EP0780949B1
Expired / Lapsed
EP
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Universal cable adapter, cable joint using the adapter and method of making the same
Assignee: 3M Co
•
Filing: 1996-12-20
•
Granted: 2000-09-20
•
Expires: 2016-12-20
Abstract
No abstract record available.
Inventors
- 👤 Frank 3M Laboratories Freiwald (Europe) Gmbh
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 18:56
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/02; H02G15/06; H02G15/064; H02G15/068; H01; H01R; H01R4/00; H01R4/70; H02G15/08; H02G15/10; H02G15/103; H02G15/18; H02G15/182; H02G15/1826; H02G15/1833; H02G15/184
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
129 words
A tubular cable adapter (10) for use in jointing and/or terminating
medium voltage cables, comprising a first elastic insulating tubular member
(8), said first elastic insulating tubular member (8) having a substantially
smooth outer surface; a second elastic conductive tubular member (6), and tubular support core
means (4) for maintaining the first and second tubular members (6, 8) in a
radially expanded state, said tubular core means (4) being removable from
said first and second tubular members (6, 8), wherein said first tubular
member (8) comprises an outer layer having an outer surface extending
substantially parallel to said tubular core means (4), characterized in that said
first tubular member (8) further comprises an insulating conformable material
(12) interposed between said outer layer and said hollow tubular core means
(4).
Claim 2
Dependent Claim
33 words
Cable adapter according to claim 1, wherein said conformable material
(12) is a viscoelastic, self-fusing or self-amalgamating conformable layer
extending concentrically and substantially over the whole length of said first
tubular member (8).
Claim 3
Dependent Claim
29 words
Cable adapter according to claim 1 or 2, wherein a concentric layer of
conductive sealant is interposed between said second tubular member (6)
and said tubular core means (4).
Claim 4
Dependent Claim
22 words
Cable adapter according to any of claims 1 to 3, wherein said second
tubular member (6) overlays said first tubular member (8).
Claim 5
Dependent Claim
53 words
Cable adapter according to any of claims 1 to 4, wherein said
conformable material (12) has a modulus of at most 5 Mpa as measured on
an oscillation rheometer in the ranges, 10 to 40 °C, oscillation amplitudes
between 0.02 % and 10 % and frequency of oscillation between 0.016 and
1.6 Hz.
Claim 6
Dependent Claim
27 words
Cable adapter according to any of claims 1 to 5, wherein the
expansion ratio of said first and second tubular members (6, 8) is at least 3:1.
Claim 7
Dependent Claim
26 words
Cable adapter according to claims 5 or 6, wherein the permanent set
of said first and second tubular members (6, 8) is less than 30 %.
Claim 8
Dependent Claim
29 words
Cable adapter according to any of claims 5 to 7, wherein the electrical
conductivity of said conductive tubular member (6) after recovery is
substantially the same as before expansion.
Claim 9
Dependent Claim
19 words
Cable adapter according to any of the preceding claims, wherein the
conformable material (12) is based on polyurethane rubber.
Claim 10
Dependent Claim
30 words
Cable adapter according to any of the preceding claims, wherein said
first tubular and/or said second tubular member (6, 8) is made of vinyl-methyl
silicone rubber vulcanized at high temperature.
Claim 11
Dependent Claim
106 words
A tubular cable adapter (10) for use in jointing and/or terminating
medium voltage cables, comprising a first insulating tubular member (8)
having a substantially smooth outer surface; a second elastic conductive tubular member (6), and tubular support core
means (4) for maintaining the first and second tubular members (6, 8) in a
radially expanded state, said tubular core means (4) being removable from
said first and second tubular members (6, 8), wherein said first tubular
member (8) has an outer surface extending substantially parallel to said
hollow tubular core means (4) characterized in that said first tubular member
(8) comprises an insulating, elastic and conformable material.
Claim 12
Dependent Claim
21 words
Cable adapter (10) according to claim 11, wherein said insulating,
elastic and conformable material (12) is a partially cross-linked polyurethane
rubber.
Claim 13
Dependent Claim
38 words
A jointing device for use in jointing medium voltage cables comprising
a cable adapter (10) according to any of claims 1 to 12 moulded into a
moulded joint sleeve comprising elastomeric insulating material and an outer
conductive layer.
Claim 14
Dependent Claim
51 words
A kit for use in making a straight joint between two electric cables,
each cable having either plastic or paper insulated conductors, comprising at
least one cable adapter (10) according to any of claims 1 to 12 and a
moulded joint sleeve comprising elastomeric insulating material and an outer
conductive layer.
Claim 15
Dependent Claim
45 words
A straight joint between two electric cables, each cable having either
plastic or paper insulated conductors comprising: at least one cable adapter
(10) according to any of claims 1 to 12 and a moulded joint sleeve comprising
elastomeric insulating material and an outer conductive layer.
Claim 16
Dependent Claim
34 words
Method for jointing or terminating a medium voltage cable including
the step of installing an adapter (10) in accordance with any of the claims 1 to
12 to prepare the ends of said cable.
Claim 17
Dependent Claim
15 words
Method according to claim 16, wherein the cable insulation surface is
irregularly shaped or uneven.
References Cited (Backward Citations)
No citation records indexed.
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