Patent ID: 7578312
Filing Date: 2009-08-25
Classification: F16L,Y10T

Abstract:
1. A female undersea hydraulic coupling member comprising: a generally cylindrical body having a first end and a second end; a central axial bore extending from the first end to the second end of the body; a receiving chamber in the first end of the body dimensioned to receive an opposing coupling member; a generally cylindrical water displacement expansion chamber in the second end of the body offset from the central axial bore; a fluid passageway in the body connecting the receiving chamber and the water displacement chamber; a piston positioned in the water displacement chamber, the piston having a front face and a rear face, the piston slideable in response to pressure acting against the front face and rear face to allow fluid and/or gas to move between the receiving chamber and the water displacement expansion chamber; and, a seal between the piston and the water displacement expansion chamber to block fluid flow through the expansion chamber.