Collapsible, spirally fluted container

Details Collapsible, spirally fluted container Collapsible, spirally fluted container

1974-06-25

1976-03-30

Hoffman, Drayton E.

Dispensing

Collapsible wall-type container

B65D 3508

Patent

active

039469034

ABSTRACT:
A container made of flexible, resilient material such as polyethylene has a wall formed into plural spirally extending flutes. The bottom of the container has an integrally formed inwardly directed cup-shaped protuberance for substantially completely expelling the contents when the container is collapsed. The spiral angle of the flutes is preferably 30.degree. and the flutes are inwardly directed and unobstructed at the top dispensing opening.

REFERENCES:
patent: 2723779 (1955-11-01), Parker et al.
patent: 3155281 (1964-11-01), Stracey
patent: 3295725 (1967-01-01), Brandt
patent: 3390821 (1968-07-01), Mullan
patent: 3740306 (1973-06-01), Kosbab et al.

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