US2823152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of air spaced electric cables
Assignee: Telegraph Construction and Maintenance Co Ltd
•
Filing: 1951-05-04
•
Granted: 1958-02-11
•
Expires: 1971-05-04
Abstract
No abstract record available.
Inventors
- 👤 Mildner Raymond Charles
- 👤 Lovelace Clive Edw Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:03
CPC Classifications
H; H01; H01B; H01B13/00; H01B13/06; H01B13/18; H01B13/20; H01B13/206; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/49117; Y10T29/49123
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
116 words
PROCEDURE IN MANUFACTURING AN ELECTRIC CONDUCTOR HAVING AN AIR SPACE INSULATION INCLUDING A HELICAL MEMBRANE INITIALLY IN THE FORM OF A CLOSELY WOUND HELIX HAVING ITS TURNS SUBSTANTIALLY IN CONTACT AND WITH A BORE OF A DIAMETER LESS THAN THE DIAMETER OF THE CONDUCTOR, CONSISTING IN ADVANCING THE CONDUCTOR AND IN SIMULTANEOUSLY LONGITUDINALLY STRETCHING SAID HELIX SUBSTANTIALLY IN A PATH AT AN ANGLE TO THE CONDUCTOR, TO SUCH AN EXTENT THAT THE INNER EDGE WILL BE OF A SIZE AND SO DISPOSED TO TIGHTLY CONTACT THE CONDUCTOR, IN ADVANCING THE HELIX, AND IN LAPPING THE HELIX WHILE ADVANCING AND SO STRETCHING ONTO THE CONDUCTOR AT THE ZONE OF INTERSECTION OF SAID PATH WITH THE ADVANCING CONDUCTOR.
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) | 1961-02-10 | 1961-08-12 | 1962-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-10 | 1965-08-12 | 1966-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-10 | 1969-08-12 | 1970-02-11 | $7700.00 | Window Closed / Lapsed |