Receptacles – Closures – Having means for securing or retaining closure in its closed...
Patent
1979-03-05
1981-12-01
Hall, George T.
Receptacles
Closures
Having means for securing or retaining closure in its closed...
29225665, B65D 8546
Patent
active
043031773
ABSTRACT:
A closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.
REFERENCES:
patent: 3568379 (1971-03-01), Johnsson et al.
patent: 3667649 (1972-06-01), Thillet
patent: 4102474 (1978-07-01), Platts
patent: 4140240 (1979-02-01), Platts
Hall George T.
The United States of America as represented by the United States
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