Patent US3140458A successfully refreshed from Google Patents.
US3140458A
Expired / Lapsed
US
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Electrical inductive device and method of making the same
Assignee: Miller Electric Manufacturing Co
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Filing: 1957-08-05
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Granted: 1964-07-07
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Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Gerhard K Willecke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:03
CPC Classifications
H; H01; H01F; H01F30/00; H01F30/06; H01F30/08; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
IN THE METHOD OF FORMING A TRANSFORMER HAVING A RELATIVELY HEAVY CURRENT CARRYING WINDING SPIRALLY WOUND IN THE FORM OF A COIL, EXTRUDING ALUMINUM INTO A PLURALITY OF LIKE ROD-LIKE MEMBERS AT LEAST OF A LENGTH EQUAL TO THE FINAL LENGTH OF THE HEAVY WINDING, EACH SAID MEMBER HAVING A SLOT EXTENDING LONGITUDINALLY OF THE ENTIRE MEMBER HAVING A CORRESPONDING PROJECTION OPPOSITE THE SLOT AND OF LESS DEPTH THAN SAID SLOT, DISPOSING AT LEAST TWO OF SAID
Claim 2
Dependent Claim
77 words
IN THE METHOD OF FORMING A TRANSFORMER HAVING A RELATIVELY HEAVY CURRENT CARRYING WINDING SPIRALLY WOUND IN THE FORM OF A COIL, EXTRUDING ALUMINUM INTO A PLURALITY OF LIKE ROD-LIKE MEMBERS AT LEAST OF A LENGTH EQUAL TO THE FINAL LENGTH OF THE HEAVY WINDING, EACH SAID MEMBER HAVING A SLOT EXTENDING LONGITUDINALLY OF THE ENTIRE MEMBER HAVING A CORRESPONDING PROJECTION OPPOSITE THE SLOT AND OF LESS DEPTH THAN SAID SLOT, DISPOSING AT LEAST TWO OF SAID
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) | 1967-07-07 | 1968-01-06 | 1968-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-07 | 1972-01-06 | 1972-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-07 | 1976-01-06 | 1976-07-07 | $7700.00 | Window Closed / Lapsed |