Cribbing
US4565469A · kind A · utility
12Cited by
8References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1984 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Nov 13, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D15/48
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A crib member for forming underground cribbing is provided in the form of a concrete circle containing fibre reenforcing and preferably in the form of a donut shaped member. A plurality of such members is stacked one on top of another to form a cylindrical cribbing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.