Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1995-06-06
1996-11-05
Kashnikow, Andres
Dispensing
Collapsible wall-type container
With wall-collapsing means
222105, 222389, B65D 3528
Patent
active
055708153
ABSTRACT:
A chemical delivery system comprising a collapsible, container, such as a storage bag, positioned within a pressure vessel for providing delivery of a chemical fluid includes an inlet port on the uppermost portion of the storage bag and a withdrawal tube extending from the lowermost portion of the storage bag to its top. The withdrawal tube, which is made of the same material as the storage bag, is routed alongside, or within the storage bag, from the bottom to a point above the top. In one embodiment, the storage bag is carried within an rigid pressure vessel and the withdrawal tube is carried through a wall of the vessel without the use of inline fittings. In an alternate embodiment, the storage bag is secured within a less flexible bag, which provides a pressurizing receptacle. A filter and pump, both made of the same material as the storage bag are also welded in the withdrawal tube, and the pump comprises a pump storage bag within a pressure receptacle, preferably an outer less flexible bag, to facilitate pressurizing the pump storage bag and thereby pump its chemicals from the dispense tube.
REFERENCES:
patent: 4147278 (1979-04-01), Uhlig
patent: 4993594 (1991-02-01), Becker et al.
patent: 5195655 (1993-03-01), Biskhman
Derakshani Philippe
International Business Machine Corp.
Kashnikow Andres
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