Rock drill

US6868924B2 · kind B2 · utility

Assignee

• Hawera Probst GmbH · DE

Inventors

• August Haussmann · Ravensburg, DE
• Gerhard Schwarz · Altentreptow, DE

Key dates

• Filing date: Mar 22, 2001
• Grant date: Mar 22, 2005
• Expiry date: Apr 15, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T408/909
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A rock drill including a helical shank and a drill head. The drill head has an end face pointing in a feed direction and at least one roof-shaped carbide cutting element on the end face of the rock drill. The carbide cutting element extends transversely across the drill head and has cutting edges. The end face of the carbide cutting element has an additional chip space at least in front of the carbide cutting element and includes an encircling step to create the additional chip space in the feed direction.