Pressure regulating valve with feedback control

US4565209A · kind A · utility

Assignee

• Herion-Werke KG

Inventors

• Erich Ruchser · Weingarten, DE
• Helmut Ott · Stuttgart, DE

Key dates

• Filing date: Feb 9, 1984
• Grant date: Jan 21, 1986
• Expiry date: Feb 9, 2004

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/86919
• WIPO field: Control
• WIPO sector: Instruments

Abstract

The invention relates to a pressure regulating valve for pneumatic and hydraulic pressure media wherein a higher primary pressure is regulated to a desired lower secondary pressure. The valve comprises a primary connection, a secondary connection and a relief connection, there being a switch valve between the primary connection and the secondary connection, a relief valve between the secondary connection and the relief connection, and a control connection for controlling the operation of the valve in response to an external controlled quantity. The controlled quantity may be the secondary pressure output of the valve, or may be another pressure or a mechanical displacement of a larger system.