Expanding anchoring device
US4899501A · kind A · utility
1Cited by
12References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 11, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | Aug 11, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D5/803
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An expanding anchoring device comprising a shaft, base plate, and two pivotally mounted expansion members for engaging the inner surface of a pre-drilled hole. The expansion members, in two forms of the anchoring device, can penetrate and expand into the sidewall of a pre-drilled hole by cutting a lateral notch in the sidewall. In another form of this expanding anchoring device, the expansion members spring open when they are aligned with a pre-cut lateral notch in the sidewall of a pre-drilled hole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.