Rock drill bit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 9, 1991
Grant Date -
N/A
app pub date -
Nov 14, 1989
filing date -
Nov 14, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rock drill bit for continuous drilling through overburden and rock has a body with end and side surfaces. The drill bit is constructed for rotation in a predetermined direction. The body defines a conduit for compressed air which terminates at a port in the side surface of the body. The port is disposed to open in a direction facing generally away from the predetermined direction of rotation of the drill bit.
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