A method of verifying a magnitude of a delivered output torque during a tightening operation of a threaded joint performed by a hand held power wrench including a housing, a motor, an output shaft, and a power transmission connecting the motor to the output shaft. The method includes: tightening the threaded joint; monitoring a magnitude of a direct torque acting along the power transmission during the tightening by at least one direct torque indicating sensor; monitoring a magnitude of a reaction torque transferred via the housing during the tightening by at least one reaction torque sensor; comparing the monitored magnitude of the direct torque with the monitored magnitude of the reaction torque; and determining, based on the comparison, whether the accuracy of the delivered output torque is acceptable.

A wrench head for a universal wrench is disclosed that may include a housing having an upper portion and a lower portion. The wrench head may further include a base plate positioned inside the housing towards the upper portion of the housing, and a plurality of push-rods positioned inside the housing. The wrench head may further include a resilient member positioned inside the housing between the base plate and the distal end of each of the plurality of push-rods. In the default position, the resilient member biases each of the plurality of push-rods, and in the retracted position, the proximal end of each of the plurality of push-rods is pushed against the resilient member to be received along with a portion of the resilient member by a compartment of the plurality of compartments defined at the bottom surface of the base plate.

In a tightening method for a screw connection of a bolt and a nut by using a tensioning device, a rotary drive, and a process control unit with documentation module, the nut is tightened with the rotary drive by a tightening moment required for the nut to bear against a support. The screw connection is elongated by exerting axial tension on a threaded end of the bolt protruding from the nut. The nut is further tightened while maintaining elongation, and a rotation angle covered during further tightening is detected by a rotation angle sensor. Lengthening of the bolt is calculated from the rotation angle and thread geometry of the screw connection. A longitudinal force in the threaded bolt is calculated from lengthening of the bolt, bolt diameter and bolt length. The calculated longitudinal force and an identifier identifying the screw connection are stored in the documentation module.

The present disclosure relates to an electronic torque tool, a calibration fixture, and a method for calibrating the electronic torque tool. The calibration includes applying a torque to the torque wrench and releasing the applied torque once the applied torque reaches a full scale calibration torque. The calibration fixture holds and displays a peak value of the applied torque and the torque wrench holds and displays a measured peak value of the applied torque. The measured peak value on the torque wrench may then be adjusted, by incrementing or decrementing the displayed value, to match the peak value displayed on the calibration fixture.

Calibration device for dynamometric tools, such as for example a torque wrench (C) for tightening, comprising a sliding mechanical structure (2) associated with a frame of a test bench (B), which allows to impart a force and a controlled rotation in such a torque tool, said tool having its clamping tool (T) engaged in a brake (F) placed on the bench (B), which simulates a clamping of a bolt. Said mechanical structure comprises a pair of longitudinal bars (3) which can be connected to said bench, on which at least one guide (4) is mounted transversely, and on this guide there is a support (5) which slides by means of movement means in the transverse direction (Y) and is provided with constraint means for the tool body, so that the tool is pivoted on the brake (F) with its tool head (T) and can rotate to simulate a tightening brake F when the support (5) is moved along this guide (4). Said means for constraining the tool body to the support (5) comprise a slide (7) to which the handle (I) of the tool is fixed, which slides along a slider (8) parallel to the wrench which at one of its ends is pivoted on the brake fulcrum (F) and can rotate around it, said slider (8) being constrained to the support (5), so that the support (5) allows the slider and the tool to rotate together.

A torque socket tool is provided, including: a main body, a driving member, an engaging member, a torque adjustment assembly and a rotating member. The main body defines an axial direction and has a first restricting portion. The driving member is rotatably disposed on the main body about the axial direction. The engaging member is slidably disposed on the main body. The torque adjustment assembly includes a mandrel. The mandrel is disposed within the main body and rotatable about the axial direction. The rotating member is non-rotatably sleeved with the mandrel and has a second restricting portion.

A torque limiting device (30) connectable to a load carrier, such as a load carrier foot (10), and adapted for indicating a torque imparted by a user, the torque limiting device (30) comprising a torque limiter (50), a connection member (31) adapted to be connected to the load carrier foot (10) and a head portion (40) arranged on the connection member (31), the head portion (40) comprising a first and a second member (41, 42). The disclosure also relates to a load carrier foot (10) comprising the torque limiting device (30). The torque limiting device (30) is specifically adapted to be user friendly and has a space saving configuration.

An angle wrench has a simple structure and is capable of accurately measuring rotation angle. The angle wrench is used for tightening an object to be tightened by means of the rotation angle method, and includes a handle having a grip; a head section having a tightening head for tightening the object to be tightened, and a tail section that extends from the tightening head pivotally supported with respect to the handle via a head pin; torque-detecting mechanisms for detecting when the torque for tightening the object being tightened reaches the specified torque; and a rotation angle-measuring section for measuring the rotation angle of the angle wrench in a tightening action, on the basis of the angular velocity of the angle wrench around the axis of the object being tightened, after the torque-detecting mechanism has detected that the specified torque has been reached.

The present disclosure relates to a tool including one or more shock absorption components disposed in the tool and adapted to protect various components of the tool in the event the tool is dropped or otherwise sustains an impact force. In an embodiment, the tool includes shock absorption foam disposed above and below an electronic display. The tool may also include a shock absorption component disposed under an end cap of the tool to absorb a shock or impact force to the tool when the tool is dropped on the end cap.

The present invention provides an electronic wrench and wireless connection and charge module thereof. The wireless connection and charge module is detachably combined to the electronic wrench and electrically connected with the sense control device of the electronic wrench. The wireless connection and charge module is modularized and provided with power charging and wireless signal transmission functions. When the mechanical structure of the electronic wrench is damaged and unusable, the wireless connection and charge module is allowed to be detached from the original electronic wrench to be re-installed on another electronic wrench for future usage.