Patent US4375632A successfully refreshed from Google Patents.
US4375632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition cables
Assignee: Denso Corp
•
Filing: 1981-02-02
•
Granted: 1983-03-01
•
Expires: 2001-02-02
Abstract
Abstract A high voltage ignition cable is described comprising a resistive-conductor core, an insulator layer, and a jacket, wherein the resistive-conductor core comprises a tension member, a semiconductive internal layer, a semiconductive external layer, and a stripping layer interposed between the semiconductive internal layer and the semiconductive external layer.
Inventors
- 👤 Yoshimi Miyamoto
- 👤 Keiichi Kojima
- 👤 Yasuo Toriumi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:17
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/0063; H01B7/17; H01B7/18; H01B7/182
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
A high voltage ignition cable comprising in order an innermost resistive-conductor core, an insulator layer, and a jacket, wherein the resistive-conductor core comprises a tension member having thereon, in order, a semiconductive internal layer and a semiconductive external layer, wherein a conductive stripping layer is interposed between the semiconductive internal layer and the semiconductive external layer.
Claim 2
Dependent Claim
56 words
A high voltage ignition cable comprising in order an innermost resistive-conductor core, an insulator layer, and a jacket, wherein the resistive-conductor core comprises a tension member having thereon, in order, a semiconductive internal layer and a semiconductive external layer, wherein a conductive stripping layer is interposed between the semiconductive internal layer and the semiconductive external layer.
Claim 3
Dependent Claim
34 words
A high voltage ignition cable as in claim 1, wherein the outer diameter of the resistive-conductor core is 1.2 mm and the tension member is of a maximum of an aromatic polyamide fiber bundle.
Claim 4
Dependent Claim
23 words
A high voltage ignition cable as in claim 1, wherein the semiconductive external layer is formed by extrusion coating of a semiconductive rubber.
Claim 5
Dependent Claim
16 words
A high voltage ignition cable as in claim 1, wherein the insulator layer comprises cross-linked polyethylene.
Claim 6
Dependent Claim
24 words
A high voltage ignition cable as in claim 1, wherein the semiconductive external layer is formed by extrusion coating of a semiconductive plastic composition.
Claim 7
Dependent Claim
20 words
A high voltage ignition cable as in claim 1, wherein the insulator layer comprises a cross-linked polymer blend containing polyethylene.
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) | 1986-02-28 | 1986-08-30 | 1987-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-02-28 | 1990-08-30 | 1991-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-02-28 | 1994-08-30 | 1995-03-01 | $7700.00 | Window Closed / Lapsed |