Patent US3460533A successfully refreshed from Google Patents.
Patent US4484024A successfully refreshed from Google Patents.
US4484024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overcoated bulky sleeving and electrical insulation method
Assignee: Federal Mogul Systems Protection Group Inc
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Filing: 1984-02-15
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Granted: 1984-11-20
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Expires: 2004-02-15
Abstract
Abstract An electrically insulating, overcoated bulky sleeve is disclosed comprising a tubular sleeve prepared from bulky (i.e. low density, high surface area) continuous filament yarns and an overcoating. When an electrical conductor is positioned therewithin, the large surface area of the bulky yarns of the interior of the sleeve provides an intimate fit for an expanded range of conductor diameters. For applications where a void-free impregnation of the sleeve interior between the overcoating and the conductor is desired, the large interior surface area of these sleeves can promote retention of the impregnation composition. The overcoated sleeve can be expandable, deforming to allow pull-back and return or fold-over, and/or conforming to accept transitions in conductor diameter. The overcoated bulky sleeve can be employed in a method for electrically insulating a conductor, which method may further include an interstitial impregnation step.
Inventors
- 👤 William H. Bentley, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:47
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/32; H02G; H02G15/00; H02G15/08; H02G15/18; H02K15/00; H02K15/12
Claims Analysis
Total Claims: 36
Claim 1
Independent Claim
70 words
An overcoated bulky sleeve for electrical insulation of an electrical conductor comprising: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; and (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 2
Dependent Claim
70 words
An overcoated bulky sleeve for electrical insulation of an electrical conductor comprising: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; and (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 3
Dependent Claim
14 words
A sleeve according to claim 1, wherein the interthreaded sleeve comprises a braided sleeve.
Claim 4
Dependent Claim
14 words
A sleeve according to claim 1, wherein the interthreaded sleeve comprises a knitted sleeve.
Claim 5
Dependent Claim
16 words
A sleeve according to claim 2, wherein the continuous filament bulky yarn is an inorganic yarn.
Claim 6
Dependent Claim
14 words
A sleeve according to claim 4, wherein the inorganic yarn is a fiberglass yarn.
Claim 7
Dependent Claim
16 words
A sleeve according to claim 2, wherein the continuous filament bulky yarn is an organic yarn.
Claim 8
Dependent Claim
14 words
A sleeve according to claim 6, wherein the organic yarn is a polyester yarn.
Claim 9
Dependent Claim
16 words
A sleeve according to claim 3, wherein the continuous filament bulky yarn is an inorganic yarn.
Claim 10
Dependent Claim
14 words
A sleeve according to claim 8, wherein the inorganic yarn is a fiberglass yarn.
Claim 11
Dependent Claim
16 words
A sleeve according to claim 3, wherein the continuous filament bulky yarn is an organic yarn.
Claim 12
Dependent Claim
14 words
A sleeve according to claim 10, wherein the organic yarn is a polyester yarn.
Claim 13
Dependent Claim
20 words
A sleeve according to claim 1, wherein the density of the bulky yarn is from about 40% to about 60%.
Claim 14
Dependent Claim
20 words
A sleeve according to claim 12, wherein the density of the bulky yarn is from about 45% to about 55%.
Claim 15
Dependent Claim
20 words
A sleeve according to claim 9, wherein the density of the bulky yarn is from about 40% to about 60%.
Claim 16
Dependent Claim
20 words
A sleeve according to claim 14, wherein the density of the bulky yarn is from about 45% to about 55%.
Claim 17
Dependent Claim
13 words
A sleeve according to claim 5, wherein the bulky sleeve is diametrically expandable.
Claim 18
Dependent Claim
13 words
A sleeve according to claim 7, wherein the bulky sleeve is diametrically expandable.
Claim 19
Dependent Claim
13 words
A sleeve according to claim 9, wherein the bulky sleeve is diametrically expandable.
Claim 20
Dependent Claim
13 words
A sleeve according to claim 11, wherein the bulky sleeve is diametrically expandable.
Claim 21
Dependent Claim
12 words
A sleeve according to claim 1, wherein the overcoating is electrically insulating.
Claim 22
Dependent Claim
12 words
A sleeve according to claim 5, wherein the overcoating is electrically insulating.
Claim 23
Dependent Claim
12 words
A sleeve according to claim 7, wherein the overcoating is electrically insulating.
Claim 24
Dependent Claim
12 words
A sleeve according to claim 9, wherein the overcoating is electrically insulating.
Claim 25
Dependent Claim
12 words
A sleeve according to claim 11, wherein the overcoating is electrically insulating.
Claim 26
Dependent Claim
12 words
A sleeve according to claim 20, wherein the overcoating is a ceramic.
Claim 27
Dependent Claim
20 words
A sleeve according to claim 21, wherein the density of the bulky yarn is from about 40% to about 60%.
Claim 28
Dependent Claim
20 words
A sleeve according to claim 26, wherein the density of the bulky yarn is from about 45% to about 55%.
Claim 29
Dependent Claim
96 words
An electrical apparatus having at least one electrical conductor insulated with a bulky sleeve comprising: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve. (c) an impregnation composition which is electrically insulating and substantially fills the bulky interior of the sleeve between the electrical conductor and the overcoating.
Claim 30
Dependent Claim
96 words
An electrical apparatus having at least one electrical conductor insulated with a bulky sleeve comprising: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve. (c) an impregnation composition which is electrically insulating and substantially fills the bulky interior of the sleeve between the electrical conductor and the overcoating.
Claim 31
Dependent Claim
15 words
An electrical apparatus according to claim 28, wherein the impregnation composition comprises a curable polymer.
Claim 32
Independent Claim
109 words
A method for electrically insulating an elongate electrical conductor, comprising positioning at least a portion of a bulky sleeve around the elongate electrical conductor and introducing an electrically insulating impregnation composition between the electrical conductor and the sleeve to substantially fill the interior of the sleeve, wherein the bulky sleeve comprises: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; and (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 33
Independent Claim
109 words
A method for electrically insulating an elongate electrical conductor, comprising positioning at least a portion of a bulky sleeve around the elongate electrical conductor and introducing an electrically insulating impregnation composition between the electrical conductor and the sleeve to substantially fill the interior of the sleeve, wherein the bulky sleeve comprises: (a) a tubular sleeve which has a bulky interior and which is interthreaded from bulky, continuous filament yarn having a density of about 70% or less of the density of non-bulky yarn of the same composition and diameter; and (b) an overcoating which is coated onto and substantially covers and seals the exterior surface of the tubular sleeve.
Claim 34
Dependent Claim
14 words
A method according to claim 30, wherein the impregnation composition comprises a curable polymer.
Claim 35
Dependent Claim
17 words
A method according to claim 31, which further comprises the step of allowing the polymer to cure.
Claim 36
Dependent Claim
42 words
A method according to claim 30, which further comprises the steps of temporarily pulling back the sleeve along the electrical conductor, interconnecting the conductor with an electrical apparatus, and repositioning the sleeve along the electrical conductor after interconnection with the electrical apparatus.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |