Patent · US Active

Drilling rig and drilling method

US8322458B2 · kind B2 · utility

5Cited by

6References

17Claims

0Family size

Assignee

BAUER Maschinen GmbH · DE

Inventors

Erwin Stoetzer · Aichach, DE
Werner Harthauser · Wertingen, DE

Key dates

Filing date	Jun 8, 2009
Grant date	Dec 4, 2012
Priority date	—
Expiry date	Sep 15, 2029

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B7/005
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A drilling rig and a drilling method, in which the drilling element is caused to rotate and is displaced along a mast by means of a drilling drive, which drilling element has a continuous screw auger disposed below the drilling drive, and an extension, which is connected to the continuous screw auger and extends upwardly through the drilling drive. A displacement head is disposed between the continuous screw auger and the extension and is adapted to force earth material into the wall of a bore hole.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.