Device for forming expanded hole section
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United States of America Patent
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Dec 26, 2017
Issued Date -
N/A
app pub date -
Mar 4, 2014
filing date -
Mar 4, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A hole expansion device includes a cutting portion main, body formed to have a diameter for the cutting portion, main body to be housed within a joint hole and including a cutting blade tool movable in a range from a housed position at which a blade is housed within a diameter for the cutting portion main body to an extended position at which the blade projects out of the diameter, an advancing and retracting member that is constructed to move in an axial direction by an external force and rotate about an axis of the advancing and retracting member, and a link mechanism that converts an advancing and retracting movement of the advancing and retracting member into a rotational movement of the cutting blade tool.
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