US3580464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed composite container
Assignee: Automated Container Corp
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Filing: 1969-03-17
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Granted: 1971-05-25
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Expires: 1989-03-17
Abstract
Abstract An improved hermetically sealed composite container formed by double seaming a pair of heated and compounded metal ends to a flanged can body so that the heated compound is bonded to an inner liner of thermoplastic material on the can body to provide an effective seal.
Inventors
- 👤 Edwin D Griffith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:03
CPC Classifications
B; B65; B65D; B65D15/00; B65D15/02; B65D15/04; B65D15/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
87 words
A mechanically strong, hermetically sealed composite container adapted to contain a fluid under pressure comprising: a cylindrical fiber can body constructed of a number of layers of paper and having an inner liner including a thermoplastic material; and a pair of end closure means which are mechanically double seamed to the ends of said cylindrical body, each of said end closure means including a portion of compound material which forms a bond with said thermoplastic material upon the application of heat to thereby hermetically seal said container.
Claim 2
Dependent Claim
87 words
A mechanically strong, hermetically sealed composite container adapted to contain a fluid under pressure comprising: a cylindrical fiber can body constructed of a number of layers of paper and having an inner liner including a thermoplastic material; and a pair of end closure means which are mechanically double seamed to the ends of said cylindrical body, each of said end closure means including a portion of compound material which forms a bond with said thermoplastic material upon the application of heat to thereby hermetically seal said container.
Claim 3
Dependent Claim
35 words
A mechanically strong, hermetically sealed container adapted to contain a fluid under pressure as set forth in claim 1 wherein said inner liner is formed from a lamination of polypropylene film, aluminum foil, and paper.
Claim 4
Dependent Claim
80 words
A mechanically strong, hermetically sealed composite container adapted to contain a fluid under pressure comprising: a cylindrical body formed from plastic and having an inner liner including a thermoplastic material; and a pair of end closure means which are mechanically double seamed to the ends of said cylindrical body, each of said end closure means including a portion of compound material which forms a bond with said thermoplastic material upon the application of heat to thereby hermetically seal said container.
Claim 5
Dependent Claim
80 words
A mechanically strong, hermetically sealed composite container adapted to contain a fluid under pressure comprising: a cylindrical body formed from plastic and having an inner liner including a thermoplastic material; and a pair of end closure means which are mechanically double seamed to the ends of said cylindrical body, each of said end closure means including a portion of compound material which forms a bond with said thermoplastic material upon the application of heat to thereby hermetically seal said container.
Claim 6
Dependent Claim
35 words
A mechanically strong, hermetically sealed container adapted to contain a fluid under pressure as set forth in claim 3 wherein said inner liner is formed from a lamination of polypropylene film, aluminum foil, and paper.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |