Patent ID: 8505798

Claim:
A fastener driving device comprising: a fastener driver configured to drive a fastener into a workpiece during a drive stroke; an energy storage source configured to store potential energy and to release the potential energy to the fastener driver to initiate the drive stroke; a motor constructed and arranged to provide energy to the energy storage source; and a drive train operatively connected to the motor and to the energy storage source, the drive train comprising a clutch configured to transfer the energy from the motor to the energy storage source, and to restrain the potential energy stored in the energy storage source when the motor is in an off condition, wherein the clutch comprises a housing having an inner surface; a drive planet carrier rotationally coupled to the motor and positioned within the inner surface of the housing, the drive planet carrier having a plurality of drive members; an anvil rotatably coupled with the drive planet carrier and positioned within the inner surface of the housing, the anvil having a plurality of projections extending in a radial direction relative to a central axis of rotation; and a plurality of elongated breaking pads rotatably movable between a first orientation and a second orientation, each breaking pad being supported by the drive planet carrier and disposed between one of the projections of the anvil and one of the drive members of the drive planet carrier, the breaking pads being constructed and arranged to allow rotational movement of the anvil when the motor is providing energy to the energy storage source and the breaking pads are in the first orientation, and to substantially prevent rotation of the anvil when the motor is not providing energy to the energy storage source when the breaking pads are in the second orientation, wherein the second orientation is tilted relative to the first orientation.