US4403103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-insulated transmission line having improved outer enclosure
Assignee: ABB Inc USA
•
Filing: 1982-02-17
•
Granted: 1983-09-06
•
Expires: 2002-02-17
Abstract
Abstract A gas-insulated transmission line includes an outer enclosure, an inner conductor insulatably supported within the outer conductor, and an insulating gas providing electrical insulation of the inner conductor. The outer enclosure includes a cylindrical insulating pipe or sheath with a separate electrostatic shield disposed on the sheath. The pressure containing function is separated from the electrostatic shielding function, thereby minimizing the use of the more expensive electrostatic shielding material for the pressure containing function.
Inventors
- 👤 Alan H. Cookson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:38
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/063
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
51 words
A gas-insulated transmission line comprising: an elongated, solid, electrically insulating outer casing having a longitudinal opening therethrough; a non-metallic, elongated tubular hollow pipe disposed in said outer casing opening, said outer casing reinforcing said pipe; an inner conductor insulatably supported in said pipe; and an insulating gas disposed within said pipe.
Claim 2
Dependent Claim
51 words
A gas-insulated transmission line comprising: an elongated, solid, electrically insulating outer casing having a longitudinal opening therethrough; a non-metallic, elongated tubular hollow pipe disposed in said outer casing opening, said outer casing reinforcing said pipe; an inner conductor insulatably supported in said pipe; and an insulating gas disposed within said pipe.
Claim 3
Dependent Claim
19 words
The transmission line according to claim 1 including a metallic shield disposed on the outer surface of said casing.
Claim 4
Dependent Claim
19 words
The transmission line according to claim 1 including an electrostatic shield disposed on the interior surface of said pipe.
Claim 5
Dependent Claim
17 words
The transmission line according to claim 3 wherein said electrostatic shield comprises an electrically conducting material layer.
Claim 6
Dependent Claim
17 words
The transmission line according to claim 3 wherein said electrostatic shield comprises an electrically semiconducting material layer.
Claim 7
Dependent Claim
17 words
The transmission line according to claim 1 wherein said casing is made of concrete or polymer-impregnated concrete.
References Cited (Backward Citations)
US4095040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-05 | 1987-03-07 | 1987-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-05 | 1991-03-07 | 1991-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-05 | 1995-03-07 | 1995-09-06 | $7700.00 | Window Closed / Lapsed |