Pressurized container-dispensers and filling method
First Claim
1. In a pressurized container-dispenser of the type having a container body and a product chamber therein, valve means for controlling the dispensing of a product therefrom and means to pressurize the product chamber whereby to expel product through the valve means, the improvement wherein said pressurizing means comprises:
- a separate pressure source chamber within said container body;
a gas-adsorbent solid and a gas adsorbable thereon within said source chamber to provide a gas reserve whereby pressure in said source chamber is substantially reinforced despite a decrease in gas/volume in the source chamber; and
means to transmit pressure of the source chamber to the product chamber.
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Abstract
A pressurized container-dispenser characterized by a separate pressure source chamber containing a gas-adsorbent solid and an adsorbable gas and having means to transmit source chamber pressure to a product chamber for dispensing of a product therefrom. Preferred transmission means include a moveable wall separating the product and source chambers, a check valve, a constant pressure valve, and a membrane of the type allowing passage of gas but resisting passage of non-gaseous fluid. In a preferred embodiment the source chamber is defined by an enclosure of substantially fixed volume secured adjacent the product chamber. In another, the source chamber is defined by an unsupported enclosure free within the product chamber.
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Citations
37 Claims
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1. In a pressurized container-dispenser of the type having a container body and a product chamber therein, valve means for controlling the dispensing of a product therefrom and means to pressurize the product chamber whereby to expel product through the valve means, the improvement wherein said pressurizing means comprises:
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a separate pressure source chamber within said container body; a gas-adsorbent solid and a gas adsorbable thereon within said source chamber to provide a gas reserve whereby pressure in said source chamber is substantially reinforced despite a decrease in gas/volume in the source chamber; and means to transmit pressure of the source chamber to the product chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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Specification