Patent ID: 8485261

Claim:
An apparatus adapted for operating in a submerged fluid environment, comprising: a housing defining a chamber, the chamber being sealed from an exterior of the housing, wherein the housing further defines an opening in fluid communication with the chamber and the exterior of the housing; a valve in fluid communication with the opening and positioned between the chamber and the exterior of the housing; a member at least partially positioned within the chamber and moveable relative to the housing such that opening of the valve allows a fluid to enter the chamber from the exterior of the housing and move the member; an engagement member secured to the housing , wherein the engagement member defines a bore which extends within the engagement member within which the member moves, defines at least one vent opening, and defines another opening positioned at a distal end of the engagement member in fluid communication with the bore and the exterior of the housing such that the member in a first position unblocks the at least one vent opening and in a second position blocks the at least one vent opening; and at least one seal positioned between the engagement member and the member such that the seal and the member prevent a pressurized fluid located within the engagement member from moving beyond the at least one seal toward the housing.