Method of forming holes for permanent fasteners
US6772500B2 · kind B2 · utility
1Cited by
108References
32Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 20, 2001 |
| Grant date | Aug 10, 2004 |
| Priority date | — |
| Expiry date | Aug 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49956
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Two piece tack rivets and method of forming holes for permanent fasteners. The tack rivets have a stem with a head on one end and a grooved region adjacent the other end, and a locking collar for fitting over the grooved region of the stem for deforming into the grooved region of the stem on applying a setting force between the locking collar and the stem. Once the rivet is set, the rivet may be later drilled out with a drill larger in diameter than the head of the stem. Various embodiments are disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.