US2661390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molded insulator
Assignee: Westinghouse Electric Corp
•
Filing: 1949-01-29
•
Granted: 1953-12-01
•
Expires: 1969-01-29
Abstract
No abstract record available.
Inventors
- 👤 Maurice J Gelpi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:04
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A MOLDED CYLINDRICAL INSULATOR COMPRISING A TUBULAR OUTER SHELL COMPOSED OF A PLURALITY OF TURNS OF SHEET FIBROUS MATERIAL IMPREGNATED AND BONDED WITH A THERMOSET RESIN, THE SHELL COMPRISING AT LEAST 50% OF THE TICKNESS OF MATERIAL ALONG A DIMETER, THE TUBULAR OUTER SHELL HAVING A CENTRAL OPENING, A METALLIC FITTING EXTENDING FROM EACH END OF THE TUBULAR SHELL, THE METALLIC FITTINGS EACH HAVING A ROUGHENED STEM EXTENDING WITH THE CENTRAL OPENING, AND A CORE DISPOSED WITHIN THE CENTRAL OPENING OF THE CORE COMPRISING A THERMOSET MACERATED FIBEB AND RESIN BODY BONDED TO THE TUBULAR OUTER SHELL AND TO THE ROUGHENED STEMS, THE CORE APPLYING AN INTERNAL PRESSURE AGAINST THE TUBULAR OUTER SHELL TO PUT THE TURNS OF THE SHEET FIBROUS MATERIAL IN TENSION WHEREBY THE TURNS OF THE TUBE ARE RELATIVELY UNWRINKLED, THE TUBULAR OUTER SHELL PROVIDED FOR HIGH MECHANICAL STRENGTH, RESISTANCE TO MOISTURE AND GOOD ELECTRICAL INSULTING PROPERTIES
Claim 2
Dependent Claim
150 words
A MOLDED CYLINDRICAL INSULATOR COMPRISING A TUBULAR OUTER SHELL COMPOSED OF A PLURALITY OF TURNS OF SHEET FIBROUS MATERIAL IMPREGNATED AND BONDED WITH A THERMOSET RESIN, THE SHELL COMPRISING AT LEAST 50% OF THE TICKNESS OF MATERIAL ALONG A DIMETER, THE TUBULAR OUTER SHELL HAVING A CENTRAL OPENING, A METALLIC FITTING EXTENDING FROM EACH END OF THE TUBULAR SHELL, THE METALLIC FITTINGS EACH HAVING A ROUGHENED STEM EXTENDING WITH THE CENTRAL OPENING, AND A CORE DISPOSED WITHIN THE CENTRAL OPENING OF THE CORE COMPRISING A THERMOSET MACERATED FIBEB AND RESIN BODY BONDED TO THE TUBULAR OUTER SHELL AND TO THE ROUGHENED STEMS, THE CORE APPLYING AN INTERNAL PRESSURE AGAINST THE TUBULAR OUTER SHELL TO PUT THE TURNS OF THE SHEET FIBROUS MATERIAL IN TENSION WHEREBY THE TURNS OF THE TUBE ARE RELATIVELY UNWRINKLED, THE TUBULAR OUTER SHELL PROVIDED FOR HIGH MECHANICAL STRENGTH, RESISTANCE TO MOISTURE AND GOOD ELECTRICAL INSULTING PROPERTIES
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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) | 1956-11-30 | 1957-06-01 | 1957-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-11-30 | 1961-06-01 | 1961-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-11-30 | 1965-06-01 | 1965-12-01 | $7700.00 | Window Closed / Lapsed |