Patent ID: 6220196
Filing Date: 2001-04-24
Classification: B63G,F41F

Abstract:
A water discharge device for launching objects from a submerged structure having a pressure hull, an outer hull with an opening therein, and an impulse tank, the impulse tank being a closed and sealed space, the water discharge device comprising:a hydraulic ram;a pneumatic ram, coupled to the hydraulic ram, the pneumatic ram acting on the hydraulic ram to drive water into the impulse tank;wherein the impulse tank is immovably located in the outer hull and the pneumatic ram and the hydraulic ram are removably mounted so that they can be placed in the impulse tank thereby sealing the impulse tank or be disassociated from the impulse tank, by passing the water discharge device through the opening and sealing the water discharge device in the opening without maintenance work on the hull.