Drilling head for a percussive displacement ground drilling device and use of a drilling head for a percussive displacement ground drilling device
AssigneeTRACTO-TECHNIK GmbH & Co. KG
InventorFranz-Josef PÜTTMANN
Life of this patent
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Abstract
A drilling head for a percussive displacement ground drilling device with a first drilling head section and a second drilling head section, the first drilling head section having discharge ducts, and the second drilling head section having a cross section that increases in the longitudinal direction, wherein the second drilling head section includes a plurality of step-shaped areas.
Claims11
Drilling head (1) for a percussive displacement ground drilling device with a first and a second drilling head section (4, 5), the first drilling head section (4) having discharge ducts (6) and the second drilling head section (5) having a cross section that increases in the longitudinal direction, characterized in that the second drilling head section (5) has several step-shaped areas (7, 8).
Use of a drilling head (1) for a percussive displacement ground drilling device with a first and a second drilling head section (4, 5), a drilling head section with discharge ducts (6) being used as the first drilling head section (4), which destroys obstacles, and a drilling head section with a cross section that increases in the longitudinal direction (L) being used as the second drilling head section (5), wherein several stepped-shaped areas (7, 8) are used for the second drilling head section (5), which can be used for rotating and/or screwing of debris of the obstacles in to the sidewall of the borehole.
Dependencies are inferred from the claim text.