Pressurized containers and methods for filling them
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United States of America Patent
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Aug 24, 2010
Grant Date -
Aug 7, 2008
app pub date -
May 26, 2007
filing date -
Feb 2, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
According to a first aspect of the invention a can manufacturer completes manufacture of a can and then ships it to a filler, who needs only to fill the can with product. In a preferred embodiment the manufacturer pre-charges the container with a propellant. In accordance with a second aspect of the invention a desired quantity of gaseous propellant is first charged into a container, and a desired quantity of product is then injected into the container. A container filled in accordance with the invention maintains a predetermined pressure in the container as product is depleted from the container, and unacceptable pressure spikes are avoided as the container is being filled.
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