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A fastener driving device includes a fastener driver, a magazine for carrying a supply of fasteners to the fastener driver, a spring that moves the fastener driver through a drive stroke, and a motor configured to move the fastener driver through a return stroke. The motor is operable upon completio

A fastener driving device includes a fastener driver, a magazine for carrying a supply of fasteners to the fastener driver, a spring that moves the fastener driver through a drive stroke, and a motor configured to move the fastener driver through a return stroke. The motor is operable upon completion of the drive stroke, to move the fastener driver partially through the return stroke a predetermined amount to partially pre-compress the spring. The motor is further operable to fully compress the spring after receiving a signal for the drive stroke.

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1. 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 a

1. 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; anda 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; anda 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. 2. A fastener driving device according to claim 1, wherein the anvil member comprises a plurality of cam surfaces located between the projections, and wherein each breaking pad includes a first surface configured to engage one of the cam surfaces when the motor is providing energy to the energy storage source, and a second surface that is angled with respect to the first surface, the second surface configured to engage a second cam surface when the motor is not providing energy to the energy storage source, wherein when the second surface of the breaking pad engages the cam surface, the breaking pad causes the anvil to be locked relative to the inner surface of the housing. 3. 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; anda 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;a rotatably mounted threaded shaft;a carrier connected to the fastener driver and configured to engage a part of the energy storage source; anda coupler mechanism configured to engage the threaded shaft and the carrier to allow transfer of the energy from the motor to the energy storage source, the coupler mechanism being operable to releasably couple the carrier to the threaded shaft to lift the carrier along the threaded shaft during a return stroke and to release the carrier to initiate the drive stroke. 4. A fastener driving device according to claim 3, wherein the coupler mechanism comprises a fixed nut and a free nut, the fixed nut being threadingly engaged with the threaded shaft and the free nut being rotatable relative to the fixed nut and being configured to be coupled to the carrier, the free nut and the fixed nut having ratcheting features constructed and arranged to lock the free nut to the fixed nut to couple the threaded shaft to the carrier during the return stroke. 5. A fastener driving device according to claim 4, wherein the ratcheting features are one directional to allow the fixed nut to spin with the threaded shaft when the threaded shaft is rotated in a direction that is opposite a direction of rotation during the return stroke. 6. A fastener driving device comprising: a fastener driver;a magazine for carrying a supply of fasteners to the fastener driver;an energy storage source configured to store potential energy that moves the fastener driver through a drive stroke; anda reversible motor configured to rotate a shaft in a first direction to move the fastener driver through a return stroke, the motor operable upon completion of the drive stroke, to move the fastener driver partially through the return stroke a predetermined amount to partially pre-energize the energy storage source, the motor further operable to fully energize the energy storage source after receiving a signal for the drive stroke, the motor further configured to rotate the shaft in a second direction opposite the first direction to de-energize the energy storage source;a nose assembly carried by a housing, the nose assembly having a fastener drive track;the magazine constructed and arranged to feed successively leading fasteners from the supply of fasteners contained therein into the drive track;the fastener driver configured to enter the drive track during the drive stroke and drive a leading fastener into a workpiece;a contact trip constructed and arranged to be moved from a normally biased inoperative position into an operative position when the contact trip is pressed against the workpiece; anda fastener lockout operatively coupled to the contact trip, the fastener lockout being constructed and arranged to extend into the drive track in a path of the fastener driver to prevent the leading fastener from being driven by the fastener driver when the contact trip is in the inoperative position. 7. A fastener driving device according to claim 6, wherein the fastener lockout comprises a lever having a first extremity and a second extremity opposite the first extremity, the first extremity being operatively coupled to the contact trip, wherein the lever is movable from a first position in which the second extremity of the lever is positioned in a recess formed in the drive track and is in contact with a head of the leading fastener, and a second position in which the second extremity of the lever is positioned out of the drive track and is not in contact with the head of the leading fastener. 8. A fastener driving device according to claim 7, wherein the lever is constructed and arranged to pivot in and out of the drive track. 9. A fastener driving device according to claim 7, wherein the first extremity of the lever is rotatably mounted to a segment of the contact trip. 10. A fastener driving device according to claim 7, wherein the fastener lockout further comprises a resilient member configured to apply a force on the lever to bias the second extremity of the lever towards a guiding member configured to guide the leading fastener in the drive track. 11. A fastener driving device comprising: a frame;a fastener driver movably mounted within the frame and constructed and arranged 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;a drive train operatively connected to the motor and to the energy storage source, the drive train being 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; anda recoil suppression device constructed and arranged to suppress an amount of recoil when the fastener driver drives the fastener into the workpiece, the recoil suppression device comprising a counter mass configured to be displaceable in a direction opposite a direction the fastener driver travels during the drive stroke, wherein the counter mass includes the drive train. 12. A fastener driving device according to claim 11, wherein an output shaft of the motor and the drive train are oriented substantially parallel to the fastener driver. 13. A fastener driving device according to claim 12, wherein the counter mass includes the motor. 14. A fastener driving device according to claim 11, further comprising a cap coupled to the frame, wherein the counter mass is mounted within the cap. 15. A fastener driving device according to claim 14, further comprising a coupling spring configured to couple the cap to the frame and prevent substantial movement between the cap and the frame.