ENDODONTIC HANDPIECE WITH ROTATIONAL AND VERTICAL MOTION
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United States of America Patent
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Sep 30, 2015
filing date -
Sep 30, 2014
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Abstract
An endodontic handpiece including a handpiece body defining a neck portion extending to a head portion which defines a chamber with an opening therefrom. A chalk is positioned in the chamber and includes a cylindrical body having a longitudinal axis, a retainer for holding an endodontic tool co-axially with the cylindrical body, and a pin receiving bore defined in the cylindrical body transverse to the longitudinal axis. A shaft is rotatably supported within the neck portion and having a pin extending from an end thereof and received in the pin receiving bore of the chalk. The pin is offset from a central axis of the shaft such that rotation of the shaft causes the chalk to move downwardly, rotate in a clockwise direction, move upwardly and rotate in a counter-clockwise direction over each 360° rotation of the shaft.
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