Abstract: A monitoring device for tyres for vehicle wheels includes: an electronic unit; a connecting member configured for constraining the electronic unit to a tyre, the connecting member including: a first and a second base portion, mutually separated by a separated region, each of the base portions having a respective base surface associable with an inner surface of a tyre; a housing portion associated with the base portions defining, in cooperation with said base portions, a cavity for housing the electronic unit, wherein the housing portion includes at least one side structure, configured for exerting a containing action at least relative to movements of the electronic unit carried out in a major extension direction of the separation region and with respect to movements of said electronic unit carried out in a direction orthogonal to the major extension direction of the separation region wherein the cavity is confined at least by a side surface defined by an inner surface of the side structure, wherein the electr

Abstract: An apparatus for preparing and testing a sample of a subterranean formation, the apparatus comprising a pressure cell defining an interior volume, the pressure cell comprising a first end member comprising a channel formed therein, a second end member, a wall member positioned between the first end member and the second end member, and a sample cell positioned within the interior volume of the pressure cell, wherein the channel of the first end member fluidly connects with a first point external of the pressure cell, with a second point external of the pressure cell, and with the sample cell.

Abstract: A sensor pod housing assembly for placement within a borehole includes a housing, a selectively operable first hydraulic actuator supported by the housing and adapted to act in a first direction and a selectively operable second hydraulic actuator supported by the housing and adapted to act in a second direction which is substantially parallel to and opposite the first direction. The sensor pod housing assembly further includes a sensor pod adapted to contact a wall of the borehole when deployed to substantially immobilize the sensor pod relative to the borehole. A first substantially rigid link pivotally connects the first hydraulic actuator and the sensor pod, and a second substantially rigid link pivotally connects the second hydraulic actuator and the sensor pod.

Abstract: A method is provided to operate a thermal anemometer flow meter to measure a property of a stream. The method includes measuring a first heat loss to the stream from operating at a first DeltaT above a temperature of the stream, measuring a second heat loss to the stream from operating at a second DeltaT above the temperature of the stream where the second DeltaT being greater than the first DeltaT. The method further includes determining the property of the stream based on the first and the second heat losses.

Abstract: Airflow measuring apparatus compring: sub-passage that takes in part of flow of fluid flowing through an intake pipe; sensor element that is disposed in the sub-passage to measure the flow of fluid; a circuit part that converts the flow of fluid detected by the sensor element into an electric signal; connector part connected to the circuit part to output a signal externally; and casing that supports the sensor element and the circuit part, the sensor element being disposed in the intake pipe. The sensor element includes a cavity disposed at a semiconductor substrate, a diaphragm including a thin film part that covers the cavity. The sensor element on a lead frame have surfaces that are mold-packaged with resin so that a diaphragm of the sensor element and part of the lead frame are exposed. One hole is disposed at the lead frame for communication between the cavity and exterior.

Abstract: A level transducer has a power supply module, a tuning fork module, a sensing-phase corrector and a controller. The tuning fork module has a tuning fork, at least one piezoelectric driving element, and at least one piezoelectric sensing element. The at least one piezoelectric driving element and the at least one piezoelectric sensing element are stacked on each other, and are mounted on the tuning fork. The power supply module is electrically connected and outputs a voltage to the at least one piezoelectric driving element to deform the at least one piezoelectric driving element. The at least one piezoelectric sensing element is extruded and outputs a voltage signal. The sensing-phase corrector obtains the voltage signal and outputs a clock signal to feedback control the voltage on the at least one piezoelectric driving element to optimize a deformation frequency of each piezoelectric element.

Abstract: A filling level transmitter includes a sound-conducting tube and a filling level sensor. The filling level sensor has: a housing including a ceramic substrate and a metal lid soldered to the substrate, an ultrasonic transceiver arranged in the housing and having a sound-outputting region, the ultrasonic transceiver being connected by at least the sound-outputting region to the substrate, and sensor electronics arranged in the housing.

Abstract: An apparatus for determining and/or monitoring at least one process variable of a medium in a container and comprises an oscillatable unit for introduction into the container, a housing, wherein the oscillatable unit is connected with the housing in such a manner that the oscillatable unit closes the housing terminally, and wherein present in the oscillatable unit is at least one hollow space, which is accessible from an inner space formed by the housing, a driving/receiving unit for exciting the oscillatable unit to execute mechanical oscillations and for receiving the mechanical oscillations and for transducing them into an electrical, received signal. The invention is distinguished by features including that the driving/receiving unit is present in such a manner in the hollow space and the hollow space is filled with a potting material in such a manner that the driving/receiving unit is connected via the potting material for force coupling with a wall of the hollow space.

Abstract: A liquid property detecting device may be configured to be disposed in a liquid feeding unit including a container, a pump, and a feed pipe. The liquid property detecting device may comprise a first pair of electrodes and a filter. The first pair of electrodes may be configured to be disposed upstream of the feed pipe in a direction in which the liquid stored in the container flows while the pump is driving. The first pair of electrodes may be configured to detect a liquid property of the liquid stored in the container. The filter may be configured to be disposed upstream of the first pair of electrodes in the direction in which the liquid stored in the container flows while the pump is driving.

Abstract: In an electrostatic capacitance fluid level sensor including fluid level detection electrode plates mounted on conductive pins mounted on a hermetic terminal, a fluid level detection part mounted on the hermetic terminal has a detection unit including two electrodes, electrically insulating spacers fixing a positional relationship between the electrodes, and at least one connecting terminal configured to connect and fix the detection unit to the conductive pins. The connecting terminal is deformable by a weaker force than a force causing the electrodes to deform. As a result, stress applied to the electrodes of the detection unit is dispersed/relaxed. Since the detection unit is further connected and fixed to the hermetic terminal for a motor compressor, a work for mounting the sensor to the hermetic motor compressor can be rendered easier as well as the handling of the sensor.

Abstract: An inertial sensor includes oscillating-type angular velocity sensing element (32), IC (34) for processing signals supplied from angular velocity sensing element (32), capacitor (36) for processing signals, and package (38) for accommodating angular velocity sensing element (32), IC (34), capacitor (36). Element (32) and IC (34) are housed in package (38) via a vibration isolator, which is formed of TAB tape (46), plate (40) on which IC (34) is placed, where angular velocity sensing element (32) is layered on IC (34), and outer frame (44) placed outside and separately from plate (40) and yet coupled to plate (40) via wiring pattern (42).

Abstract: A resonator micro-electronic inertial sensor, preferably a micro-electromechanical system (MEMS) sensor (e.g. a gyro), for detecting linear accelerations and rotation rates in more than one axis comprises: a proof-mass system (21.1, 21.4) flexibly suspended above a substrate for performing a rotational in-plane vibration about a central axis (24,) a drive electrode system (D1, . . . D4) for driving the proof-mass system (21.1, . . . 21.4) to perform said rotational in-plane vibration, and a sensing electrode system (S1, S8) connected to the proof-mass system (21.1, . . . 21.4) for detecting linear accelerations or rotation rates in more than one axis. Said proof-mass system (21.1 21.4) has more than two proof-mass elements flexibly coupled (25.1a, 25.1b) to each other. Each proof-mass element (21.1, 21.2) is directly and flexibly connected (23.1, 25.1a, 25.1b) to an anchor structure (22) on the substrate (32). The proof-mass elements (21.1, . . . 21.

Abstract: The invention provides for an accelerometer comprising a proof mass within a fixed substrate wherein the proof mass is connected to the substrate by one or more v-beams. Acceleration is determined by measuring the deflection of the v-beam or beams.

Abstract: A micromechanical sensor comprising a substrate (5) and at least one mass (6) which is situated on the substrate (5) and which moves relative to the substrate (5) is used to detect motions of the sensor due to an acceleration force and/or Coriolis force which occur(s). The mass (6) and the substrate (5) and/or two masses (5, 7) which move toward one another are connected by at least one bending spring device (6). The bending spring device (6) has a spring bar (9) and a meander (10), provided thereon, having a circle of curvature (K1; K6; K8; K9; K11) whose midpoint (MP1; MP6; MP8; MP9; MP11) and radius of curvature (r1; r6; r8; r9; r11) are inside the meander (10). For reducing stresses that occur, in addition to the radius of curvature (r1; r6; r8; r9; r11) having the inner midpoint (MP1; MP6; MP8; MP9; MP11), the meander (10) has at least one further radius of curvature (r2; r3; r4; r5; r7; r10) having a midpoint (MP2; MP3; MP4; MP5; MP7; MP10) outside the meander (10).

Abstract: A microelectromechanical systems (MEMS) accelerometer with extended operational capabilities beyond a closed-loop saturation. The present invention combines the closed-loop feedback signal and the measured proof-mass position into a hybrid acceleration measurement, which effectively provides an operating range equal to the traditional closed-loop operating range plus the sensor's mechanical open-loop range.

Abstract: A transducer assembly includes an acoustic sensor element and an acoustic waveguide. The acoustic waveguide includes a rotatable acoustic coupler, a tube, and a foot. The foot has a mounting surface that is mountable on a fluid conduit. A circuit assembly couples to acoustic sensor element and provides a diagnostic output.

Abstract: A coupling wedge for use with a ultrasounic phased array inspection system has a body with a bottom side configured to face the object to be tested and a front side generally oriented at an angle to the bottom side and a top side to be coupled with a phased array probe. The probe includes a plurality of apertures. The front side of the wedge has grooves formed with a plurality of reflectors that are positioned on the front side of the wedge, leaving a distance from the bottom side. The change in TOF values from the reflector to a specific aperture enable the determination of the temperature change in the wedge. An alarm to an operator or alternation of focal laws in the system for temperature compensation can be applied.

Abstract: An ultrasonic measuring device including: an ultrasonic transducer device; an emission unit for emitting an ultrasonic beam; a reception unit for receiving an ultrasonic echo reflected by a test subject; and a processing unit for processing reception, wherein the processing unit identifies a transfer function with respect to the ultrasonic transducer device and the test subject based on a first reception signal corresponding to an ultrasonic beam radiated to a first area in the test subject, a second reception signal corresponding to an ultrasonic beam radiated to a second area in the test subject, and a third reception signal corresponding to an ultrasonic beam radiated to a third area located between the first area and the second area in the test subject, and performs ultrasonic image generation processing including filter processing using a deconvolution filter including the transfer function performed on the reception signals.

Abstract: This disclosure describes embodiments of a probe device that can replace the multiple probes now required to perform inspection of hollow targets. These embodiments can generate acoustic waves as both shear waves and compression waves. Moreover, configurations of the probe devices below can direct the acoustic waves across an angular range that accommodates for the position of potential anomalies in the hollow target.

Abstract: This disclosure describes embodiments of a probe assembly and an inspection system for ultrasonic inspection. Designs for the probe assembly package components to fit into a bore of a hollow target. These designs may incorporate electronics to generate waves and to detect a wide selection of anomalies (e.g., transversal crack, longitudinal crack, and volumetric flaws) that can form in the hollow target. The probe assembly provides support structure to manipulate and operate these electronics in the bore. This support structure facilitates communication of signals, e.g., from transducer elements that operate as a phased array. The probe assembly also includes a fluid circulating system and coupling system that permits the probe device to detach and reattach to match the probe device (and other parts of the probe assembly) to the size of the bore. These systems allow for fluid and electrical signals to circulate through the probe assembly.

Abstract: This disclosure provides systems, methods and apparatus related to an ultrasonic sensor for detecting ultrasonic energy. In some implementations, the ultrasonic sensor includes a piezoelectric receiver layer bonded with an adhesive to an array of pixel circuits disposed on a substrate, each pixel circuit in the array including at least one thin film transistor (TFT) element and having a pixel input electrode electrically coupled to the pixel circuit. Methods of forming ultrasonic sensors include bonding piezoelectric receiver layers to TFT arrays.

Abstract: A method for checking a value document of a specified value-document type has a window which has a foil region. The measurement values for an ultrasound transmission of the value document are established in a spatially resolved manner, and it is checked while employing the measurement values whether for a specified number of locations in a specified checking region the ultrasound transmission according to a specified criterion is greater than a specified minimum ultrasound transmission that is characteristic of a specified portion, lying outside the checking region, of at least one value document of the specified value-document type.

Abstract: A vibration detection system comprises a light source, a biconical tapered fiber comprising a biconical fiber taper and a detector is disclosed. The emission light emitted by the light source is directed to the biconical tapered fiber in one side. A detector is coupled to the other end of the biconical tapered fiber to measure the intensity of the light passing through. When the biconical tapered fiber is exposed to an external vibration, the biconical fiber taper deforms and modulates the light intensity accordingly. The received signal is then fed to the microcomputer to determine the amplitude and frequency of the external vibration. A method of vibration detection is also disclosed.

Abstract: A method of measuring a wall thickness of a pipe can include optically detecting vibration of the pipe, and computing the wall thickness of the pipe, the computing being based at least partially on the optically detected vibration. Another method of measuring a wall thickness of a pipe can include optically detecting temperature of the pipe, and computing the wall thickness of the pipe, the computing being based at least partially on the optically detected temperature. Another method of measuring a wall thickness of a pipe can include optically detecting vibration and temperature of the pipe, and computing the wall thickness of the pipe, the computing being based at least partially on the optically detected vibration and temperature.

Abstract: A method and a system for acquiring a vibratory signal for troubleshooting a rotary motor, including: an input receiving a temporal vibratory signal of the motor and at least one current rotational speed of at least one shaft of the motor, and a sampling mechanism sampling the temporal vibratory signal in real time with at least one sampling signal synchronised with the at least one current rotational speed thus generating a corresponding synchronous vibratory signal.

Abstract: A microelectromechanical pressure sensor structure comprises a planar base, side walls and a diaphragm plate, attached to each other to form a hermetically closed gap that provides a reference pressure. The diaphragm plate extends along a planar inner surface on top of the side walls, and has an outer surface on the opposite side of the diaphragm plate. At least part of the outer surface of the diaphragm plate forms a planar part that includes a recess, a depth of which extends parallel to the side walls and is less than the nominal thickness of the diaphragm. A large part of reasons causing the different bending of the diaphragm and the underlying structures can be eliminated with one or more recesses arranged to the pressure sensor structure.

Abstract: A microelectromechanical pressure sensor structure that comprises a planar base and side walls and a diaphragm plate. The side walls extend circumferentially away from the planar base to a top surface of the side walls. The planar base, the side walls and the diaphragm plate are attached to each other to form a hermetically closed gap in a reference pressure, and a top edge of the inner surfaces of the side walls forms a periphery of a diaphragm. The diaphragm plate comprises one or more planar material layers of which a first planar material layer spans over the periphery of the diaphragm. The top surface of the side walls comprises at least one isolation area that is not covered by the first planar material layer.

Abstract: A double-side-coated surface stress sensor includes a sensing membrane structure portion where at least two ends opposite each other are fixed on a mounting portion; a receptor layer that coats both surfaces of the sensing membrane structure portion; and an element detecting a stress, which is provided in the vicinity of at least one of the fixed two ends, opposite each other, of the sensing membrane structure portion or at least one of the fixed two ends, opposite each other, of the mounting portion, in which in a detection output is obtained from the element based on the stress which is applied onto the receptor layer coating the both surfaces of the sensing membrane structure portion. Accordingly, it is possible to provide a double-side-coated surface stress sensor which coats both surfaces of the sensing membrane structure portion by the receptor layer, thereby obtaining a sufficiently large detection output.

Abstract: A PEFS (Piezoelectric Finger Sensor) acts as an “electronic finger” capable of accurately and non-destructively measuring both the Young's compression modulus and shear modulus of tissues with gentle touches to the surface. The PEFS measures both the Young's compression modulus and shear modulus variations in tissue generating a less than one-millimeter spatial resolution up to a depth of several centimeters. This offers great potential for in-vivo early detection of diseases. A portable hand-held device is also disclosed. The PEF offers superior sensitivity.

Abstract: A method is provided for using low-overhead equipment to perform a dynamic load test on pipe piles of a deep pile foundation for an existing building. The existing building is lifted to a predetermined elevation above grade and cribbing stacks are positioned to support the existing building at the predetermined elevation above grade. The cribbing stacks are spaced from each other enabling low-overhead equipment to maneuver underneath the elevated building to drill drive pipe piles and to position a drop weight used for dynamic load testing the driven pipe piles. Grout is pumped under pressure into the pipe piles continuously during the drill driving of the pipe piles so that grout exits through a grout port to mix with disturbed soil about the pipe pile to encase the pipe pile in a grout-soil mixture. Sensors are attached to the pipe pile being tested. The sensors provide information regarding the pipe pile impacted by the drop weight.

Abstract: A method for determining a machining result during surface machining of components, has the following method steps of: providing a component, applying at least one device, which changes under pressure, to the component, machining the surface of the component provided with the at least one device, evaluating the machining operation on the basis of the change in the at least one device as a result of the surface machining of the component. At least one device is in the form of a film which changes at least one property during the surface machining of the component.

Abstract: An apparatus for load testing a coupon may include a test frame and a pair of spaced apart load balancing assemblies connected to the test frame, each load balancing assembly of the pair of load balancing assemblies including a load leveling mechanism connected to the test frame and a plurality of spaced apart load plates, each load plate of the plurality of load plates having a first end pivotably connected to the load leveling mechanism and a second end, the second end of each load plate including a friction holder configured to frictionally engage an end of the coupon, wherein at least one load balancing assembly of the pair of load balancing assemblies is movable along an axis of movement with respect to an opposed load balancing assembly to communicate a load to the coupon.

Abstract: Systems and methods for materials testing are disclosed. According to one embodiment, a system for materials testing comprises a communication interface coupled to testing hardware, an electronic user interface for facilitating the input of production requirements and a specification, and a display device for displaying results of tests conducted on the testing hardware, wherein the results are based in part on the production requirements and specification.

Abstract: Flowmeter for a fluid, comprising a duct unit which forms the ducts of the flowmeter, the duct unit having a plurality of ducts in a measurement region, and at least one measuring device being arranged in one of these ducts, the duct unit comprising a dividing device with one or more dividing stages for apportioning the fluid flowing into the flowmeter to the ducts, the or each dividing stage comprising at least one damming element which apportions fluid flowing through an inflow duct to at least two subducts, characterized in that the dividing device and/or an accelerating device, which is arranged in at least one of the ducts between the dividing device and measurement region, are/is designed to accelerate the fluid in such a way that the fluid has a first flow velocity upstream of the dividing device and in the measurement region a second flow velocity which is at least 1.5 times as high, in particular at least twice as high.

Abstract: The measuring transducer comprises: a transducer housing (71), of which an inlet-side, housing end is formed by means of an inlet-side, flow divider (201) having four flow openings (201A, 201B, 201C, 201D) and an outlet-side, housing end is formed by means of an outlet-side, flow divider (202) having four flow openings (202A, 202B, 202C, 202D); as well as a tube arrangement having four, curved, or bent, measuring tubes (181, 182, 183, 184) connected to the flow dividers (201, 202) for guiding flowing medium along flow paths connected in parallel, wherein each of the four measuring tubes opens with an inlet-side, measuring tube end into one of the flow openings of the flow divider (201) and with an outlet-side, measuring tube end into one the flow openings of the flow divider (202). The transducer further comprises an exciter mechanism for exciting oscillations of said measuring tube.

Abstract: A tube for extracting, diluting and discharging a sample: able to control the amount of discharged diluted solution in the tube, after the sample has been diluted; that improves the hygienic conditions of discharging the sample; that enables introduction of a predetermined amount of a sample in any liquid or solid state; and that is able to transfer a specific amount of a diluted sample into another tube for further processing without any hygienic problems and with no risk of accidents.

Abstract: A storage system for storing samples, such as frozen biological samples in RFID-tagged vials. The storage system has a plurality of lowest-level containers, such as sample boxes; a plurality of mid-level containers, such as shelves and racks; and a highest-level container, such as a mechanical freezer. Each lowest-level container receives a plurality of samples in a corresponding plurality of storage locations, each mid-level container receives two or more lowest-level containers, and the highest-level container receives the two or more mid-level containers. Each mid-level container and each lowest-level container has a corresponding indicator device. A controller sub-system tracks the locations of samples stored in the storage system.

Abstract: An electronic device includes a storage unit, a pressing apparatus, a processing unit, and a button unit having a number of buttons. Identification (ID) information of each of the buttons and a predetermined signal corresponding to each of the buttons are stored in the storage unit. When a control signal is generated by the button unit after a button is pressed, the ID information of the button that is pressed is obtained from the storage unit. The control signal is compared with the corresponding predetermined signal to determine whether the pressed button is malfunctional.

Abstract: Method and Device for Monitoring Integrity of Wooden Posts A device (10) for monitoring the integrity of a wooden post (40) comprises an outer sleeve (11), a moveable pin (12), driving means (24) and indicating means (50). The outer sleeve (11) is adapted to be mounted in a pre-formed recess (41) of complementary size and shape extending from the outer surface (43) of a wooden post (40) substantially into the centre (45) thereof. The moveable pin (12) is mounted within the outer sleeve (11) and has a head (18) arranged normally to bear against wood at the centre (45) of the post (40). The driving means (24) is arranged to urge the pin head (18) against wood at the centre (45) of the post (40). The indicating means (50) denotes any movement of the pin (12) further into the post (40).

Abstract: A drive device includes plural moving portions, piezoelectric motors that move the moving portions, at least one drive circuit that drives the piezoelectric motors, and a connection/disconnection portion that connects and disconnects the piezoelectric motors and the drive circuit. The number of drive circuits is fewer than the number of piezoelectric motors.

Abstract: A probe needle includes a head, a tail and a body connected between the head and the tail and provided with a first flat section curvedly extending from the head towards the tail for providing sufficient deformation when the tail is pressed on a device under test, and a second flat section neighbored to the first flat section for supporting the probe needle in between upper and lower dies. When the probe needles are used in a probe module, the probe needles can be arranged with a pitch same as that of the conventional probe needles even though the probe needles are formed from posts having a relatively greater diameter than that of the posts for making the conventional probe needles, such that the probe needles may have enhanced current withstanding capacity and prolonged lifespan.

Abstract: The invention relates to a method for producing a sensor. In the method, a sensor element having an IC is pre-overmolded to produce a preform, wherein the preform is designed in such a way that the preform can accommodate electrical contacts for the sensor having various dimensions and/or in various positions by press fitting. The electrical contacts are pressed into holes/recesses of the preform, the connections of the IC of the sensor are connected to the electrical contacts, and the preform is inserted into an injecting mold and is overmolded to produce the finished sensor. In this way, sensors for different applications can be produced in a substantially standardized manner. The invention further relates to a sensor.

Abstract: A gyroscopic apparatus, having application as prime mover, has a pair, or alternatively multiple pairs, of flywheels disposed opposite one another. A pivot axis of the flywheels lies in a position midway between the flywheels for each pair. Each flywheel has its own separate electric motor or engine. A drive arrangement operates to spin the assembly unit about a second axis, in the same plane, but perpendicular to the flywheel pair axis.

Abstract: A surgical instrument, in at least one form, includes an end effector and a power module. The power module may include a first motion conversion assembly. The first motion conversion assembly includes a first rotary drive and a first axial drive operably coupled to the first rotary drive. The power module may further include a second motion conversion assembly which may include a second rotary drive and a second axial drive operably coupled to the second rotary drive. The power module may further include a motor configured to generate at least one rotational motion to actuate the end effector and a transmission assembly configured to selectively engage the motor with the first rotary drive and the second rotary drive, wherein the motor is concentrically arranged with the first rotary drive and the second rotary drive.

Abstract: An apparatus is disclosed for propelling a coil clad hose through a passage through a housing. A first driven pair of bull gears sandwiching a rotatable drive sprocket is rotatably fixed to a first rotatable axle in the housing orthogonal to the passage. A second pair of bull gears sandwiching a second drive sprocket are all rotatably fastened to a second axle in the housing parallel to the first axle. The second pair of bull gears mesh with the first pair of spaced bull gears. Teeth on the drive sprockets engage part of the coil clad hose when the fluid hose is inserted into the passage. A slip clutch between the pairs of spaced bull gears and the drive sprocket on each of the axles adjusts frictional grip on the coil when one of the bull gears is driven to propel the hose through the passage.

Abstract: The present invention relates to a reducer including a planetary gear and a steering apparatus of a vehicle including the same, and more particularly to a reducer including a planetary gear which can compensate a gap generated by wear of gear teeth of planet gears, sun gears, and ring gears, and a steering apparatus of a vehicle including the same.

Abstract: An electric linear actuator has a cylindrical housing, an electric motor, a speed reduction mechanism, and a ball screw mechanism. The ball screw mechanism has a nut and a screw shaft coaxially integrated with the drive shaft. The housing has receiving bores to receive the screw shaft. A cylindrical sleeve is securely press-fit into the receiving bore of the housing. The sleeve has one pair of axially extending recessed grooves formed on its inner circumference at diametrically opposed positions. A guide pin, mounted on the end of the screw shaft, engages the recessed grooves. An annular groove is formed near an opening of the receiving bore of the housing. The sleeve is held in the receiving bore by a stopper ring snapped into the annular groove.

Abstract: Disclosed is a reducer of an electric power steering apparatus. In the reducer, the worm wheel is elastically supported by the elastic member in a direction to the worm wheel in order to compensate for the spacing between the worm shaft and the worm wheel, and an elastic force of the elastic member applied to the bearing bush or the worm shaft bearing is simply adjusted and measured by adjusting or measuring a load applied to the supporting member.

Abstract: Discloses is a reducer of an electric power steering apparatus. The reducer of the electric power steering apparatus can reduce the rattling noise caused by an increase of backlash due to friction and abrasion of a worm and a worm wheel or by an impact transferred through a wheel and a steering shaft from the road and allowing a pivotal movement of a worm shaft, while decreasing a rotation resistance and blockage of a worm shaft and a worm shaft bearing to increase steering feel of a driver.

Abstract: A railway vehicle gear unit that is constituted by accommodating, in a gearbox, a large gear that is fixed to an axle provided on a truck frame and that engages with a small gear to transmit a torque, and the small gear, wherein on the inner surface of the gearbox in the circumferential direction of the large gear, a water removing device that removes water included in lubricant oil within the gearbox is installed, and the water removing device is arranged in an empty space formed above an extended line of a line connecting the axle and a small-gear shaft or is arranged in an empty space formed below the extended line of the line connecting the axle and the small-gear shaft.