Wrenches, apparatus, devices and methods of using a T handle with a torque wrench with adjustable torque setting controls having an automated slip function for applications such as for motorcycles, automotive, machinery and the like. The wrench allows for a user to pull up a lock feature which allows the user to selectively set a torque value by rotating the handle. Once a torque setting is made, the lock is pushed down and the wrench can be used to tighten fasteners, such as bolts, nuts, and the like. While tightening, the fastener, the wrench goes into a slip function when the setting has been reached, so that the fasteners, cannot be stripped.

Provided are: an impact fastening tool which prevents a torque detecting means from missing a signal and extends service life by adopting a fixed connector that prevents the trouble of being instantaneously separated (bounced) from a rotating electrode by intermittent impacts and has a shape allowing the progression of friction to be delayed structurally; and a torque tester. Both end portions of the fixed connector are fixed, and at least two protrusion portions are formed between the both end portions. The rotating electrode is disposed between one protrusion portion and the other protrusion portion such that the rotating electrode contacts the fixed connector at two or more points or in a line form. A signal required for the torque detecting means is transmitted through the contact between the rotating electrode and the fixed connector.

A torque socket having a torque adjusting function comprises: a shaft rod having two ends axially extended with an insertion tenon and a core shaft having a shaft hole and having the outer circumference thereof radially formed with a first friction surface; an adjustment member disposed in the shaft hole and having the outer circumference thereof formed with a top connection head and a connecting segment; and a shaft cylinder having two axial ends formed with a shaft slot and a sleeve slot, wherein the interior of the shaft slot is radially formed with a second friction surface being in contact with the first friction surface; when rotating the adjustment member, the outer dimension of the core shaft and the contact area of the first friction surface and the second friction surface can be altered for adjusting the torque.

A torque socket having a torque adjusting function comprises: a shaft rod having two ends axially extended with an insertion tenon and a core shaft having a shaft hole and having the outer circumference thereof radially formed with a first friction surface; an adjustment member disposed in the shaft hole and having the outer circumference thereof formed with a top connection head and a connecting segment; and a shaft cylinder having two axial ends formed with a shaft slot and a sleeve slot, wherein the interior of the shaft slot is radially formed with a second friction surface being in contact with the first friction surface; when rotating the adjustment member, the outer dimension of the core shaft and the contact area of the first friction surface and the second friction surface can be altered for adjusting the torque.

A method of torque control and a torque control apparatus for a pneumatic torque tool are provided. The method includes: connecting a torque control apparatus between an air supply system and a pneumatic torque tool; under predetermined working and control conditions, driving the pneumatic torque tool at the first and second working air pressures to calibrate output torque, and to obtain maximum and minimum torque values; constructing correspondence curve between air pressure and torque value based on the first and second working air pressures and the maximum and minimum torque values obtained; entering any target torque value ranging from minimum torque value to maximum torque value of the correspondence curve to obtain a corresponding working air pressure value and drive the pneumatic torque tool; and verifying whether all working and control conditions are controlled within a predetermined range of variation to control the output torque.

A bolt clamping force sensing washer includes a sensing washer, connection line assembly, and signal processor. The sensing washer includes a body, sensing component, and bushing. The body has an axial hole that matches outer diameter of a bolt's thread. The circumferential surface of the body has a circumferential groove for receiving the sensing component which measures a deformation signal generated by the body under an axial load. Two end surfaces of the body are perpendicular to the axial hole and each have a loosening-proof structure. The bushing is made of metal or plastic or formed by plastic insulating material casting to enclose the sensing component. The signal processor has a signal amplifier, microprocessor, pairing switch, power circuit unit, signal transmission unit, memory unit, RF antenna and alert unit. The connection line assembly is disposed at the bushing to electrically connect the sensing component and signal processor.

An impact tool comprises: a casing; a rotating hammer arranged in the casing and rotatable by a motor; a rotating interface element arranged in the casing and rotatable by the hammer by a series of impacts; an output shaft rotating around a rotation axis, the output shaft having a proximal end fixed to the interface element and a distal end protruding from the casing, the distal end ending with a connecting element for removable connection to an outer mechanical adaptor; a unit of measurement arranged for obtaining torque of the output shaft by a torque sensor mounted to the output shaft, the unit of measurement comprising a fixed measuring assembly mounted integrally to the casing and a rotating measuring assembly mounted so as to rotate integrally with the rotating output shaft; the fixed measuring assembly being configured to generate a supply signal and transmit the supply signal to the rotating measuring assembly to supply electrically the rotating measuring assembly; the rotating measuring assembly being configured to detect a measuring signal indicating the torque and condition the measuring signal in order to be able to send the measuring signal to the fixed measuring assembly; in which the fixed measuring assembly and the rotating measuring assembly comprise electronic devices that execute a two-directional communication in contactless mode by magnetic coupling between the fixed measuring assembly and the rotating measuring assembly, the communication being configured to supply magnetically the torque sensor and permit transmission of the measuring signal conditioned by the rotating measuring assembly to the fixed measuring assembly.

A device for measuring equivalent shear stress between a shield screw conveyor and modified muck includes a spiral shell, a spiral device, a data calculation module and measurement components, the measurement components include a torque measurement component configured to measure spiral driving torque between the spiral device and the modified muck, an angle measurement component configured to measure a conveying angle of the modified muck, a parameter measurement component configured to measure structural parameters of the spiral device, and a density measurement component configured to measure an average density of the modified muck. The torque measurement component, the angle measurement component, the parameter measurement component and the density measurement component are respectively connected to the data calculation module, and the spiral device is installed in the spiral shell.

An impact power tool includes a front housing connected to a rear housing. A motor is disposed at least partially in the rear housing. An impulse case is disposed at least partially in the front housing. The impulse case is operably coupled to the motor to receive torque therefrom and be rotated thereby. A first protrusion is provided on an interior surface of the impulse case. A first blade is provided inside the impulse unit and is configured to be impacted by the first protrusion. An output shaft is partially disposed within the impulse unit and partially projects out of the impulse unit. The output shaft is configured to be rotated in response to the first protrusion impacting the first blade.

An impact power tool includes a front housing connected to a rear housing. A motor is disposed at least partially in the rear housing. An impulse case is disposed at least partially in the front housing. The impulse case is operably coupled to the motor to receive torque therefrom and be rotated thereby. A first protrusion is provided on an interior surface of the impulse case. A first blade is provided inside the impulse unit and is configured to be impacted by the first protrusion. An output shaft is partially disposed within the impulse unit and partially projects out of the impulse unit. The output shaft is configured to be rotated in response to the first protrusion impacting the first blade.