Abstract: An impact wrench motor unit includes a motor and an operating switch. A tool-holder shaft rotates about a rotation axis. A transmission unit percussion mechanism connects the motor unit and the tool-holder shaft. A handlebar structure has two handles for manually gripping the wrench. An electronic control system, containing a control board, connected to electric batteries and the operating switch. The electric motor is simultaneously powered by rechargeable batteries connected in parallel. The control system includes a device for generating three-phase current to the motor, utilizing a first battery generating a first phase, a second battery generating a second phase, and both the first and second batteries for generating a third phase. A ratio of contributions of the first and second batteries to the third phase generation depends on the residual charge state of the batteries. The least charged battery contributes less than the most charged battery.

Abstract: An impact wrench includes a motor producing rotary motion and a motor operating switch. A tool-holder shaft is rotatable about a rotation axis. A transmission unit with a percussion mechanism connects between the motor and the tool-holder shaft. A handlebar structure has two manual gripping handles. An electronic control system contains an electronic control board connected to electric batteries and the operating switch. A motor cooling fan conveys air along the motor. The motor is housed in a motor compartment of the main housing and a heat-sensitive part of the electronic control system, containing an electronic control board housed inside a protected compartment of the main housing. The protected compartment borders directly on the motor compartment and is separated from the motor compartment by a metal radiator directly facing the motor compartment and in heat exchange relation with the heat-sensitive part of the electronic control system.

Abstract: An impact wrench includes a motor unit with a motor adapted to produce a rotary motion and an operating switch for operating the motor. A tool-holder shaft rotatable about a rotation axis. A transmission unit with a percussion mechanism, connects between the motor unit and the tool-holder shaft. A handlebar structure has two manual gripping handles. An electronic control system contains at least one electronic control board connected to one or more electric batteries and to the operating switch. A damping connection system mechanically connects a transmission housing of the transmission unit to a main housing of the motor unit and the main housing to the handlebar structure. The damping connection system includes: one or more first damper elements interposed between the transmission housing and the main housing, and one or more second damper elements interposed between the main housing and the handlebar structure.

Abstract: A working head for a hydrodynamic cutting tool includes a working head, an electro-hydraulic pump adapted to increase the pressure of a hydraulic liquid, and a pressure tube connected between the pump and the working head to communicate the pressure of the hydraulic liquid from the pump to the working head. The working head may be removably connectable to the pressure tube and includes two jaws movable, in response to the increase of the hydraulic liquid pressure, between an open position and a closed position to perform the cutting. A cutting detector may be used to detect the completion of the cutting. A cutting confirmation transmitter may be connected to the cutting detector and configured for a wireless transmission of a cutting completion confirmation signal to a cutting confirmation receiver of the cutting tool.

Abstract: A cutting system comprises a pump adapted to increase the pressure of a hydraulic liquid, a working head which can be positioned distanced from the pump and having two jaws which can be displaced between an open position and a closed position for carrying out the cutting, a pressure flexible tube connected between the pump and the working head, a hand-held remote control for actuating and controlling the pump from a distance, a cutting detector connected to the working head to detect the completion of the cutting, an actuation communication assembly adapted to provide pump actuation signals from the remote control to the pump, a cutting confirmation communication assembly adapted to provide cutting completion information from the cutting detector to the user, wherein the actuation communication assembly comprises a wireless connection and also the cutting confirmation communication assembly comprises a wireless connection.

Abstract: A working head for a hydrodynamic cutting tool, of the type comprising: a working head, an electro-hydraulic pump adapted to increase the pressure of a hydraulic liquid, and a pressure tube connected between the pump and the working head to communicate the pressure of the hydraulic liquid from the pump to the working head, wherein a working head is removably connectable to the pressure tube and comprises two jaws movable, in response to the increase of the hydraulic liquid pressure, between an open position and a closed position to perform the cutting, a cutting detector configured to detect the completion of the cutting, a cutting confirmation transmitter connected to the cutting detector and configured for a wireless transmission of a cutting completion confirmation signal to a cutting confirmation receiver of the cutting tool.

Abstract: A portable cutting apparatus (1) for the in situ truncation of railway rails (9) comprises a rail saw (2) having a motor (3) with a cyclic movement output member (4), a plate holder (5) adapted to carry an abrasive blade (6) and a movement transmitter (7) engaging the motor output member (4) and the plate holder (5) to set the plate holder (5) in a cyclic movement, a linkage structure (27) with a rail connector (29) and a saw connector (31) and a sawing position alternator (45) to autonomously and alternately move the plate holder (5) to and fro.

Abstract: A portable apparatus (1) for the tooling of a workpiece (9) comprises a motor (3) with a cyclic movement output member (4), a tool holder (5) adapted to carry a tool (6) and a movement transmitter (7) engaging the motor output member (4) and the tool holder (5) to set the tool holder (5) in a cyclic movement, wherein the movement transmitter (7) comprises a transmission ratio adjuster (8) that, in response to a preset reduction of the cyclic movement speed (?_m) of the output member (4) of the motor, increases the transmission ratio (?_m/?_ph) thereby reducing the cyclic movement speed (? ph) of the tool holder (5) with respect to the cyclic movement speed (?_m) of the output member (4) of the motor (3).

Abstract: A portable apparatus (1) for the tooling of a workpiece (9) comprises a motor (3) with a cyclic movement output member (4), a tool holder (5) adapted to carry a tool (6) and a movement transmitter (7) engaging the motor output member (4) and the tool holder (5) to set the tool holder (5) in a cyclic movement, wherein the movement transmitter (7) comprises a transmission ratio adjuster (8) that, in response to a preset reduction of the cyclic movement speed (?_m) of the output member (4) of the motor, increases the transmission ratio (?_m/?_ph) thereby reducing the cyclic movement speed (? ph) of the tool holder (5) with respect to the cyclic movement speed (?_m) of the output member (4) of the motor (3).

Abstract: A portable cutting apparatus (1) for the in situ truncation of railway rails (9) comprises a rail saw (2) having a motor (3) with a cyclic movement output member (4), a plate holder (5) adapted to carry an abrasive blade (6) and a movement transmitter (7) engaging the motor output member (4) and the plate holder (5) to set the plate holder (5) in a cyclic movement, a linkage structure (27) with a rail connector (29) and a saw connector (31) and a sawing position alternator (45) to autonomously and alternately move the plate holder (5) to and fro.

Abstract: An impact mechanism (12) for an impact wrench comprises an anvil (8) with a middle portion (13), at least one abutment surface (14) radially protruding therefrom, which forms at least one abutment surface (15), a hammer (4) with an impact surface (16) suitable to give rotational pulses to the anvil (8) by the impact surface (16) hitting the abutment surface (15). The anvil (8) comprises a first connection area (17) connecting the abutment portion (14) to the middle portion (13) within the axial extension of the abutment surface (15) and the middle portion (13) and a reinforcement rib (18) axially arranged out of the abutment surfaces (15) that connects the abutment portion (14) to the middle portion (13) of the anvil (8), thereby forming a second connecting area.

Abstract: An impact motorized wrench includes a tool-holder shaft arranged on a front side of the wrench and pivoting around a rotation axis, a rotary motion producing motor unit arranged on a rear side of the wrench opposite the front side and an operating member to operate the motor unit, a drive unit with a percussion mechanism being arranged between the motor unit and the tool-holder shaft. The motor unit, the drive unit and the percussion mechanism together form a base body of the wrench and the wrench includes two gripping handles attached to the base body, both being of elongated shape and transversally spaced apart relative to their longitudinal extensions. The handles define a common gripping plane tangential to both handles, which plane extends transversally to the rotation axis. The operating member is associated to one of the two handles.

Abstract: An impact mechanism (12) for an impact wrench comprises an anvil (8) with a middle portion (13), at least one abutment surface (14) radially protruding therefrom, which forms at least one abutment surface (15), a hammer (4) with an impact surface (16) suitable to give rotational pulses to the anvil (8) by the impact surface (16) hitting the abutment surface (15).

Abstract: An impact motorized wrench (1) comprises a tool-holder shaft (2) arranged on a front side (F) of the wrench (1) and pivoting around a rotation axis (R), a rotary motion producing motor unit (3) arranged on a rear side (P) of the wrench (1) opposite the front side (F) and an operating member (5) to operate the motor unit (3), a drive unit (6) with a percussion mechanism (7) being arranged between the motor unit (1) and the tool-holder shaft (2). The motor unit (3), the drive unit (6) and the percussion mechanism (7) together form a base body (8) of the wrench (1) and the wrench (1) comprises two gripping handles (9, 10) attached to the base body (8), both being of elongated shape and transversally spaced apart relative to their longitudinal extensions. The handles (9, 10) define a common gripping plane (A) tangential to both handles (9, 10), which plane (A) extends transversally to the rotation axis (R). The operating member (5) is associated to one of the two handles (9, 10).