The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jan. 10, 1989

Filed:

May. 23, 1988
Applicant:
Inventors:

Ruediger Hoffmann, Sindelfingen, DE;

Dieter Feichtiger, Aidlingen, DE;

Paul Schwerdt, Freudenstadt, DE;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F15B / ; F16K / ;
U.S. Cl.
CPC ...
13759616 ; 251 3002 ; 25112917 ;
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.


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