US4062998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat-resistant, resin coated electric wire characterized by three resin coatings, the outer of which is less highly cross-linked than the coating next adjacent thereto
Assignee: Kishimoto Sangyo Co Ltd
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Filing: 1976-04-09
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Granted: 1977-12-13
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Expires: 1996-04-09
Abstract
Abstract Electric wire coated by a non-flammable resin, characterized in that the resin is composed of two layers, the degrees of crosslinking of which are different from each other, and the gel percent of the outer portion of the resin is lower than that of the inner portion of the resin is disclosed.
Inventors
- 👤 Miyuki Hagiwara
- 👤 Masayoshi Sohara
- 👤 Kunio Araki
- 👤 Tsutomu Kagiya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:27
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
Electric wire coated by a combustible, insulating resin and a self-extinguishing resin, the outer layer being the self-extinguishing resin, characterized in that the self-extinguishing resin is composed of two layers, the degree of crosslinking of which are different from each other, and gel percent of outer portion of the self-extinguishing resin is lower than that of inner portion of the self-extinguishing resin.
Claim 2
Dependent Claim
62 words
Electric wire coated by a combustible, insulating resin and a self-extinguishing resin, the outer layer being the self-extinguishing resin, characterized in that the self-extinguishing resin is composed of two layers, the degree of crosslinking of which are different from each other, and gel percent of outer portion of the self-extinguishing resin is lower than that of inner portion of the self-extinguishing resin.
Claim 3
Dependent Claim
70 words
The electric wire defined in claim 1 wherein the self-extinguishing resin is selected from the group consisting of copolymer of vinyl chloride and a monomer selected from the group consisting of vinyl acetate, ethylene, propylene or an acrylic monomer; vinyl chloride-grafted ethylene-vinyl acetate copolymer; vinyl chloride-grafted ethylene-acrylic acid copolymer; vinyl chloride-grafted ethylene-propylene copolymer; polyvinyl containing a plasticizer; chlorinated polyethylene; polyethylene-vinyl acetate copolymer containing an organic self-extinguishing agent; or mixtures thereof.
Claim 4
Dependent Claim
36 words
The electric wire defined in claim 1 wherein the ratio of the thickness of the inner portion of the self-extinguishing resin to that of the outer portion thereof is in the range of 0.1 - 5.
Claim 5
Dependent Claim
53 words
Electric wire coated by a self-extinguishing resin having insulating property, characterized in that the self-extinguishing resin is composed of two layers, the degrees of crosslinking of which are different from each other, and gel percent of the outer portion of the resin is lower than that of the inner portion of the resin.
Claim 6
Dependent Claim
53 words
Electric wire coated by a self-extinguishing resin having insulating property, characterized in that the self-extinguishing resin is composed of two layers, the degrees of crosslinking of which are different from each other, and gel percent of the outer portion of the resin is lower than that of the inner portion of the resin.
Claim 7
Dependent Claim
44 words
The electric wire defined in claim 4 wherein the self-extinguishing resin having insulating property is selected from the group consisting of a chlorinated polyethylene, ethylene-vinyl chloride copolymer, polyethylene having an organic self-extinguishing agent, polyethylenevinyl acetate copolymer having an organic self-extinguishing agent, or mixtures thereof.
Claim 8
Dependent Claim
35 words
The electric wire defined in claim 4 wherein the ratio of the thickness of the inner portion of the resin to that of the outer portion thereof is in the range of 0.1 - 5.
Claim 9
Dependent Claim
38 words
Electric wire defined in claim 1 wherein the gel percent of the outer portion of the self-extinguishing resin is from 20 to 65 percent, and the gel percent of the inner portion thereof is more than 65 percent.
Claim 10
Dependent Claim
37 words
Electric wire defined in claim 1 wherein the gel percent of the outer portion of the self-extinguishing resin is from 40 to 60 percent, and the gel percent of the inner portion thereof is more than 70%.
Claim 11
Dependent Claim
38 words
Electric wire defined in claim 4 wherein the gel percent of the outer portion of the self-extinguishing resin is from 20 to 85 percent, and the gel percent of the inner portion thereof is more than 85 percent.
Claim 12
Dependent Claim
38 words
Electric wire defined in claim 4 wherein the gel percent of the outer portion of the self-extinguishing resin is from 50 to 80 percent, and the gel percent of the inner portion thereof is more than 90 percent.
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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) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |