Fastener for attachment by friction stir processing
US7695227B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2006 |
| Grant date | Apr 13, 2010 |
| Priority date | — |
| Expiry date | Jun 23, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B37/061
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastener is provided for attachment to a workpiece by a friction stir process. The fastener includes a base having an underside adapted to seat upon the workpiece and a fastener portion attached to the top side of the base. An anchor portion projects from the underside of the base and is adapted to be rotated and advanced at high speed and inserted into the workpiece by friction stirring of the workpiece. The anchor portion is embedded in the workpiece upon cooling of the workpiece. The anchor portion has an indent in the surface thereof enabling the softened stirred material to flow into the indent and thereby mechanically capture the anchor portion within the solidified workpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.