Swage type fastener with low swage load
US6325582A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jul 6, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B19/05
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A two piece fastener system for including a pin member and a collar having an optimized strength with the materials of the pin member and collar having a predetermined shear strength ratio; the collar has a preselected excess volume to provide a desired `overpacking` condition and is of a size whereby after swage it will define a minimum wall thickness; the collar has an outer surface with a contour which in combination with a preselected excess volume results in a reduction in load required to swage the collar and with a pull type fastener providing a breakneck groove of reduced strength whereby severance of the pintail will occur at a reduced load resulting in a reduction in shock or ghost load applied to workpieces including those of a plastic or composite material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.