Patent US4356926A successfully refreshed from Google Patents.
US4356926A
Expired / Lapsed
US
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Method of bonding plastic to metal and container formed thereby
Assignee: Individual
•
Filing: 1980-03-19
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Granted: 1982-11-02
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Expires: 2000-03-19
Abstract
Abstract A method of bonding metal to plastic by application of ultrasonic energy alone or by insert injection molding or by a simultaneous application of ultrasonic energy during insert injection molding. A container made by the process, particularly a beverage container.
Inventors
- 👤 William J. Priestly
- 👤 Nelson E. McLoughlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:07
CPC Classifications
B; B65; B65D; B65D23/00; B29; B29C; B29C45/00; B29C45/14; B29C45/14311; B29C65/00; B29C65/02; B29C65/08; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/12; B29C66/124; B29C66/1244; B29C66/12441; B29C66/12449; B29C66/1246; B29C66/12461; B29C66/303; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/61; B29C66/612; B29C66/70; B29C66/74; B29C66/742; B29C69/00; B65D15/00; B65D15/02; B29C45/14336; B29C45/14598; B29C66/71; B29C66/7422; B29C66/7428; B29C66/74283; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B29L; B29L2031/00; B29L2031/712; B29L2031/7158
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
48 words
A method of forming a complete container having a metal base and a plastic top comprising the steps of: making a metal, open topped, closed bottom, cylindrical container preform; and forming a plastic top thereon by insert injection molding under a pressure of from 8,000 to 12,000 psi.
Claim 2
Independent Claim
48 words
A method of forming a complete container having a metal base and a plastic top comprising the steps of: making a metal, open topped, closed bottom, cylindrical container preform; and forming a plastic top thereon by insert injection molding under a pressure of from 8,000 to 12,000 psi.
Claim 3
Dependent Claim
39 words
The method of claim 1 wherein the open top of the preform is deformed into an uneven surface, the uneven surface being corrugated and curved at its upper terminus into a lip portion having a C configuration in cross-section.
Claim 4
Dependent Claim
44 words
The method of claim 1 comprising the further step of applying ultrasonic energy at a frequency in the range of from 20 to 40 KHz at the junction of the top with the preform, evenly thereabout and simultaneously with the insert injection molding step.
Claim 5
Dependent Claim
40 words
The method of claim 1 wherein the preform is made of a metal selected from the group consisting of aluminum and steel and the top is made of a plastic selected from the group consisting of polyethylene and ABS resin.
Claim 6
Dependent Claim
9 words
The product formed by the process of claim 1.
References Cited (Backward Citations)
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US3440117A
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US3499808A
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US3773205A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-11-01 | 1986-05-03 | 1986-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-01 | 1990-05-03 | 1990-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-01 | 1994-05-03 | 1994-11-02 | $7700.00 | Window Closed / Lapsed |