Pressure relief valve for packing containers

Details Pressure relief valve for packing containers Pressure relief valve for packing containers

1978-02-10

1979-01-16

Weinstein, Steven L.

Envelopes, wrappers, and paperboard boxes

File folder or file envelope

Hanging type

137251, 220205, 220374, 229DIG14, 426118, B65D 3114, F16K 900

Patent

active

041345355

ABSTRACT:
A pressure relief valve for packages in which the valve element comprises a liquid impregnated porous element covering outlet openings in the package, with the liquid layer in the porous element being torn open by package contents pressures in excess of a predetermined value to permit gas outflow from the package.

REFERENCES:
patent: 2361344 (1944-10-01), Yates
patent: 2870954 (1959-01-01), Kulesta
patent: 3088255 (1963-05-01), Griem
patent: 3672915 (1972-06-01), Wiggins
patent: 3799427 (1974-03-01), Goglio
patent: 4000846 (1977-01-01), Gilbert

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