Patent ID: 8167182

Claim:
An electric driving machine, comprising: a housing having a fastener driving section at one end; a magazine being disposed in association with the fastener driving section of the housing, the magazine holding a plurality of fasteners in an aligned manner and sequentially supplying the fasteners to the fastener driving section; a flywheel capable of accumulating rotational kinetic energy; a motor for rotating the flywheel; actuator feeding means for converting a rotational drive force of the flywheel into a rectilinear drive force and transmitting the rectilinear drive force to a driver blade which drives the fastener supplied to the driving section; a power transmission section transmitting the rotational drive force of the flywheel to the actuator feeding means or interrupts transmission of the rotational drive force; engagement/disengagement means for controlling the power transmission section to an engaged state or a disengaged state; control means for controlling the motor and the engagement/disengagement means in response to operation of a push lever switch and operation of a trigger switch; a battery pack provided as a source for supplying electric power to the control means, the motor, and the engagement/disengagement means; a remaining fastener sensor which detects the amount of aligned fasteners remaining and held in the magazine and which generates a remaining signal when the amount of remaining fasteners has become equal to or less than a predetermined level; a remaining fastener detection circuit which outputs a control signal for use in controlling the control means in accordance with an input of the remaining signal generated by the remaining fastener sensor; and a delay circuit which delays the remaining signal generated by the remaining fastener sensor by a predetermined time and which inputs the delayed remaining signal to the remaining fastener detection circuit, wherein the remaining signal generated by the remaining fastener sensor is not input to the remaining fastener detection circuit by means of the delay circuit during a period in which the driver blade is driving a fastener.