Abstract: A gas spring-powered fastener driver including a cylinder, a moveable piston positioned within the cylinder, a driver blade attached to the piston and movable therewith between a ready position and a driven position, a lifter operable to move the driver blade from the driven position to the ready position, a transmission for providing torque to the lifter, a first clutch mechanism permitting a transfer of torque to an output shaft of the transmission in a single rotational direction, and a second clutch mechanism limiting an amount of torque transferred to the transmission output shaft and the lifter.

Abstract: A rotary hammer includes a motor, a spindle coupled to the motor for receiving torque from the motor, a piston at least partially received within the spindle for reciprocation therein, a striker received within the spindle for reciprocation in response to reciprocation of the piston, and an anvil received within the spindle and positioned between the striker and a tool bit. The anvil imparts axial impacts to the tool bit in response to reciprocation of the striker. The rotary hammer also includes a synchronizing assembly operable in a first configuration in which the motor is drivably coupled to the piston for reciprocating the piston, and a second configuration in which the piston is decoupled from the motor. The rotary hammer further includes an actuator operable for switching the synchronizing assembly from the second configuration to the first configuration in response to depressing the tool bit against a workpiece.

Abstract: A hand-held knockout driver includes a main housing having a handle portion, a motor positioned within the main housing, a hydraulic assembly driven by the motor and including a reservoir containing hydraulic fluid, a secondary housing coupled to the main housing and defining a bore therein, a working piston moveable within the bore between a rest position and an actuated position, and a work zone defined between the secondary housing and the working piston into which pressurized hydraulic fluid discharged from the hydraulic assembly is received. One unit of fluid is added to the work zone to move the working piston from the rest position to the actuated position. The reservoir has a fill capacity no greater than about 1.5 units of fluid.

Abstract: A battery pack may include a housing; at least one battery cell supported in the housing; a phase change material; and a bladder containing the phase change material, the bladder defining a channel having an opening, the bladder being in a heat transfer relationship with the at least one battery cell. The phase change material in the bladder may also surround a portion of the channel. The phase change material may include a paraffin wax.

Abstract: A hand-held knockout driver for use with a punch and die. The hand-held knockout driver including a housing having a handle portion, a motor positioned within the housing, the motor having a drive shaft defining a first axis, a pump assembly positioned within the housing, the pump assembly having a piston moving along a second axis, a dump valve positioned within the housing, the dump valve defining a third axis, and a working piston moveable with respect to the housing along a fourth axis. Where the second axis, the third axis, and the fourth axis are all not parallel to the first axis.

Abstract: A vibration exposure monitoring system, for use in a power tool, includes a controller operable to log an amount of time that the power tool is in use for different users throughout a duration of a predetermined time period and an indicator for providing a signal to one of the users of the power tool when the amount of time for the one of the users exceeds a predetermined threshold.

Abstract: A rotary power tool includes a housing, a spindle defining a working axis, and a motor supported by the housing. The motor is operable to drive the spindle. The rotary power tool also includes a handle movably coupled to the housing and a vibration isolating assembly disposed between the housing and the handle. The vibration isolating assembly attenuates vibration transmitted from the housing to the handle. A battery pack is removably coupled directly to the handle and configured to provide power to the motor.

Abstract: A hacksaw including a removable blade has a handle including a recess configured to receive the blade and a frame including a first end and a second end. The first end of the frame is coupled to the handle and the second end extends away from the handle. The hacksaw also includes a blade retention mechanism coupled to the second end of the frame for coupling the blade to the second end of the frame. The blade retention mechanism includes an adjustable fastener coupled to the frame and coupling the blade retention mechanism to the frame, a resilient member seated on the fastener, a retaining member seated on the fastener, the retaining member spaced apart from the frame by a gap and the gap having a width, and a lever coupled to the fastener and movable between a first position and a second position.

Abstract: A battery retention system for a power tool having a motor, a drive mechanism coupled to the motor, and an output element coupled to the drive mechanism. The battery retention system includes a battery pack for powering the motor, the battery pack being removably coupled to the power tool. The battery retention mechanism also includes a first mating feature for coupling the battery pack to the power tool and a second mating feature for coupling the battery pack to the power tool independently from the first mating feature. The second mating feature is configured to couple the battery pack to the power tool when the first mating feature is disengaged.

Abstract: An impact device includes a housing, a motor supported by the housing, a stationary shaft, and a rotating transmission member supported on the stationary shaft for rotation. The rotating transmission member includes a hub having a first cam surface. The impact device also includes a rotating impact member carried by the transmission member and rotatable relative to the transmission member. The rotating impact member includes a lug protruding from an outer periphery of the rotating impact member and a second cam surface. The impact device further includes a spherical element engaged with the first and second cam surfaces on the hub of the rotating transmission member and the rotating impact member, respectively, an energy-absorbing member exerting a biasing force against the rotating impact member, and a reciprocating impact member oriented substantially normal to the stationary shaft and impacted by the lug of the rotating impact member.

Abstract: A hand-held knockout driver for use with a punch and die. The hand-held knockout driver including a housing having a handle portion, a motor positioned within the housing, the motor having a drive shaft defining a first axis, a pump assembly positioned within the housing, the pump assembly having a piston moving along a second axis, a dump valve positioned within the housing, the dump valve defining a third axis, and a working piston moveable with respect to the housing along a fourth axis.

Abstract: An impact device includes a housing, a motor supported by the housing, a stationary shaft, and a rotating transmission member supported on the stationary shaft for rotation. The rotating transmission member includes a hub having a first cam surface. The impact device also includes a rotating impact member carried by the transmission member and rotatable relative to the transmission member. The rotating impact member includes a lug protruding from an outer periphery of the rotating impact member and a second cam surface. The impact device further includes a spherical element engaged with the first and second cam surfaces on the hub of the rotating transmission member and the rotating impact member, respectively, an energy-absorbing member exerting a biasing force against the rotating impact member, and a reciprocating impact member oriented substantially normal to the stationary shaft and impacted by the lug of the rotating impact member.

Abstract: A hacksaw including a removable blade has a handle including a recess configured to receive the blade and a frame including a first end and a second end. The first end of the frame is coupled to the handle and the second end extends away from the handle. The hacksaw also includes a blade retention mechanism coupled to the second end of the frame for coupling the blade to the second end of the frame. The blade retention mechanism includes an adjustable fastener coupled to the frame and coupling the blade retention mechanism to the frame, a resilient member seated on the fastener, a retaining member seated on the fastener, the retaining member spaced apart from the frame by a gap and the gap having a width, and a lever coupled to the fastener and movable between a first position and a second position.