Internal mandrel used in an operation of butt joining two lengths of tubing by welding
US4493966A · kind A · utility
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2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | May 11, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K37/0531
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An internal mandrel (22) cooperating in the operation of joining two successive lengths of tubing by welding, and it is characterized in that this mandrel comprises zones (25, 26, 27) separated longitudinally and serving respectively for matching, welding, and welding checking, and means of displacement of the mandrel (22) by a step, enabling the latter to present the said zones in succession in front of one and the same working station.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.