US3840694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cable with stripable insulation
Assignee: Union Carbide Canada Ltd
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Filing: 1973-06-26
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Granted: 1974-10-08
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Expires: 1993-06-26
Abstract
Abstract Electrical conductors having vulcanized ethylene polymer insulation are described wherein new and improved release agents are coated on the conductor to assist in the removal of the insulation. The release agents are certain polymers of ethylene oxide such as polyethylene oxide and copolymers of ethylene oxide and propylene oxide.
Inventors
- 👤 J Luczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:20
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/308; H01B7/00; H01B7/02; H01B7/0275; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
39 words
AN ELECTRICALLY INSULATED CONDUCTOR COMPRISING: A. AN ELECTRICAL CONDUCTOR HAVING A RELEASE AGENT COATED THEREON, SAID RELEASE AGENT BEING A POLYMER OF ETHYLENE B. CROSS-LINKED ETHYLENE POLYMER INSULATION WHEREIN THE ETHYLENE POLYMER WAS CROSS-LINKED ON THE SAID COATED CONDUCTOR.
Claim 2
Dependent Claim
39 words
AN ELECTRICALLY INSULATED CONDUCTOR COMPRISING: A. AN ELECTRICAL CONDUCTOR HAVING A RELEASE AGENT COATED THEREON, SAID RELEASE AGENT BEING A POLYMER OF ETHYLENE B. CROSS-LINKED ETHYLENE POLYMER INSULATION WHEREIN THE ETHYLENE POLYMER WAS CROSS-LINKED ON THE SAID COATED CONDUCTOR.
Claim 3
Dependent Claim
33 words
An electrically insulated conductor as claimed in claim 1 wherein said release agent is one selected from the group consisting of a polyethylene oxide and a copolymer of ethylene oxide and propylene oxide.
Claim 4
Dependent Claim
78 words
An electrically insulated wire comprising: a. an electrically conductive wire having a release agent coated thereon, said release agent being one selected from the group consisting of polyethylene oxide having a molecular weight of from 570 to 630 and a copolymer of ethylene oxide and propylene oxide, with the weight ratio of ethylene oxide to propylene oxide being from 1/1 to 3/1 and b. cross-linked ethylene polymer insulation wherein the ethylene polymer was cross-linked on said coated wire.
Claim 5
Dependent Claim
78 words
An electrically insulated wire comprising: a. an electrically conductive wire having a release agent coated thereon, said release agent being one selected from the group consisting of polyethylene oxide having a molecular weight of from 570 to 630 and a copolymer of ethylene oxide and propylene oxide, with the weight ratio of ethylene oxide to propylene oxide being from 1/1 to 3/1 and b. cross-linked ethylene polymer insulation wherein the ethylene polymer was cross-linked on said coated wire.
Claim 6
Dependent Claim
24 words
An electrically insulated wire as claimed in claim 3 wherein said ethylene polymer is polyethylene having a density of from 0.915 to 0.945 grams/cc.
Claim 7
Dependent Claim
24 words
An electrically insulated wire as claimed in claim 4 wherein said ethylene polymer is polyethylene having a density of from 0.930 to 0.935 grams/cc.
Claim 8
Dependent Claim
22 words
An electrically insulated wire as claimed in claim 3 wherein said ethylene polymer is an interpolymer of ethylene and a vinyl monomer.
Claim 9
Dependent Claim
47 words
An electrically insulated wire as claimed in claim 6 wherein said ethylene polymer is an interpolymer containing from 80 to 95 weight percent of ethylene and from 5 to 20 weight percent of a vinyl monomer selected from the group consisting of vinyl acetate and ethyl acrylate.
Claim 10
Dependent Claim
31 words
An electrically insulated wire as claimed in claim 7 wherein said ethylene polymer is a copolymer of ethylene-vinyl acetate containing from 10 percent to 12 percent by weight of vinyl acetate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |