Tubular piling apparatus and method
US6675919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 8, 2001 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Nov 8, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B7/20
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tubular piling apparatus and method for penetrating the soil comprises, in a preferred embodiment, elements such as a drive shoe and/or other earth displacing structures which may be, in one presently preferred embodiment, of larger outer diameter than the surface conductor pipe. In a preferred embodiment, the invention includes a collar mountable to the pilings having an earth displacing structure formed thereon. In another aspect, a drive shoe, being of a larger size than the conductor pipe and connected to the bottom section of the conductor pipe is provided with an exterior band mounted on the outer diameter of the drive shoe. The exterior band may be located proximate the lower end of the drive shoe. The drive shoe may include teeth formed such that causes compression of earthen formation away from the inner surface of the drive shoe. The drive shoe may also have an inner band, conical surfaces, or other earth displacing structure mounted on the inner surface to further compress the soil away from the interior surface of the drive shoe and/or plurality of piling sections.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.