Hermetically sealable collapsible container

Details Hermetically sealable collapsible container Hermetically sealable collapsible container

1974-09-19

1976-02-24

Norton, Donald F.

Purses, wallets, and protective covers

Protective cover made of flaccid material

For a racquet

150 5X, B65D 102

Patent

active

039398870

ABSTRACT:
A self-expandable, foldable and reusable container made of elastic material which is adapted to be collapsed progressively from top to bottom to a volumetric dimension substantially equal to the substance contained therein to minimize air space in the container. An air tight closure is tightened about an access opening in said container while the same is held in collapsed condition. The folds of said container are formed with sections of different geometry to effect progressive flexibility from the top to the bottom thereof.

REFERENCES:
patent: 2685316 (1954-08-01), Krasno
patent: 2899110 (1959-08-01), Parker
patent: 3027044 (1962-03-01), Winstead
patent: 3083877 (1963-04-01), Gash
patent: 3143429 (1964-08-01), Swanson
patent: 3199701 (1965-08-01), Santelli
patent: 3434589 (1969-03-01), Valtri
patent: 3547294 (1970-12-01), Williams
patent: 3586084 (1971-06-01), Redmond

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