Projection welding of flanged weld nut
US6765171B1 · kind B1 · utility
5Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2003 |
| Grant date | Jul 20, 2004 |
| Priority date | — |
| Expiry date | Feb 28, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/14
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
This invention provides a method of welding a flange nut to a workpiece surface using an improved design of a welding electrode. The electrode comprises a parts-receiving recess adapted to receive a stem portion of the nut, while maintaining a clearance between the recess and the stem. This clearance allows electrical current to be directed toward the flange portion of the nut. As a result, electrical contact between the workpiece and projections underlying the flange is greatly improved, thereby produce higher quality spot welds and increasing the life of the electrode tip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.