicle is simultaneously at least approximately stationary, an ignition current circuit that acts on a drive engine of the motor vehicle is electrically interrupted, and the 'neutral' (N) shift position is specified by a selector device.