Container evacuation system

Details Container evacuation system Container evacuation system

2011-06-07

2011-06-07

Shaver, Kevin P (Department: 3754)

Dispensing

Collapsible wall-type container

With wall-collapsing means

C222S105000, C222S386500, C383S107000, C383S109000

Reexamination Certificate

active

07954670

ABSTRACT:
A container evacuation system is provided for viscous flowable materials such as grease, paste or flowable powders. The container system includes a lightweight, rigid exterior, such as a cardboard container. Provided within the container is a flexible containment system constructed of polyethylene sheets or the like. The flexible containment system is provided with a plurality of weldments to create at least two pockets, wherein one pocket contains the flowable material and a second pocket is available to be filled with air, to allow air provided to the second pocket to force the flowable material from the first pocket out through a drain. The system includes a weldment which curves around at least a portion of the drain to crease a funnel which focuses flowable material toward the drain, while reducing the likelihood of a portion of the flexible containment system from obstructing the movement of flowable material out of the first pocket through the drain.

REFERENCES:
patent: 3822806 (1974-07-01), Grimes
patent: 3936334 (1976-02-01), Kushida et al.
patent: 4796788 (1989-01-01), Bond
patent: 5096092 (1992-03-01), Devine
patent: 6120181 (2000-09-01), Wilcox
patent: 6234351 (2001-05-01), Wilcox
patent: 6627873 (2002-08-01), Wilcox
patent: 6467652 (2002-10-01), Wilcox et al.

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