Patent · US Expired

Drilling machine

US4732226A · kind A · utility

18Cited by

4References

22Claims

0Family size

Assignee

Turmag Turbo-Maschinen AG and Gesellschaft Fuer Strahlen- und Umweltforschung Muenchen MBH · DE

Inventors

Wolfgang Ebeling · Hannover, DE
Helmut Kolditz · Wolfenbüttel, DE

Key dates

Filing date	Mar 16, 1987
Grant date	Mar 22, 1988
Priority date	—
Expiry date	Mar 16, 2007

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D1/06
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

A shaft drilling machine comprises a drill head carrying drill tools thereon, a device for guiding the drill head in a shaft, a device for advancing the drill head in the shaft, and drive aggregates which are lowered into the shaft together with the drill head and driving the latter. A sluice for providing a rinsing fluid is arranged in a pilot drill. A rinsing conduit and an ascending conduit for extracting from the shaft a drilled material-rinsing fluid mixture generated during the drilling operation are connected to the sluice which is formed as a bucket wheel.

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