Grinding apparatus
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United States of America Patent
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Apr 3, 2007
Grant Date -
Jan 22, 2004
app pub date -
Jul 10, 2001
filing date -
Jul 10, 2000
priority date (Note) -
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Abstract
A grinding apparatus for grinding the hard metal inserts or working tips of drill bits (percussive or rotary), tunnel boring machine cutters (TMB) and raised bore machine cutters (RBM), said grinding apparatus having means for holding one or more bits to be ground and a grinding machine carried by an arm or lever system that permits movement of the grinding machine relative to the longitudinal axis of the button of the bit to be ground wherein means are provided to assist with aligning the grinding machine with the longitudinal axis of the button to be ground.
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