Patent US2821498A successfully refreshed from Google Patents.
US2821498A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical conductors insulated with mica and completely reactive synthetic copolymer resinous compositions
Assignee: Westinghouse Electric Corp
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Filing: 1954-08-20
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Granted: 1958-01-28
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Expires: 1974-08-20
Abstract
No abstract record available.
Inventors
- 👤 John C Botts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:42
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; H01B3/425; H01B3/02; H01B3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
THE METHOD OF PREPARING AN INSULATED ELECTRICAL CONDUCTOR COMPRISING WRAPPING THE CONDUCTOR WITH A TAPE COMPRISING A PLIABLE SHEET BACKING MEMBER, A LAYER OF MICA FLAKES DISPOSED ON THE BACKING MEMBER, AND A MATERIAL BINDING THE FLAKES TO THE BACKING MEMBER COMPRISING AT LEAST ONE UNSATURATED POLYESTER RESIN, IMPREGNATING THE SENTIALLY OF AN ADDITION-TYPE POLYMERIZATION CATALYST AND SENTIALLY OF AN ADDITION-TYPE POLYMERIZATION CATALYST AND A LIQUID UNSATURATED REACTIVE MONOMER HAVING ONLY A SINGLE >C=C< GROUP, THE MONOMER BEING MISCIBLE AND COMPARTIBLE WITH THE POLYESTER RESIN WHEREBY IT READILY PENETRATES THROUGH THE APPLIED TAPE WRAPPING AND BLENDS WITH THE POLYESTER TO FORM A COMPLETELY REACTIVE POLYMERIZABLE COMPOSITION FILLING ALL THE INTERSTICES AND SPACES IN THE WRAPPED CONDUCTOR, AND HEATING THE WRAPPED CONDUCTOR TO POLYMERIZE THE COMPLETELY REACTIVE COMPOSITION TO A SOLID, THERMOSET RESIN.
Claim 2
Independent Claim
132 words
THE METHOD OF PREPARING AN INSULATED ELECTRICAL CONDUCTOR COMPRISING WRAPPING THE CONDUCTOR WITH A TAPE COMPRISING A PLIABLE SHEET BACKING MEMBER, A LAYER OF MICA FLAKES DISPOSED ON THE BACKING MEMBER, AND A MATERIAL BINDING THE FLAKES TO THE BACKING MEMBER COMPRISING AT LEAST ONE UNSATURATED POLYESTER RESIN, IMPREGNATING THE SENTIALLY OF AN ADDITION-TYPE POLYMERIZATION CATALYST AND SENTIALLY OF AN ADDITION-TYPE POLYMERIZATION CATALYST AND A LIQUID UNSATURATED REACTIVE MONOMER HAVING ONLY A SINGLE >C=C< GROUP, THE MONOMER BEING MISCIBLE AND COMPARTIBLE WITH THE POLYESTER RESIN WHEREBY IT READILY PENETRATES THROUGH THE APPLIED TAPE WRAPPING AND BLENDS WITH THE POLYESTER TO FORM A COMPLETELY REACTIVE POLYMERIZABLE COMPOSITION FILLING ALL THE INTERSTICES AND SPACES IN THE WRAPPED CONDUCTOR, AND HEATING THE WRAPPED CONDUCTOR TO POLYMERIZE THE COMPLETELY REACTIVE COMPOSITION TO A SOLID, THERMOSET RESIN.
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) | 1961-01-27 | 1961-07-29 | 1962-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-27 | 1965-07-29 | 1966-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-27 | 1969-07-29 | 1970-01-28 | $7700.00 | Window Closed / Lapsed |