Abstract: To improve an offset accuracy in a particle number counting apparatus (100) condensing a working liquid with sample particles, the apparatus including: a porous member (22) in which a flow path (23) is passed through to form an inlet (23a) at a lower side and an outlet (23b) at an upper side thereof so that the working liquid is supplied to a predetermined section of the porous member so as to be impregnated into the entire part of the porous member; and a housing (21) having an accommodating space for accommodating the porous member (22), wherein a gap (S) is formed between an outer peripheral surface (22a) of the porous member (22) and an inner peripheral surface (21b) of the accommodating space of the housing (21) at least in an upper side than the predetermined section to be supplied with the working liquid.

Abstract: Active air-fuel ratio control is performed to alternately control an air-fuel ratio in an area located upstream of a catalyst between a lean side and a rich side. The amount of oxygen absorbed and released by the catalyst during lean control and rich control of the air-fuel ratio is measured. When an output from the post-catalyst sensor reaches a predetermined threshold, switching is carried out between the lean control and the rich control, and the measurement of the amount of oxygen is ended. The threshold is set to be reached before the output from the post-catalyst sensor reaches a predetermined reference value. Whether the catalyst is normal or abnormal is determined based on the amount of oxygen measured until the output from the post-catalyst sensor reaches the threshold and behavior of the output from the post-catalyst sensor observed after the output from the post-catalyst sensor reaches the threshold.

Abstract: A method for detecting whether an injector with a valve controlled by a PWM signal of an SCR system is clogged, the SCR system including a rotary positive-displacement pump driven by a motor and pressure of which is controlled by a controller that continuously measures rotational speed of the motor and pressure at an outlet of the pump. During operation of the SCR system at a given pressure: the associated average rotational speed is measured; the speed is held at the measured value; a curve of a change in pressure is compared to reference curves stored in a memory and a condition of the injector, for example whether the injector is clogged or not, is deduced therefrom.

Abstract: A tire state detection device capable of detecting a tire state with high accuracy. This tire state detection device (100) is a device for detecting the tire state of a pneumatic tire (200) affixed to a wheel and comprises a vibration input unit (110) for inputting predetermined vibration to the tire (200), a frequency information acquisition unit (120) for acquiring frequency information relating to the tire (200) when the predetermined vibration is inputted, and a tire state estimation unit (130) for extracting the resonance frequency and anti-resonance frequency of the tire (200) from the acquired frequency information and calculating, from the extracted resonance frequency and anti-resonance frequency of the tire (200), an outer moment of inertia and a spring constant when the tire (200) is modeled using the outer moment of inertia, an inner moment of inertia, and the spring constant of elastic force acting therebetween.

Abstract: A wind tunnel device defines a cyclical tunnel to receive continuous airflow. Airflow is delivered through the tunnel to a testing region that includes a first portion carrying an arm including a spray tip configured to spray particulates in the testing region at an angle, and a second portion including an enlarged cutout region configured to receive the angled sprayed particulates. As airflow carries the angled spray particulates into the second portion, the enlarged cutout region enables the spray particulates to pass through and exit the second portion of the testing region. Analysis in the second region may be conducted through transparent walls free of openings to minimize exposure of the spray particulates to the exterior of the device. A scrubber is adapted to extract spray mist from the airflow as the airflow exits the testing region and is re-circulated through the cyclical tunnel.

Abstract: The present invention regards nano surfaces and particularly a gradient based nano surface. According to embodiments of the invention a surface bound gradient is created by distributed nanoparticles along a plane surface. This procedure greatly reduces the number of prepared surfaces needed, as well as the methodological error of analysis of adsorption and adhesion phenomena.

Abstract: A method of modelling a hydrocarbon-containing reservoir which is representative of such reservoir in at least one physical characteristic such as reservoir porosity or permeability. Data, such as reservoir porosity is firstly determined. Such data is then transformed into printing instructions for a 3D printer. The 3D printer is used to print a reduced-scale model which is representative of the reservoir in respect of the at least one physical characteristic, such as reservoir porosity. A method of comparative testing of different hydrocarbon recovery techniques on a single hydrocarbon-containing reservoir is also disclosed and claimed.

Abstract: A transducer for determining the level of liquid within a container includes a mounting head adapted for connection to the container and a sensor assembly adapted to extend into the container from the mounting head. The sensor assembly includes a housing having an upper portion connected to the mounting head and a lower portion that extends from the upper portion. The lower portion has a hollow interior that is isolated from liquid within the container. A plurality of sensor elements are located within the hollow interior. A float rod is pivotally connected to the housing and a float is connected to a distal end of the float rod to thereby cause pivoting movement of the float rod in response to a change in liquid level within the container. An actuator is located outside of the housing and is operatively associated with the float rod for pivotal movement therewith.

Abstract: A transducer for determining the level of liquid within a container includes a mounting head adapted for connection to the container and a sensor assembly adapted to extend into the container. A housing of the sensor assembly has a hollow interior that is isolated from liquid within the container. A plurality of sensor elements are located within the interior. A float rod is pivotally connected to the housing and a float is connected to a distal end of the float rod. An actuator located outside the housing is operatively associated with the float rod for pivotal movement therewith. The actuator is operative to change an electrical state of at least one of the sensor elements to thereby indicate a level condition of the liquid within the container. A snap-fit assembly of the mounting head and sensor assembly is also disclosed.

Abstract: A sensor for measuring a density of a fluid is provided. The sensor (200) includes a flow tube (104) for receiving the fluid and a vibration driver (102) coupled to the flow tube, the vibration driver configured to drive the flow tube to vibrate. The sensor also includes a vibration detector (106) coupled to the flow tube, the vibration detector detecting characteristics related to the vibrating flow tube, and a distributed temperature sensor (202) coupled to the flow tube, the distributed temperature sensor measuring a temperature of the flow tube as the flow tube vibrates. The sensor further includes measurement circuitry (110) coupled to the vibration detector and the distributed temperature sensor, the measurement circuitry determining a density of the fluid from the detected characteristics related to the vibrating flow tube and the measured temperature of the flow tube.

Abstract: A multi-axis gyroscope includes a microelectromechanical structure configured to rotate with respective angular velocities about respective reference axes, and including detection elements, which are sensitive in respective detection directions and generate respective detection quantities as a function of projections of the angular velocities in the detection directions. The gyroscope including a reading circuit that generates electrical output signals, each correlated to a respective one of the angular velocities, as a function of the detection quantities. The reading circuit includes a combination stage that combines electrically with respect to one another electrical quantities correlated to detection quantities generated by detection elements sensitive to detection directions different from one another, so as to take into account a non-zero angle of inclination of the detection directions with respect to the reference axes.

Abstract: A micro-electromechanical systems (MEMS) transducer (400) is adapted to use lateral axis vibration of the drive mass (210) to generate non-planar oscillations of a coupling mass (220) in response to Coriolis forces created from in-plane rotational acceleration, which in turn generate non-planar motions of a symmetric teeter-totter sense mass (230) which are detected as a capacitive difference signal by capacitive electrodes (403, 404) formed on the substrate (402) below the sense mass (230).

Abstract: A gyroscope comprising: a support structure; a drive mass springedly coupled to the support structure such that movement of the drive mass with respect to the support structure is substantially restricted to movement in a first direction; a driver configured to cause the drive mass to oscillate with respect to the support structure in the first direction; a sense mass springedly coupled to the drive mass such that movement of the sense mass with respect to the drive mass is substantially restricted to movement in a second direction, which is orthogonal to the first direction; and a digital trigger comprising a proximity switch coupled between the drive mass and the sense mass, wherein the switch is configured to switch from an open state to a closed state each time the sense mass is in a reference position with respect to the drive mass.

Abstract: An integrated microelectromechanical structure is provided with: a die, having a substrate and a frame, defining inside it a detection region and having a first side extending along a first axis; a driving mass, anchored to the substrate, set in the detection region, and designed to be rotated in a plane with a movement of actuation about a vertical axis; and a first pair and a second pair of first sensing masses, suspended inside the driving mass via elastic supporting elements so as to be fixed with respect thereto in the movement of actuation and so as to perform a detection movement of rotation out of the plane in response to a first angular velocity; wherein the first sensing masses of the first pair and the first sensing masses of the second pair are aligned in respective directions, having non-zero inclinations of opposite sign with respect to the first axis.

Abstract: Based on a peak level of a waveform in a predetermined period after the input of the waveform started and a value indicative of the degree of change in the waveform in the predetermined period, a judging device determines whether the waveform is caused by a strike. Thus, the peak level and a value indicative of the degree of change in the waveform are considered to determine whether the waveform is caused by a strike. A waveform with a small peak level caused by a weak strike is not erroneously detected as noise, while accurate detection of strikes can be obtained.

Abstract: A vibration detector (100) is disclosed herein. In a first embodiment, the vibration detector (100) comprises a support member (300, 302) arranged to vibrate, and a sensor (207) arranged to detect a vibration frequency of the support member (300, 302). The vibration frequency to be detected is dependent on the support member's mechanical structure, in which the support member's mechanical structure is mechanically reconfigurable to vary the vibration frequency to be detected by the sensor (207).

Abstract: The invention relates to systems and methods for conducting an ultrasonic, nondestructive evaluation and inspection of a pipe using Lamb-type wave transducers to detect the presence of defects, flaws, discontinuities and the like. The transducers are positioned within the interior space of the pipe. Two transducers are positioned facing each other such that the ultrasonic beam emitted from each of the transducers is directed toward the other transducer and the portion of pipe to be inspected. The coverage of the transducers is verified and the results are processed using a combination of a cross correlation filter and a signal processing tool.

Abstract: An apparatus internally inspects a workpiece having a hollow cylindrical hole. The apparatus contains an ultrasound transducer configuration having a plurality of ultrasound transducer elements, which are arranged in at least one row, one next to the other, in an elastically deformable carrier which has the form of a segment of a hollow cylinder and has a plurality of sliding pimples which extend in the longitudinal direction of the carrier and project with a protrusion in the radial direction beyond the transmitting and/or receiving surfaces of the ultrasound transducer elements.

Abstract: A pressure measuring device has tubing with an inline “pillow” portion that is more flexible than the tubing portion. The pillow portion may be created by heating a portion of a length of medical tubing and forcing air into the heated portion to expand, and thin, its walls. The tubing and pillow portion may be used in a negatively pressurized portion of a blood circuit such as an arterial return line. An assembly of interleaved support members adhesively bonded to the pillow portion holds the pillow portion in an expanded state even under negative pressure. Further, when the pillow portion tries to collapse, the interleaved support members compress a strain gauge to provide a pressure signal corresponding to the negative pressure exerted by the fluid therewithin.

Abstract: A flow meter is disclosed having a meter body that is enveloped by a shroud having a compliant band disposed at least partially about the meter body. The shroud protects transducers and transducer cables. The shroud forms a chamber between the shroud and meter body, and includes a releasable portion to allow access into the chamber.

Abstract: A conduit P is clamped within a clamping hole 16 formed by min body 1, left and right side plates 2, 4 and top plate 3. The clamping hole is maintained by a locking mechanism 5, 5a and 11, and the conduit is deformed to have a substantially square cross section. Ultrasonic signal transmission and reception elements 13a and 13b are arranged in the main body such that an ultrasonic beam emitted from one of the elements is received by the other element after the beam is reflected by the top plate.

Abstract: An ultrasonic flow sensor comprises a flow cell body with an inlet on one side and an outlet on the other side through which the liquid or gaseous media flows; an inner flow conduit with rough surface which not only decreases the flow transition point from turbulence regime to laminar regime but also suppresses the parasitic multi-mode ultrasonic waves; one pair of electro-ultrasonic transducers for transmitting and receiving ultrasound signals; one pair of ultrasonic wave reflecting mirrors for guiding ultrasonic waves from one transducer to the other; and two reflecting mirror support fixtures which set the position and orientation of the ultrasonic wave reflecting mirrors in such a way that their disturbance to the flow inside the inner flow conduit is minimized while the ultrasonic signal strength is maintained.

Abstract: A force-sensing device for measuring a traction- and/or pressure force load in a structure, for example, in a container-locking bolt is provided. The force-sensing device is constructed shaped like a rod and a sensor section detects expansions and/or compressions of the structure.

Abstract: The present invention relates to a transducer and a method for manufacturing same, and more particularly, to a transducer and to a method for manufacturing same, in which a first liquid and a second liquid are supplied such that, at the boundary therebetween, a deformation-generating part, including a perforated structure having one or more holes therein, is formed, and the effect of external pressure is negated by the action between the liquids.

Abstract: Sample bags having at least one multilayer wall are described. The multilayer wall may include an inner layer and a sealing layer. The sealing layer is outside of the inner layer and forms a seam around at least a portion of the sample bag. In certain embodiments, the inner layer comprises a patterned periphery. The patterned periphery extends into the seam to provide the inner layer with a mechanical stability. The inner layer may be a thin metal foil or a plastic film and the sealing layer may include a sealing surface of a thermoplastic, wherein the thermoplastic of each sealing layer may be fused to form a seal around the periphery of the sampling bag. The sample bag thereby an inner layer with a low permeable, low adsorption layer coupled with a second layer providing an effective seal results in a sample bag with improved sample gas stability.

Abstract: A drive system for an agricultural work vehicle. The drive system includes a front power takeoff device configured to extend from a front portion of the agricultural work vehicle and to be driven by an engine. The drive system also includes a first gearbox and a second gearbox positioned between the engine and the front power takeoff device. The first gearbox is configured to be driven by the engine and to provide power to drive the second gearbox. The second gearbox is configured to be driven by the first gearbox and to provide power to drive the front power takeoff device. The first gearbox and the second gearbox each provide a vertical shift between a respective driven input and a respective driving output.

Abstract: A thermoforming trim press and a drive assembly for a thermoforming trim press are provided. The drive assembly includes a frame, a drive motor, a drive linkage, a first bevel gear, and a second bevel gear. The drive motor is supported by the frame. The first bevel gearbox is supported by the frame and has an input shaft coupled with a drive gear, an output shaft coupled with a ring gear, and a housing supporting the input shaft, the output shaft, the drive gear and the output shaft in meshed gear rotation. The second bevel gearbox is supported by the frame in opposed relation with the first bevel gearbox and has an input shaft coupled with a drive gear, an output shaft coupled with a ring gear, and a housing supporting the input shaft, the output shaft, the drive gear and the output shaft in meshed gear rotation, the second bevel gearbox driven via the drive linkage with the output shaft driving in counter-rotation relative to the output shaft of the first bevel gearbox.

Abstract: An adjustment drive for an adjusting device of a motor vehicle seat includes a drive motor 1, a two-stage reduction gear 4, 6, 7 and a housing 2, 3 for mounting a drive motor 1 and for accommodating the two-stage reduction gear 4, 6, 7. The gear elements of the first reduction gear stage 4 are arranged in a housing shell 2 of the housing 2, 3, which can be closed by a housing cover 3. In a front-end assembly 5 connectable with the housing shell 2 at least a part of the gear elements of the second reduction gear stage 6, 7 is arranged between the housing cover 3 and a cover plate 8 or cover and guide plate 9 connected with the housing cover 3 and is supported in axial direction.

Abstract: An apparatus for performing a supporting and/or a lifting operation to a wind turbine component inside the wind turbine nacelle is provided. The apparatus comprises at least a tool which comprises a manually operated linear actuator and a mounting device of said linear actuator in an element of the nacelle frame so that said linear actuator can be duly located with respect to the wind turbine component for performing said supporting and/or lifting operation.

Abstract: An active bearing at least for vibration reduction is described, comprising a) an interface (7) to be fitted to a load (8); b) at least one support element (3) in an operative connection with the interface (7) and a support unit (6); c) at least one linear actuator (5) supported indirectly or directly on the support unit (6); d) a gear unit (4) for the path transmission of an actuating path change originating from the linear actuator (5), said gear unit being in an operative connection with the at least one linear reactor (5); e) at least one decoupling unit (1), which serves for the decoupling of the static load transfer and for transmitting the dynamic load transfer; wherein the at least one linear actuator (5), the gear unit (4) and the at least one decoupling unit (1) are disposed serially.

Abstract: A dual clutch transmission is provided in which since at a time of pre-shifting when, while running, via one driving force transmission path of first and second driving force transmission paths extending from a first and second input shafts (12, 13) to an output shaft (14), selection means (S1, S2) for the other driving force transmission path is operated, the driving force of an internal combustion engine (E) is changed by a command from an electronic control unit (U), even if a driving force or braking force due to inertia occurs as a result of a change in the rotational speed of the first and second input shafts accompanying the pre-shifting, it is possible to reduce the shift shock by compensating for the driving force or braking force due to the inertia by changing the driving force of the internal combustion engine (E).

Abstract: A coated cogwheel includes a cogwheel body made from a basis material. A layer which is harder than the basis material is arranged at least on a part of the cogwheel body, for example on the flanks of a tooth. The layer is subdivided by seams into a multiplicity of mutually separated segments.

Abstract: The robot arm having a weight compensation mechanism has a first rotation member and a second rotation member which are respectively capable of making two-DOF rotation, a first rotation of the first rotation member is yaw rotation, and a second rotation of the first rotation member is pitch rotation perpendicular to the first rotation, a third rotation and a fourth rotation of the second rotation member are respectively pitch rotation and roll rotation, and the robot arm comprises a single-DOF gravity compensator connected to the first rotation member or the second rotation member and offsetting the gravity caused by weight of the first rotation member or the second rotation member by using an elastic force of an elastic member.

Abstract: A steering wheel includes a central portion connected to the steering column for rotation about an axis, and a rim extending around the central portion. A steering wheel includes a passageway extending through portions of the steering wheel. A plurality of spaced apart rings are disposed on the rim, and a plurality of N-type and P-type thermoelectric (“TE”) elements are disposed on the rings. The thermoelectric elements may comprise Peltier devices in the form of relatively thin plate-like units having generally planar opposite surfaces, and rectangular perimeters. An electrical conductor interconnects the P-type and N-type elements in series. The steering wheel includes first and second thermal conductors thermally connected to inner and outer surfaces of the thermoelectric elements. An air circulation device moves air through the passageway to cool the rim of the steering wheel.

Abstract: A modularized bicycle pedal includes a pedal body and a shaft module. The pedal body has a connecting side provided with a socket portion. The shaft module includes a circular enclosure, a shaft core and plural rolling units. The enclosure has a circular inner surface that defines a through hole. The enclosure is received in the socket portion and coupled to the pedal body. The shaft core partially protrudes into the through hole. The shaft core has a connecting segment and a first sustaining segment. The connecting segment is configured to connect the crank. The rolling units are rotatably sandwiched by the circular inner surface and the first sustaining segment, so that the shaft core is allowed to rotate with respect to the enclosure against an axis.

Abstract: A pedal assembly having an assistance device. In some implementations the assistance device comprises a profile fixed to the arm of a pedal, the arm of the pedal being pivotally coupled to a support. The profile includes an elongate curved surface that is acted upon by a spring-actuated lever attached to the support. In operation as the pedal arm is moved between a rest position and one or more active positions, the lever applies a force to the arm through the profile by acting upon on one or more portions of the elongate curved surface, the direction of the force applied to the arm being dependent upon the portion of the elongate curved surface being acted upon by the lever.

Abstract: The invention concerns a device (1) for protecting a breather membrane (2) enabling the ventilation of a member, notably a gear motor of a wiper system, said device including a support (3) intended to accommodate said membrane (2) on the surface of said member and a cover (4) for protecting said membrane (2), said device (1) being configured to allow circulation of air between the interior and the exterior of the member via said membrane (2). According to the invention, said cover (4), moulded in one piece with said support (3), is articulated relative to said support (3) so as to enable fixing of said membrane (2) onto said support (3) in an open position of said cover (4) and to cover said membrane (2) in a closed position of said cover (4).

Abstract: A hydraulic system of an electric vehicle may comprise: an oil container; a first and a second clutch driving circuits connected in parallel; an internal pump driven by a driving system of the electric vehicle; a first check valve connected in series at an outlet side of the internal pump; an external pump driven by an external pump motor; and a second check valve connected in series at an outlet side of the external pump. The first check valve and the internal pump connected in series and the second check valve and the external pump connected in series are connected in parallel between the oil container and the first and second clutch driving circuits.

Abstract: This mixed powder for powder metallurgy, the powder having excellent fluidity and minimal graphite powder scattering, can be obtained relatively conveniently by mixing fine graphite having an average grain diameter of 4 ?m or less with an iron based powder. The process is performed without the addition of a binder and while shearing force is applied. It is preferable that the fine graphite have an average grain diameter of 2.4 ?m or less and be wet-milled. A portion of the fine graphite is preferably added in place of at least one constituent selected from the group consisting of carbon black, fullerene, carbon compounds carbonized by baking, and graphite having an average grain diameter of 5 ?m or more.

Abstract: A method of manufacturing iron-based powder includes providing an iron-based molten steel manufactured through a iron making process and a steelmaking process to a tundish; and performing water atomization over the molten steel discharged through a nozzle connected to the tundish. The iron-based powder is manufactured from the molten steel refined after a molten iron tapped from a iron making process is charged into a converter without a pre-treatment process of the molten iron, thus economically providing the highly clean iron-based powder.

Abstract: A molten bath-based direct smelting process includes controlling the process conditions in a direct smelting vessel so that molten slag in a molten bath of metal and slag in the vessel has a viscosity in a range of 0.5-5 poise in an operating temperature range for the process.

Abstract: A partially-reduced iron producing apparatus includes: a supplying device laying ignition raw- material pellets on an endless-grate; a heating furnace heating the ignition raw-material pellets; another supplying device laying the raw material pellets on the ignition raw-material pellets; and an exhaust gas circulation device supplying an oxygen-containing gas to the raw-material pellets. The oxygen containing gas is made by circulating part of an exhaust gas discharged from the raw-material pellets and mixing it with air. A partially-reduced iron is produced by thermally reducing the raw-material pellets in a bed height direction thereof through separate combustion and heating regions. The combustion region formed on an upstream side in a travelling direction of the endless grate by supplying the oxygen-containing gas having a high oxygen concentration.

Abstract: A method for efficiently recovering a platinum group element comprises melting copper-iron scrap containing a platinum group element, forming the melt into two liquid phases, a molten copper phase containing at least one rare metal selected from the group consisting of Nd, Pr, and Dy and a molten iron phase having a carbon concentration of at least 1 mass %, with the carbon contained in the molten iron phase being derived from carbon contained in the melt, separating the two liquid phases, recovering the molten copper phase, and separating and recovering from the molten copper phase a platinum group element dissolved therein. The copper-iron scrap may contain a rare metal, or a member containing a rare metal may be added to the melt with a preferred total concentration of rare metals in the melt being at least 1 mass %.

Abstract: An improved fastener installation tool is provided that is used to install a threaded nut onto a threaded fastener bolt where access to the bolt head is not possible. The fastener bolt has a threaded shank with a noncircular recess that is adapted to receive a complimentary shaped hex key or hold bit installed in a socket gear of a power driven tool which is used to install a threaded nut onto the threaded shank of the fastener bolt. A spring biased retainer slide with an extended rod portion hold the hex key securely in a locked position. Manual retraction of the retainer slide allows the extended rod portion to release the hex key so it may be replaced when damaged without any need for any further disassembly or need for additional disassembly tools.

Abstract: A wrench fitted with a handle and a ring that can be swiveled open to grip a screw head or a nut with a positive fit, whereby the ring has a first segment that is arranged on the handle, and a free second segment as well as a connecting member that joins the second segment to the first segment in an articulated manner. A lever is provided on the connecting member so that the ring that can be swiveled open.

Abstract: A switching device of a ratchet wrench includes two engaging members respectively mounted to two rods of an operation member. The operation member has a polygonal shank which extends through the board of the head of the wrench and is connected with a switch. The operation member swings by pivoting the switch so as to control the either of the two engaging members to be engaged with the ratchet driving member. The operation member has a positioning tube, and a bead and a spring are located in the positioning tube. The bead is engaged with one of two recesses of a cover fixed to the head of the wrench when the operation member is pivoted. The cover has a flange on which a locking member is pressed. The locking member is engaged with a fixing portion in the inner periphery of the space.

Abstract: The invention discloses an adjustable wrench, including a wrench body and a worm; the wrench body includes a handle and a working part; the working part includes a fixed member, a movable member and a track; the lower portion of the movable member, whose bottom edge is arranged with a tooth part, is arranged in the track; the working part also includes a through hole in which the worm is arranged for meshing with the tooth part; when the worm is rotated, the worm interacts with the tooth part and drives the movable member to move in the directions towards or away from the fixed member; wherein the worm has at least two starts of threads. The adjustable wrench of this invention enables swift adjustments to the spacing between the movable member and the fixed member and increases the bearable torque of the worm.

Abstract: In an impact driver, a supporting ring, to which a carabiner and so on of a socket is connected, is provided in a shaft support portion in a front end of a hammer case so that the supporting ring is able to be attached and detached by using a screw. Further, a falling prevention element (wire) is provided in the supporting ring. The falling prevention element comes to a position adjacent to the screw which clamps the supporting ring so that the supporting ring is prevented from falling from the impact driver.

Abstract: According to a first aspect of the invention we provide an apparatus (1) for use with a threaded fastener including: —an inner sleeve member (100) having an internal surface threadedly engagable with the fastener and a tapered external surface; and an outer sleeve member (200) having an inversely tapered internal surface rotatably engagable with the tapered external surface of the inner sleeve member. Advantageously, the invention allows for an increased load bearing surface area between the inner sleeve member (100), which is clamped, and the outer sleeve members (200) without increasing the overall diameter of the apparatus (1) 6; a three dimensional load bearing surface area rather than a conventional two dimensional plane; more efficiently and evenly distributed load stress distribution over the load bearing surface area; higher torsion strength; and apparatus with lower mass, dimensions and volume.

Abstract: A tool is disclosed for installing a rolling element into, and removing the rolling element out of, a rolling-element bearing cage. The tool has a gripping element including a clampable jaw disposed on a base. The clampable jaw includes at least two interacting parts. At least one first screw is screwed into a first threaded bore defined in the base. The at least one first screw can be tightened to clamp together the at least two interacting parts of the jaw. A first end of the rod is attached to the base. An impact weight is coupled to the rod and is displaceable along the longitudinal axis of the rod. Further, a stop is fixedly disposed on the rod at a location spaced from the gripping element. The stop is designed to be struck by the impact weight.