Pressurized fluid dispenser and method of making the same
AssigneeExxel Container, Inc.
InventorHyman Katz
Life of this patent
Estimating the term…
Abstract
In a dispenser of the kind used for dispensing a fluid by applying pressure on a container, a bag assembly is provided with a tubular pleated bag, a ribbed coating being formed over the bag by dipping. After the bag is selectively discharged causing the bag to collapse, the bag folds along the pleats under the influence of the coating until substantially all of the fluid has been removed. The assembly is made by forming the bag into a pleated shape and then dipping the bag into a suitable material to form a coating with beads. After the coating dries the bag is inserted into the energy tube.
Claims10
An apparatus for containing and dispensing a pressurized fluid, comprising:
- an expandable bag having a generally cylindrical shaped outer wall, said bag having a closed end and an open end, said outer wall including a plurality of substantially longitudinal pleats, said pleats defining a plurality of peaks and valleys;
- valve means coupled with said open end for selectively releasing the contents of the bag;
- an expandable energy tube substantially surrounding said bag for maintaining pressure on the bag and its contents;
- a plurality of expandable longitudinal ribs disposed in said valleys of said pleats and at least partially filing said valleys, said longitudinal ribs controlling refolding of the pleats in the bag as fluid is released from the bag.
An apparatus for containing and dispensing a pressurized fluid, comprising:
- an enclosure;
- an expandable bag inserted in said enclosure, the bag comprising a generally cylindrically shaped outer wall, said outer wall having a closed end and an open end, said open end defining a mouth through which the fluid may pass, the outer wall of the bag having a plurality of pleats extending from adjacent the mouth to adjacent the closed end such that the bag may be expanded from a contracted pleated position to an expanded position when the fluid is introduced into the bag, said plurality of pleats defining a plurality of peaks and valleys;
- a cap secured to said mouth and including a central orifice;
- valve means disposed in the central orifice of the cap for selectively releasing said pressurized fluid;
- an energy tube for maintaining pressure on the bag and said fluid, said energy tube surrounding the bag and extending longitudinally from adjacent said mouth to adjacent said closed end;
- an expandable longitudinal rib disposed in the bottom of each of said valleys and at least partially filling each of said valleys for controlling refolding of the pleats as fluid in said bag is removed.
Dependencies are inferred from the claim text.