Spin-welded electrical ground and spin welding methods
US9601837B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2014 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Dec 8, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01R2201/26
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A friction-welded ground assembly that includes an alloy substrate with a clearance hole; an aluminum alloy weld nut having a bolt bore and an outer wall; and a grounding bolt. The bore is located substantially within the clearance hole and a portion of the outer wall is joined to the substrate at a friction-welded attachment. Further, the bolt is threaded within the bore. In addition, a method for making a ground includes the steps: rotating an aluminum alloy weld nut having an outer wall at a predetermined speed; lowering the outer wall of the rotating nut into contact with an aluminum alloy substrate to generate a frictional force for a friction time; arresting the rotation of the nut; and applying an axial forging force to the outer wall and the substrate for a forging time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.