US4820012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric wire
Assignee: MEC LOBORATORIES KK
•
Filing: 1987-11-04
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Granted: 1989-04-11
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Expires: 2007-11-04
Abstract
Abstract An electric wire having an insulating core rope made of aromatic polyamide fiber, an electric insulating intermediate layer of high heat resistant material which covers the electrical insulating core and an outer conductor which surrounds the intermediate core and is composed of wound conductive wires, elongated conductive pieces or a single bent plate. A pipe which may contain an optical fiber may be embedded in the core and the insulating core may include a heat generator located therein.
Inventors
- 👤 Masaki Asai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:46
CPC Classifications
G; G02; G02B; G02B6/00; G02B6/44; G02B6/4401; G02B6/4415; G02B6/4416; G02B6/4422; H; H01; H01B; H01B5/00; H01B5/08; H01B5/10; H01B5/102; H01B5/105; H01B5/108
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
56 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electrical insulating intermediate layer which covers the electrical insulating core, and an outer core conductor which surrounds the intermediate layer, said outer conductor being composed of conductive elongated pieces which are located on the intermediate layer to form a tubular layer.
Claim 2
Dependent Claim
56 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electrical insulating intermediate layer which covers the electrical insulating core, and an outer core conductor which surrounds the intermediate layer, said outer conductor being composed of conductive elongated pieces which are located on the intermediate layer to form a tubular layer.
Claim 3
Dependent Claim
54 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electric insulating intermediate layer which covers the electrical insulating core, and an outer conductor which surrounds the intermediate layer, said outer conductor being composed of conductive wires which are wound on the intermediate layer to form a tubular layer.
Claim 4
Dependent Claim
54 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electric insulating intermediate layer which covers the electrical insulating core, and an outer conductor which surrounds the intermediate layer, said outer conductor being composed of conductive wires which are wound on the intermediate layer to form a tubular layer.
Claim 5
Dependent Claim
56 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electrical insulating intermediate layer which covers the electrical insulating core, and an outer conductor which surrounds the intermediate layer, said outer conductor being composed of a single conductive plate which is bent to form a tubular layer on the intermediate layer.
Claim 6
Dependent Claim
56 words
An electric wire comprising an electrical insulating core rope made of aromatic polyamide fiber, an electrical insulating intermediate layer which covers the electrical insulating core, and an outer conductor which surrounds the intermediate layer, said outer conductor being composed of a single conductive plate which is bent to form a tubular layer on the intermediate layer.
Claim 7
Dependent Claim
24 words
An electric wire according to claim 1, 2 or 3 wherein said intermediate layer is made of a material having a high heat resistance.
Claim 8
Dependent Claim
20 words
An electric wire according to claim 1, 2 or 3 further comprising a heat generator located in the isulating core.
Claim 9
Dependent Claim
19 words
An electric wire according to claim 1, 2 or 3 wherein said insulating core has a pipe embedded therein.
Claim 10
Dependent Claim
16 words
An electrical wire according to claim 6, further comprising an optical fiber located in the pipe.
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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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |