Metal fastening element
US6676346B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2002 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Apr 29, 2022 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B13/065
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention relates to a fastening element made from metal, having an expansion sleeve (2) and an expansion member (3), which expansion member (3) is axially displaceable on the shank of a threaded bolt (8), the threaded bolt (8) having on its forward end an end-stop in the form of an expander (9). On the threaded bolt (8), between the expander (9) and the expansion member (3), there is arranged a spacing element (10). In the event of a tensile load, the expander (9) enters the spacing element (10) and forms a deformation zone that corresponds to the length of the spacing element (10). As a result of the friction and deformation occurring in the deformation zone, overloads are absorbed and, consequently, the fastening element is prevented from coming out or the threaded bolt from breaking off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.