Illustrative embodiments of impact tools with impact mechanisms rigidly coupled to electric motors are disclosed. In at least one illustrative embodiment, an impact tool may comprise an impact mechanism, an electric motor, and a control circuit. The impact mechanism may comprise a hammer and an anvil, the hammer being configured to rotate about a first axis and to periodically impact the anvil to drive rotation of the anvil about the first axis. The electric motor may comprise a rotor that is rigidly coupled to the impact mechanism, the electric motor being configured to drive rotation of the hammer about the first axis, The control circuit may be configured to supply a current to the electric motor and to prevent the current from exceeding a threshold in response to the hammer impacting the anvil.

A pavement breaker has a housing, a hammer mechanism mounted within the housing, and at least one handle moveably mounted on the housing. The handle(s) can move in a vertical direction when the pavement breaker is orientated in its normal operation orientation. A sensor is mounted within the housing for detecting when the handle(s) is moved towards or at its uppermost position. If the sensor detects such handle position, the hammer mechanism is deactivated.

A pavement breaker has a housing, a hammer mechanism mounted within the housing, and at least one handle moveably mounted on the housing. The handle(s) can move in a vertical direction when the pavement breaker is orientated in its normal operation orientation. A sensor is mounted within the housing for detecting when the handle(s) is moved towards or at its uppermost position. If the sensor detects such handle position, the hammer mechanism is deactivated.

A nail punching machine for driving in or pulling out rail spikes includes a driving mechanism, which is driven by an electric drive motor. The electric drive motor is supplied with electric power by an accumulator. The nail punching machine is held by an operator by at least one handle.

A nail punching machine for driving in or pulling out rail spikes includes a driving mechanism, which is driven by an electric drive motor. The electric drive motor is supplied with electric power by an accumulator. The nail punching machine is held by an operator by at least one handle.

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.

A power tool includes a motor having a motor shaft, a first intermediate shaft, and a second intermediate shaft extending in parallel to the first intermediate shaft. An output shaft removably holds a tool accessory and has a driving axis extending in parallel to the first and second intermediate shafts. A motion-converting mechanism converts rotation of the first intermediate shaft to linearly hammer the tool accessory. A rotation-transmitting mechanism transmits rotation of the second intermediate shaft to rotate the output shaft. A rotational axis of the motor shaft intersects, or is skewed relative to, the driving axis. A pair of first gears, e.g., bevel gears, operably couples the motor shaft to a first one of the first and second intermediate shafts. A pair of second gears operably couples the first one of the first and second intermediate shafts to a second one of the first and second intermediate shafts.

There is disclosed an orthopaedic impactor, comprising: a strike assembly arranged to impart a force to an object; and a winding arranged to receive a current and thereby generate a magnetic field. The winding is arranged to interact with the strike assembly so that, in use, a magnetic field generated by the winding causes the strike assembly to move so as to impart the force to the object.

A percussion tool comprises a housing and an electric motor positioned within the housing. The percussion tool further comprises a battery pack supported by the housing for providing power to the motor. The battery pack includes a plurality of battery cells having a nominal voltage of up to 120 Volts. The percussion tool further comprises a percussion mechanism driven by the motor and including a striker supported for reciprocation in the housing. The percussion tool has a ratio of impact energy to mass that is greater than or equal to 2.5 Joules/kilogram.

A hand-held power tool includes at least one transmission housing, at least one single-stage transmission unit, at least one motor housing, and at least one compensating unit. The at least one transmission unit is disposed in the at least one transmission housing. The at least one compensating unit includes at least one movably mounted compensating mass element. The at least one compensating unit is disposed at least for the most part in the at least one transmission housing or between the at least one transmission housing and the at least one motor housing.