US3300843A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-bonding magnet wire and method
Assignee: Furukawa Electric Co Ltd
•
Filing: 1964-09-09
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Granted: 1967-01-31
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Expires: 1984-09-09
Abstract
No abstract record available.
Inventors
- 👤 Umewaka Toshio
- 👤 Kachi Hiroshi
- 👤 Okubo Noriyoshi
- 👤 Hirano Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:12
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122; H01B; H01B13/00; H01B13/06; H01B13/065; H01B13/14; H01B3/00; H01B3/18; H01B3/30; H01B3/308; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
THE METHOD OF MAKING A SELF-BONDED DOUBLE COATED WIRE, COMPRISING THE STEPS: (A) COATING THE WIRE WITH AN ENAMEL SELECTED FROM THE GROUP CONSISTING OF POLYESTER ENAMEL, POLYURETHANE ENAMEL, ACRYLIC ENAMEL, EPOXY ENAMEL, AND SILICONE ENAMEL, AND BAKING SAID COAT, WHEREBY TO FORM A FIRST BAKED COAT; (B) COATING SAID FIRST COAT WITH A MIXTURE OF POLYVINYL ACETAL AND A RESIN CHOSEN FROM THE GROUP COMPATIBLE WITH SAID POLYVINYL ACETAL CONSISTING OF PHENOL RESIN, EPOXY RESIN, MELAMINE RESIN, SILICONE RESIN, XYLENE RESIN, FURANE RESIN, AND POLYURETHANE RESIN, WHEREBY TO FORM A SECOND COAT; (C) UNDERBAKING SAID SECOND COAT SUCH THAT SAID SECOND COAT WOULD SWELL IF DIPPED FOR FIVE MINUTES IN A BOILING SOLUTION COMPRISED INITIALLY OF 30% TOLUOL AND 70% DENATURED ALCOHOL, BY VOLUME; (D) DIPPING SAID WIRE THUS DOUBLE COATED INTO A SOLVENT OF CHLORINATED ALIPHATIC HYDROCARBONS TO CAUSE SAID SECOND COAT TO SWELL AND WINDING SAID WIRE INTO A COIL OF CONTIGUOUS ADJACENT TURNS, AND (E) HEATING SAID COIL AT A TEMPERATURE SUFFICIENT TO CAUSE SAID SWELLED SECOND COAT TO ADHERE TOGETHER THE ADJACENT TURNS.
Claim 2
Independent Claim
178 words
THE METHOD OF MAKING A SELF-BONDED DOUBLE COATED WIRE, COMPRISING THE STEPS: (A) COATING THE WIRE WITH AN ENAMEL SELECTED FROM THE GROUP CONSISTING OF POLYESTER ENAMEL, POLYURETHANE ENAMEL, ACRYLIC ENAMEL, EPOXY ENAMEL, AND SILICONE ENAMEL, AND BAKING SAID COAT, WHEREBY TO FORM A FIRST BAKED COAT; (B) COATING SAID FIRST COAT WITH A MIXTURE OF POLYVINYL ACETAL AND A RESIN CHOSEN FROM THE GROUP COMPATIBLE WITH SAID POLYVINYL ACETAL CONSISTING OF PHENOL RESIN, EPOXY RESIN, MELAMINE RESIN, SILICONE RESIN, XYLENE RESIN, FURANE RESIN, AND POLYURETHANE RESIN, WHEREBY TO FORM A SECOND COAT; (C) UNDERBAKING SAID SECOND COAT SUCH THAT SAID SECOND COAT WOULD SWELL IF DIPPED FOR FIVE MINUTES IN A BOILING SOLUTION COMPRISED INITIALLY OF 30% TOLUOL AND 70% DENATURED ALCOHOL, BY VOLUME; (D) DIPPING SAID WIRE THUS DOUBLE COATED INTO A SOLVENT OF CHLORINATED ALIPHATIC HYDROCARBONS TO CAUSE SAID SECOND COAT TO SWELL AND WINDING SAID WIRE INTO A COIL OF CONTIGUOUS ADJACENT TURNS, AND (E) HEATING SAID COIL AT A TEMPERATURE SUFFICIENT TO CAUSE SAID SWELLED SECOND COAT TO ADHERE TOGETHER THE ADJACENT TURNS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |