A rotary hammer includes a housing, a first motor supported by the housing and defining a first motor axis, a second motor supported by the housing and defining a second motor axis that is coaxial with the first motor axis, and a spindle coupled to the first motor for receiving torque from the first motor, causing the spindle to rotate. The rotary hammer further includes a reciprocation mechanism operable to create a variable pressure air spring within the spindle. The reciprocation mechanism includes a piston configured to reciprocate within the spindle in response to receiving torque from the second motor, a striker that is selectively reciprocable within the spindle in response to reciprocation of the piston, and an anvil that is impacted by the striker when the striker reciprocates towards the tool bit. The anvil imparts axial impacts to the tool bit.

A prior art powered wrist pin knocker is improved with a new plunger that prevents wobbling. The new plunger responds to a return vacuum pressure. The improved plunger is symmetrical along a longitudinal axis. New embodiments include a new side mount valve head to reduce length, a remote air controller and a variable length cylinder for the cannon. The new valve head is a simplified valve head assembly that adapts to an end of the cannon mount or a side mount or a remote mount. Another embodiment provides a stand for a surface mount application. This embodiment can have an extended piston for loosening tail bearings down a long channel. A manual return embodiment can use a rod to manually return the plunger to the proximal end for another firing cycle.

A method for sensing at least one characteristic value of at least one tool, in particular a hand-held power tool, includes detachably connecting the tool to at least one additional module and detecting with the additional module at least one characteristic value of the tool. The method further includes carrying out at least one training operation. The training operation includes deriving at least one reference value from the at least one characteristic value via the additional module and storing the reference value.

A hammer includes a handle, a head assembly affixed to the handle, and a claw assembly slidably disposed on the handle. The handle includes apertures interspaced linearly along the length of the handle. The head assembly includes a throat and a striking face. The claw assembly includes a claw, an annular sleeve slidably disposed around the handle for enabling linear adjustment of the claw assembly along the length of the handle, and a ratcheting lever coupled to the sleeve for adjusting the position of the claw relative to the head assembly during operation. The ratcheting lever includes a spring-biased locking pin for removably engaging any one of the apertures to selectively secure the claw assembly to the handle in a desired position and a depressible release arm for releasing the spring-biased locking pin from the apertures to enable the claw assembly to slide along the length of the handle.

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.

In one example, a system includes a hammer extender having a head formed from an upper layer, a lower layer and a side layer. The hammer extender includes an elongated body portion having a solid core elongated portion and a hollow core elongated portion. One end of the solid core elongated portion is connected to the head, and the other end is connected to the hollow core elongated portion. The hollow core elongated portion can receive and guide a nail during impact. The system may include a hammer having a hammer handle with a hollow interior to store the hammer extender.

A hammer includes a handle, a head assembly affixed to the handle, and a claw assembly slidably disposed on the handle. The handle includes apertures interspaced linearly along the length of the handle. The head assembly includes a throat and a striking face. The claw assembly includes a claw, an annular sleeve slidably disposed around the handle for enabling linear adjustment of the claw assembly along the length of the handle, and a ratcheting lever coupled to the sleeve for adjusting the position of the claw relative to the head assembly during operation. The ratcheting lever includes a spring-biased locking pin for removably engaging any one of the apertures to selectively secure the claw assembly to the handle in a desired position and a depressible release arm for releasing the spring-biased locking pin from the apertures to enable the claw assembly to slide along the length of the handle.

The present disclosure generally relates to quick change attachments for a pneumatic percussive tool. The attachments convert a pneumatic percussive tool, such as an air impact tool with proximal attachment, which has a “pushing” force, into a pneumatic percussive tool having a “pulling” force. Once attached to the pneumatic percussive tool, the attachments also provide a quick change feature for allowing “pulling” tools to be simply and easily removed and replaced.

A rotary power tool comprises a drive mechanism including an electric motor and a transmission, a housing enclosing at least a portion of the drive mechanism, a spindle rotatable in response to receiving torque from the drive mechanism, a first ratchet coupled for co-rotation with the spindle, a second ratchet rotationally fixed to the housing, a sleeve bushing on an interior of the housing, and a bearing arranged between the spindle and the sleeve bushing and rotatably supporting the spindle. The bearing has an outer race. The spindle is movable relative to the housing in response to contact with a workpiece, causing the first and second ratchets to engage and the spindle to reciprocate while rotating. The outer race of the bearing moves along the sleeve bushing during reciprocation of the spindle when the first ratchet and second ratchet are engaged.

An adjustable leverage arm hammer apparatus for creating mechanical advantage for the claw when removing nails includes a handle. A handle top side has a post aperture extending towards a handle bottom side and a handle left side has an adjustment channel extending through to the post aperture. The handle top side is coupled within a handle aperture of a hammer head. A leverage arm is slidably coupled within the post aperture to move between a retracted position flush with a head top side of the hammer head and an extended position protruding above the head top side. A leveler has an adjustment track coupled within the adjustment channel and a slider coupled to the leverage arm and extending through the adjustment channel. The slider is in operational communication with the adjustment track to secure the leverage arm in position.