Patent EP0147978A2 successfully refreshed from Google Patents.
EP0147978A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrically insulating articles
Assignee: Raychem Ltd
•
Filing: 1984-12-12
•
Granted: —
•
Expires: 2004-12-12
Abstract
Abstract A tubular article has an outer component of insulating material having a convoluted outer surface, and in inner component of stress grading material. In another embodiment, a tubular article has an outer component of insulating material having an outer surface that is convoluted along part of its length and shedded along another part of its length. The articles may be of heat-shrinkable polymeric material. The articles are particularly useful for terminating high voltage electric cables, and in the manufacture of electrical insulators.
Inventors
- 👤 Alan Duncan Atkins
- 👤 Kenneth Elliott
- 👤 John Sidney Thomas Looms
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 17:40
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/02; H02G15/06; H02G15/064; H02G15/068; H01; H01B; H01B17/00; H01B17/32; H01B17/42; H01C; H01C7/00; H01C7/10; H01C7/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
31 words
1 . A generally tubular article comprising an outer component of electrically insulating material having a convoluted outer surface extending longitudinally thereof, and an inner component of electrically stress grading material.
Claim 2
Dependent Claim
31 words
1 . A generally tubular article comprising an outer component of electrically insulating material having a convoluted outer surface extending longitudinally thereof, and an inner component of electrically stress grading material.
Claim 3
Dependent Claim
20 words
An article according to Claim 1, wherein said convoluted outer surface extends along substantially the whole length of the article.
Claim 4
Dependent Claim
35 words
A generally tubular article comprising an outer component of electrically insulating.material having an outer surface that is convoluted along part of its length and that has a shedded configuration along another part of its length.
Claim 5
Dependent Claim
35 words
A generally tubular article comprising an outer component of electrically insulating.material having an outer surface that is convoluted along part of its length and that has a shedded configuration along another part of its length.
Claim 6
Dependent Claim
15 words
An article according to Claim 3, comprising an inner component of electrically stress grading material.
Claim 7
Dependent Claim
21 words
An article according to claim 1, 2 or 4 wherein the stress grading component is substantially co-terminous with the insulating component.
Claim 8
Dependent Claim
19 words
An article according to claim 1, 2, 4 or 5, wherein said two components are integral with one another.
Claim 9
Dependent Claim
19 words
An article according to Claim 1,3 or 4, wherein at least part of said outer surface is substantially cylindrical.
Claim 10
Dependent Claim
18 words
An article according to any preceding claim, wherein the material forming said outer surface is substantially electrically non-tracking.
Claim 11
Dependent Claim
18 words
An article according to any preceding claim, wherein at least the insulating component is made from polymeric material.
Claim 12
Dependent Claim
12 words
An article according to claim 9, wherein the polymeric material is recoverable.
Claim 13
Dependent Claim
12 words
An article according to Claim 10, wherein the recoverable material is heat-shrinkable.
Claim 14
Dependent Claim
27 words
An article according to claim 10 or 11, wherein the insulating component is arranged to have a convoluted outer surface at least after recovery of said component.
Claim 15
Dependent Claim
18 words
An article according to any preceding claim, wherein the inner surface of the insulating component is substantially smooth.
Claim 16
Dependent Claim
13 words
An electric power cable terminated by an article according to any preceding claim.
Claim 17
Dependent Claim
14 words
An electric insulator comprising an article according to any of Claims 1 to 13.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.