Anchors for fixing to dense concrete, masonry and the like
US4973210A · kind A · utility
13Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 11, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Aug 11, 2009 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16B39/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A non-expandible anchor for use in tensile zones of strong material having a compressive strength of at least 20 N/mm.sup.2 includes a cutting portion having a deep, coarse, raised, external helix formed with a cutting edge and having interruptions along the helix which act as chip breakers and permit removal of debris during insertion in a pre-prepared bore drilled in the strong material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.