Fire extinguishing system for an electric arc welding apparatus
US4634833A · kind A · utility
4Cited by
4References
3Claims
0Family size
Inventor
Key dates
| Filing date | Nov 8, 1985 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Nov 8, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/095
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A fire extingushing system for an electric welding apparatus is disclosed having a source of inert gas which can be activated by switches (27, 28) in a torch (20) which provides a two-step flow of gas through magnetic valves (40, 44). In the preferred embodiment, a low level flow of 3 to 5 liters is provided by activating one of the switches and a fire extinguishing and cleaning flow of 10 to 40 kiloliters is provided by activating the remaining switch. The operator of the system can extinguish a newly started fire and clean the welding tip without need to put the apparatus down and obtain other equipment for these purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.