Patent · US Expired

Drilling apparatus and method for introducing a drilling element into the soil

US7264066B2 · kind B2 · utility

1Cited by

4References

16Claims

0Family size

Assignee

BAUER Maschinen GmbH · DE

Inventors

Nikolaus Glas · Hilgertshausen, DE
Peter Unglert · Augsburg, DE

Key dates

Filing date	Dec 3, 2004
Grant date	Sep 4, 2007
Priority date	—
Expiry date	Oct 12, 2025

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B3/03
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention relates to a drilling apparatus and a method for introducing a drilling element into the soil comprising a drive, which is supported on a mast for introducing the drilling element, and a collet turning device having a collet which can be turned by means of at least one operating cylinder. In order to improve the torque transmission at least two collet turning devices are provided which can be engaged with the drilling element so as to transmit the torque.

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