US4518445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for making electrical cables
Assignee: Alcatel Lucent NV
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Filing: 1984-03-05
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Granted: 1985-05-21
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Expires: 2004-03-05
Abstract
Abstract This invention relates to continuous manufacturing of insulated wire and conductor, and in particular to heating cables having "cold ends". A process is described by which predetermined lengths of resistance conductor (4) and of cold end conductor (9) are continuously and alternatively jointed together. After insulation and provision of additional protective sheats the continuous composite conductor is cut into cold end heating cables. A conductor jointing process is described.
Inventors
- 👤 Jack R. Pedersen
- 👤 Sigmund Ege
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:36
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/40; H05B3/54; H05B3/56; B; B23; B23K; B23K1/00; B23K1/002; Y; Y10; Y10S; Y10S228/00; Y10S228/904; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49117; Y10T29/49194
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
64 words
A method for manufacturing a continuous conductor from conductor sections comprising the steps of: placing a jointing composition into a sleeve; positioning conductor sections to be joined in the sleeve in end-to-end relationship such that their adjacent ends border the jointing composition; heating the sleeve to a temperature at which the jointing composition becomes flowable and fuses the adjacent ends; and removing the sleeve.
Claim 2
Independent Claim
64 words
A method for manufacturing a continuous conductor from conductor sections comprising the steps of: placing a jointing composition into a sleeve; positioning conductor sections to be joined in the sleeve in end-to-end relationship such that their adjacent ends border the jointing composition; heating the sleeve to a temperature at which the jointing composition becomes flowable and fuses the adjacent ends; and removing the sleeve.
Claim 3
Dependent Claim
18 words
The method as claimed in claim 1 wherein the placing and heating steps constitute a silver soldering process.
Claim 4
Dependent Claim
16 words
The method as claimed in claim 1 wherein the sleeve is of a substantially shape-retaining material.
Claim 5
Dependent Claim
12 words
The method as claimed in claim 3 wherein the material is carbon.
Claim 6
Dependent Claim
17 words
The method as claimed in claim 1 wherein the heating step includes a high frequency heating process.
Claim 7
Dependent Claim
31 words
The method as claimed in claim 1 further comprising, after the heating step, applying a current to the conductor in order to provide resistance heating to the ends to be joined.
Claim 8
Dependent Claim
37 words
The method as claimed in claim 6 further comprising, before the heating step, pretensioning the ends in the sleeve towards each other in order that they may be brought into contact when the jointing composition becomes flowable.
Claim 9
Dependent Claim
37 words
The method as claimed in claim 1 further comprising, before the heating step, pretensioning the ends in the sleeve towards each other in order that they may be brought into contact when the joining composition becomes flowable.
Claim 10
Dependent Claim
22 words
The method as claimed in claim 1 further comprising, prior to said placing step, plating the sleeve with an electrically conductive material.
Claim 11
Dependent Claim
13 words
The method as claimed in claim 8 wherein the conductive material is copper.
Claim 12
Dependent Claim
20 words
The method as claimed in claim 8 further comprising, after said pretensioning step, positioning a retaining member around the sleeve.
Claim 13
Dependent Claim
17 words
The method as claimed in claim 11 further comprising, after said positioning step, heating the retaining member.
Claim 14
Dependent Claim
39 words
The method as claimed in claim 8 further comprising, prior to said plating step, dimensioning the sleeve such that one end thereof has a larger diameter than the other end in other to facilitate placement of the jointing composition.
Claim 15
Dependent Claim
35 words
The method as claimed in claim 8 wherein, after movement of the ends adjacent each other in the sleeve, reducing the amount of heat in at least one of said heating and current applying steps.
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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |