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US 3,939,887 AGranted
Hermetically sealable collapsible container
OwnerThomas J. Scarnatoinventor
Life of this patent
Estimating the term…
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.
Claims17
A reusable plastic container comprising:
- a self-expanding pleated cylindrical body having an access opening at the top and a base at the bottom thereof;
- said body comprising a plurality of folds disposed between said top and base and having upper and lower converging portions;
- and each fold characterized by increased rigidity from the upper to the lower portions thereof whereby upon pressure being applied to the top of said container, said body will collapse progressively from the top to the bottom thereof.
A reusable plastic container comprising:
- a self-expanding pleated cylindrical body having an access opening at the top and a base at the bottom thereof;
- said body comprising a folded portion having upper and lower converging segments;
- said folded portion spiraled about said body in the form of a helix from the top to the base thereof;
- and said upper and lower segments becoming continually and progressively thicker from the top of said container toward the bottom thereof whereby said folded portion becomes increasingly rigid from the top of the container to the bottom thereof to effect a progressive collapse from the top to the bottom of said container upon pressure being applied to the top thereof.
1 more element
A resuable plastic container comprising;
- a pleated cylindrical body having an access opening at the top and a base at the bottom thereof;
- said body comprising a plurality of pleats successively connected from the top of said container to the base thereof, and each pleat having upper and lower converging portions;
- and each upper portion of a particular pleat being more flexible than the corresponding lower portion, and each pleat having less flexibility than one thereabove whereby said pleats progressively collapse from top to bottom of said container upon a load being applied to the top thereof.
Dependencies are inferred from the claim text.