US2920296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reduction of transformer noise due to magnetostrictive effects
Assignee: General Electric Co
•
Filing: 1955-01-07
•
Granted: 1960-01-05
•
Expires: 1975-01-07
Abstract
No abstract record available.
Inventors
- 👤 Peter W Neurath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:37
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/33; H01F27/24; H01F27/26; H01F27/263; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A MAGNETIC CORE ASSEMBLY FOR INDUCTION APPARATUS COMPRISING ANNEALED GRAIN-ORIENTED MAGNETIC SHEET MATERIAL, MEANS HOLDING SAID SHEET MATERIAL IN ASSEMBLY WHILE EXERTING COMPRESSIVE STRESS THEREON IN THE DIRECTION OF GRAIN-ORIENTATION OF SAID SHEET MATERIAL, AND MEANS PRODUCING ON SAID SHEET MATERIAL AT LEAST AN AMOUNT OF TENSION TO FULLY COUNTERACT THE COMPRESSIVE STRESS EXERTED BY SAID HOLDING MEANS ON SAID SHEET MATERIAL, WHEREBY THE MAGNETOSTRICTION OF THE SHEET MATERIAL AND THE CONSEQUENT NOISE PRODUCED WHEN THE INDUCTION APPARATUS IS ENERGIZED ARE REDUCED.
Claim 2
Dependent Claim
82 words
A MAGNETIC CORE ASSEMBLY FOR INDUCTION APPARATUS COMPRISING ANNEALED GRAIN-ORIENTED MAGNETIC SHEET MATERIAL, MEANS HOLDING SAID SHEET MATERIAL IN ASSEMBLY WHILE EXERTING COMPRESSIVE STRESS THEREON IN THE DIRECTION OF GRAIN-ORIENTATION OF SAID SHEET MATERIAL, AND MEANS PRODUCING ON SAID SHEET MATERIAL AT LEAST AN AMOUNT OF TENSION TO FULLY COUNTERACT THE COMPRESSIVE STRESS EXERTED BY SAID HOLDING MEANS ON SAID SHEET MATERIAL, WHEREBY THE MAGNETOSTRICTION OF THE SHEET MATERIAL AND THE CONSEQUENT NOISE PRODUCED WHEN THE INDUCTION APPARATUS IS ENERGIZED ARE REDUCED.
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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) | 1963-01-04 | 1963-07-06 | 1964-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-04 | 1967-07-06 | 1968-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-04 | 1971-07-06 | 1972-01-05 | $7700.00 | Window Closed / Lapsed |