Dispensing – Collapsible wall-type container – With wall-collapsing means
Patent
1975-01-27
1976-02-17
Tollberg, Stanley H.
Dispensing
Collapsible wall-type container
With wall-collapsing means
222192, 239323, B65D 3528
Patent
active
039387089
ABSTRACT:
An aerosol dispensing system having an outer container, compressible inner container positioned within the outer container, means to compress the compressible container, and a mechanical breakup spray head and valve assembly connected to the compressible container. A relatively non-foaming liquid product is present at a pressure above atmospheric pressure within the compressible container as well as a neutral propellant or mixture of propellants which are in a liquid state and are at least partially soluble or miscible in the liquid product. A second propellant may be present in a propellant region between the compressible container and outer container with the second propellant exerting a differential pressure across the compressible container which is sufficient to eject the product and neutral propellant through the mechanical breakup spray head on opening of the valve assembly. The neutral propellant is present in a relatively small amount, e.g., about 25 percent or less by volume of the volume of the product and neutral propellant and generally about 10 percent or less with the neutral propellant being at least partially vaporized at atmospheric pressure or less on passage of the product and neutral propellant through the spray head to create a turbulence within the spray head which provides a breaking up of the liquid product into a fine spray.
An aerosol dispensing system with a mechanical breakup spray head and valve assembly connected to compressible container positioned within an outer container with a finely divided powder product at a pressure above atmospheric pressure within the container. Also present within the compressible container is a liquified neutral propellant in an amount sufficient to form a slurry with the product and to carry the product into the spray head during discharge of the product. The neutral propellant is at least partially vaporized at atmospheric pressure or less on passage of the product and neutral propellant through the spray head to create turbulence within the spray head.
REFERENCES:
patent: 2823953 (1958-02-01), McGeorge
patent: 3207386 (1965-09-01), Presant et al.
patent: 3402665 (1968-09-01), Tarpley, Jr. et al.
patent: 3460714 (1969-08-01), Mace
patent: 3547854 (1970-12-01), Roth et al.
patent: 3554771 (1971-01-01), Wiczer
Burger Norman D.
Lane Hadd
Mardesich Nicholas
Smyth George F.
Tollberg Stanley H.
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