Rock drill
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 22, 2005
Grant Date -
Jul 24, 2003
app pub date -
Nov 6, 2002
filing date -
May 19, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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