Abstract: An impact torque generator for a hydraulic torque wrench includes a liner, a main shaft, a first drivable blade and a second drivable blade. The liner has two sealing surfaces defined at a position of 180 degree rotational symmetry. For each of the first drivable blade and the second drivable blade, a first sealing surface of the drivable blade is configured to be in contact with one of the sealing surfaces of the liner while a second sealing surface of the drivable blade slides in contact with an inner peripheral surface of the liner so as to create a seal such that a portion of an interior of the liner is divided into a high-pressure chamber and a low-pressure chamber so as to generate impact torque on the main shaft.

Abstract: A foldable position detection sensor operable by electromagnetic induction coupling is configured to alleviate the problem of the levels of electromagnetic coupling with an electronic pen locally changing at a bending portion of the sensor. The position detection sensor includes a digitizer that includes an electrode configured to couple with a position indicator by electromagnetic induction coupling. The position detection sensor includes multiple electromagnetic sheets disposed to cover a surface of the digitizer opposite to an input surface thereof for receiving input form the position indicator. The multiple electromagnetic sheets are spaced apart from one another along the surface of the digitizer at a bending location where the digitizer is bent. The electromagnetic sheets are configured such that when the digitizer is in an unfolded state the electromagnetic sheets overlap with one another at the bending location in a direction perpendicular to the input surface of the digitizer.

Abstract: An impact torque generator for hydraulic torque wrench not requiring the blade always pushed toward the outer periphery direction of the main shaft by spring, which is small, simple in structure, and durable, featuring small sliding resistance, good energy efficiency, less temperature rise of the hydraulic fluid and stable output. Two sealing surfaces and of the liner are formed at the position of 180 degree rotational symmetry, and when the sealing surfaces of the liner and one sealing surface of each driving blade coincide, the other sealing surface slides in contact with the inner peripheral surface of the cavity to seal, thereby the inside of the liner is divided into high-pressure room and low-pressure room by the driving blades so as to generate impact torque on the main shaft.

Abstract: An angle nut runner capable of accurately measuring a genuine tightening force includes an output shaft pivotally supported approximately perpendicular to the rotating shaft 1 of the drive source, a strain measuring mechanism for measuring a strain generated in the output shaft is disposed on the output shaft.

Abstract: An air driver device having a simple construction, being of a compact size, and having excellent durability. The air driver device is designed to shut off a supply of compressed air to an air motor, by means of a tightening torque control mechanism and a shut-off valve mechanism, in a case where the tightening torque reaches the set torque value. The air device is designed to tighten screw members at a prescribed tightening force, wherein the tightening torque control mechanism is composed of (i) a clutch unit, (ii) a driving piston on the back face of which is formed one clutch plate, so that clutch plates of the clutch unit may move by making rotational differential motions in a case where the tightening torque reaches the set torque value, (iii) a cylinder for storing this driving piston, (iv) a check valve for operating the shut-off valve mechanism, in linkage with the driving piston through an oil charged in the cylinder, and (v) a torque control member for regulating the set torque value.

Abstract: An allocation device includes: an allocation candidate information acquisition unit that acquires a plurality of allocation candidate positions and the number of the allocation candidate positions in the case where print target images are allocated on a printing medium; a printing number acquisition unit that acquires the number of the print target images to be printed, the number being smaller than the number of the allocation candidate positions; and an allocation unit that allocates the print target images to the plurality of allocation candidate positions so that a highest cutting efficiency is obtained in the case where the printing medium, on which the print target images to be printed have been allocated and printed to the plurality of allocation candidate positions, is cut into segments for the individual print target images.

Abstract: Provide an angle nut runner capable of accurately measuring a genuine tightening force. In the angle nut runner having an output shaft 2 pivotally supported approximately perpendicular to the rotating shaft 1 of the drive source, a strain measuring mechanism 3 for measuring a strain generated in the output shaft 2 is disposed on the output shaft 2.

Abstract: An electric screwdriver capable of reducing the reactive force produced on the occasion of a screw tightening work, etc. The electric screwdriver is designed to transmit the rotational driving force of a first motor to the bit through a bit holder, and it includes a flywheel rotatively driven by a second motor in the direction same as the direction of rotation of the bit holder, a brake generating a reactive force in the direction offsetting the reactive force transmitted from the bit to the body casing through the bit holder, by braking the flywheel, and a brake operating mechanism for operating the brake in response to the magnitude of the reactive force transmitted from the bit to the body casing through the bit holder.

Abstract: Provide an air driver device which is simple in construction and easily realizable in compact size, and has excellent durability. In an air driver device designed to shut off the supply of compressed air to the air motor 3, by means of a tightening torque control mechanism 6 and a shut-off valve mechanism 7, in case the tightening torque reached the set torque value, and tighten screw members at prescribed tightening force, the tightening torque control mechanism 6 is composed of a clutch unit 61, a driving piston 62 on the back face of which is formed one clutch plate 61a so that the clutch plates 61a, 61b of the clutch unit 61 may move by making rotational differential motions relatively in case the tightening torque reached the set torque value, a cylinder 63 for storing this driving piston 62, a check valve 64 for operating the shut-off valve mechanism 7, in linkage with the driving piston 62 through an oil charged in the cylinder 63, and a torque control member 65 for regulating the set torque value.

Abstract: An impulse torque generator for a hydraulic torque wrench is durable, compact in size and capable of stably generating a large impulse torque while eliminating a blade being inserted in the main shaft. A main shaft has a cam thereon positioned to be slidable in an axial direction without turning against the main shaft. Oil guide holes pass in an axial direction inside the cam. A cylinder receives the base end of the main shaft and the cam, and forms oil chambers to be filled with an operating fluid across the cam. Pins are inserted in the cam groove of the cam, provided projecting from the inner circumferential face of the cylinder. A drive shaft is to be connected to a drive source which rotatively drives the cylinder. A check valve shuts off the circulation of operating fluid between the oil chambers formed across the cam by selectively closing the oil guide holes formed in the cam, depending on the relative rotating angle between the cam and the cylinder.

Abstract: The objective of the present invention is to provide an impulse torque generator for a hydraulic torque wrench, which is durable, compact in size and capable of stably generating a large impulse torque, by eliminating the blade inserted in the main shaft.

Abstract: An impulse torque generator, for a hydraulic impulse torque wrench, includes a liner driven by a rotor. The liner has an inner cavity with at least two pairs of sealing surfaces around its inner peripheral surface. A main shaft extends coaxially through the liner and includes at least two projections. Also, at least two driving blades are provided for generating an impulse torque on the main shaft by abutting the projections of the main shaft.

Abstract: A pressure detecting device in a torque control wrench has a rotor to be rotated by high pressure air, an output shaft and a device for generating impulse torque with the use of oil pressure on the output shaft due to rotation of the rotor. The device has a liner rotated by the rotor rotatably mounted on the output shaft. The device forms a high pressure chamber and a low pressure chamber in the liner for the generation of impulses on the output shaft, and has a hole therein having first and second ports communicating with the high and low pressure chambers, respectively. A valve is disposed in the hole for adjustably regulating the flow of oil from the first port to the second port and for generating a shut-off signal. The valve has a valve shaft adjustably mounted in the hole, having a passage therein communicating with the high pressure chamber. The passage has an opening at an end of the valve shaft.

Abstract: An oil pressure type impulse torque generator for a wrench. Either one of both seal surfaces on the main shaft side and the liner side is made a variable type by floating in order to eliminate "burning" and wear at the seal surfaces. The seal surfaces may be formed by rollers.

Abstract: An oil pressure type pneumatic torque wrench which comprises a main shaft, a liner rotatable by a rotor with at least four seal points which are formed on the inner circumferential surface of the liner and two blades provided on the main shaft. The center of two opposing seal points on each of the shaft and liner are spaced equal distances from diametrical lines thereof so that each rotation of the liner produces one impulse.