Patent US3598556A successfully refreshed from Google Patents.
US2669601A
Expired / Lapsed
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Insulated bushing
Assignee: Westinghouse Electric Corp
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Filing: 1950-08-19
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Granted: 1954-02-16
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Expires: 1970-08-19
Abstract
No abstract record available.
Inventors
- 👤 John S Johnson
- 👤 Charles C Sterrett
- 👤 Josephine R Garber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:59
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/34; H01B17/26; H01B17/30; H01B17/303; H01B17/306; H01B3/00; H01B3/02; H01B3/04; H01B3/18; H01B3/30; H01B3/44; H01B3/442; H01B3/447; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49227
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
A BUSHING COMPRISING, IN COMBINATION, A STUD, AN INSULATING PORCELAIN SLEEVE OF A LESSER LENGTH THAN THE STUD AND DISPOSED ABOUT THE OUTSIDE OF THE STUD, A SPACE BEING PRESENT ALONG THE FULL LENGTH BETWEEN THE PORCELAIN SLEEVE AND THE STUD, A WRAPPING OF A TAPE APPLIED TO THE STUD TO SUBSTANTIALLY FILL THE SPACE FOR THE ENTIRE LENGTH OF THE PORCELAIN SLEEVE, THE TAPE COMPRISING MICA FLAKES AND A SHEET BACKING, AND A BODY OF THERMOSET RESIN FILLING THE ENTIRE SPACE AND SOLIDLY IMPREGNATING THE TAPE WHEREBY NO VOIDS ARE PRESENT BETWEEN THE STUD AND THE PORCELAIN SLEEVE, THE RESIN COMPRISING ESSENTIALLY THE PRODUCT DERIVED
Claim 2
Dependent Claim
106 words
A BUSHING COMPRISING, IN COMBINATION, A STUD, AN INSULATING PORCELAIN SLEEVE OF A LESSER LENGTH THAN THE STUD AND DISPOSED ABOUT THE OUTSIDE OF THE STUD, A SPACE BEING PRESENT ALONG THE FULL LENGTH BETWEEN THE PORCELAIN SLEEVE AND THE STUD, A WRAPPING OF A TAPE APPLIED TO THE STUD TO SUBSTANTIALLY FILL THE SPACE FOR THE ENTIRE LENGTH OF THE PORCELAIN SLEEVE, THE TAPE COMPRISING MICA FLAKES AND A SHEET BACKING, AND A BODY OF THERMOSET RESIN FILLING THE ENTIRE SPACE AND SOLIDLY IMPREGNATING THE TAPE WHEREBY NO VOIDS ARE PRESENT BETWEEN THE STUD AND THE PORCELAIN SLEEVE, THE RESIN COMPRISING ESSENTIALLY THE PRODUCT DERIVED
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) | 1957-02-15 | 1957-08-17 | 1958-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-15 | 1961-08-17 | 1962-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-15 | 1965-08-17 | 1966-02-16 | $7700.00 | Window Closed / Lapsed |