초록 ▼

A keg (10) for a pressurized fluid is formed of a main body part (11), to respective open ends of which are secured upper and lower ends parts (14, 12), each of the three parts being an injection moulding of thermoplastics material and connected together by welding. Around an internal surface of the

A keg (10) for a pressurized fluid is formed of a main body part (11), to respective open ends of which are secured upper and lower ends parts (14, 12), each of the three parts being an injection moulding of thermoplastics material and connected together by welding. Around an internal surface of the main body part (11) is an integral continuous planar flange (21) which serves to resits outwards pressure on the body when the keg is pressurized, in use, the flange defining a large central opening (22) in the interior of the keg. Ribs (25) are formed integrally with the internal body surface and flange, and extend around the flange between respective pairs of first openings (23) through the flange, smaller second openings (24) being aligned with, and disposed at the inner end of the respective ribs.

대표청구항 ▼

[ I claim:] [1.] A container for pressurized fluid, in the form of a substantially closed, hollow body of thermoplastics material, said body comprising a one-piece main body part having on its internal surface at least one inwardly extending planar member, said inwardly extending member being rigid

[ I claim:] [1.] A container for pressurized fluid, in the form of a substantially closed, hollow body of thermoplastics material, said body comprising a one-piece main body part having on its internal surface at least one inwardly extending planar member, said inwardly extending member being rigid or substantially rigid, extending continuously around the internal surface of said one-piece main body part, formed integrally therewith, to resist outwards pressure on the body when the container is pressurized, in use, and having a free inner edge within the interior of the main body part.