Closure member

Details Closure member Closure member

1975-05-27

1978-07-25

Marcus, Stephen

Receptacles

Closures

Having means for securing or retaining closure in its closed...

29225665, B65D 4528

Patent

active

041024745

ABSTRACT:
A closure member for a pipe or pressure vessel, comprising a door adapted to fit an aperture in the body of the pipe or pressure vessel, a plurality of blocks slidably mounted adjacent the periphery of the door and movable from a position at least substantially wholly within the said periphery to a position in which a part of each block protrudes beyond the periphery for engagement with the said body, the said parts in the blocks together forming a protrusion extending substantially entirely round the periphery of the door, and means for moving the blocks from the withdrawn to the protruding position.

REFERENCES:
patent: 2797948 (1957-07-01), Tangard
patent: 2955452 (1960-10-01), Myers
patent: 3084828 (1963-04-01), Davies
patent: 3298794 (1967-01-01), Mikesell, Sr. et al.
patent: 3481503 (1969-12-01), Kloess et al.
patent: 3605337 (1971-09-01), Rodgers
patent: 3667649 (1972-06-01), Thillet

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