Abstract: A torque wrench with double drive ends includes a handle having at least two hollow tubular bodies coaxially connected with each other, two drive heads respectively disposed at two ends of the handle, and a double torque adjustment mechanism including at least one adjustment member, two slide blocks and two elastic members. The two slide blocks are movable within the two tubular bodies. The adjustment member is positioned between the two slide blocks for driving the two slide blocks. The two elastic members are respectively positioned between the two slide blocks and the tubular bodies. By means of the adjustment member, the elastic force applied by the elastic members to the drive heads the can be adjusted to set the torque values thereof.

Abstract: A wrench with multiple display windows includes a body, two side display window lighting modules and a main display window lighting module. The two side display window lighting modules are illuminated synchronously with each other. The two side display window lighting modules are corresponding to each other. The two side display window lighting modules, are illuminated toward a first optical axis and a second optical axis. The side display window lighting module includes side display window lighting elements configured to generate side display wind ow colors which are turned on or turned off according to the torque. The main display window lighting module is connected to the body and illuminated toward the first optical axis. The main display window lighting module includes main display window lighting elements configured to generate main display window colors which are turned on or turned off according to the torque.

Abstract: A dust proof structure for a stress-sensible screw is provided. The dust proof structure includes a sensing screw, a head, a dust proof boot and a displayer. The sensing screw includes a base and at least one exposed lead, and the exposed lead is located in the base and transmits a stress signal. The head includes a lead base, the head is fitted with the base, and the exposed lead is detachably connected to the lead base. The dust proof boot is disposed on the head, and sleeves a connecting portion between the lead base and the exposed lead. The displayer is electrically connected w the had for displaying the stress signal.

Abstract: A spring compensation structure for a torque wrench includes a body, a compensation component and an engaging head. The body has a first connecting portion, The compensation component is installed on the body and has a compensation distance, wherein one end of the compensation component is abutted on the first connecting portion of the body. The engaging head has a second connecting portion; the second connecting portion is detachably disposed on the body and is abutted on the other end of the compensation component, wherein a distance between the second connecting portion and the first connecting portion is equal to the compensation distance.

Abstract: A collapsible torque wrench includes: a shank having a drive head at a front end and two pivoted ends at a rear end; a connection rod, a front end of which being pivotally connected with the first pivoted end; a housing having a tubular body and a casing fixedly disposed on one side of the tubular body, the connection rod being relatively slidably fitted in the tubular body; a torque adjustment mechanism being mounted in the tubular body and including a fixing block, the fixing block being mounted in the tubular body by at least two pins; and a stop member received in the casing. A front end of the stop member is pivotally connected with the second pivoted end. The fixing block is easily demounted from the tubular body for replacement.

Abstract: A collapsible torque wrench includes: a shank having a drive head at a front end and two pivoted ends at a rear end; a connection rod, a front end of which being pivotally connected with the first pivoted end; a housing having a tubular body and a casing fixedly disposed on one side of the tubular body, the connection rod being relatively slidably fitted in the tubular body; a torque adjustment mechanism being mounted in the tubular body and including a fixing block, the fixing block being mounted in the tubular body by a plurality of pins; and a stop member received in the casing. A front end of the stop member is pivotally connected with the second pivoted end. The fixing block is easily demounted from the tubular body for replacement.

Abstract: A torque screwdriver includes a handle, a tube body, a torque adjusting mechanism, a tripping mechanism, a driving base and a driving head. The tube body is connected to the handle. The torque adjusting mechanism is disposed in the tube body and for providing a predetermined torque value. The tripping mechanism is disposed in the tube body, and one end of the tripping mechanism is pushed by the torque adjusting mechanism. The driving base is disposed in the tube body and located in the tube body, and one end of the driving base is pushed by the other end of the tripping mechanism. The driving head is connected to the tube body, the driving head is embedded between the driving base and an inner wall of the tube body, wherein a gap is formed between the driving head and the tube body.

Abstract: A spring compensation structure for a torque wrench includes a body, a compensation component and an engaging head. The body has a first connecting portion. The compensation component is installed on the body and has a compensation distance, wherein one end of the compensation component is abutted on the first connecting portion of the body. The engaging head has a second connecting portion; the second connecting portion is detachably disposed on the body and is abutted on the other end of the compensation component, wherein a distance between the second connecting portion and the first connecting portion is equal to the compensation distance.

Abstract: A nut includes a thread portion and a pressing portion. The thread portion is formed at an end of the nut. The thread portion includes a threaded inner wall surface for engaging with a screwing shaft of a screwing piece. The pressing portion is extended from the thread portion and formed at the other end of the nut. A wall thickness of the pressing portion is smaller than a wall thickness of the thread portion. An outer wall surface of the pressing portion is aligned with an outer wall surface of the thread portion.

Abstract: A biaxial torque measuring device includes a base and two torque sensing shafts. The torque sensing shafts are disposed on the base, wherein one of the torque sensing shafts is axially parallel to a surface of the base, the other torque sensing shaft has an angle relative to the surface of the base, the angle is greater than 0 degree and smaller than 180 degrees, and each of the torque sensing shafts has a sensing portion for sensing a torque value.

Abstract: An electronic torque wrench with early-warning function includes a main body, a setting unit, a detecting unit, an operation unit, a warning unit and an early-warning program. A working head is disposed at one end of the main body for wrenching a work piece. The early-warning program is set with multiple early-warning times with different warning ranges. The value of the early-warning time is in direct proportion to the set torque value of the wrench. When the operation torque of the wrench reaches the early-warning time, the operation unit urges the warning unit to give a warning.

Abstract: An electronic screw with an electronic torque display is disclosed. The screw includes a body and a torque sensing element. The body has a threading head, a shank connected to the threading head and a recess located on the side wall of the shank. The torque sensing element is disposed in the recess and detected the torque value of the electronic screw. The torque sensing element is electrically connected to the electronic torque display, wherein the electronic torque display displays the torque value that detected from the torque sensing element.

Abstract: A biaxial torque measuring device includes a base and two torque sensing shafts. The torque sensing shafts are disposed on the base, wherein one of the torque sensing shafts is axially parallel to a surface of the base, the other torque sensing shaft has an angle relative to the surface of the base, the angle is greater than 0 degree and smaller than 180 degrees, and each of the torque sensing shafts has a sensing portion for sensing a torque value.

Abstract: An electronic torque wrench includes: a wrench main body including ahead section and a shank body, at least one recess being formed on a wall face of one side of the shank body, a top face of the shank body being inward depressed to form a platform, a rear end of the shank body being inward recessed to form a cavity for placing cells therein, a through hole being formed on the shank body in communication with the platform and the cavity; at least one torque sensor disposed in the recess; and an electronic operation/control device disposed on the platform. The outward protruding volume of the operation/control device is reduced to minify the total volume of the wrench and the platform and the recess enhance the flexion of the shank body.

Abstract: An electronic torque tool includes a main body; at least one display unit disposed on the main body for displaying torque values, and several pushbuttons disposed on the main body for a user to set values to the torque tool. The electronic torque tool has resettable torque warning values, which are discontinuous values with an interval therebetween. Thanks to the interval between the discontinuous resettable torque warning values, the torque warning value of the torque tool is lower than the required tightening force. In this case, it can be avoided that a threaded member is over-tightened.

Abstract: A torque screwdriver contains: a main body; a driving head and a torque mechanism disposed in the main body and the driving head engages with the driving head; a grip bar installed on a top end of the main body and having two ends which are a long end and a short end so that a configuration of the grip bar and the main body is in a T shape; an insertion hole defined in a top face of the grip bar, wherein a center of the insertion hole is located at the central axis of the torque mechanism. Thereby, the torque screwdriver is operated in a narrow space easily. A force rod can be inserted into the insertion hole, and a forcing position of the force rod for driving the torque screwdriver is identical to a center of the torque mechanism, thus acquiring a precise torque value.

Abstract: A bolt and nut combination includes a bolt including a shank formed with a bolt head and having a threaded portion; at least one groove formed longitudinally on the threaded portion, each groove being at a first angle with respect to an axis of the threaded portion and the first angle being not equal to 90-degree; a nut including a threaded hole configured to secure to the threaded portion; at least one trough formed longitudinally on the threaded hole, each trough being at a second angle with respect to an axis of the threaded portion and the second angle being not equal to 90-degree; and at least one elongated, resilient positioning device, each positioning device including a main portion and a positioning portion. In one embodiment, the main portion is disposes in the trough and the positioning portion is disposed in the groove.