Infrared sensor for arc welding
US4484059A · kind A · utility
95Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 1982 |
| Grant date | Nov 20, 1984 |
| Priority date | — |
| Expiry date | Apr 26, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0956
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An infrared detector is provided with spectral filtering means for direct observation of the arc region during electric arc welding operations. The filter permits direct observation of the weld pool by suppressing almost all of the infrared radiation produced by the arc itself. Were this not the case, the electrical signal output from the infrared detector is totally obscured by the intense infrared radiation from the arc and would thus not permit sufficiently high resolution infrared measurements to be made on the weld pool and the work piece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.