A hydraulic tool having a body, a frame in which a stationary tool for machining a workpiece and a movable tool are disposed, a cylindrical piston, and a rapid-advance piston connected to the body, wherein the rapid-advance piston has a barrel part being in contact with the piston, a connection part disposed at the rear end of the barrel part and connected to the body, a screw part formed in the connection part, and a D-cut face formed on the barrel part. A fixation member disposed in the body so as to be positioned in the vicinity of the D-cut face is also provided. The D-cut face is formed along a direction orthogonal to a line that connects the center point of the barrel part to the center point of the fixation member, and the rapid-advance piston is prevented from rotating by the fixation member.

A counter to monitor an amount of tool use that includes a fluid passage (23) with an inlet (21) and an outlet (22). A piston (30) and sensor target (50) (e.g., magnet) are positioned along the passage and are biased towards a first position by a biasing member (40). When the tool is not in operation, the piston and sensor target are located at a first position due to the biasing force. When the tool is in operation, fluid moves along the fluid passage. A force applied by the moving fluid on the piston and sensor target overcomes the force applied by the biasing member and moves the piston and sensor target along the fluid passage to a second position. A sensor is configured to sense the sensor target at the second position. A processing circuit (62) determines the tool usage based on the detection of the sensor target at the second position by the sensor.

A hand expansion device is capable of expanding pipe ends. The device includes an expanding head, which can be actuated by an electric motor and/or by a hydraulic medium and which has a plurality of segments. The segments can be actuated by an expanding mandrel that can be moved in the direction of a longitudinal axis of the expanding head. The segments are expanded in a direction which is transverse to the movement direction of the expanding mandrel as the result of a first triggering of an expansion process. A second activation of the hand expansion device is only allowed if it is determined that the hand expansion device was rotated around the longitudinal axis a predetermined angle.

An electro-hydraulic pump for hydrodynamic compression tools which comprises a pump housing carrying an electric motor and a hydrodynamic group for pressurizing a hydraulic liquid, a control circuit for controlling the electric motor, a flexible pressure hose connected to the hydrodynamic group, and a work head of the tool to communicate the hydraulic liquid pressure to the work head. A flexible control cable connects the control circuit in the pump housing to a hand held remote control. The hand held remote control comprises an actuating button for starting the electric motor and a button for selecting an operation mode of the electro-hydraulic pump from a plurality of pre-set operation modes, as well as a multifunction display which shows the selected operation mode.

A hydrodynamic compression tool comprises an electrical motor, which can be powered by a control circuit, a hydraulic pump which can be actuated by the motor so as to increase the pressure of a hydraulic liquid acting on an actuating piston, two jaws, which can be mutually moved by the actuating piston between an open position and a closed position for carrying out the compression or the cut, an actuating button, which acts on a switch of the control circuit to actuate the motor, a return device which returns the jaws to the open position by a return of the hydraulic fluid from the actuating piston towards the hydraulic pump through a return valve, and a mechanism for delaying the opening of the return valve via the return device, so as to allow verification of the position of the jaws before the return of the jaws to the open position.

A method for operating an electromechanical or electrohydraulic working device or rescue device is performed by an operator person and can be used autonomously. The working/rescue device includes a cutting tool having two cutting tool halves movable toward and away from one another and define a virtual cutting plane by their movement. The working/rescues device includes a housing; an electric motor; a pump or mechanical transmission, each driven by the electric motor for actuating the tool insert. An exchangeable rechargeable electrical energy source is in/on a device side of the working/rescue device and includes a housing. During operation of the working/rescue device, orientation of the working/rescue device is sensed and the relationship between the angular position of the working/rescue device cutting plane and the force applied by the cutting tool to the object to be cut is established and the working/rescue device is controlled in dependence on the relationship.

The present invention relates broadly to a flow diverter disposed in a plenum area of a motor cylinder chamber (also referred to as kidney ports). The flow diverter acts as a barrier between a main inlet to the motor and an inlet to the cylinder chamber, and directs air or fluid to vane lifter ports of the motor before the air or fluid flows to the inlet to the cylinder chamber. In addition, the flow diverter can serve to regulate air or fluid flowing into the cylinder chamber to control power of the tool. The flow diverter allows for numerous options of where the main inlet to the motor can be positioned and provides a means of regulating the air or fluid flowing into the cylinder chamber.

A reversing mechanism for a pneumatically or hydraulically powered tool having a rotor adapted to selectively rotate in either one of first and second rotational directions. The reversing mechanism allows a user to actuate a button that rotates a valve to direct air flow through the tool. By pressing the button, the button will move a base laterally, and in doing so, rotates the valve. Rotating the valve distributes fluid to cause the rotor to rotate in a selected rotational direction.

A working head for a hydraulic power tool including a head frame and a first moveable die head configured to move along the working head frame. The first moveable die head configured to receive a first moveable die comprising a first body length. A second die head is adapted to receive a second die comprising a second body length. The first body length of the moveable die is different from the second body length of the stationary die.

Inserts disposed in a housing of a pneumatically or hydraulically powered tool having a motor adapted to rotate a drive lug in either of first and second rotational directions. The insert is composed of a material resistive to creep and/or stress relaxation. The insert contacts fasteners applying a clamping force to the tool and remove the housing from the load path of the clamping force, thereby reducing the possibility of fluid leaks.