Fastening element assembly
US4986709A · kind A · utility
12Cited by
12References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1989 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Dec 26, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B13/126
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fastening element assembly for use in a hard receiving material, such as concrete, masonry and the like, includes a sleeve and a fastening element or bolt. The sleeve forms a blind bore in the receiving material. At its leading end, in the insertion direction, the sleeve has a cutting edge. The sleeve is rotated by rotational force transmitted to engagement faces on the sleeve. After the borehole is drilled by the sleeve, the bolt is driven through the sleeve into the receiving material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.