Valve actuators
AssigneeApplications Mecaniques et Robinetterie Industrielle A.M.R.I.
InventorMaurice Bonafous
Life of this patent
Estimating the term…
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.
Claims10
An actuator for a valve comprising a rectilinearly movable, motion-transmitting member, a mechanical valve-operating system connected to said member and connectible to a valve, a driving device connected to said member to move same in one direction of valve operation, and a return-movement arrangement connected to said member to move it in an opposite and return direction of valve operation, the arrangement including a ramp connected to the member for movement therewith, a movable resilient energy storing cushion arranged about said ramp for effecting said return movemnt of the member and roller transmission means including a movable arcuate member continguous with the ramp and operatively associated with the cushion to effect movement thereof for energy storage and dissipation depending on the direction of movement of the output member.
Dependencies are inferred from the claim text.