External apparatus for butt welding two pipes
US4638984A · kind A · utility
17Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1985 |
| Grant date | Jan 27, 1987 |
| Priority date | — |
| Expiry date | Oct 9, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K37/0533
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An external apparatus for butting two tubular elements 1, 2 to be welded together comprises two frames 8, 9 provided with means for the external gripping of the elements and which are connected by jacks 10, 11 for bringing the elements together and by a plurality of connecting and aligning means 14-19 each comprising a pair of members 20, 21 engageable one in the other with the interposition of an elastic means 22. The gripping means comprise a plurality of radial jaws 55-64 for gripping the tubular elements and carried by support rings each comprising three jaw holders 23-25 each in the form of a segment of a circle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.