Receptacles – Container attachment or adjunct – Pressure relief means
Patent
1985-04-11
1986-04-08
Shoap, Allan N.
Receptacles
Container attachment or adjunct
Pressure relief means
137 681, 222397, B65D 5116, B65D 8314, F16K 1714
Patent
active
045806900
ABSTRACT:
A pressure relief device for an internally pressurized container. The device is imperforate, forms an integral part of the container surface, and has a concave annular outer area integrally joined to an inwardly protruding circular central area by an annular intermediate area. These areas have different thicknesses resulting exclusively from the device having been drawn from a metal blank. The juncture of the annular outer and intermediate areas forms a first circular line of strain hardened material having a reduced thickness and increased hardness and strength as compared to the material thickness, hardness and strength of the annular outer area. The cross sectional configuration of the device is such that upon eversion thereof occasioned by an over-pressurization of the container contents, the material along the first circular line will fracture at at least one location, thereby allowing the container contents to escape therethrough.
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Sexton Can Company, Inc.
Shoap Allan N.
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