An inline ratcheting mechanism for motorized hand tools that includes a drive body, a ratchet shaft, ratchet pawls, a reversing collar, and a reversing switch adapted to cause the reversing collar to engage or disengage the ratchet pawls with ratchet teeth of the ratchet shaft.

A tool having a housing assembly, a driver assembly coupled to housing assembly and adapted to drive a work piece. The driver assembly includes a head portion indexably and releasably coupled to a base portion. The head portion can be one of a number of interchangeable head portions. One of the head portion and the base portion includes tabs extending outwardly in a radial direction. The other of the head portion and the base portion includes corresponding grooves adapted to respectively receive the tabs to indexably couple the head portion to the base portion.

Cordless ratchet wrench is designed with the various upgrades in its design from the previously available cordless ratchet wrench. The ratchet actuator, which was a motor, the direction for the rotation of the output shaft was easily adjusted. A battery was used in the new design to provide the power for the rotation of the shaft for tightening and losing purpose. The push-button was used to trigger the rotation of the shaft for the tightening or the losing purpose. The pneumatic air ratchet wrench is the second model and it is also used as the latest electric wrench for the tightening and the losing purpose. The air motor is used in the design instead of the regular electric motor to make a pneumatic air ratchet wrench. The structure of the pneumatic air ratchet wrench is easily handleable at different locations.

A ratcheting tool may include a motor coupled to an output drive mechanism by a clutch assembly. A torque selector may be rotatably coupled to a housing of the tool, to provide for selection of a maximum output torque. The clutch assembly may selectively disengage the motor and the output drive mechanism, or slip, in response to detection of an output torque level, or resistance torque, that is greater than or equal to the selected maximum output torque level.

The invention provides, in another aspect, an impact tool comprising a housing, a motor having an output shaft defining a first axis, a drive shaft rotatably supported by the housing about a second axis oriented substantially normal to the first axis, a gear coupled for co-rotation with the drive shaft, an impact mechanism coupled between the motor and the drive shaft and operable to impart a striking rotational force to the drive shaft, the impact mechanism including, an anvil rotatably supported by the housing and coupled to the drive shaft, the anvil including a pinion engaged with the drive shaft gear, a hammer coupled to the motor to receive torque from the motor and impart the striking rotational force to the anvil, and a spring washer exerting a preload force on the pinion to maintain the pinion meshed with the drive shaft gear.

A tool with two sequential gear trains and gear carrier assemblies adapted to be recessed into internal gears. The internal gear assembly also prevents rotation of the internal gear assembly relative to a housing of the tool. For example, the internal gear assembly can include a first gear train and second gear train sequentially coupled to the first gear train, wherein a first ring gear and first planet gears of the first gear train are substantially similar to a second ring gear and second planet gears of the second gear train.

The invention relates to a power tool with an electrically controlled commutating assembly comprising: an electrically controlled commutating assembly and a control unit; the electrically controlled commutating assembly has an electromagnetic unit; the electromagnetic unit is capable of performing a change in displacement due to electromagnetic action; the control unit has a control member, the control member is capable of changing a working direction of a power tool, and displacement of the electromagnetic unit is capable of actuating the control member of the control unit to make the power tool switch the working direction.

A power ratchet tool capable of accessing narrow and elongated spaces includes a handle, a head, and a mounting cover. The handle has a transmission device having an idler and an eccentric spindle. The idler has a toothed portion. The eccentric spindle has a gear portion and an abutting portion. The gear portion engages with the toothed portion. The head is mounted to the handle and has a length being between 3 inches and 28 inches, an extended housing and a bushing. The extended housing is mounted to the handle and has a receiving groove. The receiving groove is recessed in the extended housing. The bushing is received in the receiving groove. The handle and the head are mounted together by the mounting cover. The abutting portion of the eccentric spindle abuts against the bushing, such that the bushing sleeves the eccentric spindle.

An electric ratchet wrench includes a body receiving a driving device for driving a fastener. A first transmission device is connected to the driving device. A second transmission device is connected to a power device. A clutch device is mounted between the first and second transmission devices and is normally in a coupling state for driving the fastener. When the clutch device switches to the disengagement state due to a resistance larger than a torque outputted by the power device, the body can be manually driven to overcome the resistance, forcibly driving the fastener through the large-resistance position. The clutch device returns to the coupling state after the fastener passes the large-resistance position.

A power wrench includes an output spindle and a socket member. The output spindle has an axial through hole that extends through the output spindle and that open at two axially opposite ends of the output spindle. The socket member is connected to one of the axially opposite ends and has a first socket hole aligned with the axial through hole and configured to engage a nut or the like. The axial through hole is configured to permit passage of a bolt when the nut is tightened by the socket member.