Cutting tools for drilling concrete, aggregate, masonry or the like materials
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United States of America Patent
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-
Feb 12, 2002
Issued Date -
N/A
app pub date -
Nov 30, 2000
filing date -
Dec 12, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A cutting tool (200, 202) has a longitudinally extending shaft portion (208) with a chucking part (204) and a cutting head (206). A cutting edge (220) is formed on the cutting head (206). The cutting edge (220) includes at least one cutting portion. A rake surface (224) is formed adjacent to at least one of the cutting portions (220) with the rake face being at a rake angle in the range from about -10.degree. to about 10.degree.. A clearance face (226) is formed adjacent to the at least one cutting portion opposite the rake face (224). The clearance face (226) is at a clearance angle in the range from about 10.degree. to about 50.degree.. An edge radius between the rake face and the clearance face is at a radius of from about 0.0003 to about 0.0040 inch.
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