EP0178573A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A pressure fluid dispenser and method of making the same
Assignee: Exxel Container Inc
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Filing: 1985-10-08
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Granted: —
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Expires: 2005-10-08
Abstract
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 filled to capacity with a fluid, pressure is maintained on the bag by an energy tube. As the fluid from 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.
Inventors
- 👤 Hyman Katz
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 09:07
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/771; B65D83/7711
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
73 words
A dispenser for dispensing a pressurized fluid comprising: a. an enclosure; b. a bag assembly housed in said enclosure and having: (i) a flexible bag for holding said fluid; (ii) valve means mounted on said bag for selectively releasing the contents of the bag; (iii) a flexible coating applied to said bag; (iv) an energy tube substantially enclosing said bag for maintaining said bag pressurized; and c. actuator means for activating said valve.
Claim 2
Dependent Claim
73 words
A dispenser for dispensing a pressurized fluid comprising: a. an enclosure; b. a bag assembly housed in said enclosure and having: (i) a flexible bag for holding said fluid; (ii) valve means mounted on said bag for selectively releasing the contents of the bag; (iii) a flexible coating applied to said bag; (iv) an energy tube substantially enclosing said bag for maintaining said bag pressurized; and c. actuator means for activating said valve.
Claim 3
Dependent Claim
49 words
The dispenser of claim 1 wherein said bag has a plurality of longitudinal pleats defined by alternating crests and valleys, and said flexible coating is provided with longitudinal ribs corresponding to said pleats provided to force said bag to collapse in a controlled manner as fluid is ejected therefrom.
Claim 4
Dependent Claim
105 words
A bag for a pressurized fluid dispenser comprising: a. a tubular flexible bag having a plurality of longitudinal crests and valleys defining pleats whereby said tube is foldable into a very small volume and adapted to expand its volume when pressurized fluid is injected therein; b. a flexible and expandable coating applied to said bag, said coating having an even thickness substantially all over the bag except at said valleys where the coating is formed in a bead which forces said bag to fold along said pleats when it is depressurized; and c. an energy tube substantially surrounding said bag for keeping said bag pressurized.
Claim 5
Dependent Claim
105 words
A bag for a pressurized fluid dispenser comprising: a. a tubular flexible bag having a plurality of longitudinal crests and valleys defining pleats whereby said tube is foldable into a very small volume and adapted to expand its volume when pressurized fluid is injected therein; b. a flexible and expandable coating applied to said bag, said coating having an even thickness substantially all over the bag except at said valleys where the coating is formed in a bead which forces said bag to fold along said pleats when it is depressurized; and c. an energy tube substantially surrounding said bag for keeping said bag pressurized.
Claim 6
Dependent Claim
44 words
The assembly of claim 3 wherein said coating is made of a material which has sufficient viscosity and density to form an evenly thin surface on the bag when said bag is dipped in said latex with beads being formed at the pleat valleys.
Claim 7
Dependent Claim
22 words
The assembly of claim 4 wherein said coating material is selected from a group consisting of pre-vulcanized natural rubber or synthetic isoprene.
Claim 8
Dependent Claim
14 words
The assembly of claim 4 wherein said material is a 5-gram dry weight latex.
Claim 9
Dependent Claim
31 words
The assembly of claim 4 wherein said coating has a relatively rough outer surface to prevent the longitudinal slipping of the energv tube during the inflation and deflation of the bag.
Claim 10
Independent Claim
52 words
A method of producing a bag for a pressurized fluid dispenser comprising: forming a bottle-shaped bag of a flexible material; pleating said bag longitudinally so that it may be collapsed into a compact shape; and dipping said bag into a bath of a latex material to form a coating on said bag.
Claim 11
Independent Claim
52 words
A method of producing a bag for a pressurized fluid dispenser comprising: forming a bottle-shaped bag of a flexible material; pleating said bag longitudinally so that it may be collapsed into a compact shape; and dipping said bag into a bath of a latex material to form a coating on said bag.
Claim 12
Dependent Claim
35 words
The method of claim 8 wherein said latex material has sufficient density and viscosity to form longitudinal beads corresponding to the bag pleats for folding said bag along said pleats as said bag is collapsed.
Claim 13
Dependent Claim
19 words
The method of claim 9 further comprising drying said bag after dipping to allow said coating to dry evenly.
Claim 14
Dependent Claim
16 words
The method of claim 8 wherein said bottle shaped bag is , formed by blow molding.
References Cited (Backward Citations)
No citation records indexed.
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