US3089787A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical insulating coating composition, method, and coated article
Assignee: Westinghouse Electric Corp
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Filing: 1959-12-07
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Granted: 1963-05-14
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Expires: 1979-12-07
Abstract
No abstract record available.
Inventors
- 👤 Frank A Sattler
- 👤 Paul A Tierney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:59
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/127; C; C09; C09D; C09D167/00; H01B; H01B13/00; H01B13/30; H01B3/00; H01B3/02; H01B3/08; H01B3/082; H01F27/00; H01F27/28; H01F27/32; H01F27/323; H01F41/122; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2958; Y10T428/296; Y10T428/31504; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A METHOD OF PRODUCING POTTED ELECTRICAL MEMBERS HAVING FIBROUS INORGANIC INSULATION DISPOSED THEREABOUT COMPRISING THE STEPS OF IMPREGNATING THE FIBROUS INORGANIC INSULATED MEMBER WITH A POLYESTER RESIN, POTTING THE COATED INSULATED MEMBER IN A WATER-ALCOHOL SLURRY OF A CERAMIC POTTING COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT FROM 70% TO 80% OF (I) AN INTIMATE ADMIXTURE CONSISTING ESSENTIALLY, BY WEIGHT, OF FROM 30% TO 35% OF ALUMINA, FROM 35% TO 40% OF MAGNESIUM OXIDE, FROM 12% TO 17% SILICA, AND FROM 10% TO 15% OF AMMONIUM DIHYDROGEN PHOSPHATE AND (II) FROM 30% TO 20% OF A LEAD-BORATE GLASS COMPONENT CONSISTING ESSENTIALLY OF, BY WEIGHT FROM ABOUT 10% TO 20% OF BORON OXIDE AND FROM 90% TO 80% OF LEAD OXIDE, DRYING THE APPLIED POTTING COMPOSITION TO REMOVE SUBSTANTIALLY ALL THE WATER AND ALCOHOL THEREFROM, AND HEATING THE POTTED MEMBER TO CURE THE CERAMIC POTTING COMPOSITION WHEREBY SUBSTANTIALLY ALL OF THE POLYESTER IS REMOVED AND THE CERAMIC POTTING COMPOSITION IS SOLIDIFIED.
Claim 2
Independent Claim
159 words
A METHOD OF PRODUCING POTTED ELECTRICAL MEMBERS HAVING FIBROUS INORGANIC INSULATION DISPOSED THEREABOUT COMPRISING THE STEPS OF IMPREGNATING THE FIBROUS INORGANIC INSULATED MEMBER WITH A POLYESTER RESIN, POTTING THE COATED INSULATED MEMBER IN A WATER-ALCOHOL SLURRY OF A CERAMIC POTTING COMPOSITION CONSISTING ESSENTIALLY OF, BY WEIGHT FROM 70% TO 80% OF (I) AN INTIMATE ADMIXTURE CONSISTING ESSENTIALLY, BY WEIGHT, OF FROM 30% TO 35% OF ALUMINA, FROM 35% TO 40% OF MAGNESIUM OXIDE, FROM 12% TO 17% SILICA, AND FROM 10% TO 15% OF AMMONIUM DIHYDROGEN PHOSPHATE AND (II) FROM 30% TO 20% OF A LEAD-BORATE GLASS COMPONENT CONSISTING ESSENTIALLY OF, BY WEIGHT FROM ABOUT 10% TO 20% OF BORON OXIDE AND FROM 90% TO 80% OF LEAD OXIDE, DRYING THE APPLIED POTTING COMPOSITION TO REMOVE SUBSTANTIALLY ALL THE WATER AND ALCOHOL THEREFROM, AND HEATING THE POTTED MEMBER TO CURE THE CERAMIC POTTING COMPOSITION WHEREBY SUBSTANTIALLY ALL OF THE POLYESTER IS REMOVED AND THE CERAMIC POTTING COMPOSITION IS SOLIDIFIED.
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) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |