US3756389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multiple compartment package with frangible internal barrier means
Assignee: Hexcel Corp
•
Filing: 1971-08-24
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Granted: 1973-09-04
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Expires: 1991-08-24
Abstract
Abstract A flexible package for storing multiple fluent materials in separate compartments and for ultimate mixing in the package, comprises: A. AN ENVELOPE AND BARRIER MEANS FORMING THE COMPARTMENTS AT OPPOSITE SIDES OF THE BARRIER MEANS, B. THE BARRIER MEANS COMPRISING AT LEAST ONE FRANGIBLE SHEET EXTENDING WITHIN THE ENVELOPE IN POSITION TO BE RUPTURED BETWEEN THE COMPARTMENTS IN RESPONSE TO MANUAL TENSION APPLICATION THERETO.
Inventors
- 👤 F Firth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:18
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; B65D81/3266
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
121 words
A flexible package for storing multiple fluent materials in separate compartments and for ultimate mixing in the package, comprising a. an envelope and a barrier sheet forming the compartments at opposite sides of the barrier sheet, b. the barrier sheet having a locally thinned section extending within the envelope in position to be ruptured at said section thinning between the compartments in response to manual tension application thereof, c. the barrier sheet defining externally accessible pull tabs in general alignment with said thinned section and at opposite ends of the barrier sheet, the local thinning extending transversely in the barrier sheet, and d. the envelope comprising plastic sheet sections confined at opposite sides of the barrier sheet and peripherally bonded thereto.
Claim 2
Dependent Claim
121 words
A flexible package for storing multiple fluent materials in separate compartments and for ultimate mixing in the package, comprising a. an envelope and a barrier sheet forming the compartments at opposite sides of the barrier sheet, b. the barrier sheet having a locally thinned section extending within the envelope in position to be ruptured at said section thinning between the compartments in response to manual tension application thereof, c. the barrier sheet defining externally accessible pull tabs in general alignment with said thinned section and at opposite ends of the barrier sheet, the local thinning extending transversely in the barrier sheet, and d. the envelope comprising plastic sheet sections confined at opposite sides of the barrier sheet and peripherally bonded thereto.
Claim 3
Dependent Claim
28 words
The package of claim 1 wherein the barrier consists of metallic foil. 3. The package of claim 1 wherein the barrier includes a sealable coating on the sheet.
Claim 4
Dependent Claim
15 words
The package of claim 1 wherein the barrier sheet consists of a sealable polymer film.
Claim 5
Dependent Claim
21 words
The package of claim 1 including said fluent materials in said compartments and consisting of resin components which polymerize after mixing.
Claim 6
Dependent Claim
23 words
The package of claim 1 wherein the barrier sheet comprises multiple parallel sheets extending between multiple envelope sections to form therewith multiple compartments.
Claim 7
Dependent Claim
22 words
The package of claim 1 wherein the edge portions of the envelope sections are turned inwardly for attachment to the barrier means.
References Cited (Backward Citations)
US2885104A
Cited
US3255872A
Cited
US3095291A
Cited
US3294227A
Cited
US3429429A
Cited
US3539794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |