Patent · US Active

Device for controlling and/or regulating a hydraulically activatable shifting element of a gearing mechanism and a gearing mechanism

US7703348B2 · kind B2 · utility

4Cited by

11References

18Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Matthias Reisch · Ravensburg, DE
Martin Grumbach · Friedrichshafen, DE
Hans-Jorg Domian · Markdorf, DE

Key dates

Filing date	Dec 8, 2006
Grant date	Apr 27, 2010
Priority date	—
Expiry date	Dec 8, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/20024
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A device (1) is described for controlling and/or regulating a hydraulically activatable shifting element. The shifting element (2) is configured with a piston-cylinder unit (3) 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 (1) is provided with an electric motor (5) that can be actuated by a control and/or regulator unit (4), and which is provided with a drive-transformer device (6) that has a functional connection to the electric motor (5), by way of which the rotational drive of the electric motor (5) can be transformed into the hydraulic operating pressure (p) for the shifting element (2).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.