Accumulator changing valve

US4130127A · kind A · utility

Assignee

• ITT Industries · US

Inventors

• Ludwig Budecker · Frankfurt am Main, DE
• Anton David · Dreieich, DE

Key dates

• Filing date: Jun 3, 1977
• Grant date: Dec 19, 1978
• Expiry date: Jun 3, 1997

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T137/2594
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A valve is disclosed for connecting a user port with a pressure port or a return port as required. A closure member which is acted upon by a pressure piston is shifted from a first into a second valve position. By disposing a throttle in the return port, a balanced pressure is achieved on all sides of the closure member during a valve position change process so that the valve changes from the first into the second position safely and rapidly.