Patent · US Expired

Control valve for a hydraulic switch clutch

US5123509A · kind A · utility

1Cited by

3References

4Claims

0Family size

Assignee

Ford Motor Company · US

Inventors

Dieter Wolf · Dorsten, DE
Elmar Roeseling · Cologne, DE

Key dates

Filing date	May 20, 1991
Grant date	Jun 23, 1992
Priority date	—
Expiry date	May 20, 2011

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H61/068
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

Hydraulic pressure representing engine throttle position is applied to a valve spool having two control surfaces. In opposition to the force of a control spring, a pressure line, which opens to the valve chamber between the two control surfaces, carries regulated line pressure through a flow orifice in a first connecting line and through an aperture stop in a second connecting line. The flow orifice of the first connecting line is arranged in parallel with an aperture of the second connecting line, both the first and second connecting lines being connected directly to the valve chamber.

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