Method and apparatus for welding a metal fastener to a metal member
US6624379B1 · kind B1 · utility
14Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2002 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Apr 15, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K11/3081
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for projection welding a metal fastener (e.g., a nut) to a metal member (e.g., a sheet) is disclosed. The apparatus includes a first electrical contact and a locator assembly having a second electrical contact. For welding the fastener to the member, the locator assembly aligns through-holes of the fastener and sheet and a current is passed through protrusions of the fastener. In turn, the protrusions are softened to bond with the member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.