US4366464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition cables
Assignee: Denso Corp
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Filing: 1981-02-02
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Granted: 1982-12-28
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Expires: 2001-02-02
Abstract
Abstract A high voltage ignition cable is described comprising a resistive-conductor core, an insulator layer provided thereon, and a jacket, wherein said insulator layer comprises a cross-linked product of a polymer composition consisting of crystalline polyethylene and a non-crystalline olefin polymer.
Inventors
- 👤 Yoshimi Miyamoto
- 👤 Keiichi Kojima
- 👤 Yasuo Toriumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:25
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/0063; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
43 words
A high voltage ignition cable having a low electrostatic capacity comprising a resistive-conductor core, an insulator layer provided thereon, and a jacket, wherein said insulator layer comprises a cross-linked product of a blended composition consisting of crystalline polyethylene and a non-crystalline olefin polymer.
Claim 2
Dependent Claim
43 words
A high voltage ignition cable having a low electrostatic capacity comprising a resistive-conductor core, an insulator layer provided thereon, and a jacket, wherein said insulator layer comprises a cross-linked product of a blended composition consisting of crystalline polyethylene and a non-crystalline olefin polymer.
Claim 3
Dependent Claim
43 words
A high voltage ignition cable having a low electrostatic capacity as in claim 1 wherein the non-crystalline olefin polymer is an ethylene propylene rubber and the blend ratio, by weight, of the polyethylene to the ethylene propylene rubber is from 80/20 to 50/50.
Claim 4
Dependent Claim
41 words
A high voltage ignition cable having a low electrostatic capacity as in claim 1 wherein the non-crystalline olefin polymer is an ethylene-α-olefin copolymer and the blend ratio, by weight, of the polyethylene to the ethylene-α-olefin copolymer is from 80/20 to 50/50.
Claim 5
Dependent Claim
50 words
A high voltage ignition cable having a low electrostatic capacity as in claim 1 wherein the resistive-conductor core is prepared by using an aromatic polyamide fiber bundle as a tension member and by coating thereon a semiconductive paint so that the outer diameter is of a maximum of 1.2 mm
Claim 6
Dependent Claim
52 words
A high voltage ignition cable having a low electrostatic capacity as in claim 1 wherein the resistive-conductor core prepared by coating a semiconductive paint on the tension member comprising an aromatic polyamide fiber bundle is extrusion coated with a semiconductive material on the semiconductive paint layer with a stripping layer interposed therebetween.
Claim 7
Dependent Claim
42 words
A high voltage ignition cable having a low electrostatic capacity as in claim 4 wherein the tension member of the resistive-conductor core is prepared by twining or intertwining a plurality of aromatic polyamide fiber bundles around a central aromatic polyamide fiber bundle.
Claim 8
Dependent Claim
24 words
A high voltage ignition cable having a low electrostatic as in claim 1 wherein the insulator layer is cross-linked by irradiation with electron beam.
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) | 1985-12-27 | 1986-06-28 | 1986-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-12-27 | 1990-06-28 | 1990-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-12-27 | 1994-06-28 | 1994-12-28 | $7700.00 | Window Closed / Lapsed |