Patent ID: 9469023
Filing Date: 2016-10-18
CPC Classification: B23B,B25B,B25F,F16H,H02P

Claim Text:
1. A power tool comprising: a continuously variable transmission configured to change a velocity of a rotational output from a drive motor and to output the rotational output to a spindle to which a tip end tool is mounted; a condition detection device configured to detect a condition of the power tool; and an operation control device configured to (i) exhibit a plurality of control patterns with respect to RPM of the drive motor and a transmission gear ratio of the continuously variable transmission, (ii) determine a target RPM of the spindle based on the condition of the power tool detected by the condition detection device, (iii) select one control pattern out of the plurality of control patterns, and (iv) control the RPM of the drive motor and the transmission gear ratio of the continuously variable transmission based on the target RPM and the selected control pattern.