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 torque transfer assembly for an impact bit holder may include a jacket operably coupled to a driven body having a driven end configured to interface with a bit, and a multi-start thread assembly operably coupling the jacket to a drive body having a drive end configured to interface with a powered driver. The torque transfer assembly may be disposed between the drive body and driven body and may be configured to transfer torque between the drive body and the driven body.

A torque transfer assembly for an impact bit holder may include a jacket operably coupled to a driven body having a driven end configured to interface with a bit, and a multi-start thread assembly operably coupling the jacket to a drive body having a drive end configured to interface with a powered driver. The torque transfer assembly may be disposed between the drive body and driven body and may be configured to transfer torque between the drive body and the driven body.

A slide and pull hammer device includes three major components, namely, a guide sleeve, a drive bar and an impact head. The drive bar is inserted within the guide sleeve. The impact head is secured within the distal end of the guide sleeve, and has a portion which protrudes beyond the guide sleeve distal end. The drive bar is operable to impact both a distal end and a proximal end of the guide sleeve to apply force to objects in at least two opposite force directions. One force applied by the device includes a hammering or compression force, and another force applied by the device includes a tension or withdrawing force.

A slide and pull hammer device includes three major components, namely, a guide sleeve, a drive bar and an impact head. The drive bar is inserted within the guide sleeve. The impact head is secured within the distal end of the guide sleeve, and has a portion which protrudes beyond the guide sleeve distal end. The drive bar is operable to impact both a distal end and a proximal end of the guide sleeve to apply force to objects in at least two opposite force directions. One force applied by the device includes a hammering or compression force, and another force applied by the device includes a tension or withdrawing force.

A power tool has a functional component, a motor, a power supply module, a controller and a drive circuit including a first drive terminal and a second drive terminal respectively electrically connected to a first power terminal and a second power terminal of the power supply module, multiple high-side switches wherein high-side terminals of the high-side switches are respectively electrically connected to the first drive terminal, and multiple low-side switches wherein low-side terminals of the low-side switches are respectively electrically connected to the second drive terminal. The controller is configured to output a first control signal to one high-side switch to place it in an on or off state and output a second control signal to one low-side switch to place it in the other state. The low-side terminal of one high-side switch is connected to the high-side terminal of one low-side switch.

A power tool has a functional component, a motor, a power supply module, a controller and a drive circuit including a first drive terminal and a second drive terminal respectively electrically connected to a first power terminal and a second power terminal of the power supply module, multiple high-side switches wherein high-side terminals of the high-side switches are respectively electrically connected to the first drive terminal, and multiple low-side switches wherein low-side terminals of the low-side switches are respectively electrically connected to the second drive terminal. The controller is configured to output a first control signal to one high-side switch to place it in an on or off state and output a second control signal to one low-side switch to place it in the other state. The low-side terminal of one high-side switch is connected to the high-side terminal of one low-side switch.

The present disclosure provides an impact wrench for detaching bolts or nuts together with socket. The impact wrench includes a pole, a driving member, an elastic member, and a connecting portion. The driving member is slidably and rotatably disposed to one end of the pole. The other end of the pole has a sleeving portion which may be a rectangular hole. The elastic member presses against the driving member and the pole to make the driving member continuously moving away from the sleeving portion. The connecting portion is configured on the pole or on the driving member. The connecting portion is adapted for a handle to be assembled thereon. Therefore, power tool may be attached to the sleeving portion to provide rotational impulse to detach bolts or nuts. User may hole the impact wrench by a handle which is assembled on the connecting portion, achieving convenience and safety operation condition.

The present disclosure provides an impact wrench for detaching bolts or nuts together with socket. The impact wrench includes a pole, a driving member, an elastic member, and a connecting portion. The driving member is slidably and rotatably disposed to one end of the pole. The other end of the pole has a sleeving portion which may be a rectangular hole. The elastic member presses against the driving member and the pole to make the driving member continuously moving away from the sleeving portion. The connecting portion is configured on the pole or on the driving member. The connecting portion is adapted for a handle to be assembled thereon. Therefore, power tool may be attached to the sleeving portion to provide rotational impulse to detach bolts or nuts. User may hole the impact wrench by a handle which is assembled on the connecting portion, achieving convenience and safety operation condition.

A wrench includes a head having a first end and a second end and a handle extending from the head. The head defines and at least partially surrounds an opening. The head further defines at least one recess continuous with the opening. A distance between the first end and the second end of the head is greater than a cross-sectional diameter of a pipe flange of a hammer union.