A communication port interface facilitates charging of a power source, such as a battery, while the power source remains coupled to a tool. The communication port interface also facilitates downloading of torque and/or angle log information from an electronic torque tool to an external device. Torque and/or angle preset job information may be entered in client software and uploaded from the external device to the electronic torque tool via the communication port interface. Additional information including real time clock information and wrench system parameters may be uploaded to the electronic torque tool via the communication port interface.

A surface marked threaded fastener comprising an elongated and threaded shaft and a head at one end of the elongated and threaded shaft; said head comprising on a surface contacting face a readable matrix comprising a dot pattern, said dot pattern defining a tightening specification.

An interactive software application on a mobile computing device is used to configure an electronic torque wrench via a wireless connection. The software application obtains torque specifications for a vehicle from a remote database. When the torque specification require that work pieces be torqued in an ordered sequence, the software application guides the technician through the sequence, but accommodates changes when the technician departs from the sequence.

A bolt clamping force transducer for a bolt tightening operation is introduced to tighten a bolted joint by driving a torque rotating shaft in a clamping force transducer, such that a helical mechanism at one end of the torque rotating shaft generates an axial force for pressing a force sensing module and thus generates a strain value thereof. A socket is driven by the other end of the torque rotating shaft, thereby generating a clamping force under which the bolted joint of a specific specification is tightened. A parameter relation between the strain value and the clamping force is calibrated with a standard axial force gauge to facilitate calculation and control of the clamping force during the tightening process where the bolted joint fitted to any torque tool is sensed to control the precision of the clamping force being exerted on the bolted joint, thereby enhancing the quality thereof.

An extensive shaft assembly includes a casing, an extensive shaft, a sensor, a warning apparatus, and a connecting apparatus. The extensive shaft extends throughout the casing. The sensor is connected to the extensive shaft. The warning apparatus includes an LED module and a light-guiding ring. The light-guiding ring includes a slit. The LED module is electrically connected to the sensor and located in the slit of the LED module. The connecting apparatus connects the light-guiding ring to the casing so that an external annular portion of the light-guiding ring is visible through a gap between the casing and the connecting apparatus.

A screw device (10) for applying a torque to a screw partner (20), includes a flat output assembly (1) having an output (1b) detachably connected to the screw partner (20) and a drive (1a), to which a drive torque can be manually or mechanically applied. A detection assembly (5) for providing measurement values for determining and/or monitoring an output torque acting on the screw partner on the output side, is provided in a housing (30) of the flat output assembly (1) and can detect a radial a force and/or a tangential force acting on a gearwheel (4d) which connects the drive and the output of the flat output assembly (1) in a torque-transmitting manner, and provides same for electronic signal evaluation.

A power tool attachment part for a power tool, comprising: an elongate housing including an upper housing part and a lower housing part interconnected with the upper housing part, an input gear wheel configured to be connected 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, an intermediate gear wheel arranged inside the housing and configured to transmit rotation of the input gear wheel to the output gear wheel, a socket arranged concentrically with and radially inside the output gear wheel, and a torque sensor configured to measure the strain on the socket and thereby obtain a measure of the torque at the output gear wheel.

A power tool attachment part for a power tool, comprising: an elongate housing including an upper housing part and a lower housing part interconnected with the upper housing part. An input gear is configured to be connected to an output shaft of a power wrench, which input gear is arranged at a first end of the housing. An output gear has an output interface. The output gear is arranged at a second end of the housing. A first intermediate gear is arranged inside the housing and configured to transmit torque of the input gear to the output gear. The first intermediate gear is rotationally mounted on a first intermediate gear shaft. A torque sensor is configured to measure radial forces acting on the first intermediate gear shaft to thereby obtain a measure of the torque at the output gear.

The invention relates to a screw device for applying torque to a screw partner (12), comprising flat output assembly (10) provided with an output member that can be detachably connected to the screw partner and a drive to which a drive torque can be manually or mechanically applied, particularly by an interconnected angular and/or bevel gear (16), and an assembly (48) for detecting an output torque acting on the screw partner on the output side, the detection assembly associated with the flat output assembly and particularly provided on and/or in a housing (30 32) of the flat output assembly being designed such that it can detect an axial force acting on a helical gear (38) connecting the drive and the output member of the flat output assembly in a torque-transmitting manner and provide same for preferably electronic signal evaluation.

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.