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US4810577A
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US
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Heat and oil-resistant electric insulated wire
Assignee: Kurabe Industrial Co Ltd
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Filing: 1987-01-12
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Granted: 1989-03-07
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Expires: 2007-01-12
Abstract
Abstract A heat and oil-resistant electric insulated wire comprises a conductor coated with an insulating layer which is formed of a vinylidene fluoride-based fluororubber and a silicone rubber added thereto. The amount of silicone rubber added is in a range of 2 to 30 parts by weight, preferably 5 to 20 parts by weight per 100 parts of said fluororubber, said fluororubber being a vinylidene fluoride-propylene hexafluoride copolymer and/or a vinylidene fluoride-propylene hexafluoride-ethylene tetrafluoride terpolymer.
Inventors
- 👤 Norio Ikegaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:26
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/292; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445; H01B7/28; H01B7/2806; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2962
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
76 words
A heat and oil-resistant electric wire, comprising a conductor coated with a strippable insulating layer consisting essentially of a vinylidene fluoride-based fluororubber having a silicone rubber added thereto in an amount of 2 to 30 parts by weight per 100 parts of said fluororubber thereby preventing adhesion of the insulating layer to the conductor, said fluororubber being selected from the group consisting of a vinylidene fluoride-propylene hexafluoride copolymer, vinylidene fluoride-propylene hexafluoride-ethylene tetrafluoride terpolymer, and mixtures thereof.
Claim 2
Dependent Claim
76 words
A heat and oil-resistant electric wire, comprising a conductor coated with a strippable insulating layer consisting essentially of a vinylidene fluoride-based fluororubber having a silicone rubber added thereto in an amount of 2 to 30 parts by weight per 100 parts of said fluororubber thereby preventing adhesion of the insulating layer to the conductor, said fluororubber being selected from the group consisting of a vinylidene fluoride-propylene hexafluoride copolymer, vinylidene fluoride-propylene hexafluoride-ethylene tetrafluoride terpolymer, and mixtures thereof.
Claim 3
Dependent Claim
42 words
A heat and oil-resistant electric insulated wire according to claim 1, wherein said silicone rubber comprises at least one rubber selected from the group consisting of a ferrosilicone rubber, a methylphenyl silicone rubber, a dimethyl silicone rubber and a methylvinyl silicone rubber.
Claim 4
Dependent Claim
35 words
A heat and oil-resistant electric insulated wire according to claim 1, wherein the amount of silicone rubber added is in a range of 5 to 30 parts per 100 parts of said vinylidene fluoride-based fluororubber.
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) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |