Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Makoto Kunisada0
Date of Patent
November 28, 2017
0Patent Application Number
143615830
Date Filed
January 11, 2013
0Patent Citations Received
Patent Primary Examiner
Patent abstract
A dental handpiece control apparatus including: a relay 17 that switches a polarity of a voltage applied to a motor 20, and thereby switches a rotation direction of the motor 20 to forward rotation and backward rotation, the motor 20 being incorporated in the dental handpiece to rotate a cutting tool (a file) mounted to the dental handpiece; and a control section 11 that controls the switching of the voltage polarity by the relay 17 based on a rotation angle θF for forward rotation and a rotation angle θR for backward rotation of the motor 20, the rotation angle θF and the rotation angle θR being associated with state information of the file.
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