Patent ID: 7295491
Filing Date: 2007-11-13
Classification: E21B

Abstract:
1. An actuator for propagating an impulse shock of controlled energy into an energy confinement structure extending along a substantial length, to deliver an actuating impulse to a remote location within the structure comprising: a pressure vessel for storing a pressurized gas; a variable volume gas chamber in controlled communication with the pressure vessel, the chamber having a volume and pressure that are selectively variable within a range; a flow control valve in communication with the chamber, and coupled to release gas pressure therefrom; means defining an outlet orifice coupled to said flow control valve for emitting the released gas pressure in a selected propagation direction; and triggering means coupled to the flow control valve for controlling the impulsed release of gas for a selected duration from the chamber, the duration being of the order of milliseconds, whereby the energy of the pulse shock can be adjusted in correspondence to the chamber volume and the duration of the impulse.