US Patent 9872440 Handheld power tool

A power hand tool comprises a trigger (23), a motor (22), a blade (25) driven by the motor (22), and electronic circuit (10) for controlling the angular position or the speed of the motor (22) on the basis of the instantaneous position of the trigger (23). The electronic circuit (10) is arranged to detect a predefined movement sequence of the trigger (23) and to execute a function in response to the detection of such a sequence.