Abstract: A hammer for an impact tool includes a main body, a hammer lug including an impact surface configured to engage and apply impacts to a corresponding impact surface on an anvil of the impact tool, and a hardened layer formed on the impact surface, the hardened layer having a higher surface hardness than a remaining portion of the hammer.

Abstract: A power tool includes a drive mechanism, 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 drive element coupled for co-rotation with the spindle, the first drive element including a first sliding contact surface, and a second drive element rotationally fixed to the housing, the second drive element including a second sliding contact surface engageable with the first sliding contact surface while the spindle rotates. At least one of the first drive element or the second drive element includes an amorphous metal material.

Abstract: An anvil for an impact tool including an impact receiving portion at an end of the anvil, the impact receiving portion including a lug having an impact receiving surface that receives impact from a hammer of the rotary power tool, a shank portion extending from the impact receiving portion, a drive portion located at an end of the shank portion opposite from the impact receiving portion, the drive portion including a plurality of drive surfaces configured to engage a tool bit, and a hardened layer formed on at least one of the drive portion or the impact receiving surface, the hardened layer having a higher hardness than a remaining portion of the anvil. The hardened layer is formed by a heating process.

Abstract: A power tool includes a drive mechanism, 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 drive element coupled for co-rotation with the spindle, the first drive element including a first sliding contact surface, and a second drive element rotationally fixed to the housing, the second drive element including a second sliding contact surface engageable with the first sliding contact surface while the spindle rotates. At least one of the first drive element or the second drive element includes an amorphous metal material.

Abstract: An anvil for an impact tool including an impact receiving portion at an end of the anvil, the impact receiving portion including a lug having an impact receiving surface that receives impact from a hammer of the rotary power tool, a shank portion extending from the impact receiving portion, a drive portion located at an end of the shank portion opposite from the impact receiving portion, the drive portion including a plurality of drive surfaces configured to engage a tool bit, and a hardened layer formed on at least one of the drive portion or the impact receiving surface, the hardened layer having a higher hardness than a remaining portion of the anvil. The hardened layer is formed by a heating process.

Abstract: An electric motor comprising a stator and a rotor assembly at least partially received in the stator. The rotor assembly includes a rotor body, a fan, and a shaft. The rotor body includes a lamination stack which defines a central aperture. The fan is formed separately from the rotor body, and the fan is coupled to the rotor body by a torque coupling. The shaft includes an outer surface. The shaft is pressed into the central aperture of the lamination stack with the outer surface engaged with the central aperture by an interference fit.

Abstract: The disclosure provides, in one aspect, an electric motor comprising a stator and a rotor assembly including a rotor body and a pinion gear integrally formed as a single piece with the rotor body.