Method of preventing twisted-off bolt head while tightening a bolt
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United States of America Patent
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Jan 28, 1992
Grant Date -
N/A
app pub date -
Apr 28, 1988
filing date -
Apr 28, 1988
priority date (Note) -
Expired
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Abstract
To prevent the head of small sized bolts from being twisted off by a rotary electrically powered impact tool, a structure is provided between the outlet drive of the impact tool and the head of the bolt to minimize the torque transmitted between the impact tool and the bolt head.
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