US3783505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for electrically insulating magnetostrictive material
Assignee: United States Department of the Navy
•
Filing: 1972-03-29
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Granted: 1974-01-08
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Expires: 1992-03-29
Abstract
Abstract A process of electrochemically plating and annealing in a protective atmosphere the surface of ferrous material used in the construction of underwater transducer scrolls and transformer cores to insulate sheets and plates from each other. The process also eliminates work hardening of the material due to handling, and increases operating and production efficiency.
Inventors
- 👤 O Schoen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:26
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/02; H01F41/04; H01F41/12; H01F41/122; H01F27/00; H01F27/24; H01F27/25; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
19 words
A method as in claim 1 wherein said nickel coating is from 0.001 inch to 0.005 inch in thickness.
Claim 2
Dependent Claim
19 words
A method as in claim 1 wherein said magnetostrictive material is a ferrous material which can be nickel plated.
Claim 3
Dependent Claim
19 words
A method as in claim 1 wherein said magnetostrictive material is an iron alloy with approximately 50 percent cobalt.
Claim 4
Dependent Claim
19 words
A method as in claim 1 wherein said magnetostrictive material is any magnetostrictive material whose oxide is electrically conductive.
Claim 5
Dependent Claim
24 words
A method as in claim 1 wherein said layers, after re-annealing, are encased in a potting material for consolidating them into a compact assembly.
References Cited (Backward Citations)
US2227156A
Cited
US2391678A
Cited
US2519495A
Cited
US2592721A
Cited
US3615886A
Cited
US3639177A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |