Patent ID: 9353910
Filing Date: 2016-05-31
CPC Classification: F17C,Y02E

Claim Text:
1. A composite pressure container for fluids, comprising an inner fluid-tight liner layer and a pressure supporting layer formed by winding fiber-reinforcement onto the liner layer, as well as at least a central opening in one end provided with a boss and a coupling or valve member, the boss is adapted for mounting the coupling or valve member, and comprises mounting means adapted to receive the coupling or valve member, wherein the coupling or valve member comprises at least one O-ring on an engaging surface for engagement with the mounting means, wherein the boss comprises an embedded member at least embedded towards the inside of the pressure container, and wherein the boss comprises a lip arranged to be positioned between the embedded member and the engaging surface of the coupling or valve member, wherein the radial thickness D of the lip is proportional with the test pressure for which the container is intended, wherein the Shore A hardness H of the at least one O-ring is: 70≦H≦90, the material diameter d in mm of the at least one O-ring is: 1≦d≦6, the maximum radial thickness Dmax of the lip in mm is: −0.0005 mm/bar*p+3.005 mm, wherein p=test pressure in bar, and the radial thickness D of the lip is Dmin≦D≦Dmax, wherein Dmin=minimum radial thickness of the lip in mm and Dmin=−0.000125 mm/bar*p+0.35 mm.