Dentistry – Apparatus – Having condition sensor to transmit signal to regulate...
Patent
1996-07-19
1999-11-09
Lewis, Ralph A.
Dentistry
Apparatus
Having condition sensor to transmit signal to regulate...
433131, A61C 106
Patent
active
059802480
ABSTRACT:
A motor controller for a dental handpiece comprising a torque detection means for detecting the load torque applied to a cutting tool, and a control means for stopping a cutting tool drive motor, reducing the rotation speed of the motor or temporarily reversing the motor when the detected load torque has reached a preset reference torque. With this controller, a cutting tool such as a relatively slender file for root canal formation can be prevented from breaking. In addition, the operability of the handpiece can be improved, and operation such as root canal formation can be conducted easily.
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Kusakabe Hiroaki
Matoba Kazunari
Yoshida Masanobu
Kabushiki Kaisha Morita Seisakusho
Lewis Ralph A.
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