Valve actuators

US4070002A · kind A · utility

Assignee

• Applications Mecaniques et Robinetterie Industrielle (A.M.R.I.) · FR

Inventor

• Maurice Bonafous · Gurmençon, FR

Key dates

• Filing date: Mar 17, 1976
• Grant date: Jan 24, 1978
• Expiry date: Mar 17, 1996

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/18992
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An actuator for a valve in which valve opening and closing is effected via a rectilinearly movable member having, at one end, a driving device and, at its other end, a return-movement arrangement. To-and fro movement of the member under the control of the driving device and return-movement arrangement opens or closes the valve, or vice versa. The return-movement arrangement includes a ramp connected to the member and a resilient energy storing cushion for acting oppositely to the driving device on the member with a bridging roller transmission rolling contacting the ramp so that, depending on direction of movement of the member, energy is either stored in or dissipated from the cushion.