Patent · US Expired

Method for steering a ground-drilling machine

US6012536A · kind A · utility

32Cited by

10References

29Claims

0Family size

Assignee

Tracto-Technik Schmidt Spezialmaschinen · DE

Inventors

Franz-Josef Puttmann · Lennestadt, DE
Alfons Hesse · Lennestadt, DE

Key dates

Filing date	Feb 12, 1997
Grant date	Jan 11, 2000
Priority date	—
Expiry date	Feb 12, 2017

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B7/068
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

The invention pertains to a method for steering a ground drilling machine, in particular, a pipe string assembly with a drilling head which is driven in the ground in rotative, propulsive and, if so desired, percussive fashion, in which at least one deflection pulse is exerted upon the rotating drilling head or the pulses acting upon the drilling head are interrupted when the angular position of the drilling head relative its axis corresponds to the position in which the deflection should take place.

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