Patent US2455485A successfully refreshed from Google Patents.
Patent US2792871A successfully refreshed from Google Patents.
US2792871A
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Electrical insulating structure and method of making the same
Assignee: General Electric Co
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Filing: 1955-05-27
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Granted: 1957-05-21
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Expires: 1975-05-27
Abstract
No abstract record available.
Inventors
- 👤 Doigan Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:48
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/009; C04B41/45; C04B41/46; C04B41/48; C04B41/4826; H; H01; H01B; H01B3/00; H01B3/02; H01B3/06; H01F; H01F27/00; H01F27/28; H01F27/32; H01F27/324; C04B2111/00; C04B2111/90; C04B2111/92
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
ELECTRICAL INSULATING STRUCTURE HAVING HIGH DIELECTRIC AND MECHANICAL STRENGTH AND HIGH TEMPERATURE STABILITY COMPRISING A WOUND MULTI-PLY CYLINDRICAL PRODUCT ADAPTED FOR USE AS AN INSULTING BARRIER FOR ELECTRICAL APPARATUS SAID CYLINDRICAL PRODUCT BEING COMPOSED OF INSULATING SHEET MATERIAL CONSISTING IN PER CENT BY WEIGHT OF ABOUT 80-85% ASBESTOS FIBERS, ABOUT 15-20% ORGANIC MATERIAL AND A MAXIMUM IRON CONTENT OF ABOUT 0.5%, SAID INSULATING SHEET MATERIAL BEING IMPREGNATTED WITH A COPOLYMER OF ABOUT EQUAL PARTS OF DIALLYL PHTHALATE AND DIETHYLENE GLYCOL MALEATE.
Claim 2
Dependent Claim
81 words
ELECTRICAL INSULATING STRUCTURE HAVING HIGH DIELECTRIC AND MECHANICAL STRENGTH AND HIGH TEMPERATURE STABILITY COMPRISING A WOUND MULTI-PLY CYLINDRICAL PRODUCT ADAPTED FOR USE AS AN INSULTING BARRIER FOR ELECTRICAL APPARATUS SAID CYLINDRICAL PRODUCT BEING COMPOSED OF INSULATING SHEET MATERIAL CONSISTING IN PER CENT BY WEIGHT OF ABOUT 80-85% ASBESTOS FIBERS, ABOUT 15-20% ORGANIC MATERIAL AND A MAXIMUM IRON CONTENT OF ABOUT 0.5%, SAID INSULATING SHEET MATERIAL BEING IMPREGNATTED WITH A COPOLYMER OF ABOUT EQUAL PARTS OF DIALLYL PHTHALATE AND DIETHYLENE GLYCOL MALEATE.
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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |