초록 ▼

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 pleat

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.

대표청구항 ▼

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 o

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.