Patent ID: 8448808
Filing Date: 2013-05-28
Classification: F17C

Abstract:
1. A pressure vessel, comprising: a resin liner defining an interior for receiving gas or liquid and provided with a tubular extension defining a through hole therein for receiving and expelling the gas or liquid into and out of the interior of the resin liner, the tubular extension being formed with a male thread around an outer circumferential surface thereof; a tubular member made of a stiffer material than the resin liner, and having a central bore and fitted in the through hole of the tubular extension; a mouthpiece having a female thread formed on an inner circumferential surface thereof for a threadable engagement with the male thread of the tubular extension; a fiber reinforced resin layer placed around an outer surface of the resin liner; and a valve fitted into the central bore of the tubular member; wherein the valve includes a section having a smaller outer diameter than an opposing inner circumferential surface of the tubular member defining a gap between the valve and tubular member, and a resilient seal member is placed in the gap, and wherein an outer circumferential surface of the tubular member is formed with an annular projection received in a material of the tubular extension.