Coupler for soil nail and method of emplacing same
US10072389B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2014 |
| Grant date | Sep 11, 2018 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D5/56
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A coupler interconnects adjacent sections of soil nail members to extend a length for a soil nail to be installed. The coupler includes a plurality of projections extending from the exterior surface of the coupler. The projections serve multiple purposes. One purpose is to center the soil nail within a drilled hole. Another purpose is to provide mixing for selected amounts of drilled material to remain within the hole, and/or evacuation of drilled material to be removed from the hole. Another purpose is to create a drilled hole with varying diameters in response to different geological layers encountered during drilling. The coupler with projections therefore serves as a secondary drill bit implement. The size of the projections can be altered to selectively enlarge a desired portion of a drilled hole. The invention further includes a soil nail assembly and a method for installing a soil nail assembly including couplers with projections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.