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:
Nov. 19, 2019
Filed:
Jul. 21, 2015
Zf Friedrichshafen Ag, Friedrichshafen, DE;
Peter Ziemer, Tettnang, DE;
Josef Haupt, Tettnang, DE;
Christoph Margraf, Markdorf, DE;
Markus Herrmann, Scheidegg, DE;
Thilo Schmidt, Meckenbeuren, DE;
Ulrich Doerr, Constance, DE;
Christian Sibla, Eriskirch, DE;
Stefan Beck, Eriskirch, DE;
Maik Wiesner, Weingarten, DE;
Stefan Brom, Friedrichshafen, DE;
ZF FRIEDRICHSHAFEN AG, Friedrichshafen, DE;
Abstract
A system for locking and releasing a shifting position of a shifting element that is hydraulically actuatable by an actuating pressure is provided. The shifting element is arranged coaxially with a transmission shaft. The system includes a stop valve. The stop valve is subjectable to a control pressure that is separate from the actuating pressure of the shifting element. The stop valve is arranged radially inside the shifting element in the transmission housing.