Protective envelope device for packaging fragile articles

Details Protective envelope device for packaging fragile articles Protective envelope device for packaging fragile articles

1985-09-30

1986-11-04

Moy, Joseph Man-Fu

Special receptacle or package

Shock protection type

Foamlike retainer

206524, 2065248, 53405, 53403, B65D 8120

Patent

active

046206337

ABSTRACT:
A unitary protective envelope device for packaging fragile articles has an outer wall and a conformable inner wall. A mass of compressed resilient open-celled cellular material is enclosed in the space between the walls and held in compressed condition under vacuum. The material upon exposure to atmospheric pressure expands, forcing the inner wall conformingly against articles in the envelope and converting the envelope into an impact-absorbing pod embracing and conforming closely to its contents. In one preferred embodiment a compressed slab of open-celled foam held in compressed condition in a vacuum-sealed sack positioned between the walls expands to embrace the contents of the envelope when the sack is punctured.

REFERENCES:
patent: 3130089 (1964-04-01), Mellinger
patent: 3464540 (1969-09-01), Stark
patent: 3503177 (1970-03-01), Kropscott et al.
patent: 3613879 (1971-10-01), Kemble
patent: 4193499 (1980-03-01), Lookholder
patent: 4401218 (1983-08-01), Erlichman
patent: 4411364 (1983-10-01), Friedman
patent: 4449632 (1984-05-01), Marosiak, Jr.

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