US3150339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coil having heat conductive segments and c-shaped conductive path
Assignee: Philips Electronics and Pharmaceutical Industries Corp
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Filing: 1962-07-05
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Granted: 1964-09-22
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 Alvar P Wilska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:41
CPC Classifications
H; H01; H01J; H01J29/00; H01J29/46; H01J29/58; H01J29/64; H01J29/66; H01F; H01F41/00; H01F41/02; H01F41/04; H01J23/00; H01J23/02; H01J23/08; H01J23/087; H01J37/00; H01J37/02; H01J37/04; H01J37/10; H01J37/14; H01J37/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
199 words
A COIL COMPRISING A PLURALITY OF TURNS, EACH OF SAID TURNS COMPRISING A CIRCULAR SHEET OF CONDUCTIVE NON-FERROMAGNETIC MATERIAL HAVING A CENTRAL APERTURE THEREIN; A FIRST SLOT EXTENDING FROM THE EDGE OF SAID CIRCULAR SHEET TO SAID APERTURE; A PLURALITY OF OTHER V-SHAPED SLOTS EXTENDING FROM THE EDGE OF SAID SHEET PART OF THE WAY IN TOWARD SAID APERTURE, SAID OTHER SLOTS BEING SPACED SUBSTANTIALLY EQUI-DISTANTLY AROUND SAID SHEET AND LEAVING A C-SHAPED, CONDUCTIVE PATH SURROUNDING AND DEFINING SAID APERTURE WITH THE ENDS OF SAID C-SHAPED, CONDUCTIVE PATH BOUNDING AND DEFINING THE INNERMOST ENDS OF SAID ONE SLOT; A FIRST SOLDER LAYER IN A LIMITED REGION AT ONE END OF SAID CSHAPED, CONDUCTIVE PATH ON ONE SURFACE OF SAID SHEET; A SECOND SOLDER LAYER IN A SECOND LIMITED REGION ON THE OTHER SURFACE OF SAID SHEET AT THE OTHER END OF SAID C-SHAPED, CONDUCTIVE PATH; AND AN INSULATING LAYER INTIMATELY ATTACHED TO AND COVERING BOTH SURFACES OF SAID SHEET EXCEPT FOR EACH OF SAID SOLDER LAYERS, THE FIRST SOLDER LAYER OF EACH OF SAID TURNS BEING FUSED TO THE SECOND SOLDER LAYER OF THE ADJACENT TURN, SAID TURNS BEING IN SURFACE-TO-SURFACE CONTACT TO FORM A MONOLITHIC, HOLLOW AIR-CORE COIL.
Claim 2
Dependent Claim
199 words
A COIL COMPRISING A PLURALITY OF TURNS, EACH OF SAID TURNS COMPRISING A CIRCULAR SHEET OF CONDUCTIVE NON-FERROMAGNETIC MATERIAL HAVING A CENTRAL APERTURE THEREIN; A FIRST SLOT EXTENDING FROM THE EDGE OF SAID CIRCULAR SHEET TO SAID APERTURE; A PLURALITY OF OTHER V-SHAPED SLOTS EXTENDING FROM THE EDGE OF SAID SHEET PART OF THE WAY IN TOWARD SAID APERTURE, SAID OTHER SLOTS BEING SPACED SUBSTANTIALLY EQUI-DISTANTLY AROUND SAID SHEET AND LEAVING A C-SHAPED, CONDUCTIVE PATH SURROUNDING AND DEFINING SAID APERTURE WITH THE ENDS OF SAID C-SHAPED, CONDUCTIVE PATH BOUNDING AND DEFINING THE INNERMOST ENDS OF SAID ONE SLOT; A FIRST SOLDER LAYER IN A LIMITED REGION AT ONE END OF SAID CSHAPED, CONDUCTIVE PATH ON ONE SURFACE OF SAID SHEET; A SECOND SOLDER LAYER IN A SECOND LIMITED REGION ON THE OTHER SURFACE OF SAID SHEET AT THE OTHER END OF SAID C-SHAPED, CONDUCTIVE PATH; AND AN INSULATING LAYER INTIMATELY ATTACHED TO AND COVERING BOTH SURFACES OF SAID SHEET EXCEPT FOR EACH OF SAID SOLDER LAYERS, THE FIRST SOLDER LAYER OF EACH OF SAID TURNS BEING FUSED TO THE SECOND SOLDER LAYER OF THE ADJACENT TURN, SAID TURNS BEING IN SURFACE-TO-SURFACE CONTACT TO FORM A MONOLITHIC, HOLLOW AIR-CORE COIL.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |