Patent ID: 8631986
Filing Date: 2014-01-21
Classification: B25C

Abstract:
1. A fastening tool comprising: a housing including a nose portion; a drive assembly supported by the housing and configured to drive a fastener from the fastening tool; a work contact element extending from the nose portion of the housing that is moveable between an extended position and a depressed position; a trigger moveable between a release position and a fire position; an electric power source; an electronic control unit electrically connected to the drive assembly and configured to selectively deliver electric power to the drive assembly when the electronic control unit is receiving electric power from the electric power source and to deprive the drive assembly of electric power when the electronic control unit is not receiving electric power from the electric power source; a circuit that electrically connects the electric power source to the electronic control unit; a single electric switch electrically connected to the circuit that is movable between an open position and a closed position; wherein, when the electric switch is in the open position, the circuit is opened and power is not provided to the electronic control unit from the electric power source, and when the electric switch is in the closed position, the circuit is closed and power is provided to the electronic control unit from the electric power source; an inner trigger assembly that moves the electric switch from the open position to the closed position in response to the trigger being moved from the release position to the fire position while the work contact element is in the depressed position wherein the drive assembly includes a solenoid, a flywheel, and an electric motor configured to rotate the flywheel, the flywheel configured to move between a first flywheel position and a second flywheel position, and the solenoid configured to move the flywheel between the first flywheel position and the second flywheel position; and wherein the electronic control unit is electrically connected to the electric motor and the solenoid and configured to selectively deliver power to the electric motor and the solenoid while receiving electric power from the electric power source and to deprive the electric motor and solenoid of electric power when the electronic control unit is not receiving electric power from the electric power source.