A pneumatic wrench includes a handlebar having a main body, two extension walls defining an engagement notch therebetween, and a first air channel extending inside the main body and the two extension walls, and a tool head having a head portion, a neck portion extending from the head portion into the engagement notch, and a second air channel extending inside the head and neck portions. A pivot shaft is inserted through the handlebar and the tool head such that the tool head is swingable relative to the handlebar. The pivot shaft has a shaft body with a shaft hole, and two first and one second through holes in air communication with the shaft hole. The first air channel is communicated with the second air channel via the first and second through holes and the shaft hole. As such, the pneumatic wrench is angle-adjustable to fulfill user's need.

A pneumatic wrench includes a handlebar having a main body, two extension walls defining an engagement notch therebetween, and a first air channel extending inside the main body and the two extension walls, and a tool head having a head portion, a neck portion extending from the head portion into the engagement notch, and a second air channel extending inside the head and neck portions. A pivot shaft is inserted through the handlebar and the tool head such that the tool head is swingable relative to the handlebar. The pivot shaft has a shaft body with a shaft hole, and two first and one second through holes in air communication with the shaft hole. The first air channel is communicated with the second air channel via the first and second through holes and the shaft hole. As such, the pneumatic wrench is angle-adjustable to fulfill user's need.

A structure for replacing shear wrench head comprises a body having an inner sleeve portion, a ring groove is disposed around the inner sleeve portion and a first assembly portion is disposed on the inner sleeve portion; a chuck unit having a second assembly portion assembled with the first assembly portion; a central sleeve portion having at least one through hole with a locking member provided therein, a stop portion protruding inwardly is provided on the central sleeve portion, when the stop portion wedges with the first and second assembly portions, a position of the through hole approximately overlaps with the ring groove of the inner sleeve portion, so that the locking member can be disposed between the ring groove and the through hole; and an outer sleeve portion slidably disposed on the central sleeve portion, and capable of optionally restricting the locking member from moving outwardly.

A ratchet tool has a handle housing and a ratchet assembly including a pawl and an output shaft. The pawl is moveable between a first position in which the pawl is operatively coupled to drive the output shaft in a first direction and a second position in which the pawl is operatively coupled to drive the output shaft in a second direction opposite the first direction. A switch in the handle housing has an external actuation surface for engagement with an operator's hand. The ratchet tool also has a rotatable gear having at least one tooth, the rotatable gear operatively coupled to the pawl such that rotation of the rotatable gear effectuates movement of the pawl between the first and second positions. A linkage is operatively coupled to the rotatable gear to effectuate rotation of the rotatable gear by actuation of the switch.

A powered ratchet tool includes a housing, an output member having a toothed surface, and a drive mechanism for driving the output member. The drive mechanism includes a yoke in which the output member is arranged. A first pawl is in the yoke and is biased toward the toothed surface of the output member and a second pawl is in the yoke and is biased toward the toothed surface of the output member. A selection ring having a circumferential wall is arranged between the yoke and the toothed surface of the output member. The circumferential wall has a first window and a second window and the selection ring is moveable between a first position and a second position.

A power machine tool (1) of the present disclosure includes a housing (10) and a control board (20), a power device (30), a bearing set (40), a transmission mechanism (50) and a torque axle (60) disposed in the housing (10). The power device (30) is disposed in the housing (10) via the bearing set (40) and transmits a torque via the transmission mechanism (50). The torque axle (60) is connected to a rear side of the power device (30) and rotates with the power device (30). In addition, a torque sensor (2) is arranged on the rear side of the power device (30) to detect the torque of the power machine tool.

A power machine tool (1) of the present disclosure includes a housing (10) and a control board (20), a power device (30), a bearing set (40), a transmission mechanism (50) and a torque axle (60) disposed in the housing (10). The power device (30) is disposed in the housing (10) via the bearing set (40) and transmits a torque via the transmission mechanism (50). The torque axle (60) is connected to a rear side of the power device (30) and rotates with the power device (30). In addition, a torque sensor (2) is arranged on the rear side of the power device (30) to detect the torque of the power machine tool.

A power tool communication system including an external device including a first controller configured to transmit, via wireless communication to a power tool, configuration data including a work light duration parameter value and a work light brightness parameter value. The power tool includes a housing, a brushless direct current (DC) motor, a trigger, a work light, a wireless communication circuit configured to wirelessly communicate with the external device to receive the configuration data, and a second controller configured to control a work light duration of the work light based on the work light duration parameter value, and control a work light brightness of the work light based on the work light brightness parameter value.

A method is for operating a hand-held power tool that includes an electric motor. The method includes determining a signal of an operating parameter of the electric motor; determining an application class at least partly on the basis of the signal of the operating parameter; and providing comparative information at least partly on the basis of the application class including (i) providing at least one model-signal form, and (ii) providing a threshold value for correspondence. The model-signal form can be assigned to an established state in the progress of the work performed by the hand-held power tool. The method further includes comparing the signal of the operating parameter with the model-signal form and determining a correspondence evaluation from the comparison. The correspondence evaluation is at least partly based on the threshold value for correspondence.

A method is for operating a hand-held power tool that includes an electric motor. The method includes determining a signal of an operating parameter of the electric motor; determining an application class at least partly on the basis of the signal of the operating parameter; and providing comparative information at least partly on the basis of the application class including (i) providing at least one model-signal form, and (ii) providing a threshold value for correspondence. The model-signal form can be assigned to an established state in the progress of the work performed by the hand-held power tool. The method further includes comparing the signal of the operating parameter with the model-signal form and determining a correspondence evaluation from the comparison. The correspondence evaluation is at least partly based on the threshold value for correspondence.