US3358076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protected rod insulator
Assignee: Balfour Beatty PLC
•
Filing: 1965-12-27
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Granted: 1967-12-12
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Expires: 1985-12-27
Abstract
No abstract record available.
Inventors
- 👤 Rebosio Edgardo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:11
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
AN ELECTRIC INSULATOR COMPRISING A ROD OF RESIN BONDED GLASS FIBRE AND, OVER AT LEAST A MAJOR PART OF THE LENGTH OF SAID ROD, A PROTECTIVE COVERING BUILT UP OF A PLURALITY OF AXIALLY ALIGNED SHORT SLEEVES OF RELATIVELY NONTRACKING ELASTOMERIC POLYMERIC MATERIAL, EACH OF WHICH SLEEVS IS FLARED AT ONE END, SAID FLARE BEING INTERNALLY SCREW THREADED OVER A PART OF ITS LENGTH, AND IS EXTERNALLY SCREW THREADED AT ITS OTHER END, THE FLARED END OF EACH OF THE SLEEVES OVERLYING AND BEING IN SCREW THREADED ENGAGEMENT WITH THE EXTERNALY SCREW THREADED END OF AN ADJACENT SLEEVE AND THE INTERNALLY SCREW THREADED FLARE END OF EACH SLEEVE HAVING A TAPER OF SUCH AN ANGLE THAT THE EXTERNALLY SCREW THREADED END OF THE ADJACENT SLEEVE ENGAGED THEREBY IS CAUSED TO GRIP, AND MAKE A SEAL FIT WITH THE ROD.
Claim 2
Dependent Claim
139 words
AN ELECTRIC INSULATOR COMPRISING A ROD OF RESIN BONDED GLASS FIBRE AND, OVER AT LEAST A MAJOR PART OF THE LENGTH OF SAID ROD, A PROTECTIVE COVERING BUILT UP OF A PLURALITY OF AXIALLY ALIGNED SHORT SLEEVES OF RELATIVELY NONTRACKING ELASTOMERIC POLYMERIC MATERIAL, EACH OF WHICH SLEEVS IS FLARED AT ONE END, SAID FLARE BEING INTERNALLY SCREW THREADED OVER A PART OF ITS LENGTH, AND IS EXTERNALLY SCREW THREADED AT ITS OTHER END, THE FLARED END OF EACH OF THE SLEEVES OVERLYING AND BEING IN SCREW THREADED ENGAGEMENT WITH THE EXTERNALY SCREW THREADED END OF AN ADJACENT SLEEVE AND THE INTERNALLY SCREW THREADED FLARE END OF EACH SLEEVE HAVING A TAPER OF SUCH AN ANGLE THAT THE EXTERNALLY SCREW THREADED END OF THE ADJACENT SLEEVE ENGAGED THEREBY IS CAUSED TO GRIP, AND MAKE A SEAL FIT WITH THE ROD.
References Cited (Backward Citations)
US1194957A
Cited
US1381189A
Cited
GB408225A
Cited
FR1121187A
Cited
GB915052A
Cited
GB878073A
Cited
GB914552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |