Abstract: A hand held electric pulse tool performs tightening operations in which torque is delivered in pulses to tighten a screw joint. The tool includes an output shaft and a sensor to determine a parameter value associated with tightening of the screw joint. The tool is operative to provide torque pulses on the output shaft in a tightening direction until a first parameter value associated with the tightening of the screw joint is reached, then pause the tightening during a first time interval, and then provide torque pulses on the output shaft in a loosening direction until a second parameter value is reached. Next the electrical pulse tool is operative to pause the tightening during a second time interval and provide torque pulses on the output shaft in the tightening direction until a third parameter value is reached.

Abstract: An electric pulse tool for performing tightening operations, where torque is delivered in pulses to tighten a screw joint, includes an output shaft, a sensor arranged to determine a parameter value associated with the tightening of the screw joint, a processor, and a memory containing instructions executable by the processor. The electrical pulse tool operates to provide torque pulses on the output shaft in a first direction until the determined parameter value associated with the tightening of the screw joint reaches within or above a predetermined first interval including a target parameter value. The electrical pulse tool also operates to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction in case the determined parameter value exceeds the target parameter value within a predetermined second interval.

Abstract: A hand held electric pulse tool performs tightening operations in which torque is delivered in pulses to tighten a screw joint. The tool includes an output shaft and a sensor to determine a parameter value associated with tightening of the screw joint. The tool is operative to provide torque pulses on the output shaft in a tightening direction until a first parameter value associated with the tightening of the screw joint is reached, then pause the tightening during a first time interval, and then provide torque pulses on the output shaft in a loosening direction until a second parameter value is reached. Next the electrical pulse tool is operative to pause the tightening during a second time interval and provide torque pulses on the output shaft in the tightening direction until a third parameter value is reached.

Abstract: An electric hand held pulse tool for performing tightening operations where torque is delivered in pulses to tighten screw joints. The pulse tool includes a bidirectional electric motor, an output shaft, a sensor for monitoring a parameter reflecting a delivered torque pulse, and a control unit for controlling the electric motor. The sensor provides information regarding the monitored parameter to the control unit. The control unit, during a tightening operation performed by the pulse tool in a first direction, controls the motor to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction. The sensor monitors a parameter reflecting a delivered torque pulse on the output shaft in the second direction. The control unit also determines information about the nature and state of a joint, due to the torque pulse on the output shaft in the second direction.

Abstract: An electric pulse tool for performing tightening operations, where torque is delivered in pulses to tighten a screw joint, includes an output shaft, a sensor arranged to determine a parameter value associated with the tightening of the screw joint, a processor, and a memory containing instructions executable by the processor. The electrical pulse tool operates to provide torque pulses on the output shaft in a first direction until the determined parameter value associated with the tightening of the screw joint reaches within or above a predetermined first interval including a target parameter value. The electrical pulse tool also operates to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction in case the determined parameter value exceeds the target parameter value within a predetermined second interval.

Abstract: An electric hand held pulse tool for performing tightening operations where torque is delivered in pulses to tighten screw joints. The pulse tool includes a bidirectional electric motor, an output shaft, a sensor for monitoring a parameter reflecting a delivered torque pulse, and a control unit for controlling the electric motor. The sensor provides information regarding the monitored parameter to the control unit. The control unit, during a tightening operation performed by the pulse tool in a first direction, controls the motor to provide at least one torque pulse on the output shaft in a second direction that is opposite to the first direction. The sensor monitors a parameter reflecting a delivered torque pulse on the output shaft in the second direction. The control unit also determines information about the nature and state of a joint, due to the torque pulse on the output shaft in the second direction.