The present invention relates generally to the field of accessories for use with impact drivers that are useful for removing a valve seat from a fitting. The device has a first end, a second end and a central body portion. The first end has a shaft that allows the device to be attached to the chuck of an impact driver or drill. The second end has a head that can be placed within a valve seat. Once inserted into the valve seat, the impact driver or drill can be used to spin the device to remove the valve seat from the surrounding fixture.

An impact power tool includes a motor, a controller, and an impact mechanism configured to rotationally drive an output spindle. The controller is configured to control power delivered to the motor, during a third phase of operation after a second phase of operation and starting upon expiration of a predetermined time period. The third phase has one or more of a third non-zero target rotational speed, a third duty cycle setting, a third conduction band setting, or a third advance angle setting. The controller is configured to control power delivered to the motor, during a fourth phase of operation after the third phase upon detection of a reduction in load on the output spindle or cessation of impacting. The fourth phase has one or more of a fourth non-zero target rotational speed, a fourth duty cycle setting, a fourth conduction band setting, or a fourth advance angle setting.

An impact tool is provided which includes a drive source configured to rotate an output drive. A hammer is movable in a first direction to apply a rotational impact force on an anvil which rotates the output drive. A first hammer angle sensor set to a first signal channel and located proximate to a surface of the hammer. A plurality of regularly spaced targets are located on the surface of the hammer. Each of the plurality of regularly spaced targets are detectable by the first hammer sensor. And detection of one or more of the plurality of regularly spaced targets by the first hammer sensor indicates movement of the hammer.

A torque transmission mechanism includes a magnet coupling including a driving magnet member coupled to a driving shaft side and a driven magnet member coupled to an output shaft side. One of the driving magnet member or the driven magnet member rotatably supports the other of the driving magnet member or the driven magnet member.

A rotary impact tool in one aspect of the present disclosure includes a motor, an impact mechanism, an impact detector, and a controller. The controller executes constant duty ratio control from when the motor is started until an impact is detected by the impact detector. The controller executes constant rotation speed control in response to detection of an impact by the impact detector.

Surgical impact driver adaptors may be connected between a powered surgical instrument and a driven surgical device when performing surgical procedures, such as those involving the implantation of a surgical implant into bone, for example. During surgical procedures, the surgical impact driver adaptors may limit a transfer of a rotational force from the powered surgical instrument to the surgical device until a sufficient axial force is applied to the impact driver adaptor from the powered surgical instrument.

An impact power tool includes a front housing connected to a rear housing. A motor is disposed at least partially in the rear housing. An impulse case is disposed at least partially in the front housing. The impulse case is operably coupled to the motor to receive torque therefrom and be rotated thereby. A first protrusion is provided on an interior surface of the impulse case. A first blade is provided inside the impulse unit and is configured to be impacted by the first protrusion. An output shaft is partially disposed within the impulse unit and partially projects out of the impulse unit. The output shaft is configured to be rotated in response to the first protrusion impacting the first blade.

A power tool includes a housing, a motor positioned within the housing, and an impulse assembly coupled to the motor to receive torque therefrom. The impulse assembly including a cylinder at least partially forming a chamber containing a hydraulic fluid, an anvil positioned at least partially within the chamber, and a hammer positioned at least partially within the chamber and engageable with the anvil for transferring rotational impacts to the anvil. The hammer includes a surface facing the anvil, a first through hole formed in the surface and a second through hole formed in the surface. The impulse assembly further includes a biasing member biasing the hammer towards the anvil. The flow of the hydraulic fluid through the first through hole varies as the hammer translates away from the anvil.

An impact tool includes a housing, an electric motor supported in the housing, and a drive assembly for converting a continuous torque input from the motor to consecutive rotational impacts upon a workpiece capable of developing at least 1,700 ft-lbs of fastening torque. The drive assembly includes an anvil rotatable about an axis and having a head adjacent a distal end of the anvil. The head has a minimum cross-sectional width of at least 1 inch in a plane oriented transverse to the axis. The drive assembly also includes a hammer that is both rotationally and axially movable relative to the anvil for imparting the consecutive rotational impacts upon the anvil, and a spring for biasing the hammer in an axial direction toward the anvil.

An electric motor includes a rotor assembly and a stator assembly. The stator assembly includes a plurality of teeth, a plurality of coils supported about the plurality of teeth, and a conductive terminal electrically connected to at least one coil of the plurality of coils. The conductive terminal includes a lead portion. The electric motor also includes a printed circuit board coupled to the stator assembly and electrically connected to the lead portion. The electric motor further includes a solder cup supported on the lead portion between the printed circuit board and the stator assembly. The solder cup includes a wide end facing toward the printed circuit board, and a narrow end opposite the wide end.