US3271718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic cores for electrical devices and method of manufacture
Assignee: Tyco International Ltd
•
Filing: 1962-08-06
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Granted: 1966-09-06
•
Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Beverley A Shaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
H; H01; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/14; H01F1/147; H01F1/14766; H01F1/14775; H01F1/14783; H01F41/00; H01F41/02; H01F41/0206; H01F41/0233; Y; Y10; Y10S; Y10S228/00; Y10S228/903; Y10S428/00; Y10S428/90; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9265; Y10S428/928; Y10S428/9335; Y10S428/938; Y10S428/939; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49009; Y10T29/49012; Y10T29/4902; Y10T29/49021; Y10T29/49032; Y10T29/49055; Y10T29/49075; Y10T29/49076; Y10T29/49078; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12674; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
44 words
A BONDED LAMINATED MAGNETIC CORE COMPRISING A PLURALITY OF MAGNETIC IRON ALLOY LAMELLAE EACH HAVING AN INSULATING COATING OF SILICON MONOXIDE AND SILICON DIOXIDE BONDED THERETO BY AN IRON SILICATE, SAID LAMELLAE HELD TOGETHER BY INTERVENING LAYERS OF A NON-MAGNETIC METAL BRAZE BONDING MATERIAL.
Claim 2
Dependent Claim
44 words
A BONDED LAMINATED MAGNETIC CORE COMPRISING A PLURALITY OF MAGNETIC IRON ALLOY LAMELLAE EACH HAVING AN INSULATING COATING OF SILICON MONOXIDE AND SILICON DIOXIDE BONDED THERETO BY AN IRON SILICATE, SAID LAMELLAE HELD TOGETHER BY INTERVENING LAYERS OF A NON-MAGNETIC METAL BRAZE BONDING MATERIAL.
Claim 3
Independent Claim
63 words
THE METHOD OF FABRICATING A LAMINATED MAGNETIC CORE COMPRISING THE STEPS OF PROVIDING A PLURALITY OF SHEETS OF MAGNETIC ALLOY MATERIAL COATED WITH THIN LAYERS OF SILICON OXIDE CONSISTING SUBSTANTIALLY OF SILICON MONOXIDE, COATING SAID SILICON OXIDE LAYERS WITH A BRAZING MATERIAL, STACKING SAID SHEETS TOGETHER, AND APPLYING HEAT SUFFICIENT TO BRAZE SAID SHEETS TOGETHER WHEREBY TO FORM A SINGLE INTEGRATED MAGNETIC CORE.
Claim 4
Independent Claim
63 words
THE METHOD OF FABRICATING A LAMINATED MAGNETIC CORE COMPRISING THE STEPS OF PROVIDING A PLURALITY OF SHEETS OF MAGNETIC ALLOY MATERIAL COATED WITH THIN LAYERS OF SILICON OXIDE CONSISTING SUBSTANTIALLY OF SILICON MONOXIDE, COATING SAID SILICON OXIDE LAYERS WITH A BRAZING MATERIAL, STACKING SAID SHEETS TOGETHER, AND APPLYING HEAT SUFFICIENT TO BRAZE SAID SHEETS TOGETHER WHEREBY TO FORM A SINGLE INTEGRATED MAGNETIC CORE.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |