EP0077665A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Electrical insulation sleeve
Assignee: Federal Mogul Systems Protection Group Inc
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Filing: 1982-10-15
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Granted: —
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Expires: 2002-10-15
Abstract
Abstract An electrically insulating, overcoated bulky sleeve comprises a tubular sleeve (10), prepared from bulky (i.e. low density, high surface area) continuous filament yarns, and having an overcoating (14). When an electrical conductor (18) is positioned therewithin, the large surface area of the bulky yarns of the interior of the sleeve (10) provides an intimate fit for an expanded range of conductor (18) diameters. Preferably an impregnation composition (24) is introduced between the overcoating (14) and the conductor (18), the large interior surface area of the sleeves retaining the impregnation composition (24) to provide a void free structure. The overcoated sleeve (16) is preferably deformable to allow pull-back and return or fold-over, and/or is conformable to accept transitions in conductor diameter.
Inventors
- 👤 William H. Bentley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:23
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; D; D04; D04C; D04C1/00; D04C1/02; H02G; H02G15/00; H02G15/08; H02G15/18; H02K15/00; H02K15/12; D10; D10B; D10B2101/00; D10B2101/02; D10B2101/06; D10B2401/00; D10B2401/06; D10B2401/061; D10B2403/00; D10B2403/01; D10B2403/011; D10B2403/0112; D10B2505/00; D10B2505/12
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
52 words
A bulky sleeve for electrical insulation of an electrical conductor comprising a tubular sleeve (10) having a bulky interior (12), the sleeve being interthreaded, preferably braided or knitted, bulky, continuous filament yarns and an overcoating (14) which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 2
Dependent Claim
52 words
A bulky sleeve for electrical insulation of an electrical conductor comprising a tubular sleeve (10) having a bulky interior (12), the sleeve being interthreaded, preferably braided or knitted, bulky, continuous filament yarns and an overcoating (14) which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 3
Dependent Claim
19 words
A sleeve according to Claim 1, wherein the continuous filament bulky yarns are inorganic yarns, preferably glass fibre yarns.
Claim 4
Dependent Claim
18 words
A sleeve according to Claim 1, wherein the continuous filament bulky yarns are organic yarns preferably polyester yarns.
Claim 5
Dependent Claim
20 words
A sleeve according to Claim 1,2 or--3, wherein the tubular sleeve or the overcoating (14) or both are electrical insulating.
Claim 6
Dependent Claim
15 words
A sleeve according to any preceding Claim, wherein the overcoated sleeve (16) is diametrically expandable.
Claim 7
Dependent Claim
33 words
A sleeve according to any preceding claim, wherein the overcoating (14) comprises a polymer or a ceramic, preferably an acrylic polymer or a vinyl polymer or a silicone polymer or a urethane polymer.
Claim 8
Dependent Claim
71 words
A sleeve according to any preceding claim, wherein the bulky yarns have a density of about 70% or less of the density of non-bulky yarns of the same composition preferably a density of from about 40% to about 60% of the density of non-bulky yarns of the same composition and especially preferably a density of from about 45% to about 55% of the density of non-bulky yarns of the same composition.
Claim 9
Dependent Claim
24 words
An electrical apparatus comprising at least one electrical conductor (18) having a sleeve according to any preceding claim surrounding and intimately contacting said conductor.
Claim 10
Dependent Claim
32 words
An electrical apparatus according to Claim 8, comprising an electrically insulating impregnation composition (24) positioned substantially to fill the interior of the sleeve between the electrical conductor (18) and the overcoating (14).
Claim 11
Dependent Claim
32 words
An electrical apparatus according to Claim 9, wherein the impregnation composition (24) comprises a curable polymer preferably an epoxy polymer or a phenolic polymer or a urethane polymer or a polyester polymer.
Claim 12
Independent Claim
57 words
A method for electrically insulating an elongate electrical conductor (18), comprising positioning at least a portion of a bulky sleeve according to any one of Claims 1 to 7 around the elongate conductor (18), the sleeve having an inside diameter which allows intimate contact of the interior of the sleeve with the exterior of the electrical conductor.
Claim 13
Dependent Claim
29 words
A method according to Claim 11, comprising substantially filling the interior of the sleeve by introducing an electrically insulating impregnation composition (24) between the electrical conductor and the overcoating.
Claim 14
Dependent Claim
30 words
A method according to Claim 12, wherein the step of filling the interior of the sleeve by introducing an electrically insulating impregnation composition (24) comprises a vacuum/ pressure impregnation process.
Claim 15
Dependent Claim
28 words
A method according to Claim 12 or 13, wherein the ) impregnation composition (24) comprises a curable polymer, and which further comprises the step of curing the polymer.
References Cited (Backward Citations)
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