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. 07, 2008
Filed:
Mar. 07, 2006
Rainer Petzold, Friedrichshafen, DE;
Mario Steinborn, Friedrichshafen, DE;
Stefan Veittinger, Langenargen, DE;
Rainer Petzold, Friedrichshafen, DE;
Mario Steinborn, Friedrichshafen, DE;
Stefan Veittinger, Langenargen, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A method for controlling operational sequencing of gears in an automatic transmission () which has been built in an auxiliary mode. In the case of such a shifting transmission it is possible that during the engagement of its transmission gear stage, impact noises or contact noises are present in the shifting procedure. This can occur by the generation of a tooth-on-tooth positioning between the toothing of a sliding collar () and the come-along toothing of an idler gear (). Provision is made for the control of the activation movement of the sliding collar () carried out in such a manner that an activation condition impact of the transmission parts, which are partakers in the shifting associated transmission part onto other transmission parts with the least possible impact force and/or with a least possible impact noise level.