Patent US3781462A successfully refreshed from Google Patents.
US3781462A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper-insulated electrical conductor and method of making same
Assignee: Phelps Dodge Industries Inc
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Filing: 1972-05-25
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Granted: 1973-12-25
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Expires: 1992-05-25
Abstract
Abstract Interposed between the conductor and the helical or longitudinal wrapping of paper insulation is a layer of self-setting, heat sealable emulsion having adhesive properties and which is inert, water soluble and free of metal. The emulsion is absorbed by the innermost lay of the paper and causes it to adhere to the next outer paper lay, while the outer portion of the paper which is not exposed to the saturated portion remains loosely formed around the conductor. Upon drying of the paper insulation, the solid portion of the emulsion remains as a film on the periphery of the conductor and the innermost surface of the paper.
Inventors
- 👤 A Santos
- 👤 C Feder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:52
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B3/448; H01B7/00; H01B7/02; H01B7/0208
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A combination according to claim 1, in which said emulsion is a Polyvinyl/Acetate emulsion.
Claim 2
Dependent Claim
14 words
A combination according to claim 1, in which said emulsion is an Acetate/Ethylene emulsion.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |