US3828977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compartment bag assembly for dispensing containers
Assignee: Continental Can Co Inc
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Filing: 1972-06-14
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Granted: 1974-08-13
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Expires: 1992-06-14
Abstract
Abstract A product dispensing container of the type including a collapsible product containing a bag assembly which is disposed within a rigid container and defines a chamber therein. The chamber is filled with a propellant. A valve dispensing means communicates with the bag assembly for discharging the product therefrom under the force of the propellant. The product containing bag assembly includes a compartment bag constructed so as to be only axially collapsible when subjected to the radial and axial forces of the propellant. The bag assembly further includes a barrier bag or sheath which encloses the compartment bag. The barrier bag is made from an impermeable film material and is flexible so as not to influence the axial collapse of the compartment bag.
Inventors
- 👤 J Borchert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:51
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; B65D83/62
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
In a product dispensing container having a pressurized container body including a base and a top closure at axially opposite ends of said body, a dispensing valve carried by said top closure, and a collapsible product dispensing bag assembly disposed in the interior of said container body and defining with said container body a propellant chamber charged with a pressurized propellant, said bag assembly comprising a productcontaining compartment bag having a plurality of lengthwise spaced fold sections so as to be axially collapsible, and a nondispensing closed gas filled tubular sheath attached to and enclosing said compartment bag for transmitting pressure from the propellant chambers to the compartment bag, said tubular sheath being made from an impermeable film to provide a barrier between said compartment bag and said propellant chamber and maintaining the initial quantity of gas therein during the entire operating period, to maximize dispensing of the product contained in said bag assembly.
Claim 2
Dependent Claim
154 words
In a product dispensing container having a pressurized container body including a base and a top closure at axially opposite ends of said body, a dispensing valve carried by said top closure, and a collapsible product dispensing bag assembly disposed in the interior of said container body and defining with said container body a propellant chamber charged with a pressurized propellant, said bag assembly comprising a productcontaining compartment bag having a plurality of lengthwise spaced fold sections so as to be axially collapsible, and a nondispensing closed gas filled tubular sheath attached to and enclosing said compartment bag for transmitting pressure from the propellant chambers to the compartment bag, said tubular sheath being made from an impermeable film to provide a barrier between said compartment bag and said propellant chamber and maintaining the initial quantity of gas therein during the entire operating period, to maximize dispensing of the product contained in said bag assembly.
Claim 3
Dependent Claim
21 words
The invention as defined in claim 1 wherein said tubular sheath is attached to the upper end of said compartment bag.
Claim 4
Dependent Claim
21 words
The invention as defined in claim 2 wherein said tubular sheath is attached to said compartment bag by a heat seal.
Claim 5
Dependent Claim
32 words
The invention as defined in claim 3 wherein said compartment bag is made from plastic, and wherein said tubular sheath is made from a laminate having at least one layer of plastic.
Claim 6
Dependent Claim
15 words
The invention as defined in claim 4 wherein said laminate includes a metal foil layer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |