US3705257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric cable and method of making
Assignee: ANACONDA ACQUISITION Co
•
Filing: 1972-03-06
•
Granted: 1972-12-05
•
Expires: 1992-03-06
Abstract
Abstract In an electric cable having a semiconducting jacket applied directly over a wall of polymeric insulation, excessive bonding of the jacket to the insulation is prevented by applying the curing agent for the jacket only to its outer surface after extrusion, and then effecting a vulcanization such that the inner jacket surface remains thermoplastic.
Inventors
- 👤 Robert M Wade
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:04
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B13/00; H01B13/22; H01B9/00; H01B9/02; H01B9/028
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
22 words
a vulcanized outer surface, said jacket being homogeneous save for a decreasing degree of vulcanization from said outer toward said inner surface.
Claim 2
Dependent Claim
10 words
The cable of claim 1 wherein said wall comprises polyethylene.
Claim 3
Dependent Claim
11 words
The cable of claim 1 wherein said wall comprises vulcanized polyethylene.
Claim 4
Dependent Claim
10 words
The cable of claim 1 wherein said jacket is semiconducting.
Claim 5
Dependent Claim
11 words
The cable of claim 1 wherein said jacket comprises chlorinated polyethylene.
Claim 6
Dependent Claim
11 words
The cable of claim 3 wherein said jacket comprises chlorinated polyethylene.
Claim 7
Dependent Claim
12 words
The cable of claim 4 comprising drain wires embedded within said jacket.
Claim 8
Independent Claim
68 words
The method of making a jacketed cable comprising the steps of: A. extruding a polymeric jacket free from vulcanizing agent around an insulated cable core, B. applying a vulcanizing agent to the surface of said jacket, said agent being sufficient to vulcanize said surface but insufficient to vulcanize the entirety of said jacket, C. heating said cable thereby vulcanizing said surface and diffusing said agent into said jAcket.
Claim 9
Dependent Claim
16 words
The method of claim 8 wherein said vulcanizing agent is applied to said jacket in solution.
Claim 10
Dependent Claim
17 words
The method of claim 8 wherein said jacket comprises chlorinated polyethylene blended with ethylene ethyl acrylate copolymer.
Claim 11
Dependent Claim
12 words
The method of claim 8 wherein said agent comprises an organic peroxide.
Claim 12
Dependent Claim
13 words
The method of claim 8 wherein said agent comprises di- Alpha -cumyl peroxide.
Claim 13
Dependent Claim
13 words
The method of claim 9 wherein said agent comprises di- Alpha -cumyl peroxide.
Claim 14
Dependent Claim
18 words
The method of claim 9 wherein said solution comprises acetone and said agent comprises di- Alpha -cumyl peroxide.
Claim 15
Dependent Claim
12 words
The method of claim 8 wherein said heating is effected under pressure.
Claim 16
Dependent Claim
13 words
The method of claim 15 wherein said heating is effected by pressurized steam.
Claim 17
Dependent Claim
15 words
The method of claim 15 wherein said agent is applied to said jacket in solution.
Claim 18
Dependent Claim
17 words
The method of claim 15 wherein said jacket comprises chlorinated polyethylene blended with ethylene ethyl acrylate copolymer.
Claim 19
Dependent Claim
12 words
The method of claim 15 wherein said agent comprises in organic peroxide.
Claim 20
Dependent Claim
12 words
The method of claim 15 wherein said agent comprises di-Alpha -cumyl peroxide.
Claim 21
Dependent Claim
12 words
The method of claim 17 wherein said agent comprises di-Alpha -cumyl peroxide.
Claim 22
Dependent Claim
17 words
The method of claim 17 wherein said agent comprises di-Alpha -cumyl peroxide and said solution comprises acetone.
Claim 23
Dependent Claim
16 words
The method of claim 15 wherein said agent is applied within a chamber containing said pressure.
Claim 24
Dependent Claim
16 words
The method of claim 16 wherein said agent is applied within a chamber for said steam.
References Cited (Backward Citations)
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US3474189A
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US3479446A
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US3571613A
Cited
US3614300A
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US3646248A
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US3666877A
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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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |