Weld backup mechanism for internal pipe welding apparatus
US4556162A · kind A · utility
11Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1984 |
| Grant date | Dec 3, 1985 |
| Priority date | — |
| Expiry date | Apr 17, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/035
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A weld backup mechanism includes an arcuate backup ring segment spring mounted to a support plate for rotational displacement. A plurality of such mechanisms are fixed to clamping members of an internal line-up clamp for radial expansion and retraction therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.