Abstract: Provided is an ultrasonic transducer including: a housing including a bottom surface and side members, the side members facing each other and extending upwardly with a space part therebetween, the housing having an opened upper part; a piezoelectric resonator disposed at an upper portion of the bottom surface; a housing auxiliary member disposed at upper portions of the side members and inserted into the space part; and a signal connection pin part disposed at an upper portion of the housing auxiliary member. In particular, the housing auxiliary member is formed of material having a lower density than the housing, thereby improving isotropic radiation characteristics.

Abstract: A tire testing apparatus allows attachment and detachment of a rim assembly in which first and second rims are integrated and performs testing of a tire attached to the rim assembly. The tire testing apparatus includes a first attaching part; a second attaching part; a rotating part that rotates the first attaching part around a reference axis orthogonal to the first reference surface of the first rim attached to the first attaching part; a fixing part that fixes the first attaching part and the second attaching part to each other and is capable of releasing the fixation; an attaching portion moving part that adjusts the distance in a direction along the reference axis between the first attaching part and the second attaching part; and a rotation regulating part that regulates rotation of the second attaching part around the reference axis.

Abstract: Machine for balancing vehicle wheels includes: a base frame supporting elements for gripping and rotating a wheel around a balancing axis; first sensor elements associated with the gripping and rotation elements for detecting the unbalance of the wheel; an electronic processing and control unit associated with the first sensor elements for calculating a balancing weight to apply onto the wheel; and an auxiliary detection appliance associated with the base frame and having: a rolling device for pressing onto the wheel, and in turn including: a support structure for two rollers revolving around axes parallel to each other; and a flexible member closed on itself in a loop, wrapped around the rollers and having a substantially flat active section, and a return section substantially opposite the active section; and second sensor elements associated with the rolling device for detecting the behaviour of the wheel when pressed by the rolling device.

Abstract: Method for determining the contact angle (?) of a rolling element bearing (10) comprising an inner ring (12), an outer ring (14) and a plurality, P, of rolling elements (16) interposed between the inner ring (12) and the outer ring (14). The method comprises the step of determining the relative speed of P?1 or fewer of said plurality, P, of rolling elements (16) with respect to the inner ring (12) and/or the outer ring (14) and determining the contact angle (?) of said rolling element bearing (10) therefrom.

Abstract: The multiaxial inertial sensor of movements is a micro/nano sensor that makes it possible to couple at least one accelerometer with other structures, either accelerometers or gyroscopes, by an oscillating disk structure. The oscillating disk also forms an inertial sensor such as a gyrometer. This single-chip structure associating both gyroscopes and accelerometers makes it possible to achieve detections and measurements in up to 6 axes, in other words 3 accelerometer axes and 3 gyroscope axes, and to exert control by a single and unique electronic unit, thus permitting a single automatic control loop in excitation and a single electronic reading chip. Application to technologies known as MEMS.

Abstract: A device for measuring yaw rate, having a mechanical yaw rate sensor, which has an inert mass that can be set into a primary vibration along a primary axis by means of an excitation device and can be deflected along a secondary axis extending transversely with respect to the primary axis so that when a yaw rate occurs about a sensitive axis extending transversely with respect to the primary and to the secondary axis, said device carries out a secondary vibration excited by the Coriolis force. A sensor element detects an amplitude-modulated signal for the secondary vibration. A sigma-delta modulator has a low pass filter connected to the sensor element, a quantizer and a secondary actuator disposed in a feedback path for applying a force which counteracts the Coriolis force.

Abstract: Error sources related to aerodynamics of an inertial sensor resonator are detected by modulating the distance between the resonator and the underlying substrate and sensing modulated error signals in the accelerometer that are induced by such modulation. Compensating signals may be provided to substantially cancel errors caused by such error sources.

Abstract: An acceleration sensor includes an outer frame body, a heating element, a first temperature sensing element for temperature measurement and a second temperature sensing element for temperature measurement, and an operational amplifier. In the outer frame body, a fluid chamber capable of sealing a fluid inside thereof is formed. The heating element is formed on a circuit mounting surface which is a specific inner wall surface of a plurality of inner wall surfaces defining the fluid chamber. The first temperature sensing element and the second temperature sensing element are formed on the circuit mounting surface. The distance from the first temperature sensing element to the heating element is shorter than the distance from the second temperature sensing element to the heating element. The operational amplifier calculates a difference between a measurement result by the first temperature sensing element and a measurement result by the second temperature sensing element.

Abstract: The disclosed embodiments generally relate to non-destructive evaluation methods. In an embodiment, a method for non-destructive evaluation of a aerospace component includes positioning a first plurality of sensors in the region of interest, positioning a second plurality of sensors in the region of interest, inducing a vibration in the region of interest using the first plurality of sensors and receiving a resonance frequency spectra using the second plurality of sensors, and comparing the received resonance frequency spectra against a reference spectra to determine the presence of an anomaly in the region of interest.

Abstract: Embodiments of present invention are directed to near infrared (IR) laser-induced vibrational absorption systems and methods for material detection. According to one embodiment, a system for detecting materials may include: at least one laser configured to output light in the near IR spectrum so as to excite at least one vibrational overtone frequency, at least one combination band frequency, or a combination thereof, of a sample comprised of one or more of materials; a detector configured to detect a physical phenomenon of the sample in response to laser excitation; and an analyzer configured to the analyze the detected physical phenomenon and to identify the one or more materials based comparison of the detected signatures with known signatures of one more materials.

Abstract: A solution for evaluating the condition of a rail component based on resonant response profiles across a set of bands of vibrations. The vibrations can be induced into the target component during normal operation of the target component. The resonant response profile of the rail component can vary depending on wear or damage, and thus can be used to determine whether the rail component can safely remain in use. An embodiment comprises an isolated segment of rail of a length selected to allow a single railroad wheel on it at a time, with a set of devices which can acquire the resonance signals from the wheel.

Abstract: There is set forth herein a sensor for sensing of substances. The sensor can include a sensing crystal oscillator and a reference crystal oscillator. The sensing crystal oscillator and the reference crystal oscillator can be arranged in a phase locked loop so that the oscillators oscillate at a common frequency. The sensor can be configured so that there is a baseline phase differential between the oscillation frequencies of the sensing crystal oscillator and the reference crystal oscillator. Detectable substances accumulating on the sensing crystal oscillator will induce a phase shift between output frequencies of the reference oscillator and the sensing crystal oscillator to allow for highly sensitive sensing of substances in small concentrations.

Abstract: In a quality evaluation method, an evaluation substrate that includes a mounting region, in which a multilayer capacitor is to be mounted, in a center portion of the evaluation substrate is fixed in place using a plurality of fixed portions at corner portions of the evaluation substrate, each of which is a same distance from the mounting region. A voltage is applied to the multilayer capacitor mounted on the mounting region of the evaluation substrate. Sound is collected using a microphone that is near the multilayer capacitor mounted on the evaluation substrate.

Abstract: Provided are devices, systems, and methods for the testing of materials and structures. For example, the devices, systems, and methods are optionally used for the non-destructive testing of a material or structure. Furthermore, the devices, systems, and methods may optionally use a high-amplitude, air-coupled acoustic source for non-destructive testing of materials and structures.

Abstract: An ultrasonic transducer holder with a floating head is disclosed. This transducer holder allows the waterpath of the ultrasonic signal to be maintained over a contoured surface. Maintaining a constant waterpath between a transducer and the piece being inspected allows for inspection of surfaces that normally would not be capable of inspection by prior ultrasonic transducer holders.

Abstract: An ultrasonic testing equipment of the present invention includes: an ultrasonic probe having a plurality of transducers arranged along a predetermined annular curved surface; a transmission/reception control unit that causes at least two transducers selected from the plurality of the transducers to transmit the ultrasonic waves to and receive the same from the tubular test object and a ultrasonic testing waveform display unit which displays ultrasonic testing waveforms received by the selected transducers radially corresponding to the propagation directions of the ultrasonic waves transmitted from and received by the selected transducers.

Abstract: A plurality of subsets of ultrasonic transducers in an array of ultrasonic transducers are configured to transmit ultrasonic waves at various angles simultaneously toward a test object so that an anomaly of any orientation in the test object can be detected efficiently.

Abstract: An ultrasonic inspection device employs a transducer incorporating an ultrasonic array and a positioner/holder having abase with a rail extending from the base to support the transducer in at least two lateral positions. A guide extends from the base for contact with a web of a composite shape, the guide maintaining the rail substantially perpendicular to the web. An encoder supported by the base and contacts a flange of the composite shape. The Positioner/holder is adapted for longitudinal motion along the composite shape to create C-scans with the transducer.

Abstract: A pressure transducer assembly that uses static pressure compensation to capture low-level dynamic pressures in high temperature environments. In one embodiment, a method comprises receiving, at a first tube, a pressure, wherein the pressure includes a static pressure component and a dynamic pressure component; receiving, at a micro-filter, the pressure; filtering, by the micro-filter, at least a portion of the dynamic pressure component of the pressure; outputting, from the micro-filter, a filtered pressure; receiving, at a first surface of a first sensing element, the pressure; receiving, at a second surface of the first sensing element, the filtered pressure; measuring, by the first sensing element, a difference between the pressure and the filtered pressure, wherein the difference is associated with the dynamic pressure component of the pressure; and outputting, from the first sensing element, a first pressure signal associated with the dynamic pressure component of the pressure.

Abstract: A holographic pressure sensing apparatus includes a first optical fiber with a diffractive element at its end face, and a light-coupling component for receiving from the first optical fiber end face first and second images respectively formed by interaction with the diffractive element of a first light of a first wavelength and a second light of a second wavelength. Displacement of the light-coupling component, toward or away from the first optical fiber end face, will adjust an overlap of the first and second images, such that a change in a measurement of said overlap will indicate a change of the pressure in the fluid surrounding the casing.

Abstract: A method and system for determining creep capability of turbine components is provided. A plurality of turbine components are manufactured from a material having known creep characteristics. Each of the plurality of turbine components is subjected to at least one of tensile stress, centrifugal stress and thermal stress, until a measurable amount of creep is acquired. The turbine components so tested are compared against known creep characteristics for the material used in the components. Components exhibiting an amount of creep greater than a predefined amount of creep will be separated from the plurality of turbine components and not placed into service.

Abstract: A measuring device linked to a conveyor for transporting a flexible glass is provided. The measuring device includes a base, a first roller, and at least one second roller. The first roller disposed on the base moves back and forth along a first axis. The second roller disposed on the base moves back and forth along a second axis. The flexible glass enters the conveyor passing through the second roller and the first roller. An operation method of the measuring device is also provided.

Abstract: A mount assembly for compression testing of an article of apparel on a compression testing machine. The machine has a head and a sensor. The mount assembly includes a substantially rigid core member and a resilient member that is supported on and that at least partially covers the cover member. The resilient member is configured to support the article of apparel thereon. The resilient member is configured to resiliently deform in response to a compression applied to the article of apparel from the head of the impact testing machine. As such, the sensor detects an effect of the compression on at least one of the resilient member and the core member.

Abstract: A method is provided for monitoring velocity of a fluid flow through a predetermined fluid flow space. A fiber optic conductor includes a flow measurement portion defining an elongated dimension extending across a portion of the fluid flow space. The fluid flow in the fluid flow space causes the measurement portion of the fiber optic conductor to flex in a direction transverse to the elongated dimension. Optical radiation is supplied to the fiber optic conductor, and optical radiation is received from the fiber optic conductor after the supplied optical radiation has passed through the measurement portion. The received optical radiation is analyzed to effect a determination of a flow velocity of the fluid flow.

Abstract: The multiphase flow detector detects the different fractions of different phases of fluids, i.e., oil, water, and/or gas, flowing through a pipeline or the like. The detector includes a plurality of capacitive and resistive probes extending radially into an oil delivery pipeline. The probes preferably have various different lengths from one another to detect differences in fluid phases at differing distances from the pipe wall as the fluid flows randomly therethrough. The capacitive and resistive probes are preferably evenly spaced from one another in an alternating circumferential array. Two rings or stations of such probes are preferably installed in the pipe to measure the velocity of flow in the pipe, as well as the fluid fractions flowing therethrough. Appropriate algorithms enable a central controller to determine the fraction differences between oil and water and between oil and gas, and therefore to determine the fraction difference between water and gas.

Abstract: The present invention relates to an apparatus and method for measuring the flow-rate of different fluids present in a plurality of distinct multiphase streams (C), in transit, each through a respective main flow pipe (2). The apparatus (1) comprises a measuring unit (3) for each pipe (2). Each measuring unit (3) comprises a sampling device (4). Each measuring unit (3) comprises first and second measuring means (5) of the differential pressure type situated downstream of the respective sampling device (4). The apparatus (1) comprises a phase separator (8) associated with the measuring unit (3). The apparatus (1) comprises selection means (18) interposed between the measuring unit (3) and the separator (8) for putting the latter in communication with one of the sampling devices (4) envisaged.

Abstract: A flowmeter includes a first chamber and a second chamber connected through a channel. The first chamber is provided with a first deformable membrane and with first and second gauges. The second chamber is provided with a second deformable membrane and with third and fourth gauges. The four gauges form a Wheatstone bridge.

Abstract: A force measuring device. The device comprises an x-axis sensor beam for measuring x-direction forces, a y-axis sensor beam for measuring y-direction forces, a z-axis sensor beam for measuring z-direction forces, and wherein the x-axis, y-axis and z-axis sensor beams are decoupled such that forces exerted by a specimen in one direction do not exert substantial forces on the other two sensor beams.

Abstract: The present invention relates to the field of microsensors, and particularly to a passive and reversible deformation sensor, specifically cycles of deformations in a direction OX of a structure, specifically during cycles of temperatures or mechanical stresses to which the structure is subjected, this sensor including elements (4, 5, 6) for detecting and, preferably, counting cycles of variations in the distance between two points or areas of a structure, these elements including a support having first and second portions (41, 44) attachable to, respectively, either of the two points or areas of the structure, wherein the detecting elements are associated with each of the first and second portions of the support, sensor characterized by in that the detecting elements include elements (541, 542, 543, 551, 552, 553, 561, 562, 563) for distinguishing between at least two different thresholds of cycles of variations in distance.

Abstract: A force sensor includes a transducer with a measuring element operatively connected to a measuring object for generating measuring signals of a force acting on the measuring object, and two in parallel transmission channels transmit mutually corresponding signals of the measuring signals independently from one another and connected in parallel to the same transducer. A test signal is evaluated in a transmission channel in which the test signal has been injected and in another transmission channel in which the test signal has not been injected. In another testing method, the transmitted signals are compared.

Abstract: A pressure sensor and a pressure sensing method are provided. The pressure sensor includes a substrate; a sensor thin film transistor (TFT) disposed on the substrate and including a gate insulating layer, wherein the gate insulating layer includes an organic matrix in which piezoelectric inorganic nano-particles are dispersed; a power unit configured to apply an alternating current (AC) signal to a gate of the sensor TFT; and a pressure sensing unit configured to obtain a remnant polarization value based on a drain current which is generated in response to the AC signal and detected by the sensor TFT, and to sense a pressure based on the remnant polarization value.

Abstract: Device (1) for measuring physical characteristics or changes in physical characteristics in a sheet (2), provided with one or more sensors (3) embedded in the sheet (2), whereby the sensors (3) are meant to measure at least one of the aforementioned physical characteristics and generate or influence an electrical signal (8) as a function of a measured physical characteristic or a change in such a physical characteristic, whereby the device (1) also includes a signal processing unit (9) for processing the electrical signal (8) or the electrical signals (8) supplied to the signal processing unit (9) from the sensor (3) or the sensors (3).

Abstract: A first pedaling force measurement device measures a plurality of pedaling force parameters acting on a first crank arm to one end of which a first pedal can be attached and to another end of which a crank shaft can be attached. The first pedaling force measurement device is provided with a strain-flexing part, a first parameter detection part and a first interference suppression part. Strain acting on the first crank arm is conveyed to the strain-flexing part. The parameter detection part is disposed on the strain-flexing part, and detects a plurality of parameters based on the strain being conveyed to the strain-flexing part. The interference suppression part suppresses interference in one parameter detected by the parameter detection part from the other parameters.

Abstract: A portable nanoparticle sampler for collecting respirable particulate matters and nanoparticles is composed of a tangential flow cyclone, a multi-microorifice impactor and a filter cassette. The tangential flow cyclone can remove the microparticles with cutoff aerodynamic diameter (dpa) larger than 4 ?m and guide the airflow to the multi-microorifice impactor located below the cyclone. The multi-microorifice impactor includes a multi-orifice nozzle and a rotary impaction plate for enabling the microparticles with dpa from 100 nm to 4 ?m to be uniformly collected on a silicon-oil-coated impaction substrate. The remanent microparticles with dpa smaller than 100 nm are collected by the filter cassette. Therefore, compared with the prior art, the portable nanoparticle sampler is characterized by low pressure loss and accurate microparticle sizing to meet the requirement of nanoparticle sampling at workplaces.

Abstract: A method of taking a fluid samples from a processing line is provided that includes: placing an input conduit in fluid communication with the processing line; operatively coupling the input conduit to a peristaltic pump and a valve block; operatively coupling the valve block to a valve actuator so that the valves are movable among an off position, a flush position, and a sample position; controlling the valve actuator to move the valves to the flush position and turning on the peristaltic pump so that fluid from the processing line is pumped to a waste bag; and controlling the valve actuator to move a particular valve to the sample position and to move any valve upstream of the particular valve to the flush position while the peristaltic pump remains on so that fluid from the processing line is pumped to the sample bag associated with the particular valve.

Abstract: A sample collection device is provided. The collection device includes an input conduit, a plurality of automated sample collection bags, a waste collection bag, and a valve block. The input conduit is connectable to a fluid processing line. The automated sample collection bags each have a sample volume and the waste collection bag has a waste volume. The valve block a plurality of three-way valves and an output, where the plurality of three-way valves correspond in number to the plurality of automated sample collection bags, each of the three-way valves placing the input conduit in fluid communication with a different one of the plurality of sample collection bags. The output is in fluid communication with the waste collection bag. The collection device has a ratio of the waste volume to the sample volume of not more than 15:1.

Abstract: A test buck, a test buck system and related method are disclosed. The test buck system may comprise a controller and a test buck. The test buck may include a portable bed, a seat module mounted to the bed, and a first OIM disposed on the bed. At least a portion of the first OIM may be selectively moveable in at least four degrees of freedom, up to six degrees of freedom. The controller may be electrically connected to a first Operator Interface Module (OIM). The controller may be configured to selectively move at least a portion of the first OIM in at least four to six degrees of freedom.

Abstract: Apparatus and methods for monitoring the emergence of soil pests in a two plant system are disclosed. In one embodiment, an emergence cage covers at least a portion of the root system of two plants. The emergence cage includes a frame defining a perimeter, a mesh or screen covering attached to the frame, a first plant opening configured to receive the first plant, a second plant opening configured to receive the second plant, and a collection container for collecting the pest of interest. The pests emerging from the ground under the cage are collected in the collection container, and the number collected is periodically determined.

Abstract: A merchandise display security device for displaying and protecting articles of merchandise includes a security sensor having adjustable retaining arms for securely retaining articles of merchandise having various dimensions. Each of the opposed retaining arms includes a grip portion at a first end and a rack portion at a second end opposite the grip portion that operatively engages a rotatable pinion gear. The rack portions are disposed about the pinion gear such that the retaining arms are moveable in a lateral direction in opposite directions to accommodate articles of merchandise having various widths. The retaining arms are rotatably disposed within a base portion and a cap portion removably attached to the base portion such that the retaining arms are rotatable about a lateral axis to accommodate articles of merchandise having various thicknesses.

Abstract: Disclosed are power systems for use on various types of power machines, including an engine and a hydraulic pump assembly positioned in-line with and powered by an engine output shaft. A driving member powered by the engine has a central cavity through which access to the engine output shaft is provided to the hydraulic pump. A driven member is in communication with the driving member to receive power. The driven member is coupleable to a gearbox drive shaft that drives a gearbox, the gearbox having an output capable of driving a power take-off shaft.

Abstract: A positioning device includes a base and two positioning mechanisms oppositely positioned on the base to position a workpiece. Each positioning mechanism includes a driver positioned on the base, a mounting member mounted on the base, a gear rack, a gear, and a positioning member. The mounting member defines a sliding groove. The gear rack slidably is received in the sliding groove and connected with the driver. The gear is rotatably connected with the mounting member and is meshed with the gear rack. The positioning member is fixedly-connected with the gear. The driver drives the gear rack to slide along the sliding groove to make the positioning member rotate and outstretch into an interior of the workpiece. The drivers drive two positioning members apply two opposite forces on the workpiece to positioning the workpiece.

Abstract: In the transmission of mechanical movements, a mechanical angular positioning device is provided, and applies notably to optical instruments necessary to position an element such as a mirror according to three predefined positions. The angular positioning device comprises an assembly of connecting rods and an assembly of pivot connections, the axes of which are parallel to one another. A first input connecting rod, a second output connecting rod and a third connecting rod are in pivot connection with a frame of the device. A fourth and a fifth connecting rod are each connected by two pivot connections to two other connecting rods. The input connecting rod can be rotated by a motor. The angular positioning device is configured such that the output connecting rod can adopt three distinct angular positions, for each of which two connecting rods in pivot connection with one another generate a dead centre in the device.

Abstract: In the transmission of mechanical movements, a mechanical angular positioning device is provided, and applies to optical instruments to position an element like a mirror according to three predefined positions. The angular positioning device comprises a frame and two imbricated mechanical movement transmission assemblies. The first assembly comprises a first support in pivot connection with the frame according to a first axis, which is rotatable by a first motor via two connecting rods which generate two dead centres for the first support. The second mechanical assembly comprises a second support in pivot connection with the first support, according to a second axis, not parallel with first axis. This second support is rotatable by a second motor via two connecting rods which generate two dead centres for the second support. One of the dead centres of the first support can coincide with one of the dead centres of the second support.

Abstract: Provided is an actuator device used in a plurality of sites of a multi-shaft driving mechanism such as a multi-shaft manipulator, a robot arm, a leg structure and a snake-shaped robot. A torque sensor 14 is connected to a bearing 17 such as a cross roller bearing through a mount part. As illustrated, the torque sensor 14 is driven by an outer ring relative to a stationary part case 19 of an actuator device 10. An attachment surface of an output shaft frame 20 is arranged in a position offset from the bearing 17 on a side of the stationary part case 19. An entire length of the actuator device 10 in an output shaft direction does not change also after the output shaft frame 20 is attached and an occupied space does not increase.

Abstract: A head structure of a robot according to the invention includes a first motor and a second motor so supported side by side within a head of the robot that output shafts are positioned coaxially with each other; a left elastic frame that is so driven by the first motor and one end of which is so fitted as to be rotatable around the output shaft and the other end of which extending in a perpendicular direction from the output shaft is supported by a trunk of the robot; and a right elastic frame that is so driven by the second motor and one end of which is so fitted as to be rotatable around the output shaft and the other end of which extending side by side with the left elastic frame from the output shaft is supported by the trunk.

Abstract: A rack with a rack tip is disclosed. The rack tip is slidably mounted to the end of the rack.

Abstract: A push-pull chain actuator (1) includes a housing with a chain exit/entry opening (4) and a sprocket (9) arranged to engage a push-pull chain (3). The sprocket (9) causes the polygon effect. The actuator includes a first chain guide part (10a) for guiding said push-pull chain (3) around the sprocket (9) and a second chain guide part (lob) for guiding said push-pull chain (3) at the correct angle between the chain exit/entry opening (4) and the sprocket (9). The second chain guide part (10b) is shaped and dimensioned to counteract the polygon effect. Alternatively, the second chain guide part (10b) can be shaped and dimensioned to reduce chain oscillations caused by the rollers (8c) engaging or disengaging the chain exit/entry opening (4) at the end of the second chain guide part (10b).

Abstract: A mechanism with an inner race, which has cams, an outer race and rollers between the cams and the outer race. The inner race has a first notch while the outer race has a second notch with a narrow portion and a wider portion. A member is disposed in the first and second notches. Positioning of the member in the first notch and the narrow portion of the second notch inhibits relative rotation between the inner and outer races and power is not transmitted between the outer race and a power transmitting member, such as a gear. Positioning of the member in the first notch and the wider portion of the second notch permits some relative rotation between the inner and outer races to cause the cams to urge the rollers outwardly so that the outer race frictionally engages the power transmitting member to facilitate transmission of rotary power therebetween.

Abstract: A locking device for inhibiting the engagement of the reverse gear of a motor vehicle transmission has an inhibitor (2) arranged in a housing (1). The inhibitor (2) prevents the movement of a transmission part (15) of the transmission in a first position and permits the movement of the transmission part (15) in a second position. A sensor (8) for indicating the engaged reverse gear is further provided in the housing (1). The inhibitor (2) is axially movable in the housing (1) and follows the movement of a core part (3), which is likewise movable in the axial direction through a solenoid arrangement (18) provided in the housing (1). The coil (5) of the solenoid arrangement (18) surrounds the core part (3). The solenoid arrangement (18) is arranged in a chamber (9) of the housing (1).

Abstract: An automatic commodity transportation system, adapted for transporting glass substrate of a TFT-LCD of a liquid crystal display device, wherein the automatic commodity transportation system includes a plurality of storing cabinets, a plurality of storing trays removeably disposed within the cabinet, and a transporting apparatus, wherein the transporting apparatus is used to move the trays between different storing cabinets, the transporting device which includes a chassis. A robot arm is rotatably mounted onto the chassis. A protective arrangement is provided on the robot arm to stop the operation of the robot arm when the protective arrangement is triggered to sending out a signal. As the automatic commodity transportation system is arranged with an anti-collision device such that a collision with other moving or stationary part is therefore effectively lowered. As a result, the halt and maintenance resulted of a damaged rotary arm can be avoided, and the production will not be affected.