US3022200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnet wire and method of making same
Assignee: Phelps Dodge Copper Products Corp
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Filing: 1960-10-12
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Granted: 1962-02-20
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Expires: 1980-10-12
Abstract
No abstract record available.
Inventors
- 👤 Ernest C Koerner
- 👤 Earl L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:24
CPC Classifications
C; C09; C09D; C09D167/00; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; H01B3/303; H01B3/306; H01B3/308; H01B3/42; H01B7/00; H01B7/02; H01B7/0208; Y; Y10; Y10S; Y10S428/00; Y10S428/90; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
IN THE MANUFACTURE OF INSULATED MAGNET WIRE, THE METHOD WHICH COMPRISES PASSING AN ELECTRICALLY CONDUCTIVE WIRE THROUGH A SOLUTION OF A THERMOSETTING POLYESTER RESIN, THEREBY COATING THE WIRE WITH SAID SOLUTION HEATING THE COATED WIRE TO A TEMPERATURE SUFFICIENT TO CURE THE RESIN TO A HARD COAT ON THE CONDUCTOR, REPEATING SAID COATING AND HEATING STEPS TO FORM ON THE WIRE A THIN, UNIFORM AND CONTINUOUS MUTI-COAT LAYER OF THE CURED RESIN AS A DIELECTRIC, PASSING THE COATED WIRE THROUGH A SOLUTION OF A LINEAR THERMOPLASTIC POLYMER IN A SOLVENT, SAID POLYMER HAVING A MELTING POINT OF AT LEAST 175* C., A RELATIVE VISOCITY ABOVE 13, AND A TENSILE STRENGTH OF AT LEAST 30,000 LBS/SQ. IN. AT 175* C., SAID POLYMER BEING CAPABLE OF FROMING A FIBER AND OF BEING COLD DRAWN AND HAVING A THERMAL LIFE OF AT LEAST 4,000 HOURS AT 200* C. AS MEASURED BY AIEE TWIST PROCEDURE NO. 57 WHEN COATED ON A NO. 18 HEAVY FILM WIRE TO GIVE A 0.003 INCH
Claim 2
Dependent Claim
167 words
IN THE MANUFACTURE OF INSULATED MAGNET WIRE, THE METHOD WHICH COMPRISES PASSING AN ELECTRICALLY CONDUCTIVE WIRE THROUGH A SOLUTION OF A THERMOSETTING POLYESTER RESIN, THEREBY COATING THE WIRE WITH SAID SOLUTION HEATING THE COATED WIRE TO A TEMPERATURE SUFFICIENT TO CURE THE RESIN TO A HARD COAT ON THE CONDUCTOR, REPEATING SAID COATING AND HEATING STEPS TO FORM ON THE WIRE A THIN, UNIFORM AND CONTINUOUS MUTI-COAT LAYER OF THE CURED RESIN AS A DIELECTRIC, PASSING THE COATED WIRE THROUGH A SOLUTION OF A LINEAR THERMOPLASTIC POLYMER IN A SOLVENT, SAID POLYMER HAVING A MELTING POINT OF AT LEAST 175* C., A RELATIVE VISOCITY ABOVE 13, AND A TENSILE STRENGTH OF AT LEAST 30,000 LBS/SQ. IN. AT 175* C., SAID POLYMER BEING CAPABLE OF FROMING A FIBER AND OF BEING COLD DRAWN AND HAVING A THERMAL LIFE OF AT LEAST 4,000 HOURS AT 200* C. AS MEASURED BY AIEE TWIST PROCEDURE NO. 57 WHEN COATED ON A NO. 18 HEAVY FILM WIRE TO GIVE A 0.003 INCH
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) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |