Apparatus and method for making cylindrical columns
US6485234B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2000 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Dec 12, 2020 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE02D5/46
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A tool for use with a rotatable drill shaft and a source of pressurized fluidized solidifying agent. The tool member has upper and lower extremities. A coupler is coupled to the upper extremity of the tool member and is adapted to be secured to the drill shaft. A plurality of radially extending arms are secured to the tool member intermediate the upper and lower extremities of the tool member. A plurality of forwardly and downwardly extending teeth are secured to each of the radially extending arms and are spaced apart longitudinally of the arms. A plurality of nozzles are carried by the tool member and are spaced circumferentially of the tool member and are coupled to the source of pressurized fluidized solidifying agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.