Patent · US Expired

Actuating device, especially a hydraulic or pneumatic actuator, for transmissions of vehicles, particularly motor vehicles

US6981429B2 · kind B2 · utility

3Cited by

5References

33Claims

0Family size

Assignee

Hydraulik-Ring GmbH · DE

Inventors

Dieter Maisch · Dessau, DE
Hartmut Weber · Altdorf, DE
Alfred Trzmiel · Gräfenberg, DE

Key dates

Filing date	Sep 10, 2003
Grant date	Jan 3, 2006
Priority date	—
Expiry date	Sep 10, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T74/19433
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

An actuating device for a transmission of a motor vehicle has a housing and two pistons moveably arranged in the housing. A coupling part is arranged between the two pistons and is acted on by the two pistons so as to be moved by the two pistons. The coupling part is connected to a shifting part of the transmission and is made, at least on a surface of the coupling part, of wear-resistant material. The two pistons are loosely seated on the coupling part so that these parts can align themselves properly relative to one another after mounting.

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