US3044900A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical apparatus having a coating consisting of resinous polymeric epoxide containing finely divided aluminum oxide trihydrate and resinous polyamide
Assignee: Westinghouse Electric Corp
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Filing: 1959-03-11
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Granted: 1962-07-17
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Expires: 1979-03-11
Abstract
No abstract record available.
Inventors
- 👤 James G Ford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:16
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/005; C; C08; C08L; C08L63/00; H01B; H01B3/00; H01B3/002; H01B3/18; H01B3/30; H01B3/40; H01F27/00; H01F27/02; H01F27/022; Y; Y10; Y10S; Y10S174/00; Y10S174/01; Y10T; Y10T428/00; Y10T428/26; Y10T428/269
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A PROCESS FOR APPLYING A UNIFORM 10 TO 30 MLS THICK RESIN COATING ON ELECTRICAL APPARATUS WHICH COMPRISES ESTABLISHING A RESIN BLEND CONSISTING OF (A) FROM 3 TO 8 PARTS BY VOLUME OF A MIXTURE CONSISTING OF FROM 20% TO 40% OF AT LEAST ONE NORMALLY LIQUID RESINOUS POLYMERIC EPOXIDE WHICH IS A GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1,0 FROM 25% TO 50% OF A FINELY DIVIDED INORGANIC FILLER, AND THE BALANCE SOLVENT, AND (B) FROM 0.5 TO 3 PARTS BY VOLUME OF A SOLVENT SOLUTION OF A NORMALLY LIQUID RESINOUS POLYAMIDE DERIVED BY REACTING AT LEAST ONE POLYAMINE WITH AT LEAST ONE DIMERIZED FATTY ACID CONTAINING FROM 8 TO 24 CARBON ATOMS PER MOLECULE, APPLYING SAID RESIN BLEND TO SAID ELECTRICAL APPARATUS AND HEATING THE DEPOSITED COATING AT 125*C TO 175*C TO CONVERT IT TO A HARDENED, THERMOSET STATE.
Claim 2
Dependent Claim
147 words
A PROCESS FOR APPLYING A UNIFORM 10 TO 30 MLS THICK RESIN COATING ON ELECTRICAL APPARATUS WHICH COMPRISES ESTABLISHING A RESIN BLEND CONSISTING OF (A) FROM 3 TO 8 PARTS BY VOLUME OF A MIXTURE CONSISTING OF FROM 20% TO 40% OF AT LEAST ONE NORMALLY LIQUID RESINOUS POLYMERIC EPOXIDE WHICH IS A GLYCIDYL POLYETHER OF A DIHYDRIC PHENOL HAVING A 1,2-EPOXY EQUIVALENCY GREATER THAN 1,0 FROM 25% TO 50% OF A FINELY DIVIDED INORGANIC FILLER, AND THE BALANCE SOLVENT, AND (B) FROM 0.5 TO 3 PARTS BY VOLUME OF A SOLVENT SOLUTION OF A NORMALLY LIQUID RESINOUS POLYAMIDE DERIVED BY REACTING AT LEAST ONE POLYAMINE WITH AT LEAST ONE DIMERIZED FATTY ACID CONTAINING FROM 8 TO 24 CARBON ATOMS PER MOLECULE, APPLYING SAID RESIN BLEND TO SAID ELECTRICAL APPARATUS AND HEATING THE DEPOSITED COATING AT 125*C TO 175*C TO CONVERT IT TO A HARDENED, THERMOSET STATE.
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) | 1965-07-16 | 1966-01-15 | 1966-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-16 | 1970-01-15 | 1970-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-16 | 1974-01-15 | 1974-07-17 | $7700.00 | Window Closed / Lapsed |