Removably fixing a dental instrument with a retractable catch relative to a drive shaft axis
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United States of America Patent
Stats
-
Dec 13, 2011
Grant Date -
Jul 31, 2008
app pub date -
Feb 24, 2006
filing date -
Jun 3, 2005
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A head assembly for attaching to a dental instrument has a body, a rotary shaft with a pinion thereon, at least one retractable catch latching lever and a retractable catch. The rotary shaft has a central bore suitable for receiving a shank of the dental instrument therein. The latching lever has a peg engageable with an annular latching groove of the shank of the dental instrument. The catch has a positioning plane coinciding with the drive flat of the instrument. The body has a circular opening closed off by a push button cooperative with the rotary shaft so as to release the shank of the dental instrument.
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