Patent ID: 9199707
Filing Date: 2015-12-01
Classification: B63G,F42B

Abstract:
1. A cable cutting system for a negatively buoyant underwater payload having a detachable buoyant section attached thereto by a cable, comprising: a pressurized gas cartridge; a nipple sealing an end of said cartridge; a punch disposed in proximity to said nipple in a passive position, said punch disposed through said nipple in an activated position; a piston in fluid communication with said cartridge when said punch is in said activated position, said piston movable under pressure from said gas; a cable cutter attached to said piston, said cutter movable with said piston toward and through the cable when said punch is in said activated position; an actuator having a passive configuration and an activated configuration, said passive position and said activated position of said punch corresponding respectively to said passive configuration and said activated configuration of said actuator; a manifold disposed between and in fluid communication with said cartridge and said piston; at least one port extending through an outer surface of the payload, said manifold further in fluid communication with said at least one port; and a check valve disposed at each said at least one port, said valve being closed to flow in a direction from the outer surface into said manifold.