Coolant supply device and electric drill unit provided with coolant supply device
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United States of America Patent
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Oct 4, 2016
Grant Date -
Jun 5, 2014
app pub date -
May 21, 2012
filing date -
May 30, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
A coolant supply device attached to an electric drilling tool is configured to supply a coolant to a drilling portion at a distal end of a drill. The coolant supply device includes: a first flange member and a second flange member provided axially on a rotating shaft, the rotating shaft sharing a same axis with the drill, the first flange member being positioned at the drill side, the second flange member being positioned such that the second flange member is more distant from the drill than the first flange member; space formed between the flange members, into which a coolant is injected; a coolant supply passage formed between the first flange member and the drill and guiding the coolant in the space to the drill; and a coolant push-out mechanism configured to push the coolant out of the space toward the coolant supply passage.
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