Patent ID: 8464921

Claim:
A fastener driving tool comprising: a motor; a magazine that supplies fasteners to a nose; a plunger, arranged between an upper dead point and a lower dead point so as to be capable of moving up and down, having a blade for driving the fasteners supplied to the nose; a drive spring that urges the plunger downwards, and that is capable of being compressed upwards; a spring compression drive unit that moves the plunger in a direction of compression of the drive spring based on drive power of the motor; a first operation switch that detects a first user operation; a second operation switch that detects a second user operation; an operation detection switch that detects operation of the spring compression drive unit; a first switching element and a second switching element individually controlled to go on or off, electrically connected in series, and making supply of electrical power to the motor possible when both the first switching element and the second switching element are on; a first controller including an AND logic circuit and a delay circuit to turn on the first switching element when both the first and second operation switches are turned on and to turn off the first switching element when a predetermined time period has lapsed after one of the first and second operation switches was turned off; and a second controller that turns on the second switching element when both the first and second operation switches are turned on and that turns off the second switching element when the operation detection switch generates a detection signal.