Safety device

Details Safety device Safety device

1979-01-10

1981-01-20

Shoap, Allan N.

Receptacles

Container attachment or adjunct

Pressure relief means

73334, 116276, 137 68R, 137559, 220 89A, B65D 2554, F16K 1740

Patent

active

042457491

ABSTRACT:
A safety device for a pressure vessel having an opening therein in which is positioned an upstanding base secured around the vessel opening with a frangible diaphragm covering the opening. A protective cap covers the base with the frangible diaphragm and has a central aperture therein covered by a transparent material providing continuous visibility of the frangible diaphragm. The protective cap has an internal annular seat to retain the frangible diaphragm in place and spaced apart fasteners maintain the cap fixedly connected to the base.

REFERENCES:
patent: 424188 (1890-03-01), Eareckson
patent: 1205443 (1916-11-01), Elkins
patent: 2123662 (1938-07-01), Raymond
patent: 3199488 (1965-08-01), Farr
patent: 3310197 (1967-03-01), Folmsbee et al.
patent: 3435984 (1969-04-01), Damiani
patent: 3672749 (1972-06-01), Roser

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