Patent · US Expired

Valve arrangement with main shifting valve and pilot control valve

US4796662A · kind A · utility

48Cited by

1References

16Claims

0Family size

Assignee

Daimler-Benz AG · DE

Inventors

Ruediger Hoffmann · Sindelfingen, DE
Dieter Feichtiger · Aidlingen, DE
Paul Schwerdt · Freudenstadt, DE

Key dates

Filing date	May 23, 1988
Grant date	Jan 10, 1989
Priority date	—
Expiry date	May 23, 2008

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87209
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A valve arrangement with a main shifting valve and a pilot control valve in which the main shifting valve controls the connection between an inlet line and an outlet line. Depending on the position of the pilot control valve, a control pressure space is connected with the inlet line and is therewith acted upon with the inlet pressure, respectively, is relieved of the pressure by a connection with an essentially pressureless return line in order to close, respectively, open the main shifting valve. As the inlet, outlet and return lines terminate on the same bottom side of the socket, the valve arrangement can be arranged in a particularly simple manner on a line plate of a hydraulic, respectively, pneumatic shifting arrangement.

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