US3828114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resin sleeve with embedded stress control screen for high-voltage cables
Assignee: Pirelli and C SpA
•
Filing: 1973-02-15
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Granted: 1974-08-06
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Expires: 1993-02-15
Abstract
Abstract A sleeve of epoxy resin for use in a joint between high voltage electric cables or in a sealing end for such a cable, the sleeve having embedded therein, around the part of the cable to be electrically screened, a conductive screen embedded in semiconductive, epoxy resin.
Inventors
- 👤 P Priaroggia
- 👤 G Maschio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:33
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/10; H02G15/103; H02G15/02; H02G15/06; H02G15/064; H02G15/068; H02G15/18; H02G15/184
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
21 words
An accessory as set forth in claim 1, in which said body has a resistivity less than 108 ohms per meter.
Claim 2
Dependent Claim
22 words
An accessory as set forth in claim 1, wherein said body comprises a synthetic resin having admixed therein particles of conductive material.
Claim 3
Dependent Claim
31 words
An accessory as set forth in claim 3, wherein said particles are selected from the group consisting of carbon black, graphite and metal particles and mixtures of at least two thereof.
Claim 4
Dependent Claim
25 words
An accessory as set forth in claim 1, wherein the synthetic resin of said sleeve is the same as the synthetic resin of said body.
Claim 5
Dependent Claim
16 words
An accessory as set forth in claim 5, wherein said synthetic resin is an epoxy resin.
Claim 6
Dependent Claim
19 words
An accessory as set forth in claim 1, wherein at least one end of said stress-control means is rounded.
Claim 7
Dependent Claim
30 words
An accessory as set forth in claim 1, wherein said body is also between at least one end and the inner surfaces of said stress control means and said sleeve.
References Cited (Backward Citations)
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Cited
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US2967899A
Cited
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Cited
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Cited
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Cited
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Cited
US3504106A
Cited
US3761602A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |