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.

Provided is an electric tool with which work efficiency can be improved. A controller of an electric tool can execute: a first control, whereby during a non-operating state after a motor has started up and before a tip tool is set to be in an operating state, the motor is driven at a slow idling rotation speed, and when the tip tool is set to be in the operating state, the motor is driven at a normal rotation speed which is higher than the slow idling rotation speed; and a second control, whereby in a case where a trigger switch has been turned off in a state where the motor is being driven at the normal rotation speed and the trigger switch is thereafter turned on again under a prescribed condition, the motor is driven at the normal rotation speed regardless of the state of the tip tool.

A power tool having a hammer mechanism includes a first housing, a motor housed in the first housing, a second housing that at least partially covers the first housing, and a controller housed in the second housing. The second housing is coupled to the first housing via at least one elastic member to be movable relative to the first housing in a first direction that is parallel to the driving axis. The second housing has at least one opening for wiring. The at least one opening communicatively connects an inside and an outside of the second housing. At least one electric wire extends from the controller to the outside of the second housing through the at least one opening.

A battery-operated tool is disclosed for use in the rail industry. In some embodiments, the battery-operated tool may comprise a battery-operated spike driver configured to drive in spikes configured to hold rails for a railway onto a fixed point. The battery-operated tool may include or otherwise be connected to a battery management system. The battery management system may be configured to manage the power supplied to the battery-operated device via one or more batteries. In various embodiments, the one or more batteries may comprise a set of rechargeable batteries connected in series or in parallel. In some embodiments, the battery management system may be attached to or included within the battery-operated device. In other embodiments, the battery management system may be physically separate from the battery-operated device. For example, the battery management system may be included within a separate battery pack that includes the set of batteries.

Power tool devices described herein include a housing, a power source interface, a field effect transistor within the housing connected between the power source interface and a load of the power tool device, and an electronic processor coupled to the field effect transistor. The electronic processor is configured to control the field effect transistor to drive the load and measure a voltage at a terminal of the field effect transistor. The electronic processor is also configured to determine the current flowing through the field effect transistor based on the voltage without using a shunt resistor.

A door breaching device includes a longitudinal chassis having a first extremity, a piston assembly with a piston rod adapted for linear displacement within a piston chamber, a hydraulic pump operatively connected to the piston assembly, and a two-part head assembly with a fixed jaw attached to the first extremity of the longitudinal chassis and a moveable jaw operatively connected to an end of the piston rod proximate to the first extremity. When the device is in a rest position, the piston rod is in a retracted position within the piston chamber to allow portions of the fixed jaw and the moveable jaw to fit between a first surface and a second surface. Upon actuation of the door breaching device, the piston rod is linearly displaced from the retracted position and the movable jaw applies a force to increase a distance between the first surface and the second surface.

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 portable power tool has a tool holder 2, a motor 8 and an electro-pneumatic striking mechanism 4. The striking mechanism includes an excitation piston 13, a striker 14, a pneumatic chamber 18 for coupling the striker 14 to the excitation piston 13 and an anvil 15 which is arranged in the striking direction 5 downstream of the striker 14 and is provided for transmitting a blow of the striker to the tool. The anvil is hollow. The hollow interior space 23 is closed in the striking direction 5 and counter to the striking direction 5.

A hand-held power tool includes an electric motor, a tool unit, and at least one operating unit. A motor switching unit is configured to sense a contact-pressure characteristic between the tool unit and the operating unit, and configured to switch the electric motor at least partially in dependence on the contact-pressure characteristic.

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.