Tip wrench for ultrasonic dental tool
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United States of America Patent
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Oct 20, 2009
Grant Date -
Apr 24, 2008
app pub date -
Jul 26, 2006
filing date -
Jul 26, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A dental instrument comprising a handpiece with a threaded extension and a working tool for attachment to the extension includes a wrench mounted on the distal end of the handpiece for use in attaching the tool to the extension. The wrench comprises a nose piece mounted on the front end of the handpiece, said nose piece rotateable radially about the front end of the handpiece as well as longitudinally slidable forward of the distal end of the handpiece so that an opening in a front end of the nose piece extends over the hub of the tool. Rotating the extended nose piece radially around the front end of the handpiece causes the hub of the tool to rotate, attaching the tool to the threaded extension. The nose piece is then retracted to a storage position during use of the tool.
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