US3989165A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compartment bag for aerosol container
Assignee: Continental Can Co Inc
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Filing: 1974-11-14
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Granted: 1976-11-02
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Expires: 1994-11-14
Abstract
Abstract An aerosol container having a propellant means and a flexible product bag enclosed within a flexible deformable plastic container such as polyethylene. The propellant causes the product in the bag to discharge which reduces the volume of the product in the enclosing container thus reducing the pressure of the gas within the container to subatmospheric pressure. This collapses the container and is an indication that the contents have been used.
Inventors
- 👤 Fred B. Shaw
- 👤 Clyde F. DuPuis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
B; B65; B65D; B65D83/00; B65D83/14; B65D83/60; B65D83/62; B65D83/66
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
An aerosol container comprising a collapsible outer shell, a flexible product containing bag therein, means for dispensing the product operatively connected to the bag, means for exhausting the product from the bag through said dispensing means, said shell defining a gas filled chamber encompassing said product bag, means hermetically sealing said container with said bag therein whereby upon said product being withdrawn from said bag subatmospheric pressure develops in said chamber causing said shell to collapse after each discharge whereby serving as indicating means of prior product use.
Claim 2
Dependent Claim
88 words
An aerosol container comprising a collapsible outer shell, a flexible product containing bag therein, means for dispensing the product operatively connected to the bag, means for exhausting the product from the bag through said dispensing means, said shell defining a gas filled chamber encompassing said product bag, means hermetically sealing said container with said bag therein whereby upon said product being withdrawn from said bag subatmospheric pressure develops in said chamber causing said shell to collapse after each discharge whereby serving as indicating means of prior product use.
Claim 3
Dependent Claim
17 words
An aerosol container according to claim 1, wherein said shell if formed of a gas permeable plastic.
Claim 4
Dependent Claim
11 words
The invention according to claim 2 wherein said plastic is polyethylene.
Claim 5
Dependent Claim
18 words
The invention according to claim 1, wherein said product exhausting means for aspirating the product from the bag.
Claim 6
Dependent Claim
18 words
The invention according to claim 4 wherein said bag is formed of plastic material having high barrier properties.
Claim 7
Dependent Claim
11 words
The invention according to claim 5 wherein said material is Saran.
Claim 8
Dependent Claim
48 words
The invention according to claim 2 wherein said plastic is self recoverable to its original shape as the air is drawn into the shell, said plastic serving as means for metering a predetermined amount of air into the container equal in volume to that of the displaced product.
Claim 9
Dependent Claim
17 words
The invention according to claim 1 wherein the gas in the chamber is inert to the product.
Claim 10
Dependent Claim
23 words
The invention according to claim 8 wherein said volumetric space of the chamber containing gas is greater than the volume of the product.
Claim 11
Dependent Claim
33 words
The invention according to claim 1 wherein said means for exhausting the product comprises a cartridge of high pressure gas operatively connected to said dispensing means for aspirating the product from said bag.
References Cited (Backward Citations)
US3602397A
Cited
US3730437A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |