Patent US3291897A successfully refreshed from Google Patents.
US3291897A
Expired / Lapsed
US
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Electrically conducting rope
Assignee: Bramley & Wellesley Ltd
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Filing: 1964-01-10
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Granted: 1966-12-13
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Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 Bramley Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:07
CPC Classifications
H; H01; H01B; H01B5/00; H01B5/008; H05; H05C; H05C1/00; Y; Y10; Y10S; Y10S57/00; Y10S57/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
AN ELECTRICAL CURRENT CONDUCTOR COMPRISING SEVERAL PLIES TWISTED TOGETHER, EACH PLY CONSISTING OF A NUMBER OF FILAMENTS, AT LEAST ONE OF THE FILAMENTS OF AT LEAST ONE PLY BEING A METALLIC CONDUCTOR AND AT LEAST ONE BEING NON-METALLIC, THE FILAMENTS OF EACH PLY WHICH COMPRISES A METALLIC CONDUCTOR BEING SO TWISTED TOGETHER THAT THE METALLIC CONDUCTOR LIES EXPOSED ON THE SURFACE OF THE PLY AT INTERVALS DETERMINED BY THE AMOUNT OF TWIST IMPARTED TO THE PLY, WHEREIN THE RATIO OF THE TWIST USED IN JOINING THE PLIES TO THE PLY TWIST IS EQUAL TO THE RATIO OF THE
Claim 2
Dependent Claim
98 words
AN ELECTRICAL CURRENT CONDUCTOR COMPRISING SEVERAL PLIES TWISTED TOGETHER, EACH PLY CONSISTING OF A NUMBER OF FILAMENTS, AT LEAST ONE OF THE FILAMENTS OF AT LEAST ONE PLY BEING A METALLIC CONDUCTOR AND AT LEAST ONE BEING NON-METALLIC, THE FILAMENTS OF EACH PLY WHICH COMPRISES A METALLIC CONDUCTOR BEING SO TWISTED TOGETHER THAT THE METALLIC CONDUCTOR LIES EXPOSED ON THE SURFACE OF THE PLY AT INTERVALS DETERMINED BY THE AMOUNT OF TWIST IMPARTED TO THE PLY, WHEREIN THE RATIO OF THE TWIST USED IN JOINING THE PLIES TO THE PLY TWIST IS EQUAL TO THE RATIO OF THE
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) | 1969-12-12 | 1970-06-13 | 1970-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-12 | 1974-06-13 | 1974-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-12 | 1978-06-13 | 1978-12-13 | $7700.00 | Window Closed / Lapsed |