Housings with safety pressure relief means thereon

Details Housings with safety pressure relief means thereon Housings with safety pressure relief means thereon

1991-05-28

1993-03-09

Shoap, Allan N.

Receptacles

Closures

With condition responsive vent or valve

220 892, 220203, 220208, 220328, 220346, 220366, 220745, 174 11R, 411 9, 411 34, 403 2, 403337, 4034081, B65D 5116

Patent

active

051919915

ABSTRACT:
A fastening which allows a bolted-on cap to part from a body when excessive pressures develop in a cavity in the body, comprises a nut and bolt arrangement, and includes a weakened tubular spacer surrounding each bolt, between the bolt head and the cap. The wall of the spacer is drilled or scored in its mid-length area. The material and proportions of the spacer, and the proportions of the score or drilling, are so matched in relation to a particular pressure environment, that on excessive pressure developing, the load exerted on the cap causes the spacer to collapse in controlled manner, rather than merely crushing or breaking.

REFERENCES:
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patent: 1729085 (1929-09-01), Pofeldt
patent: 2742770 (1956-04-01), Graham
patent: 2918941 (1959-12-01), Whiting
patent: 2922544 (1960-01-01), Hibbard et al.
patent: 2980286 (1961-04-01), Coffman
patent: 3439831 (1969-04-01), Pullen
patent: 3704807 (1972-12-01), Lidgard
patent: 4029233 (1977-06-01), Widenhofer
patent: 4453488 (1984-06-01), Watchorn
patent: 4692076 (1987-09-01), Herb
patent: 4793509 (1988-12-01), Coleman
patent: 4875815 (1989-10-01), Phillips, II
patent: 4905722 (1990-03-01), Rooker et al.
patent: 4954018 (1990-09-01), Gauna
patent: 5012945 (1991-05-01), Keenan

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