US2707693A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing electrical coils
Assignee: Sprague Electric Co
•
Filing: 1950-07-21
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Granted: 1955-05-03
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Expires: 1970-07-21
Abstract
No abstract record available.
Inventors
- 👤 Stanley O Dorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:02
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/06; H01F41/064; H01F41/066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PRODUCING ELECTRICAL COILS WHICH COMPRISES PASSING AT LEAST ONE CONDUCTOR INSULATED WITH AN INTEGRAL COATING OF FINELY DIVIDED PARTICLES OF CERAMIC MATERIAL THROUGH A SUSPENSION OF PARTICLES OF POLYMER OF A TETRAHALOETHYLENE, REMOVING THE SUSPENDING MEDIUM FROM THE COATING OF SAID POLYMER THUS LEFT ON SAID CONDUCTOR, WINDING THE CONDUCTOR INTO THE FORM OF AN ELECTRICAL COIL AND HEATING SAID COILING UNDER PRESSURE AT TEMPERATURE SUFFICIENT TO FUSE SAID POLYMER PARTICLES TOGETHER.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PRODUCING ELECTRICAL COILS WHICH COMPRISES PASSING AT LEAST ONE CONDUCTOR INSULATED WITH AN INTEGRAL COATING OF FINELY DIVIDED PARTICLES OF CERAMIC MATERIAL THROUGH A SUSPENSION OF PARTICLES OF POLYMER OF A TETRAHALOETHYLENE, REMOVING THE SUSPENDING MEDIUM FROM THE COATING OF SAID POLYMER THUS LEFT ON SAID CONDUCTOR, WINDING THE CONDUCTOR INTO THE FORM OF AN ELECTRICAL COIL AND HEATING SAID COILING UNDER PRESSURE AT TEMPERATURE SUFFICIENT TO FUSE SAID POLYMER PARTICLES TOGETHER.
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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) | 1958-05-02 | 1958-11-01 | 1959-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-02 | 1962-11-01 | 1963-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-02 | 1966-11-01 | 1967-05-03 | $7700.00 | Window Closed / Lapsed |