Abstract: The present specification relates to a two-speed power transmission for a power tool comprising a planetary gear and a torque responsive gear shift mechanism for directing torque through the planetary gear in a high torque/low speed mode or past the planetary gear in a low torque/high speed mode, and comprising a driving member, a driven member, and a number of coupling elements arranged to intercouple in a first position the driving member and the driven member and in a second position the planetary gear and the driven member, the driving member comprising a number of recesses and axially acting first cam means for cooperation with the coupling elements in the first position forming part thereof. The present specification also relates to power tool comprising such a gear unit and a method for controlling such a power tool.

Abstract: A constant-velocity joint assembly for a power tool includes an output shaft and a coupling structure configured to drive the output shaft. The output shaft and the coupling structure form a joint configured to enable angling of the output shaft relative to the coupling structure at constant rotational speed, and the coupling structure is provided with a torque transducer configured to detect a torque acting on the coupling structure provided by the output shaft.

Abstract: Disclosed is a socket unit comprising a first body portion comprising a first rear end portion for connection to the output shaft of a power tool and a front end portion adapted for engagement with a screw joint and a second body portion comprising a second rear end portion for connection to the output shaft of the direct driven power tool or a second front end portion adapted for engagement with a screw joint. The second body portion is at least partly arranged in the first body portion, and a relative rotation between the first and second body portions is allowed, such that one of the first and second body portions may rotate over a predetermined allowable angular range when the other is in engagement with the screw joint. The present specification also relates to a corresponding method, power tool and computer readable storage medium.

Abstract: The present specification relates to a power tool comprising an input shaft and an output shaft and a two-speed power transmission comprising a planetary gear and a gear shift assembly for directing torque through or past the planetary gear comprising a driving member, a driven member and an axially movable coupling sleeve arranged to intercouple in a first position the driving member and the driven member and to intercouple in a second position the planetary gear and the driven member. A linear actuator is arranged to displace the coupling sleeve between the first and second position, wherein the linear actuator comprises a linearly movable push bar arranged for displacing the coupling sleeve. The present specification also relates to a method in and a two-speed power transmission for such a power tool.

Abstract: The present specification relates to a two-speed power transmission for a power tool comprising a planetary gear and a torque responsive gear shift mechanism for directing torque through the planetary gear in a high torque/low speed mode or past the planetary gear in a low torque/high speed mode, and comprising a driving member, a driven member, and a number of coupling elements arranged to intercouple in a first position the driving member and the driven member and in a second position the planetary gear and the driven member, the driving member comprising a number of recesses and axially acting first cam means for cooperation with the coupling elements in the first position forming part thereof. The present specification also relates to power tool comprising such a gear unit and a method for controlling such a power tool.

Abstract: The present disclosure relates to a power tool attachment part for a power tool. The power tool attachment part comprises an elongate housing including an upper housing part and a lower housing part interconnected with the upper housing part, an input gear wheel for connection to an output shaft of a power wrench, which input gear wheel is arranged at a first end of the housing, an output gear wheel with an output connection, which output gear wheel is arranged at a second end of the housing, at least one intermediate gear wheel, which is arranged inside the housing to transmit the rotation of the input gear wheel to the output gear wheel, and at least one torque sensor configured to measure a deformation of the elongated housing.

Abstract: An electric power tool for tightening screw joints includes a housing that encloses an electric motor, an angle gear, a back torque transducer, and a front torque transducer. The angle gear includes an input bevel gear drivingly connected to the electric motor and an output bevel gear drivingly connected to an output shaft of the electric power tool. The back torque transducer is arranged to measure a back torque reaction value before the input bevel gear. And the front torque transducer is arranged to measure a front torque reaction value after the output bevel gear.

Abstract: An electric pulse tool includes an electric motor drivingly connected to a flywheel, an output shaft drivingly connected to a drive element, and a compression spring. The electric pulse tool is operative to oscillate the flywheel between a first and a second direction. The flywheel is configured to drive the drive element in the first direction to provide a torque pulse on the output shaft in the first direction, whereby the drive element compress the compression spring. The drive element is configured to drive the flywheel in the second direction, when the compression spring is decompressed and forces the drive element to rotate in the second direction.

Abstract: An electric pulse tool includes an electric motor drivingly connected to a flywheel, an output shaft drivingly connected to a drive element, and a compression spring. The electric pulse tool is operative to oscillate the flywheel between a first and a second direction. The flywheel is configured to drive the drive element in the first direction to provide a torque pulse on the output shaft in the first direction, whereby the drive element compress the compression spring. The drive element is configured to drive the flywheel in the second direction, when the compression spring is decompressed and forces the drive element to rotate in the second direction.

Abstract: A constant-velocity joint assembly for a power tool includes an output shaft and a coupling structure configured to drive the output shaft. The output shaft and the coupling structure form a joint configured to enable angling of the output shaft relative to the coupling structure at constant rotational speed, and the coupling structure is provided with a torque transducer configured to detect a torque acting on the coupling structure provided by the output shaft.

Abstract: An electric power tool for tightening screw joints includes a housing that encloses an electric motor, an angle gear, a back torque transducer, and a front torque transducer. The angle gear includes an input bevel gear drivingly connected to the electric motor and an output bevel gear drivingly connected to an output shaft of the electric power tool. The back torque transducer is arranged to measure a back torque reaction value before the input bevel gear. And the front torque transducer is arranged to measure a front torque reaction value after the output bevel gear.