US2863796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric coil manufacture
Assignee: GTE Sylvania Inc
•
Filing: 1955-04-15
•
Granted: 1958-12-09
•
Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Theodosopoulos James
- 👤 Zack Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:24
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071; Y10T29/49073
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN THE MANUFACTURE OF IMPREGNATED COILS FORMED OF OVERLYING TURNS OF METAL FOIL SEPARATED BY INTERLEAVED TURNS OF INSULTING MATERIAL, IN WHICH THE EDGES OF THE TURNS OF FOIL ARE BURRED TO BRIDGE BETWEEN ADJACENT TURNS, THE METHOD OF REMOVING THE BURRS AND CLEANING THE IMPREGNANT FROM THE EDGES OF THE TURNS COMPRISING IMMERSING THE COILS FOR FROM 10 TO 30 SECONDS IN A CONCENTRATED AQUEOUS SOLUTION OF AN ACID WHICH IS REACTIVE WITH THE METAL, AT A TEMPERATURE BETWEEN 50* C. AND 70*C., THE TIME AND TEMPERATURE CONDITIONS BEING SUCH THAT THE IMPREGNANT IS NOT MELTED WITHIN THE COIL, THEN RINSING THE ACID FROM THE COILS AND DRYING THEM.
Claim 2
Dependent Claim
110 words
IN THE MANUFACTURE OF IMPREGNATED COILS FORMED OF OVERLYING TURNS OF METAL FOIL SEPARATED BY INTERLEAVED TURNS OF INSULTING MATERIAL, IN WHICH THE EDGES OF THE TURNS OF FOIL ARE BURRED TO BRIDGE BETWEEN ADJACENT TURNS, THE METHOD OF REMOVING THE BURRS AND CLEANING THE IMPREGNANT FROM THE EDGES OF THE TURNS COMPRISING IMMERSING THE COILS FOR FROM 10 TO 30 SECONDS IN A CONCENTRATED AQUEOUS SOLUTION OF AN ACID WHICH IS REACTIVE WITH THE METAL, AT A TEMPERATURE BETWEEN 50* C. AND 70*C., THE TIME AND TEMPERATURE CONDITIONS BEING SUCH THAT THE IMPREGNANT IS NOT MELTED WITHIN THE COIL, THEN RINSING THE ACID FROM THE COILS AND DRYING THEM.
References Cited (Backward Citations)
US362974A
Cited
US1909079A
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US2293951A
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US2511988A
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US2520173A
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US2673792A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-08 | 1962-06-09 | 1962-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-08 | 1966-06-09 | 1966-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-08 | 1970-06-09 | 1970-12-09 | $7700.00 | Window Closed / Lapsed |