US3828119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature resistant electrical conductor, and method of producing same
Assignee: Vulkor Inc
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Filing: 1973-09-21
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Granted: 1974-08-06
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Expires: 1993-09-21
Abstract
Abstract A heat resistant insulated electrical wire comprising a metallic conductor, a polymeric organic insulation surrounding the conductor and an overlying covering of a composite body of heat resistant carded staple fiber. The composite body of carded fiber covering the polymeric insulation is impregnated with a bonding agent and comprises at least two layers of carded fiber slivers with an intermediate strand matrix of heat shrunk organic filaments contracted around the inner layer of sliver of carded fiber about the polymeric insulation and thereby firmly gripping the polymeric insulation and securely affixing the bonded composite body of carded staple fiber to the insulated conductor. The disclosure also includes a method of producing the electrical wire product.
Inventors
- 👤 J Warburton
- 👤 H Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:16
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/292; Y; Y10; Y10S; Y10S174/00; Y10S174/08
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
40 words
The high temperature resistant insulated electrical wire of claim 1, wherein the heat resistant carded staple fiber is selected from the group consisting of asbestos fiber, silica fiber, alumina silica fiber, glass fiber, high temperature polyamide fiber, and mixtures thereof.
Claim 2
Dependent Claim
32 words
The high temperature resistant insulated electrical wire of claim 1, wherein the intermediate strand matrix of at least one heat shrunk filament comprises spaced turns of at least one helically wound filament.
Claim 3
Dependent Claim
28 words
The high temperature resistant insulated electrical wire of claim 1, wherein the intermediate strand matrix comprises a plurality of heat shrunk filaments comprising an open braid of filaments.
Claim 4
Dependent Claim
20 words
The high temperature resistant insulated electrical wire of claim 1, wherein the bonding heat resistant impregnant comprises a halogenated rubber.
Claim 5
Dependent Claim
21 words
The high temperature resistant insulated electrical wire of claim 1, wherein the bonding heat resistant impregnant comprises a methyl phenyl polysiloxane.
Claim 6
Dependent Claim
112 words
A high temperature resistant insulated electrical wire comprising the combination of: a. a metallic conductor; b. a silicone elastomer insulation surrounding said metallic conductor; and, c. a composite body of carded asbestos fiber bonded together with a heat resistant impregnant overlying said silicone elastomer insulation, said composite body of asbestos fiber comprising at least two layers of carded asbestos and having an intermediate strand matrix of at least one heat shrunk polyester filament contracted around at least one layer of the carded asbestos fiber and the silicone insulation and conductor for thereby firmly gripping the silicone insulation surrounding the conductor and securing the bonded body of carded asbestos to the silicone insulation.
Claim 7
Dependent Claim
34 words
The high temperature resistant insulated electrical wire of claim 7, wherEin the intermediate strand matrix of at least one heat shrunk polyester filament comprises spaced turns of at least one helically wound polyester filament.
Claim 8
Dependent Claim
30 words
The high temperature resistant insulated electrical wire of claim 7, wherein the intermediate strand matrix comprises a plurality of heat shrunk polyester filaments comprising an open braid of polyester filaments.
Claim 9
Dependent Claim
20 words
The high temperature resistant insulated electrical wire of claim 7, wherein the bonding heat resistant impregnant comprises a chlorinated rubber.
Claim 10
Dependent Claim
21 words
The high temperature resistant insulation electrical wire of claim 7, wherein the bonding heat resistant impregnant comprises a methyl phenyl polysiloxane.
Claim 11
Independent Claim
193 words
A method of manufacturing a high temperature resistant insulated electrical wire consisting of an assemblage including a metallic conductor, a surrounding dielectric polymeric insulation having slick surface characteristics, and an overlying composite body of bonded heat resistant carded staple fiber, comprising the steps of: a. forming a dielectric polymeric insulation about a metallic conductor; b. applying a sliver of carded heat resistant staple fiber around said polymeric insulation on the conductor; c. forming a strand matrix of at least one heat shrinkable organic filament surrounding said sliver of carded fiber around the polymeric insulation; d. applying another sliver of carded heat resistant staple fiber over said strand matrix of at least one filament surrounding the sliver of carded fiber around the polymeric insulation; e. impregnating the slivers of carded staple fiber with a bonding impregnant in liquid form; and, f. heating the resultant assemblage of conductor, surrounding polymeric insulation and overlying body of impregnated carded staple fiber to contract the strand matrix of at least one heat shrinkable organic filament around said assemblage for thereby firmly gripping the polymeric insulation and securing the impregnate bonded body of carded fiber to the polymeric insulation.
Claim 12
Dependent Claim
48 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 12, wherein the strand matrix of at least one heat shrinkable organic filament is formed by helically winding at least one filament in spaced turns around the sliver of carded fiber on the polymeric insulation.
Claim 13
Dependent Claim
47 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 12, wherein the strand matrix comprises a plurality of heat shrinkable organic filaments and is formed by braiding the filaments around the sliver of carded fiber on the polymeric insulation in an open pattern.
Claim 14
Dependent Claim
27 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 12, wherein the slivers of carded staple fiber are impregnated with a halogenated rubber.
Claim 15
Dependent Claim
21 words
Th high temperature resistant insulated electrical wire of claim 12, wherein the bonding heat resistant impregnant comprises a methyl phenyl polysiloxane.
Claim 16
Independent Claim
185 words
A method of manufacturing a high temperature resistant insulated electrical wire consisting of an assemblage including a metallic conductor, a surrounding dielectric silicone elastomer insulation, and an overlying composite body of bonded carded asbestos fiber comprising the steps of: a. forming a silicone elastomer insulation about a metallic conductor; b. applying a silver of carded asbestos fiber around said silicone insulation on the conductor; c. forming a strand matrix of at least one heat shrinkable polyester filament surrounding said sliver of carded asbestos fiber around the silicone insulation. d. applying another sliver of carded asbestos fiber over said strand matrix of polyester filaments surrounding the sliver of carded asbestos fiber around the silicone insulation; e. impregnating the slivers of carded asbestos fiber with a bonding impregnant in lquid form; and, f. heating the resultant assemblage of conductor, surrounding silicone insulation and overlyIng body of impregnated carded asbestos fiber to contract the strand matrix of at least one heat shrinkable polyester filament around the assemblage for thereby firmly gripping the silicone insulation and securing the impregnate bonded body of carded asbestos fiber to the silicone insulation.
Claim 17
Dependent Claim
49 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 17, wherein the strand matrix of at least one heat shrinkable polyester filament is formed by helically winding at least one filament in spaced turns around the sliver of carded asbestos fiber on the silicone insulation.
Claim 18
Dependent Claim
48 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 17, wherein the strand matrix comprises a plurality of heat shrinkable polyester filaments and is formed by braiding the filaments around the sliver of carded asbestos fiber on the silicone insulation in an open pattern.
Claim 19
Dependent Claim
27 words
The method of manufacturing a high temperature resistant insulated electrical wire of claim 17, wherein the slivers of carded asbestos fiber are impregnated with a chlorinated rubber.
Claim 20
Dependent Claim
27 words
The method of manufacturing a high temperature resistant electrical wire of claim 17, wherein the slivers of carded asbestos fiber are impregnated with a methyl phenyl polysiloxane.
References Cited (Backward Citations)
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 |