Patent ID: 6220142
Filing Date: 2001-04-24
Classification: F15B

Abstract:
An operation actuation device for emergency actuation of a hydraulically controlled actuator, comprising:a housing having a fluid container with an actuator connection point and a hydraulic circuit connection point;a separating piston guided for longitudinal sliding movement in said housing between first and second end settings;a manually operable adjusting setscrew coupled to and controlling movement of said piston in said housing, said setscrew being threadedly engaged with said housing and axially movable relative to said housing to move said piston between said end positions; anda through-flow opening in said piston controlled by a control check valve therein and providing controlled fluid communication between said connection points, said check valve being opened in said first end setting by engagement with a part of said housing and being closed in said second end setting by being spaced from said part of said housing.