Earth drilling device

US9243456B2 · kind B2 · utility

Assignee

• TRACTO-TECHNIK GmbH & Co., KG · DE

Inventors

• Franz-Josef Puttmann · Lennestadt, DE
• Gerhard Völkel
• Peter Grass · Lennestadt, DE
• Meinolf Rameil · Lennestadt, DE

Key dates

• Filing date: Mar 3, 2010
• Grant date: Jan 26, 2016
• Expiry date: Mar 3, 2030

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B7/205
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

The invention relates to an earth drilling device (1) for boring a borehole into the soil and/or for drawing a line (9) into an underground passage, comprising at least one system line (4, 6) extending from the earth drilling device to a start region, wherein the system line is designed in an electrically insulating manner.