US3290635A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damped magnetic cores
Assignee: Westinghouse Electric Corp
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Filing: 1964-02-07
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Granted: 1966-12-06
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Charles F Hofmann
- 👤 Ronald N Sampson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:30
CPC Classifications
H; H01; H01F; H01F41/00; H01F41/005; H01F27/00; H01F27/02; H01F27/022; H01F27/33; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902; Y10T29/49075; Y10T29/49078
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN AN ENCASED MAGNETIC CORE, IN COMBINATION, A SEALED NON-MAGNETIC ENCLOSURE CONSISTING OF AN ELECTRICALLY INSULATING MATERIAL, HAVING WALLS FORMING A TOROIDAL CHAMBER, A TOROIDALLY WOUND MAGNETIC CORE COMPRISING A MAGNETIC MATERIAL HIGHLY SENSITIVE TO STRAINS, INCLUDING STRAINS INDUCED BY VIBRATION, DISPOSED WITHIN THE TOROIDAL CHAMBER IN THE SEALED ENCLOSURE, THE MAGNETIC CORE BEING FREELY DISPOSED WITHIN THE CHAMBER, AND A SILICONE GEL COMPOSITION FILLING THE SEALED ENCLOSURE TO DAMPEN THE MAGNETIC CORE, THE COMPOSITION BEING COMPOSED OF 2.5 TO 4.0 PERCENT BY WEIGHT OF DIMETHYLSILHEMIOXANE TERMINATED DIMETHYLSILOXANE FLUID AND THE REMAINDER DIMETHYLSILOXANE FLUID CONTAINING ABOUT 0.5 TO 2.0 MOL PERCENT OF METHYLVINYLSILOXANE CURED TO A GEL AT AN ELEVATED TEMPERATURE.
Claim 2
Dependent Claim
111 words
IN AN ENCASED MAGNETIC CORE, IN COMBINATION, A SEALED NON-MAGNETIC ENCLOSURE CONSISTING OF AN ELECTRICALLY INSULATING MATERIAL, HAVING WALLS FORMING A TOROIDAL CHAMBER, A TOROIDALLY WOUND MAGNETIC CORE COMPRISING A MAGNETIC MATERIAL HIGHLY SENSITIVE TO STRAINS, INCLUDING STRAINS INDUCED BY VIBRATION, DISPOSED WITHIN THE TOROIDAL CHAMBER IN THE SEALED ENCLOSURE, THE MAGNETIC CORE BEING FREELY DISPOSED WITHIN THE CHAMBER, AND A SILICONE GEL COMPOSITION FILLING THE SEALED ENCLOSURE TO DAMPEN THE MAGNETIC CORE, THE COMPOSITION BEING COMPOSED OF 2.5 TO 4.0 PERCENT BY WEIGHT OF DIMETHYLSILHEMIOXANE TERMINATED DIMETHYLSILOXANE FLUID AND THE REMAINDER DIMETHYLSILOXANE FLUID CONTAINING ABOUT 0.5 TO 2.0 MOL PERCENT OF METHYLVINYLSILOXANE CURED TO A GEL AT AN ELEVATED TEMPERATURE.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |