Patent ID: 7322506
Filing Date: 2008-01-29
Classification: B25C

Abstract:
1. A tool comprising: a motor assembly with a flywheel that is driven by an electric motor; a driver that is selectively engage-able with an edge of the flywheel to transmit energy therebetween to cause the driver to translate along a driver axis; and wherein the electric motor is selected such that a function relating a ratio of energy loss of the motor to a time to attain a predetermined angular speed is substantially minimized; wherein the motor assembly includes a roller that is movable between an unactuated position and an actuated position, wherein positioning of the roller in the actuated position drives the driver into the edge of the flywheel; wherein the roller is mounted on an activation arm assembly that includes a first arm, a second arm and a third arm, the first arm being pivotally coupled to a structure to which the motor is mounted, the second arm being pivotally coupled to the first arm, the third arm being pivotally coupled to the second arm.