ApplicationNo. 06/230577 filed on 02/02/1981
US Classes:102/223, Fluid pressure operated102/229, Rotor or slide102/414, Hydrostatic pressure102/416, Igniting means294/82.28, Plurality of balls294/82.29, Explosive release89/27.12Safety
ExaminersPrimary: Brown, David H.
Attorney, Agent or Firm
International ClassesF42B 3/00 (20060101)
B63B 21/56 (20060101)
B63B 21/60 (20060101)
F42C 14/04 (20060101)
F42C 14/00 (20060101)
AbstractAn improved release apparatus, including an actuator device, a release dee and a firing device, releases the firing device in a water environment and not in an air environment when the actuator device is remotely actuated. When in a water environment, a predetermined gas pressure from the actuator device drives forward a pusher piston and valve sleeve arrangement, disposed in a water chamber of the release device, initially to close off lower entry/exit orifices in the water chamber by action of the valve sleeve, and then to compress an entrapped column of water to a predetermined water pressure sufficiently to cause shearing off of an annular lip of a ball lock piston thereby separating the firing device from the release device. When in an air environment, the pressure from a compressed entrapped air column is not sufficient to cause shearing off or folding down of the annular lip of the ball lock piston, and, accordingly, the release apparatus is safed.