Stick arc welder with low voltage start
US7820943B2 · kind B2 · utility
5Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 2005 |
| Grant date | Oct 26, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2028 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0953
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A system and method for forming an arc between an electrode and a workpiece is disclosed. The present invention includes a method of initiating an arc that includes comparing voltage across output terminals of a stick welder to a voltage threshold, and if the voltage across the output terminals is less than the voltage threshold, increasing the voltage across the output terminals to an arc formation OCV. The output voltage of the stick welder will be driven to a lower OCV if an arc is not formed between an electrode and a workpiece within a given period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.