Abstract: A replaceable and rotatable tool with a function of measuring twisting forces comprises a tool body; a driving portion formed at one end of the tool body; the driving portion including a pivotal unit and an engaging unit; one end of the pivotal unit being secured to the tool body and another end thereof being pivotally installed with one end of the engaging unit so that the engaging unit being rotatable along the pivotal shaft; another end of the engaging unit being formed with an opening for movably installing various driving head. The pivotal unit is formed with at least one inclined surface for controlling the slope of the engaging unit with respect to the axis of the handle. The angle of the engaging unit with respect to the axis of the handle is retained within a range of 15 degrees in each of two rotating directions.

Abstract: An anti-rolling socket. One end of the socket is formed with a fitting hole for fitting on a threaded member. An annular rib with a certain angle of arch is formed on a circumference of the socket to form a maximum outer diameter of the socket. A distance from a first end of the socket to the rib is longer than a distance from a second end of the socket to the rib. In the case that the annular rib has a 360 degree arch, when the socket is placed on a plane, the annular rib and the first end of the socket contact with the plane. When the socket rolls, the socket rolls about a circle. In the case that the annular rib has an arch that the angle of which is less than 360 degrees, when the socket rolls, the socket can only roll within a range less than one circle.

Abstract: A ratchet tool comprises a head having a hole and a ratchet mechanism received in an inner periphery of the hole, an engaging member rotatably engaged with the hole and the ratchet mechanism, and a first ring connected to a side of the engaging member and located above a surface of the head; a periphery of the first ring exceeding a periphery of the head; the first ring including a flange extending inwards from an inner periphery of the first ring; a textured surface is formed on an outer surface of the first ring; and a second ring connected to another side of the engaging member. The ring and the engaging member are formed as a one-piece member.

Abstract: An electronic torsional tool includes a main body, and a strain gauge mounted in the main body. The main body is provided with an opening to enhance flexibility of the main body and to increase deformation of the strain gauge. The opening is extended through the handle portion and the drive portion.of the main body, thereby enhancing deformation of the main body, and thereby increasing deformation (or distortion) of the strain gauge, so as to detect and obtain the torsion values exactly.

Abstract: A handle tool with high sensitive electronic strain measurement comprises a driving portion for driving an object; a handle connected to the driving portion; the handle having an integrating element; a first groove and a second groove being formed at two sides of the handle and are near the driving portion; a length of the first groove being greater than that of the second groove; a strain gauge being embedded in the first groove; the strain gauge being electrically connected to the integrating element; the strain gauge being deformable with the deformation of handle of the tool body; the twisting force applied to the handle being calculated by the integrating element. A display and at least one adjusting button are installed on the integrating element; the display serves for displaying the twisting force calculated on by the integrating element and the adjusting button serves to change the display unit or calibration or reset.

Abstract: A sleeve device comprises a sleeve portion, the sleeve portion having a first opening; a first sleeve extending from an upper side of the sleeve portion; the sleeve portion having four sides; two opposite sides of the four sides being suitable for one kind of spanner and the other two opposite sides being suitable for another kind of spanner; a second sleeve; the sleeve portion having four sides; two opposite sides of the four sides being suitable for one kind of spanner and the other two opposite sides being suitable for another kind of spanner; the first sleeve and the second sleeve being formed as a stepped structure; the second sleeve having a second opening. The second sleeve has a shape similar to that of the first sleeve and the size of the second sleeve is smaller than that of the first sleeve.

Abstract: The direction control device comprises a spanner body having a receiving chamber at a head portion thereof; a lateral side of the receiving chamber formed with a braking groove; the spanner body having a direction control groove communicated to the braking groove; a ratchet wheel being received in the receiving chamber and a brake block being received in the braking groove; the brake block being engaged to the ratchet wheel; a direction control unit received in the direction control groove; the direction control unit including a direction control block, a control sheet, and an elastic ejecting device; one end of the direction control block being formed with a control portion; and an upper end of the brake block capable of engaging with a ratchet wheel; a lower end of the brake block having an inserting hole and the brake block being formed with a notch near the inserting hole.

Abstract: A hand tool with twisting force measuring functions comprises a driving portion having a driving head for screwing a screwing elements; a handle connected to the driving portion; the handle including a first lateral side and a second lateral side adjacent to the first lateral side; at least strain gauge installed in the first lateral side; at least one strain gauge installed in the second lateral side; an integrating element installed on the handle for calculating twisting forces of the tool body by measuring data from the strain gauges of the first and second lateral sides. The strain gauge in the first lateral side and second lateral side are connected with other circuit element as a Wheaston Bridge for measuring twisting force of the hand tool. The Wheaston bridge of the first lateral side is connected across one element of the Wheaston bridge of the second lateral side.

Abstract: The direction control device comprises a spanner body having a receiving chamber at a head portion thereof; a lateral side of the receiving chamber formed with a braking groove; the spanner body having a direction control groove communicated to the braking groove; a ratchet wheel being received in the receiving chamber and a brake block being received in the braking groove; the brake block being engaged to the ratchet wheel; a direction control unit received in the direction control groove; the direction control unit including a direction control block, a control sheet, and an elastic ejecting device; one end of the direction control block being formed with a control portion; and an upper end of the brake block capable of engaging with a ratchet wheel; a lower end of the brake block having an inserting hole and the brake block being formed with a notch near the inserting hole.

Abstract: A bendable cutting device comprises a pair of holding portions; a pair of cutting portions; the two cutting portions being pivotally installed to one another; an inner side of each cutting portion having a knife portion; each cutting portion being pivotally installed to one end of a respective one of the holding portions. By moving the two cutting portions closer, the two cutting portions serve to cut one object clamped between the two cutting portions. Each cutting portion has a pivotal recess and each holding portion has a pivotal block; a retainer serves to pivotally install the pivotal block to the pivotal recess so that the holding portion is assembled to the cutting portion. One inner side of the pivotal recess has at least one holes and the pivotal block has a positioning unit corresponding to the holes. The positioning unit is formed by a spring and a steel ball.

Abstract: A screwdriver structure includes a handle having a projecting section at rear end, a circumference of the projecting section being formed with a predetermined number of holes extending into the interior of the projecting section; a stem disposed at front end of the handle; and a rotary cap having a cavity inward extending from a bottom end of the rotary cap, an outer circumference of the rotary cap being formed with several through holes communicating with the cavity. The rotary cap is rotatably disposed on the projecting section which is accommodated in the cavity with the through holes. When operating the screwdriver, the palm of a user's hand can attach to the rotary cap. When turning the rotary cap, at least one through holes is align with at least one holes. A rod can be inserted through the hole and the through hole to elongate the application force arm.

Abstract: A wire cutter includes two jaws pivotably connected with each other and each jaw has a curve cutting edge which includes a cutting portion which includes a first section, a second section and a third section which is located between the first and second sections. Each of the first section and the second section has a first side surface and a second side surface, and a first angle of 60 degrees is defined between the first side surface and the second side surface. The third section has a third side surface and a fourth side surface, a second angle of 35 degrees is defined between the third side surface and the fourth side surface. The wires are pushed toward the second sections and cut by the second sections.

Abstract: A torque applying tool includes a handle and a function end which includes two jaws. A first resistive strain gauge and a second resistive strain gauge are respectively connected to two respective insides of the two jaws. A third resistive strain gauge is connected to the handle and electronically connected to the first and second resistive strain gauges. A display unit is connected to the handle and electronically connected to the third resistive strain gauge. The display unit displays the value of torque that is a result of calculation of information from the resistive strain gauges.

Abstract: A low-cost high precision twisting measuring device comprising a tool body; the tool body comprises a handle having a display; at least one end of the handle having a driving portion; each connection between the handle and each driving portion having a piezoelectric ceramic sensor; the piezoelectric ceramic sensor being connected to the display through a conductor; the piezoelectric ceramic sensor serving to convert mechanical power due to operation of the spanner into electric power with a form of voltage signals; the voltage signal being transferred to the display through the conductor.

Abstract: A bendable and retainable spanner comprises a driving head having a driving portion capable of driving a screw; one end of the driving head having a pivotal block; a holding portion having a pivotal structure at one end thereof; a pivotal unit; two ends of the pivotal unit having pivotal grooves for receiving and retaining the pivotal block of the driving portion and the pivotal device of the holding portion by using pivotal shafts so as to pivotally install the pivotal block and the pivotal device; a center portion of the pivotal unit being formed with a receiving groove for receiving an adjusting wheel; an upper end a lower end of the adjusting wheel having respective screw holes; each screw hole being received with a respective buckle.