Abstract: A coil system for a magneto inductive, flow measuring device, which comprises: a coil and core sheets led through the coil. The core sheets have equal shape and size, wherein each core sheet has a first and a second leg, which are connected together to form an L shape. At least a first core sheet and a second core sheet are so led through the coil that the first leg of the first core sheet and the first leg of the second core sheet extend parallel to one another and that the second leg of the first core sheet and the second leg of the second core sheet extend parallel to one another, wherein the second leg of the first core sheet and the second leg of the second core sheet are arranged at different ends of the coil.

Abstract: A magneto inductive flow measuring device comprising a measuring tube and coil systems arranged thereon, wherein each coil system includes a coil and a coil core so led through the coil that the coil core protrudes from the coil, wherein two coil systems are so arranged on the measuring tube on a line parallel to a longitudinal axis of the measuring tube that a pole shoe is arranged between the measuring tube and the coil cores protruding from the coil systems.

Abstract: A bolt sleeve for insulating a bolt or machine screw, wherein the bolt sleeve is so embodied that it axially shortens by a predetermined amount in the case of a force of predetermined size acting axially on it, whereupon the bolt sleeve assumes at least partially the shape of a bellows.

Abstract: Apparatus and methods for velocity scanning in, e.g., bodies of water. In one embodiment, a scanned one-dimensional transducer array Doppler sonar arrangement is used to remotely measure both vertical and horizontal profiles of a river or channel along-stream water velocities within a cross-section of the river/channel from a single side-mounted sonar.

Abstract: An ultrasonic flow-meter of the present invention includes a partition plate which partitions a passage of a target fluid into a measurement passage and a non-measurement passage, a pair of ultrasonic transducers which is disposed in the measurement passage, a measuring unit which measures a propagation time of an ultrasonic wave between the pair of ultrasonic transducers, and a calculating unit which calculates a flow rate of the target fluid. Further, the calculating unit has a computing unit which computes at least one of a flow velocity and a flow rate of the target fluid in the measurement passage based on the propagation time and an estimating unit which estimates the flow rate of the target fluid in the passage based on the flow velocity or the flow rate in the measurement passage. As a result, an ultrasonic flow-meter which highly accurately measures a target fluid by using a simple configuration can be realized.

Abstract: A device and a method are disclosed for measuring sectional forces on a single-piece structural element in respect of a sectional plane by strain gauges, wherein a first and a second strain gauge of the plurality of strain gauges are arranged on a first outer wall, and a third and a fourth strain gauge are arranged on a second outer wall, with the result that, when the structural element is loaded with a first force, the change in length of the first and third strain gauges is opposite to the change in length of the second and fourth strain gauges, wherein the first outer wall and the second outer wall have, in the region of a cavity, at least three openings, which are separated from each other by webs, and wherein the first, second, third and fourth strain gauges are arranged on the webs.

Abstract: Designs to package a magneto-elastic torque sensor in an automotive transmission for volume production applications are provided. One transmission includes an output shaft and a magnetic torque sensor. The output shaft has a magnetized region. The sensor, for detecting torque of the output shaft, is mounted on friction reduction members such as bushings supporting the output shaft. In another transmission, the sensor is alternatively mounted to a transmission case.

Abstract: An apparatus is disclosed comprising a suite of sensors for measuring instant static and dynamic pressure, speed of the water flowing past the vessel in the direction of travel of the vessel, acceleration of the vessel in the direction of motion, and position of a vessel, such as a row boat. A microprocessor receives data from the sensors and calculates power expended by the rower, paddler, or other human or non-human power source by finding the total of all forces impinging upon the vessel and passengers, thereafter multiplying by the speed of the water flowing past the vessel in the direction of travel of the vessel. In one embodiment data is stored for later analysis or for downloading to a computer or other data storage device.

Abstract: An actuation assembly adapted for driving a load, and protecting against overload conditions, includes an actuator defining a stroke, and an overload protection device including at least one elastic member having a nonlinear force-deflection characteristic defining a limit point and negative stiffness region, drivenly coupled to the actuator opposite the load, and operable to provide a secondary work output path when an overload condition exists.

Abstract: A displacement detection device includes a piezoelectric sensor. The piezoelectric sensor is provided with a piezoelectric sheet on both principal surfaces of which detection electrodes are formed. When stress is applied to the piezoelectric sensor, charge is generated, and an output voltage in accordance with this generated charge is detected in a DC voltage detector. A controller measures this output voltage at a predetermined time interval. Every time the controller measures the output voltage, the controller makes a short-circuit control of a switch, and causes the charge generated in the piezoelectric sensor to be released. The controller can thereby detect an amount of change in output voltage generated at the predetermined time interval in accordance with an amount of displacement of the piezoelectric sensor. By sequentially integrating this, the controller can accurately detect the amount of displacement of the piezoelectric sensor which changes across measurement timings.

Abstract: Various systems and techniques may be used to enhance the sensing loads on a roof surface. In some implementations, an impact-resistant surface-mounted roof sensor system may include a sensor, a protective cover, and a load transfer mechanism. The sensor may be adapted to sense a load incident thereon, and the protective cover may be configured to span at least the width of the sensor and adapted to withstand impacts from dense media and an direct incident load. The load transfer mechanism may be adapted to mechanically transfer a load applied on the protective cover to the sensor.

Abstract: Systems and methods of creating a touch sensitive surface structure comprising a piezo structure in communication with a deformable surface such that the piezo structure, or any suitable pressure sensing device, is capable of sensing pressure from a touch upon the deformable surface and communicating that pressure signal to an actuating circuit. The actuating circuit, upon receiving a suitable pressure signal, sends a piezo actuating signal to the piezo structure. The piezo structure, upon receiving the piezo actuating signal, is capable of communicating a mechanical signal to the deformable surface, sufficient for a person's finger to feel a “click” and/or haptic sensation. In one embodiment, the piezo actuating signal comprises a first slow charging portion and a second fast discharging portion, sufficient for the piezo structure to communicate the click and/or haptic sensation.

Abstract: Most mechanical tests (compression testing, tensile testing, flexure testing, shear testing) of samples in the sub-mm size scale are performed under the observation with an optical microscope or a scanning electron microscope. However, the following problems exist with prior art force sensors as e.g they cannot be used for in-plane mechanical testing (a- and b-direction) of a sample; they cannot be used for vertical testing (c-direction) of a sample. In order to overcome the before mentioned drawbacks the invention comprises the following basic working principle: A force is applied to the probe (2) at the probe tip (1) of the sensor. The force is transmitted by the sensor probe (2) to the movable body (3) of the sensor. The movable body is elastically suspended by four folded flexures (4), which transduce the force into a deflection dx. This deflection is measured by an array of capacitor electrodes, called capacitive comb drive (6).

Abstract: A method of monitoring a composition in transition from liquid to solid state includes the steps of providing an apparatus having a temperature pyrometer, a drying element, a laser displacement sensor, and an electronic balance; providing a composition in a liquid state; converting the composition to a solid state; and measuring the a process condition during said step of converting. The apparatus can include a drying element, a temperature pyrometer, a laser displacement sensor, a platform for holding a composition, an electronic balance, and a spectral birefringence measurement system.

Abstract: Laboratory spatula having stalk regions with a hollow first end and a hollow second end and at manipulating regions may be used for collecting, transporting or storing a material. A manipulating region may be configured as a shovel region, a scoop region, a whisk region, a punch region, a sieve region, a loop region, a cutting edge, a spreading region, a grinding region, a hook region, a scraper region, a tweezer region, a grasper region, or a pick region. The spatula may be lightweight and disposable, and may be any appropriate size including micro size, a regular size, or a macro size. The spatula may also have an anti-stick surface. The spatula may be calibrated, and may include calibration marks or additional features.

Abstract: A multiple layer cytometric test card includes a waste channel to receive biological waste from an area of the test card utilized for testing biological samples, a first waste storage compartment in a waste layer of the card having a top and a bottom in relation to an operating vertical orientation of the test card, and a capillary positioned along a vertical length of the first waste storage compartment, the capillary being open to the waste compartment along the vertical length of the waste compartment, wherein the waste channel is coupled to the capillary channel proximate the top of the waste storage compartment.

Abstract: A crop harvesting width of a harvester head is partitioned into a plurality of portions. At least one sensor detects a metric of a crop being harvested for each of the plurality of portions. A processing unit determines an attribute of the crop harvested for each of a plurality of portions using the detected metric.

Abstract: Amass measurement device measures the mass of an article, even when the article is being moved. A mass measurement device includes a robot hand, a robot arm, a force sensor, an acceleration sensor, and a control unit. The robot hand holds an article (Q). The robot arm moves the robot hand. The force sensor is provided between the robot hand and the robot arm and measures force acting on the article (Q) during movement. The acceleration sensor measures acceleration acting on the article (Q) during the movement. The control unit runs and controls the robot hand and the robot arm, and calculates the mass of the article (Q) on the basis of the force and acceleration acting on the article (Q) during the movement.

Abstract: An actuating apparatus includes a housing, an actuating unit, a receiver element, and a transmitter element. The actuating unit comprises a first end with a circular arc-shaped contour whose circular arc central axis is configured to act as a first pivot axis. The actuating unit is configured to be moved via an actuator and to undertake a translational main movement and a pivoting movement. The translational main movement is superimposed by the pivoting movement. The receiver element is fixedly arranged in the housing. The transmitter element comprises a magnetic field. The transmitter element is configured to be translationally movable, to be biased so as to bear against the first end of the actuating unit, and to cooperate with the receiver element.

Abstract: An actuator includes a housing assembly, an actuator shaft, an actuation member, and an anti-rotation rod. The actuator shaft is rotationally mounted in the housing assembly, is adapted to receive a drive torque, and is configured, upon receipt of the drive torque, to rotate. The actuation member is mounted on the actuator shaft, and is configured to translate in response to rotation of the actuator shaft. The anti-rotation rod is coupled to the actuator housing and extends therefrom. The anti-rotation is rod configured to at least selectively engage, and thereby prevent rotation of, the actuation member.

Abstract: An actuator arrangement comprises an epicyclic gear set 4a, 4b including a sun gear 7, at least one planet gear 9 in meshing engagement with the sun gear 7, and a ring gear 3 in meshing engagement with the planet gear 9, the planet gear 9 being carried by a rotatable support 5, wherein one of the sun gear 7 and the support 5 is arranged to be driven by a motor 2 and the other of the sun gear 7 and the support 5 is arranged to drive an actuator 18, and a clutch arrangement 6 operable to resist rotation of the ring gear 3.

Abstract: It is an object of the present invention to provide a gap expanding method of a ball screw for preventing an increase in torque relative to an electric motor due to a protruding bulge caused by generation of a scar on the traveling side of the screw shaft of the ball screw, and to provide a control rod drive mechanism incorporating the gap expanded ball screw. In a ball screw disposed in a control rod drive mechanism, the ball screw has a screw shaft and a ball nut engaged with the screw shaft via travelling balls, and the balls are each configured to have a diameter smaller than that of the existing ball, thereby expanding a gap between a ball traveling side of the screw shaft and the ball and a gap between the ball and a ball traveling side of the ball nut.

Abstract: The invention concerns a spindle drive for the motorized adjustment of an adjusting element of a vehicle, comprising a drive motor with a motor shaft, a speed reduction gear mechanism, and a feed gear mechanism, the speed reduction gear mechanism having a planetary gear mechanism and the feed gear mechanism being designed as a spindle/spindle nut gear mechanism, the planetary gear mechanism having a rotatable sun gear and coaxially in relation thereto a rotatable planet-gear carrier and a fixed or fixable ring gear, and the planet-gear carrier carrying at least one rotatable planet gear, which is in axially parallel engagement with the sun gear on the one hand and the ring gear on the other hand, the drive motor, the speed reduction gear mechanism and the feed gear mechanism being accommodated one behind the other in a substantially elongate drive housing and aligned with a common longitudinal drive axis.

Abstract: A thumb actuator for a no-link type thumb assembly includes a cylinder body configured to be pivotally connected to a mounting bracket. The thumb actuator further includes a piston assembly having a piston and a piston rod configured to be pivotally connected to a thumb. Further, a ratio of a retracted length to a stroke length of the thumb actuator is in a range of about 1.9 to 2.2.

Abstract: A method of operating a transmission which is shifted to various operating conditions by engaging shifting elements. At least one of the shifting elements is an interlocking shifting element which has to be engaged to obtain at least one defined operating condition of the transmission during which force flows between an input and an output shaft. When a command is received to engage the interlocking shifting element, a rotational speed of the transmission input shaft is displaced in the direction toward a synchronous rotational speed produced in the engaged operating condition of the interlocking shifting element at least as a function of the rotational speed of the transmission output shaft. When the variation of the rotational speed of the transmission input shaft crosses a predefined rotational speed threshold, the interlocking shifting element is actuated in its engaging direction.

Abstract: A method of operating a transmission device having gears that are engaged by actuating shifting elements. At least one of the shifting elements is an interlocking shifting element which has to be engaged in at least one gear to transmit drive between an input and an output shaft. When a command is received to engage the interlocking shifting element, a rotational speed of the input shaft is displaced in the direction toward a synchronous rotation speed produced in the engaged operating condition of the interlocking shifting element at least as a function of the rotational speed of the output shaft. The engagement process of the interlocking shifting element from its disengaged operating condition is discontinued if, before reaching the synchronous rotational speed, the variation of the rotational speed of the input shaft crosses a predefined rotational speed threshold without initiating engagement of the interlocking shifting element.

Abstract: A method of operating a transmission which is shifted to various operating conditions by engaging shifting elements. At least one of the shifting elements is an interlocking shifting element which has to be engaged to obtain at least one defined operating condition of the transmission during which power flows between an input and an output shaft. When a command is received to engage the interlocking shifting element, a rotational speed of the transmission input shaft is displaced in the direction toward a synchronous rotational speed produced in the engaged operating condition of the interlocking shifting element at least as a function of the rotational speed of the transmission output shaft. When the variation of the rotational speed of the transmission input shaft crosses a predefined rotational speed threshold, the interlocking shifting element is actuated in its engaging direction.

Abstract: The invention relates to an actuating device for actuating at least one shifting element (3, 4, 5) shiftable through a shifting device (6, 7, 8), whereas the shifting device (6, 7, 8) features a pressure space (6a, 7a, 8a) with a supply (26) for a pressurized medium, along with a shut-off valve (17). It is proposed that the shut-off valve (17) is connected in an electrically controllable and torque-proof manner to at least one shifting element (3, 4, 5), and that the electrical energy for the actuation of the shut-off valve (17) is able to be supplied without contact.

Abstract: A transmission system includes a first gear which has an outer toothing; a plurality of pinions which mesh with the outer toothing of the first gear, each pinion being connected to an electric machine which is designed as a motor or a generator; a second gear which is coaxially connected to the first gear and which has an outer toothing; a plurality of third gears which mesh with the second gear and which have an outer toothing, each of the third gears being coaxially connected to a fourth gear which has an outer toothing; and a fifth gear which meshes with the fourth gears, which is connected to a drive or output shaft, and which has an outer toothing, with the first gear and the drive or output shaft being coaxially arranged.

Abstract: A drive force transmission device is provided with a motor shaft, a transmission input shaft, a drive side sprocket, a resolver rotor and a cylindrical resolver retainer. The motor shaft is configured to be connected to a motor rotor of a motor. The driving force transmission shaft is coaxially connected to the motor shaft. The oil pump sprocket is provided on the driving force transmission shaft for rotating an oil pump. The resolver rotor is disposed on the motor shaft adjacent the oil pump sprocket for detecting a rotational position of the motor. The cylindrical resolver retainer is coaxially disposed on the motor shaft to fix the resolver rotor to the motor shaft. The resolver retainer includes a stopper that forms an axial positioning surface for the resolver rotor by contacting an end portion of the motor shaft, and an axial position limiting surface of the oil pump sprocket.

Abstract: The invention relates to a robot for handling loads, comprising an end effector, three actuators, each with a single degree of freedom, three arms, each of them pivotably connected to an actuator and on pivotably connected to the end effector, a frame carrying the actuators; and a control unit connected to the actuators. The invention also relates to an assembly of plural of these robots.

Abstract: An apparatus for controlling an end-effector assembly is provided. The apparatus includes a elongated element configured to engage the end-effector assembly and a drive assembly. A first motion transfer mechanism is disposed at an end of the elongated element. The first motion transfer mechanism is configured to transfer a rotational motion of the elongated element to a motion of the end-effector assembly. A second motion transfer mechanism is disposed at the second end of the elongated element. The second motion transfer mechanism is configured to transfer a motion of the drive assembly to the rotational motion of the elongated element.

Abstract: Disclosed herein is a steering column for a vehicle. In a steering column (10) including an outer tube (100) accommodating a steering shaft (P), an inner tube (200) retracted into the outer tube (100), a main bracket (300) installed to the outer tube (100) and fixed to a vehicle body, a telescopic bracket (400) integrally fixed to the outer tube (100) and formed with a pair of slots for telescoping (410), and a position fixing bolt (600) installed through the slots for telescoping (410), wherein the telescopic bracket (400) is further formed with a slot for energy absorption (420) extending from at least one of the pair of slots for telescoping (410) and having a height (h) smaller than a diameter (D) of the position fixing bolt (600), thereby enabling impact energy to be absorbed by means of friction with the position fixing bolt during a vehicle impact.

Abstract: In one aspect of the invention, an intermediate shaft for a steering column assembly of a vehicle is provided. The intermediate shaft includes a shaft element, a universal joint coupling including an inner yoke coupled to the shaft element and an outer yoke coupled to the inner yoke, and at least one of a bearing and a lock sleeve coupled to the outer yoke.

Abstract: A brake adapter for a bicycle brake is provided with a bent, rigid tube including a plurality of transverse holes communicating with interior of the bent, rigid tube; and a plurality of rollers rotatably disposed in the transverse holes respectively. Both ends of each transverse hole are smaller than both ends of each roller respectively.

Abstract: A cable connection device of a bicycle is provided with an outer barrel, an inner connecting member, and a tube, wherein an outer thread is arranged at one end of the tube, and a cone portion is arranged inside the end of the tube having the outer thread and tapered inwardly; an inner thread arranged at one end of the outer barrel is screwed with the outer thread of the tube, and a flange is arranged inside the end of the outer barrel away from the inner thread; and two flexible latches of the inner connecting member are disposed inside the cone portion, and an outer convex ring arranged between two ends of the inner connecting member is against the flange adjacent to the inner thread. The flexible latches are compressed by the cone portion to fasten one end of a cable passed through the tube.

Abstract: An air pump has a frame, a pedal pivotally mounted on the frame, and a pedal securing device rotatably mounted on the frame to selectively fix the pedal on the frame. The pedal securing device has two knobs and an eccentric shaft. The knobs respectively have a pivot portion and an operational portion mounted on an outer surface of the pivot portion. The eccentric shaft is connected with the knobs and has an eccentric part driven by the operational portion of one of the knobs. A user can turn one of the knobs by foot to drive the eccentric shaft to rotate, and then the eccentric part can selectively engage or disengage a hook of the pedal. Accordingly, the pedal securing device is easy to operate by foot and prevents a hand of the user from being contaminated.

Abstract: A dynamic damper for restricting an axial displacement of an inertial mass which can be manufactured without requiring a complicated structure. The dynamic damper is comprised of: a damper housing formed in a rotary member subjected to torsional vibrations; a rolling surface formed on an inner wall of the damper housing; and an inertial mass held in the damper housing to damp the torsional vibrations by a circumferential oscillating motion thereof on the rolling surface resulting from the torsional vibration. The rolling surface includes a receiving face formed in a manner such that reaction forces individually counteracts each load exerted thereto by the inertial mass symmetrically across a through-thickness central plane of the inertial mass perpendicular to an axial direction of the rotary member. Therefore, components of each reaction force in the axial direction will act equally in opposite directions.

Abstract: A kit for raising and increasing wheel torque of an off road four wheel vehicle comprising four portal boxes, each portal box being associated with an individual one of the vehicle wheels, the portal boxes enclosing identical gear sets and associated bearings, each portal box being adapted to receive the output of an axle constant velocity joint and having an output shaft projecting therefrom, a set of four metal backing plates for joining the portal boxes to the suspension arms of the vehicle, the backing plates being substantially identical, the backing plates each having inwardly extending mounting brackets for attaching to upper and lower suspension arm parts.

Abstract: A powder mixture of the present invention is characterized in that it comprises: an iron powder or an iron-based alloy powder, wherein a graphite powder is adhered to a surface of the iron powder or the iron-based alloy powder by a binding agent containing a polyolefin wax; and a negatively-charged powder to be mixed with the iron powder or the iron-based alloy powder, and consisting of an iron powder and/or an iron-based alloy powder treated for negatively charging. This enables keeping the good adhering property of a graphite powder in a mixed powder and high flowability as a mixture of the raw material powder.

Abstract: A process for using an aqueous oxidizing solution includes at least steps of formulating the aqueous oxidizing solution by addition of ingredients to water; a metal solubilization step of oxidizing and thereby rendering soluble a desired at least one metal from a ground amount of ore in suspension; collecting a pregnant liquor from the suspension; and selectively removing at least a portion of the at least one metal from the liquor while at a pH of less than 3, such that any remaining liquid is a recyclable liquor. The aqueous oxidizing solution has a pH of less than 0.7 primarily as a result of the presence of at least one strong acid and persulphate anions. The aqueous oxidizing solution contains anions selected from a group consisting of chloride, bromide, iodide and nitrate.

Abstract: A method of processing a metallic material includes introducing an electrically conductive metallic material comprising at least one of a metal and a metallic alloy into a furnace chamber maintained at a low pressure relative to atmospheric pressure. A first electron field having a first area of coverage is generated using at least a first ion plasma electron emitter, and the material within the furnace chamber is subjected to the first electron field to heat the material to a temperature above a melting temperature of the material. A second electron field having a second area of coverage smaller than the first area of coverage is generated using a second ion plasma electron emitter. At least one of any solid condensate within the furnace chamber, any solidified portions of the electrically conductive metallic material, and regions of a solidifying ingot to the second electron field, is subjected to the second electron field, using a steering system.

Abstract: Ironmaking method and installation with recirculation of exhaust gas as a reduction gas and whereby part of the exhaust gas is purged upstream and/or downstream of a CO/CO2 separation unit, said purged exhaust gas being subjected to a water gas shift reaction for H2 generation.

Abstract: A vibrating chain saw sharpener for sharpening a saw chain that includes a cylindrical body portion; a ring portion connected to and encompassing an intermediate portion of the cylindrical body portion; a flange portion extending away from a bottom portion of the cylindrical body portion; and a hand-held power tool removably connected to an upper portion of the cylindrical body portion. Vibrations transmitted from the hand-held power tool to the ring portion are conveyed to the tooth of the chain saw, wherein the tooth is sharpened by the vibrations conveyed thereto.

Abstract: Apparatus for supplying a fluid to a device for tightening or loosening fasteners including a first fluid-transmitting element (130) having a first axis connectable with a housing of the device; a second fluid-transmitting element (140) rotatably connectable with the first element (130) about a second axis substantially perpendicular to the first axis; a third fluid-transmitting element (150) rotatably connectable with the second element (140) about a third axis substantially perpendicular to the second axis and connectable with a fuid-transmitting line; and first and second fluid conduits that transfer fluid to and from the device and the fluid-transmitting line through the first, second and third elements. The first element is rotatable 360° about the first axis; the second element is rotatable 360° about the second axis; and the third element is rotatable less than 360° about the third axis.

Abstract: A drywall screwdriver includes a housing, an element delimiting the depth of engagement, a drive unit, an outlet spindle, and a planetary gear that comprises at least one hollow wheel. The drywall screwdriver further comprises at least one support element that is different from a housing element and that at least partially surrounds the ring gear of the planetary gear.

Abstract: A wrench device includes a first handle and a second handle. The first handle has a pivotal connecting segment and a driving head defined at two ends thereof respectively. The pivotal connecting segment has a groove defined around an outer periphery thereof. The second handle has a pivotal connecting recess and a driving part defined at two ends thereof respectively. The pivotal connecting segment of the first handle is pivotally inserted into the pivotal connecting recess of the second handle. The second handle has a side screwed hole opened on a surface therethrough. The side screwed hole communicates with the pivotal connecting recess and corresponds to the groove. A position member is screwed into the side screwed hole. Therefore, when either the driving head or the driving part is broken, the first handle and the second handle can be separated by unscrewing the position member from the side screwed hole.

Abstract: A wrench device includes a handle, a driving member and a driving sleeve, the handle having a fork portion defined at one end thereof, the fork portion being pivotally assembled with the driving member, the handle having a screwing portion defined at another end thereof, a screwing hole being opened at one end of the screwing portion, an opening of the screwing hole being opposite to the fork portion, the driving sleeve sleeving on an outer periphery of the screwing portion. Under this arrangement, a user applies a sleeving member to sleeve on the driving member so as to screw or unscrew a bolt; in addition, the user also can operate the screwing portion of the wrench device to screw or unscrew the bolt.

Abstract: A bit driving tool includes a driving rod, a telescopic rod and a fixing seat. The telescopic rod is fitted in the driving rod. The fixing seat is secured to a front end of the telescopic rod. The driving rod is to fix a screw bit. The fixing seat is a magnetic fixing seat. The structure of the present invention is compact and stable, and the magnetic fixing seat can be extended or retracted easily.

Abstract: A wrench with quickly angularly adjustable handle includes ahead section and a handle. The head section and the handle are pivotally connected with each other via a first and a second pivoted ends, whereby the handle can be up and down swung relative to the head section. The first and second pivoted ends respectively have a first and a second end faces facing each other. The first end face is formed with an upper and a lower contact sections. The second end face is formed with an upper and a lower abutment sections. The lower abutment section abuts against the lower contact section as a lower dead end of angular displacement of the handle. The upper abutment section abuts against the upper contact section as an upper dead end of angular displacement of the handle.