Rotary tool
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United States of America Patent
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Aug 3, 2010
Grant Date -
Apr 2, 2009
app pub date -
Sep 9, 2008
filing date -
Sep 28, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
For accurate holding, easy attachment and detachment, and sufficient rotation force, a rotary tool has a holding and transmitting part 1 to hold a hexagonal column of a rotated body and give rotation force, comprising a recessed part 2, which has an inner face having an approximately regular triangle cross sectional shape, run-off parts 2a at corners of the triangle shape, and a uniform shape in depth direction, and plate springs 3, which are fixed at a bottom of the recessed part 2 and have pawl parts 3a at tips thereof positioned at the opening side of the recessed part 2, and the pawl parts 3a can be moved into the run-off parts 2a while contacting to three side faces of the hexagonal column H and generate spring force, when the hexagonal column H is inserted into the recessed part 2.
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