Flexible extendable backing shield for welding reactive metals
US4866236A · kind A · utility
11Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/325
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A flexible extendable backing shield for use with the welding of reactive metals such as titanium. The backing shield provides a means for selectively distributing the inert gas along the length of the shield and then diffusing the inert gas to the root side of the weld to prevent oxidation and embrittlement of the weld root. The backing shield is of modular configuration so that a plurality of the devices can be readily connected together to shield a variety of complex shapes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.