Patent · US Expired

Hydraulically operated clutch system

US6889811B2 · kind B2 · utility

12Cited by

9References

17Claims

0Family size

Assignee

ZF Sachs AG · DE

Inventors

Angelika Ebert · Schonungen, DE
Jochen Kuhstrebe · Wassertrüdingen, DE
Thomas Busold · Brauel, DE

Key dates

Filing date	Jan 22, 2002
Grant date	May 10, 2005
Priority date	—
Expiry date	Jan 22, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D2500/3026
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A clutch system includes a clutch device for positioning in a drive train between a drive unit and a transmission, and an actuating unit for hydraulically actuating the clutch device by means of at least one hydraulic slave-cylinder. The actuating unit has a hydraulic-medium delivery device for delivering a pressurized hydraulic medium, and a valve assembly, whose mediation allows the hydraulic medium to be supplied to and discharged from the slave-cylinder. The valve assembly comprises at least one supply valve, located in a hydraulic connection, between the hydraulic-medium delivery device and the slave-cylinder and at least one discharge valve, which is separate from the supply valve and located in a hydraulic connection, between the slave-cylinder and a hydraulic-medium reservoir.

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