Self-locking fastener, fastener system, and process
US4260005A · kind A · utility
66Cited by
11References
34Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1977 |
| Grant date | Apr 7, 1981 |
| Priority date | — |
| Expiry date | Nov 9, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49929
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A collar threads onto a shear pin. When the collar engages a surface of a workpiece, resistance to further threading increases. When sufficient resistance to threading occurs, a setting driver upsets lobes of the collar and forces these lobes radially inward toward the axis of the collar. Material of the collar inside the lobes responds to deformation of the lobes and flows radially inward against the shear pin to lock the collar, shear pin and workpiece together. The driver then rotates freely and a joint has been made with a predetermined clamp-up load and its component parts locked together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.