Patent · US Active

Modular rotary drill head

US7770668B2 · kind B2 · utility

4Cited by

25References

26Claims

0Family size

Assignee

Longyear TM, Inc. · US

Inventors

Christof Kruse · Wenden, DE
Stefan Wrede · Kirchhundem, DE
Hans-Juergen Wahl · Trochtelfingen, DE

Key dates

Filing date	Sep 26, 2008
Grant date	Aug 10, 2010
Priority date	—
Expiry date	Sep 26, 2028

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B19/084
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A modular base assembly for a rotary drill head includes a drive flange assembly having a tubular drive shaft configured to engage at least a lower drive interface. The modular base assembly also includes a gear housing supporting the drive flange assembly. Furthermore, the modular base assembly can also include a plurality of interchangeable gear pinions selectively coupled to the drive flange assembly.

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