US3749602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of removing high-temperature enamel insulation from electrically conductive wire
Assignee: General Electric Co
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Filing: 1972-05-24
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Granted: 1973-07-31
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Expires: 1992-05-24
Abstract
Abstract A METHOD OF REMOVING HIGH-TEMPERATURE ENAMEL INSULATION SUCH AS ESTERIMIDE AND POLYIMIDE FROM ELECTRICALLY CONDUCTIVE WIRE. THE METHOD COMPRISES THE STEPS OF HEATING THE HIGH-TEMPERATURE ENAMEL INSULATION TO BE REMOVED TO RED HEAT AS BY USE OF A GAS-OXYGEN TORCH WHEREUPON THE HEATED INSULATION IS DEGRADED TO A WEAKLY COHESIVE STATE. A STREAM OF COOLANT SUCH AS A MIXTURE OF AIR AND WATER IS THEN DIRECTED AT THE HEATED INSULATION TO COOL AND BLOW THE HEATED INSULATION FROM THE WATER.
Inventors
- 👤 R Mosier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:42
CPC Classifications
H; H02; H02G; H02G1/00; H02G1/12; H02G1/1275; B; B08; B08B; B08B7/00
Claims Analysis
Total Claims: 0
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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) | 1976-07-30 | 1977-01-29 | 1977-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-30 | 1981-01-29 | 1981-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-30 | 1985-01-29 | 1985-07-31 | $7700.00 | Window Closed / Lapsed |