US3293582A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical device and method of making thereof
Assignee: Superior Electric Co
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Filing: 1963-08-06
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Granted: 1966-12-20
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Expires: 1983-08-06
Abstract
No abstract record available.
Inventors
- 👤 Clifford G Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:16
CPC Classifications
H; H01; H01F; H01F29/00; H01F29/06; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49011; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
125 words
AN ELECTRICAL DEVICE COMPRISING A COIL HAVING A COMMUTATING SURFACE FORMED THEREON CORRESPONDING TO A PATH OF MOVEMENT OF A BRUSH MOVABLE ON SAID COMMUTATING SURFACE IN ELECTRICAL ENGAGEMENT THEREWITH, SAID COIL COMPRISING A CLOSED CORE OF MAGNETIC MATERIAL, A LENGTH OF CONDUCTING WIRE HAVING AN INSULATION LAYER THEREOVER WOUND ON SAID CORE TO FORM A PLURALITY OF WINDING TURNS, AT LEAST SOME OF SAID WINDING TURNS HAVING A SIMILAR PORTION WITH INTERSTICES BETWEEN THE PORTIONS, EACH OF SAID ANNULAR PORTIONS HAVING A FACE OF THE CONDUCTOR AND A FACE OF THE INSULATION LAYER SURROUNDING THE FACE OF THE CONDUCTOR, A HARDENED RELATIVELY THICK COVERING ON AN AREA OF SAID COIL INCLUDING AND ADJACENT TO AT LEAST THE SIMILAR PORTIONS TO SUBSTANTIALLY FILL THE INTERSTICES,
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |