baber/WOPTO huggingface dataset:
Patent JP-2003181801-A (JP)
Title: Apparatus for cutting plate-like body
Inventor: TSUTSUI MIKIO
IPC: B27D1/10
Filed: 2001-12-18
Abstract: <P>PROBLEM TO BE SOLVED: To provide an apparatus for cutting a plate-like body for improving a productivity to improve lives of an edge tool and a receiving member for receiving the edge tool by finishing operation by cutting action at a time when cutting with the edge tool of defective parts to a lower side and an upper side in a carrying direction of a veneer and the carrying are repeated and the veneer wherein an integrated length in the carrying direction of the cut veneer reaches a specific length is cut to the specific length with the edge tool.  <P>SOLUTION: When the integrated length in the carrying direction of the veneer 1 from which the defective part is cut reaches the specific length, an anvil roll 11, a front conveyor 17 and a rear conveyor 45 are stopped. A cam shaft 29 is rotated positively in the arrow direction to cut the veneer 1 to the specific length with the edge tool 23d. Then, the cam shaft 20 is reversely rotated by the same angle as the angle of being positively rotated and the edge tool is allowed to go backward to the original position isolated from the anvil roll 11 and stopped. Then, the veneer cut to the specific length with the front conveyor 17, the anvil roll 11 and the rear conveyor 45 and the remainder veneer are carried.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002291199-A (JP)
Title: Spindle having magnetic and fluid bearings
Inventor: CHEN SHIXIN
IPC: F16C33/74
Filed: 2001-12-20
Abstract: PROBLEM TO BE SOLVED: To provide a spindle motor having magnetic and fluid bearings. SOLUTION: The spindle motor used in precision equipment such as a hard disk drive includes a stationary sub-assembly, and a rotary sub-assembly that can move to the stationary sub-assembly to support a magnetic disk. Also, the spindle motor has an integral bearing system having fluid journal bearing for generating a desired radial load, and the magnetic bearing for reducing friction resistance while the spindle motor is started, stopped, and operated. During the operation of the spindle motor, the magnetic bearing is fully used, thus suspending the rotary sub-assembly by the stationary sub-assembly. The spindle motor where the fluid journal bearing is integrated with the magnetic bearing can speedily and accurately operate, increase the radial load and rigidity, and reduce the friction resistance, thus improving performance of the spindle motor for saving energy.
Patent JP-2002317684-A (JP)
Title: Operating condition discriminating device of internal combustion engine
Inventor: KURODA CHIKAHIKO
IPC: F02D45/00
Filed: 2001-12-20
Abstract: PROBLEM TO BE SOLVED: To quickly and accurately discriminate the operating condition of an internal combustion engine in a simplified system constitution having no sensor for throttle opening. SOLUTION: The internal combustion engine 1 includes a suction passage 2 whose suction pressure PM may change, and because the size of the change amount of the suction pressure PM with the absolute taken into account sensed at every certain crank angle interval in accordance with the operating condition is merely compared with the specified threshold, it it is possible to quickly and accurately discriminate whether the engine 1 is in the accelerating/ decelerating condition or in steady condition. If at this time, the specified crank angle is assumed as a crank angle in the suction stroke of the engine 1, it is possible to seize the timing at which the suction pressure PM changes greatly, and a more accurate judgement can be made for the operating condition of the engine 1 on the basis of the change amount of the suction pressure PM.
Patent JP-2003184204-A (JP)
Title: Electromagnetic-shielding structure
Inventor: HASEGAWA KIYOMITSU
IPC: E04B1/92
Filed: 2001-12-21
Abstract: <P>PROBLEM TO BE SOLVED: To solve the problem that the electromagnetic-shielding performance of the abutting sections of the mutual end sections 1a and 1a of each gypsum board 1 and 1 is deteriorated because the mutual conductive materials of each gypsum board 1 and 1 are not connected electrically in the abutting sections and electromagnetic waves are easy to lead through a whit gap formed in the abutting sections.  <P>SOLUTION: In an electromagnetic-shielding structure in which a plurality of tabular building materials containing the conductive material are installed by mutually abutting the end sections of the tabular building materials gypsum boards 1 against core materials gypsum-board constituting sections 2, conductive plates such as conductive long-sized plates 10 are mounted on the exposed sections abutting sections 8A of the core materials of each tabular building material, and each tabular building material is connected electrically through the conductive plates.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003181943-A (JP)
Title: Filament winding apparatus
Inventor: TOEDA MINORU
IPC: F16C3/02
Filed: 2001-12-21
Abstract: <P>PROBLEM TO BE SOLVED: To provide a filament winding apparatus in which a yarn is prevented from being wound at an impregnation roller even when a yarn supplying amount is temporarily reduced due to a temporary reduction of a yarn supplying speed to a mandrel.  <P>SOLUTION: The filament winding apparatus winds the yarn F on the mandrel 6 via a supply head by impregnating the yarn F with a resin by a rotating impregnation roller 2 comprises a brake mechanism 14 for decelerating the rotation of the roller 2 when the yarn supplying speed to the mandrel 6 is decelerated.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003197483-A (JP)
Title: Pressure relief valve
Inventor: ABE SHINJI
IPC: H01M2/12
Filed: 2001-12-26
Abstract: <P>PROBLEM TO BE SOLVED: To provide a pressure relief valve which is capable of restraining a filling liquid from vaporizing, foreign objects from penetrating into a case from outside, and surely functioning as a pressure release function, when an inner pressure rises in the case of a capacitor or a cell.  <P>SOLUTION: A sealing plate 3 is fitted to the opening of the case of a capacitor or a cell, and a valve seat 3b, where a valve hole 3a is provided to its inner periphery and a valve mounting recess 3c which extends outwardly from its outer periphery are provided to the sealing plate 3. A valve element 8A is composed of a stationary plate 10, engaged with the valve mounting recess 3c by a leaf spring 11 and a seal lip 20 which is provided to the stationary plate 10 in one piece, brought into close contact with the valve seat 3b with a prescribed area pressure, and opened by a prescribed inner pressure inside a pressure vessel. A large number of slits 12 provided to the leaf spring 11 function as a ventilation path, when the seal lip 20 is opened.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002259133-A (JP)
Title: Uninstallation control device
Inventor: KUSUDO TADAO
IPC: G06F13/10
Filed: 2001-12-26
Abstract: PROBLEM TO BE SOLVED: To provide a control device for controlling the unintallation processing of device controlling software so that the device ca be used again without waiting for a long time only by immediately reloading the device when a user unintentionally detaches the device. SOLUTION: When a detection part 11 detects the detachment of the device, a judgment part 14 allows a time counting part 12 to start the counting of elapsed time, and when he elapsed time reaches a prescribed time, the uninstallation processing of the device controlling software is started. In addition, the judgment part 14 dividedly executes the uninstallation processing on a plurality of stages in accordance with the elapsed time, and when the detection part 11 detects the reloading of the device before the completion of processing, the uninstallation processing is stopped and the controlling software and its related information are restored to states held before starting the uninstallation processing.
Patent JP-2003196366-A (JP)
Title: Storage state management device
Inventor: OGAWA MASAHIDE
IPC: G06Q10/00
Filed: 2001-12-27
Abstract: <P>PROBLEM TO BE SOLVED: To enable a customer to grasp the state of an article the storage of which is requested to a shop without actually visiting the store.  <P>SOLUTION: A headquarter server 1 has a bottle information file 8 for storing the storage state of the article the storage of which is requested. In addition, collation of the article the storage of which is requested from a cellular telephone 6, etc., via the Internet 4 is accepted. Then, the storage state of the article the collation of which is accepted is acquired from storage information by the bottle information file 8 and response is made to the cellular telephone 6, etc., via the Internet 4.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003190472-A (JP)
Title: Game machine
Inventor: WATANABE HIROO
IPC: A63F7/02
Filed: 2001-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To drastically refresh amusement by dispelling monotony in a game machine such as a pachinko game machine.  <P>SOLUTION: An operation port 3 and a big prize-winning port 4 are arranged on the game board 2 of the pachinko game machine 1. A display device 13 including a display part 13a is incorporated at the center of the game board 2. The pattern string of the display part 13a is constituted of a plurality of patterns. A controller 24 performs lottery by the movement of a game ball 5 and decides whether a special game state with prescribed profit is derived based on the result of lottery or not. When the special game state is derived the succeeding game mode is changed-over between a normal mode and a special mode with a higher value. When a ready-for-winning state is derived in a first specified preliminary state in the special mode, the pattern is established and stopped in the first specified state or established and stopped in another state for prescribed profit.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003204567-A (JP)
Title: Phone exchange
Inventor: KAWAUCHI YOSHIHIRO
IPC: H04Q3/58
Filed: 2001-12-28
Abstract: <P>PROBLEM TO BE SOLVED: To revise a system configuration through required minimum revision of hardware.  <P>SOLUTION: When the system is revised, a CPU 14 particularizes system information attendant on the system revision stored in a RAM 16 on the basis of contents of a DbConfig table stored in a ROM 15 and in response to the system revision and executes exchange processing between, e.g. a revised number of extension terminals 2 or between the extension terminal 2 and a trunk line L on the basis of the system information.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003502143-A (JP)
IPC: B01D53/81
Filed: 2000-06-16
Abstract: Described is a method and apparatus for desulphurisation of exhaust gases from a cement making plant by bonding gaseous sulphur dioxide to calcium-containing cement raw meal which is extracted from the calcination stage (4) of the plant and subsequently brought into contact with the exhaust gases as a sulphur-absorbing reactant. The specific method slaking and grinding the extracted raw meal prior to it being brought into contact with the exhaust gases. By this method and apparatus an improvement of the thermal economy, is obtained by reducing the quantity of raw meal required for the desulphurisation process. This is ascribable to the fact that by subjecting the raw meal to slaking and grinding, the fineness of the raw meal will be improved, thereby enhancing the efficiency of the desulphurisation process.
Patent JP-2003505025-A (JP)
IPC: C12N1/19
Filed: 2000-07-20
Abstract: The present invention relates to methods for displaying (poly)peptides/proteins on the surface of bacteriophage particles by attaching the (poly)peptide/proteins via disulfide bonds.
Patent JP-2003505849-A (JP)
Title: 有機エレクトロルミネセンス装置
IPC: H01L51/52
Filed: 2000-07-21
Abstract: (57)【要約】
本発明は、装置からの全反射率を減らす光干渉部材を有する新規の有機エレクトロルミネセンス装置を提供する。本発明は、アノードとエレクトロルミネセンス層とカソードとを有する電流駆動式有機ディスプレイに特に適しており、そこでは、少なくとも１つの光干渉部材が該２層の間に置かれており、その結果、該ディスプレイを励磁するために必要な電気回路の一部を形成する。該光干渉部材は、少なくとも一部の該ディスプレイに入射する周辺光の弱め合う光学的干渉を引き起こす厚さを有するように選択される。加うるに、該光干渉部材の材料は、該アノード、該カソード、および該エレクトロルミネセンス層に関係した該光干渉部材の位置に応じて、該エレクトロルミネセンス層の最も高い被占有分子軌道または最も低い未占有分子軌道に対し互換性のある仕事関数を有するように選択される。材料を適切に選択することで、本装置を通る適当な電流の流れを確実にすることができ、その結果、該有機エレクトロルミネセンス層の電気的破壊の恐れを減らし、また、本装置の全エネルギー効率を改善する。
Patent JP-2003506119-A (JP)
Title: 可動ｒｆコイルの位置によって制御される磁気共鳴イメージングのための装置、方法、及びコイル装置
IPC: G01R33/32
Filed: 2000-07-20
Abstract: (57)【要約】
本発明は、患者のインタラクティブなＭＲ検査を可能とする磁気共鳴（ＭＲ）イメージング方法、ＭＲ装置、及び無線周波（ＲＦ）受信コイル装置を提供することを目的とする。特に、本発明はＭＲ検査中に患者を横切って動かされうる可動ＲＦコイルによってＭＲ画像を発生する手段を含む。ＭＲ装置は、可動ＲＦコイルの現在の位置及び向きを検出する位置検出システムを含む。コイルは手で動かすために手持ち式であってもよく、又は制御された移動のために機械的なマニピュレータに取り付けられてもよい。イメージング方法は、可動ＲＦコイルの現在の３次元の位置及び３次元の向きに対して決定される３次元の領域中で核磁化を励起するために傾斜磁場及びＲＦパルスシーケンスを決定し発生する。本発明は、操作者による操作に都合が良いような形態及び寸法とされる送受信用の可動ＲＦコイルを含む。望ましい可動ＲＦコイル組立体は、特定の位置検出システムと相互作用するために必要なマーカ、再構成された画像をリアルタイムで表示する表示手段、及び操作者がＭＲ装置を制御する信号を入力するための制御手段とを含む。本発明はまた、プログラム可能なＭＲ装置に本発明による発明を実行させるよう制御するための記録されたプログラム命令を有する担体媒体を含む。
Patent JP-2003508315-A (JP)
Title: カーボネーター収納用凹部付きコールドプレート
IPC: F25C5/18
Filed: 2000-08-31
Abstract: (57)【要約】
飲料デイスペンサーと共に使用するための改良されたコールドプレート。該飲料デイスペンサーは氷容器とカーボネーターユニットとを有する。該コールドプレート（１４０）は該氷容器の下に位置付けられる。該コールドプレートは該氷容器と直接接触する第１面（１１０）を有する。該コールドプレートは更に、該カーボネーターユニットがそれとの密接な接触のためにその中に直接位置付けられるよう凹型中央部分（１６０）を有する第２面を備える。
Patent JP-2003514145-A (JP)
Title: レール掃除方法およびその装置
IPC: B08B7/00
Filed: 2000-10-30
Abstract: (57)【要約】
汚染物の少なくとも一部を破壊するように、高密度パルス状レーザビームを発生させ、レーザビームをレール表面上に向けさせることを含む、レール表面から汚染物を除去することによって、レールを掃除する方法。汚染物が直接気化されることによって破壊されるように、レーザビームのパラメータが選択されることが望ましい。汚染物の温度を、少なくとも6000℃まで上昇することができる。レール表面から汚染物を除去することによってレールを掃除する装置は、汚染物の少なくとも一部を破壊するように、高密度パルス状レーザビームを発生させる手段と、レール表面上にレーザビームを向けさせる手段とを備える。汚染物が直接気化されることによって破壊されるように、装置はレーザビームのパラメータを選択する手段を有することが望ましい。汚染物の温度を、少なくとも6000℃まで上昇することができる。
Patent JP-2003514538-A (JP)
Title: 哺乳動物毒物学的反応マーカー
IPC: C12Q1/68
Filed: 2000-11-16
Abstract: (57)【要約】
本発明は、複数の核酸分子およびタンパク質分子を含む哺乳動物核酸分子およびタンパク質分子に関連する。この哺乳動物核酸分子をマイクロアレイのハイブリダイズ可能なアレイエレメントに用いて、代謝反応および毒物反応の検出を含む診断および治療、並びに薬剤機構の作用のモニタリングをすることが可能である。このタンパク質分子を医薬組成物として用いることもできる。また、本発明は、化合物のスクリーニング方法、並びに有毒化合物または分子を示唆する代謝反応の治療法に関連する。
Patent JP-2003514954-A (JP)
IPC: C10M137/10
Filed: 2000-10-20
Abstract: Compounds and lubricant compositions are disclosed that comprise a substituted linear thiourea of the structurewherein R1, R2, and R4 are independently selected from the group consisting of alkyl, alkenyl, aryl, alkaryl, aralkyl, and hydrogen; R3 is selected from the group consisting of alkyl, alkenyl, and combinations thereof; X is selected from the group consisting of (i) methylene, if, and only if, R3 is alkenyl, (ii) oxygen, and (iii) sulfur; and A is selected from the group consisting of alkylene and aryl.
Patent JP-2003514885-A (JP)
IPC: B01D1/22
Filed: 2000-11-27
Abstract: The invention relates to a method and a device for the purification of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C., which further has approximately 275 g carboxylate ions/l or less, preferably 250 g carboxylate ions/l or less, and preferably less than 1% by weight ionic impurities, calculated on the basis of the total solution. In particular, the invention relates to a method and a device for the continuous purification and concentration, on an industrial scale, of an aqueous solution of an organic acid having a boiling point at atmospheric pressure of less than 450° C. According to the method, this solution is subjected to two or more distillation steps, the first distillation step being carried out at a temperature of from 80° to 150° C. and a pressure of from 50 to 250 mbar, and the second distillation step being carried out at a temperature of from 80° to 200° C. and a pressure of from 0.01 to 50 mbar.
Patent JP-2003515080-A (JP)
Title: 活物質を含むバルブ
IPC: F16K31/00
Filed: 2000-11-22
Abstract: (57)【要約】
流体バルブであり、第１の方向に移動することで開口部を通じての流体の流れを制御するように配置されたバルブ部材（６）と、前記バルブ部材（６）の移動を制御するための電気駆動可能な手段（１ａ，１ｂ）とを有し、特徴となる点は、電気駆動可能手段（１ａ，１ｂ）がベンダー要素（１ａ）を１以上有し、当該ベンダー要素は前記第１の方向に配置されているが前記第１の方向を横切る向きに曲がるということ、そして、バルブ部材は成形面を備え、当該成形面がベンダーの一端（３ａ）にかみ合い、それによってバルブ部材の位置が制御されるということ、であるような流体バルブ。
Patent JP-2003516827-A (JP)
IPC: A61M39/02
Filed: 2000-11-02
Abstract: The invention relates to a single-needle port (1) which can be subcutaneously implanted and used for haemodialysis. The port opening (2) of said port can be sealed using a closure element after the haemodialysis has been performed and can be re-opened for renewed treatment by inserting an aspirating cannula. The closure element is embodied by a ring (3) which encircles the port opening (2) and by a closure ball (4), whose diameter is greater than that of the port opening (2). Said ball rests against a sealing surface (5) of the ring (3) from the inside of the port in order to seal said port opening and can be displaced from said position in order to release the lumen of the port opening by an aspirating cannula which can be guided into said opening (2). At least one of the components of the closure elements consists of permanently magnetic material and the other component consists of a ferromagnetic material or of a permanently magnetic material of opposing polarity.
Patent JP-2003517534-A (JP)
IPC: F04B53/14
Filed: 2000-12-08
Abstract: The invention relates to a piston engine which is essentially comprised of an engine shaft and a set of modules, each of which comprises a cylinder and a piston powered by the engine shaft in the cylinder, each module resulting in vibratory excitation of the engine at a determined fundamental frequency. Rather than introducing phase differences between the various vibratory excitations, as is the case in prior art, the invention introduces a frequency offset between the fundamental frequencies thereof in order to avoid a high-amplitude vibration at a common excitation frequency, arising from the spectral spread thus obtained.
Patent JP-2003518569-A (JP)
IPC: B01D37/02
Filed: 2000-12-19
Abstract: A method of draining water from low-consistency water-fiber suspensions, in which the water-fiber suspension is fed to a filtering surface comprising holes. The rougher fibers are first separated from the water-fiber suspension and fed to the filtering surface to form a separate filtering layer and the water-fiber suspension is led to flow through the filtering layer formed by the rougher fibers.
Patent JP-2003520141-A (JP)
IPC: B29L22/00
Filed: 2001-01-24
Abstract: A process and apparatus for forming a leakproof plastic container by completely ejecting from a mold and then transferring to a cap closing station. The process includes the steps of injecting a molten plastic material into a mold cavity and then opening the mold and ejecting the body and cap completely from the mold. Subsequently, the body and cap are gravity fed to a collection device and then transferred to a cap closing station. In the cap closing station, the body and cap are sealed before the material is fully set to form a leakproof seal.
Patent JP-2003522635-A (JP)
Title: 混合装置
IPC: B01F15/04
Filed: 2001-02-12
Abstract: (57)【要約】
複数の材料、好ましくは粉末、特に医薬組成物の成分から、必要な均質性を有する混合物を調製する混合装置であって、非回転混合容器（７）と、前記材料を前記容器（７）内へ供給する少なくとも１つの供給機構と、前記混合物を調合する前記容器（７）内の攪拌手段（３１）と、前記容器（７）内の１つ又は複数の場所で、調合されている混合物の均質性をインライン監視する少なくとも１つの測定器（２３）とを備え、前記少なくとも１つの測定器（２３）は、入力放射線を前記容器（７）内に導くユニットと、前記入力放射線が前記容器（７）内の前記材料と相互作用することによって生成される出力放射線を検出する少なくとも１つの検出ユニット（４５）とを備える。
Patent JP-2003528839-A (JP)
IPC: C07C29/74
Filed: 2001-03-23
Abstract: In a process for finishing neopentyl glycol by cooling, crystallizing and comminuting a neopentyl glycol melt and subsequent packing of the resulting neopentyl glycol particles in storage or transport containers, the melt is cooled at the commencement of cooling for at least 1/10 minutes without use of a coolant or with use of a coolant having a temperature in the range from 50 to 120° C. and the product is packed at a temperature below 30° C.
Patent JP-2003530577-A (JP)
Title: 有害物質貯蔵用装置
IPC: G21F5/008
Filed: 2001-04-11
Abstract: (57)【要約】
有害物質、特に放射性の使用済み核原子炉燃料などの発熱性の有害物質を貯蔵するための装置（１０）は、有害物質のための軸方向に細長い貯蔵空間（１８）を有する実質的に円筒形の強化されたコンクリート体（１２）を含む。両端が開いた円筒形の中央通路（１１）は装置（１０）を通じて軸方向に延びる。貯蔵空間を形成する複数の円筒形の貯蔵区画（１８）は中央通路（１１）のまわりに、これに対して平行かつこれから径方向に間隔をおいて配置される。貯蔵区画（１８）から内方向へと運搬される熱は、中央通路（１１）の中で上方向に流れる空気または水によって装置から放散される。
Patent JP-2002305320-A (JP)
Title: Photoelectric conversion device
Inventor: KOZUKA HIRAKI
IPC: H04N5/374
Filed: 2002-01-08
Abstract: PROBLEM TO BE SOLVED: To provide a photoelectric conversion device having a CMOS constant- current source circuit which can operate normally at the time of turning on the power supply even when the device is irradiated with light. SOLUTION: In this photoelectric conversion device, a light receiving section which performs photoelectric conversion and a power source circuit are formed in the same semiconductor substrate. This device has a photodiode connected to the terminal of a transistor contained in the power source circuit. The terminal of the transistor contains a second-conductivity semiconductor region formed in a first-conductivity semiconductor region. In addition, the photodiode contains a first conductivity semiconductor region and a second-conductivity semiconductor region. The second-conductivity semiconductor region contained in the terminal of the transistor is connected to the first-conductivity semiconductor region of the photodiode.
Patent JP-2003202001-A (JP)
Title: Variable capacity type fluid device and working machinery furnished with same fluid device
Inventor: ISHIZAKI NAOKI
IPC: F15B11/00
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide a variable capacity type fluid device designed to realize miniaturization and cost reduction of the device and to improve capacity characteristics in simple structure, and also to provide a working machinery.  <P>SOLUTION: This variable capacity type fluid device is devised to continuously change discharge flow rate in both directions between the suction side and the discharge side by a tilting angle of a both-way swinging variable capacity pump 2 arranged in parallel with a fixed capacity pump 3. The total discharge flow rate discharged from the variable capacity pump 2 and the fixed capacity pump 3 is continuously increased and decreased by continuously changing the discharge flow rate along both of the suction side and the discharge side of the variable capacity pump 2, the cost is extensively reduced than that for a hydraulic circuit furnished with one unit of a large variable capacity pump.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003207312-A (JP)
Title: Rail wear inspecting vehicle for trolley conveyor
Inventor: KOBAYASHI HEIHACHI
IPC: G01B11/00
Filed: 2002-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To provide a rail wear inspecting vehicle for a trolley conveyor, which is capable of automatically and accurately locating the worn part on the uppersurface of a lower flange of a free rail and inspecting the degree of wear.  <P>SOLUTION: The free rail 13 of the trolley conveyor is composed of a left and a right rail member 41 having a channel section and arranged so that their openings are facing each other. The rail wear inspecting vehicle is equipped with a body 401 having a left and a right running wheel 431 rolling on the uppersurfaces of the lower flanges 53 of the two rail members 41, a first 451 and a second light projector 452 installed on the body, and a first 461 and a second camera 462. The first light projector 451 projects a band of photo-beams onto the uppersurfaces of the lower flanges 53 of the two rail members 41 in such a way as traversing, and the first camera 461 receives the image of this band of photo-beams. The second light projector 452 projects a band of light beams onto the uppersurfaces of the so as to traverse lower flanges 53 of the two rail members 41, and the image of the band of photo- beams is received by the second camera 462.  <P>COPYRIGHT: (C)2003,JPO