Patent ID: 9441790
Filing Date: 2016-09-13
CPC Classification: B65D,F16J,F17C,Y10T

Claim Text:
1. An assembly including: a compressed gas cylinder having a neck with a top surface around a gas outlet and a side surface extending downwardly from the top surface, the gas cylinder containing a gas under a pressure of 1000 to 3500 psi that is releasable from the cylinder through the gas outlet; and a gasket attached to the neck of the gas cylinder, the gasket including: an upper portion made of an elastomeric material and including a radially extending portion that defines a face and is positioned on the top surface of the gas cylinder; and a lower portion having a ring including a rigid material that extends around the neck of the gas cylinder, the ring extending over a part of the side surface of the neck below the top surface of the neck and extending above the top surface of the neck to support portions of the upper portion above the top surface against extrusion, the face of the upper portion being exposed and uncovered by the ring, wherein the radially extending portion of the upper portion is arranged to engage and form a gas-tight seal with the top surface of the gas cylinder to resist gas leakage past the seal with a gas exiting the gas outlet at a pressure of 1000 to 3500 psi.