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:
Apr. 27, 2010
Filed:
Dec. 08, 2006
Matthias Reisch, Ravensburg, DE;
Martin Grumbach, Heimenkrich, DE;
Hans-jörg Domian, Immenstaad, DE;
Matthias Reisch, Ravensburg, DE;
Martin Grumbach, Heimenkrich, DE;
Hans-Jörg Domian, Immenstaad, DE;
ZF Friedrichshafen AG, Friedrichshafen, DE;
Abstract
A device () is described for controlling and/or regulating a hydraulically activatable shifting element. The shifting element () is configured with a piston-cylinder unit () that can be acted upon by a hydraulic operating pressure (p) and can be arranged in an installation space that is connected to an oil sump of the gearing mechanism device. In addition, the device () is provided with an electric motor () that can be actuated by a control and/or regulator unit (), and which is provided with a drive-transformer device () that has a functional connection to the electric motor (), by way of which the rotational drive of the electric motor () can be transformed into the hydraulic operating pressure (p) for the shifting element ().