Patent ID: 7549555
Filing Date: 2009-06-23
Classification: F17C,Y02E

Abstract:
1. A pressure container comprising: a hollow container body whose inner surface is coated with a resinous liner and which has an opening at one end thereof; and an opening metal attached at a circumferential edge of the opening so as to protrude from the container body, the opening metal having a flange that extends in a radial direction of the container body, wherein the liner has a self-sealing part abutting with the flange for sealing and a ring groove, which opens radially outward; a ring-shaped constraint member is provided around the self-sealing part and is accommodated within the ring groove so as to restrict an expansion of the liner to be caused by an expansion of the container body; the constraint member is formed of a fiber reinforced plastic filament winding; and the constraint member is located on an outer side of the self-sealing part in the radial direction such that the flange is not located between the constraint member and the self-sealing part.