A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.

A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.

A powered fastener driver includes a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece, a drive unit for providing torque to move the driver blade toward the top-dead-center position, and a rotary lifter engageable with the driver blade. The rotary lifter having a body and a drive pin coupled to the body. A roller is rotatably coupled to the drive pin and includes a non-cylindrical outer peripheral surface defining a plurality of engagement sections. A tooth of the driver blade is configured to engage one of the engagement sections when moving the driver blade from the bottom-dead-center position toward the top-dead-center position.

A powered fastener driver includes a driver blade movable from a top-dead-center position to a bottom-dead-center position for driving a fastener into a workpiece, a drive unit for providing torque to move the driver blade toward the top-dead-center position, and a rotary lifter engageable with the driver blade. The rotary lifter having a body and a drive pin coupled to the body. A roller is rotatably coupled to the drive pin and includes a non-cylindrical outer peripheral surface defining a plurality of engagement sections. A tooth of the driver blade is configured to engage one of the engagement sections when moving the driver blade from the bottom-dead-center position toward the top-dead-center position.

A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the drive comprising a piston coil arranged on the working piston and a first stator coil arranged on the stator, the piston coil having a piston coil axis, which is oriented transversely, to the working axis.

A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the drive comprising a piston coil arranged on the working piston and a first stator coil arranged on the stator, the piston coil having a piston coil axis, which is oriented transversely, to the working axis.

A tool for working a substrate has a stator and a working piston, which is intended to move relative to the stator along a working axis and toward the substrate or to hit a fastening element, in order to drive the fastening element into the substrate, also having a drive, which is intended to drive the working piston along the working axis onto the substrate, the drive having a piston coil capacitor and a piston coil arranged on the working piston, the piston coil being electrically connectable to the piston coil capacitor in order during rapid discharge of the piston coil capacitor to have a current flowing through it and to generate a magnetic field which accelerates the working piston relative to the stator.

A tool for working a substrate has a stator and a working piston, which is intended to move relative to the stator along a working axis and toward the substrate or to hit a fastening element, in order to drive the fastening element into the substrate, also having a drive, which is intended to drive the working piston along the working axis onto the substrate, the drive having a piston coil capacitor and a piston coil arranged on the working piston, the piston coil being electrically connectable to the piston coil capacitor in order during rapid discharge of the piston coil capacitor to have a current flowing through it and to generate a magnetic field which accelerates the working piston relative to the stator.

A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the stator having a first electrical stator contact and the working piston having a first electrical piston contact, which slides on the first electrical stator contact and is arranged on a radially outer circumference of the working piston with respect to the working axis.

A tool for working a substrate, the tool having a stator and a working piston, which is intended to move relative to the stator along a working axis, also having a drive, which is intended to drive the working piston from a starting position along the working axis to the substrate, the stator having a first electrical stator contact and the working piston having a first electrical piston contact, which slides on the first electrical stator contact and is arranged on a radially outer circumference of the working piston with respect to the working axis.