| 摘要 |
PCT No. PCT/DK79/00005 Sec. 371 Date Oct. 17, 1980 Sec. 102(e) Date Oct. 17, 1980 PCT Filed Feb. 22, 1979 PCT Pub. No. WO80/01831 PCT Pub. Date Sep. 4, 1980.Cover for a cylinder-shaped pressure container such as a vacuum impregnation container or an autoclave which at the mouth edge has members for holding a tight fitting closure member against the mouth edge which members contrary to previously known and complicated members can be manufactured by means of generally known working processes and machine tools. The mouth edge of the container (1) and the closure member (3) both have a radially outwards directed annular flange (2,4) which flanges have cooperating contact faces (5) and each a sloping surface, whereby the width of the two flange members (2,4) is decreasing towards the outer edge. The cover further comprises a retaining ring (6) which is placed close to the flange members (2,4) and which is ended up by two free ends (8). The retaining ring (6) has a slot (7) which is open towards the center and corresponding to the cross section of the flange members (2,4), and the circumference of the retaining ring (6) is similar to the outer circumference of the flanges (2,4) so that the free ends of the ring (6) can be pulled towards each other, when the flange members (2,4) are assumed in the slot (7) of the ring (6). The free ends (8) of the retaining ring (6) can be connected to driving means (9) of a hydraulic type for the closing of the retaining ring (6) around the flange members (2,4).
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