Patent ID: 6655143
Filing Date: 2003-12-02
Classification: F15B

Abstract:
A ram, comprising:(a) a main body comprising an internal cavity; (b) a first piston slidingly mounted in said internal cavity and capable of movement therein; (c) a second piston at least partially mounted in said first piston; (d) an actuator mounted in said main body, said first piston being coupled to said actuator in a driving relationship, whereby movement of said first piston in said internal cavity causes displacement of said actuator with relation to said main body; (e) a fluid-pathway opening in said internal cavity for admitting pressurized working fluid to act on said first piston to move said first piston and displace said actuator; and (f) an explosive charge located within said ram, said explosive charge being adapted to detonate in response to application of an electric impulse thereto, a detonation of said explosive charge causing movement of said second piston thereby displacing said actuator relative to said main body, the displacement of said actuator being independent of the pressurized working fluid.