Apparatus and method for building support piers from one or more successive lifts
US7901159B2 · kind B2 · utility
6Cited by
38References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 2007 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | May 11, 2027 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D5/46
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An apparatus and method for forming a support pier having a single or multiple compacted aggregate lifts in a soil matrix, wherein the apparatus includes a vertical, hollow tube with a bulbous leading end or head element that is forced into the soil matrix. The hollow tube includes a mechanism for releasing aggregate from the lower head element of the tube as the tube is lifted incrementally. The same hollow tube is then utilized to compact the released aggregate. The process may be repeated to form a series of compacted lifts comprising a pier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.