US3339013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arc and tracking resistant insulation
Assignee: Westinghouse Electric Corp
•
Filing: 1963-06-07
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Granted: 1967-08-29
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Expires: 1983-06-07
Abstract
No abstract record available.
Inventors
- 👤 Gordon C Gainer
- 👤 Irving R Axelrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:10
CPC Classifications
H; H01; H01F; H01F27/00; H01F27/02; H01F27/022; C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; H01B; H01B3/00; H01B3/002; H01B3/006; H01B3/18; H01B3/30; Y; Y10; Y10S; Y10S174/00; Y10S174/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
IN ELECTRICAL APPARATUS INCLUDING SPACED ELECTRICALLY CONDUCTIVE MEMBERS BETWEEN WHICH AN ELECTRICAL POTENTIAL MAY BE DEVELOPED AND BETWEEN WHICH AN ORGANIC INSULATING MATERIAL IS DISPOSED, THE IMPROVEMENT COMPRISING DISPERSING IN THE ORGANIC INSULATION ABOUT 20 TO 75 WEIGHT PERCENT, BASED ON THE RESULTING INSULATION, OF A NATURAL OCCURRING MINERAL MAGENSIUM CARBONATE TO IMPART IMPROVED ARC AND TRACKING RESISTANCE THERETO.
Claim 2
Dependent Claim
59 words
IN ELECTRICAL APPARATUS INCLUDING SPACED ELECTRICALLY CONDUCTIVE MEMBERS BETWEEN WHICH AN ELECTRICAL POTENTIAL MAY BE DEVELOPED AND BETWEEN WHICH AN ORGANIC INSULATING MATERIAL IS DISPOSED, THE IMPROVEMENT COMPRISING DISPERSING IN THE ORGANIC INSULATION ABOUT 20 TO 75 WEIGHT PERCENT, BASED ON THE RESULTING INSULATION, OF A NATURAL OCCURRING MINERAL MAGENSIUM CARBONATE TO IMPART IMPROVED ARC AND TRACKING RESISTANCE THERETO.
References Cited (Backward Citations)
US2325416A
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US2768264A
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US2997527A
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US2997528A
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US2997526A
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FR1267518A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-08-28 | 1971-02-27 | 1971-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-28 | 1975-02-27 | 1975-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-28 | 1979-02-27 | 1979-08-29 | $7700.00 | Window Closed / Lapsed |