Chuck
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United States of America Patent
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N/A
Issued Date -
Jul 25, 2013
app pub date -
Jan 19, 2012
filing date -
Jan 19, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Disclosed is a chuck including a body, at least one ball and a helical spring. The body includes an axial space defined therein and at least one radial bore with a small open end near the axial space and a large open end in an external side thereof. The ball includes a first section movably placed in the radial bore, a second section movable into the axial space, and a third section movably placed outside the radial bore. The helical spring is placed around the body and in contact with the third section of the ball for biasing the second section of the ball into a recess defined in a bit inserted in the axial space.
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