Patent · US Expired

Transmission-clutch operating system

US4354584A · kind A · utility

3Cited by

8References

5Claims

0Family size

Assignees

Zahnradfabrik Friedrichshafen AG · DE
Knorr-Bremse AG · DE

Inventors

Gunther Reifinger · Germering, DE
Christian Fuchs · Heilsbronn, DE
Alfred Magg · Friedrichshafen, DE
Gerold Bieber · Tettnang, DE

Key dates

Filing date	Oct 30, 1979
Grant date	Oct 19, 1982
Priority date	—
Expiry date	Oct 30, 1999

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87225
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A transmission shiftable to change transmission ratios by the operation of a member whose effectiveness depends upon a pressure fluid, e.g. through a valve communicating the fluid to actuators of the gear-change system, has a clutch connecting the output shaft of a prime mover as an internal-combustion engine with the input shaft of the transmission. According to the invention, the clutch-operating cylinder is connected by an entraining device with a valve controlling the pressure fluid. A lost motion may be provided between the operating member of the cylinder and the valve seats to ensure full opening of the clutch before operation of the transmission is enabled.

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