Rotatable cutting tool with head portion having elongated projections
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United States of America Patent
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Oct 4, 2016
Grant Date -
Oct 6, 2011
app pub date -
Apr 6, 2010
filing date -
Apr 6, 2010
priority date (Note) -
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Abstract
A rotatable cutting tool for use in impinging earth strata wherein the rotatable cutting tool comprises a cutting tool body and a hard tip affixed to the cutting tool body. The cutting tool body includes an axial forward end for receiving the hard tip and an axial rearward end, a head portion axially rearward of the axial forward end, a collar portion axially rearward of the head portion, and a shank portion axially rearward of the collar portion and axially forward of the axial rearward end. The head portion includes a plurality of elongated projections extending radially thereabout, each of the elongated projections including a first tapered side and a second tapered side. The first tapered side of each of the elongated projections adjoins the second tapered side of an adjacent elongated projection at a surface of the head portion.
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