Temperature compensated wire-conducting tube and method of manufacture
US5122209A · kind A · utility
17Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Mar 5, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B13/2633
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for manufacturing a continuous metal tube having a plurality of electrical conductors disposed therein, by using a spring member to depress the electrical conductors while a flat metal strip is formed into a tubular member and welded to enclose the electrical conductors. The spring member functions to protect the electrical conductors from heat damage. The welding occurs completely downstream of the spring member in order to avoid excessive heat buildup in the spring member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.