Method for manufacturing an expansion anchor by reducing the diameter of a sleeve blank, and expansion anchor
US11028867B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 21, 2017 |
| Grant date | Jun 8, 2021 |
| Priority date | — |
| Expiry date | Apr 12, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB21D53/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A method for manufacturing an expansion anchor is provided, in which a bolt is provided, which includes an expansion body for expanding an expansion sleeve surrounding the bolt, an annular sleeve blank having an opening is provided, the bolt is introduced into the opening of the annular sleeve blank, and the annular sleeve blank is reduced in diameter while the bolt is located in the opening of the annular sleeve blank. The invention also relates to expansion anchors, which may be obtained with the aid of the method according to the invention, in particular bolt-type anchors having closed annular expansion sleeves and, in particular, anchors having expansion sleeves with protruding noses, which are each situated on a closing fold of the expansion sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.