baber/WOPTO huggingface dataset:
Patent JP-2003502654-A (JP)
IPC: F16K99/00
Filed: 2000-06-21
Abstract: A valve ( 2 ), crossed by at least one channel ( 3 ), allowing to direct at least one fluid (F 5 ) displaced by a transfer device within a test sample card ( 1 ), the card ( 1 ) featuring two faces ( 4 and 5 ) connected to one another ( 4 ) ( 5 ) by an edge ( 6 ). A card equipped with a device allowing several cards equipped with such valves to be implemented is made up of a flexible film ( 7 ), and/or which can be distorted, part of which is fixed to at least one of the faces ( 4 and/or 5 ) of said card ( 1 ) on the one hand, and a film compression device ( 7 ), which can be deactivated on the other hand. In addition, securing is carried out on at least one of the plane faces ( 4 and/or 5 ), for example, by a securing device located at the level of a recession ( 9 ) peripheral to the valve ( 2 ), such as a groove ( 9 ). The valve is particularly applicable in the field of diagnosis.
Patent JP-2003503117-A (JP)
Title: 医薬製剤をエアロゾル化するためのシステム及び方法
IPC: A61M16/20
Filed: 2000-06-29
Abstract: (57)【要約】
医薬製剤をエアロゾル化するためのシステム及び方法が提供される。１つの方法によれば、呼吸気は、吸入を試みるときに、肺へ流れることを防止される。次に、呼吸気は、突然に肺へ流れることを許容される。次に、呼吸気の流れは、受容器から医薬製剤を抽出し、呼吸気に流れ内に医薬製剤を入れ、エアロゾルを形成させるために使用され得る。
Patent JP-2003503211-A (JP)
IPC: B22C9/24
Filed: 2000-06-30
Abstract: The use of green sand is eliminated by replacing green sand molds with all core sand assemblies that provide, during casting, both the internal and external surfaces of a casting, such as a cylinder head or engine block. In the process, a mold is formed from the same core sand that is used to form the core elements defining the internal passageways of the casting. A mold-core carrier is constructed with tapered sides that hold the assembled mold and core elements together during pouring of the molten iron alloy into the mold-core assembly and the cooling period to form the casting. Although the carrier sides can use a refractory liner, preferably the sides are made of replaceable sheet metal backed by an open structural framework to enhance cooling of the casting. After the casting is formed, the core sand from both the mold elements and the core elements is recovered, and may recycled and processed to form further mold elements or core elements or both.
Patent JP-2003507197-A (JP)
Title: 電解加工のための方法と工具
IPC: B23H3/04
Filed: 2000-07-06
Abstract: (57)【要約】
【課題】  異なるレベルの金属除去を同時に行うために、電解加工法に使用するための電解加工機械を開示する。
【解決手段】  電解加工機械は少なくとも２つの電極を含み、それぞれの電極は、絶縁被覆で部分的に被覆された外表面を有する導電性円筒体を含む。絶縁被覆は、被加工物内に予め穿孔された孔の内表面上に形成される隆起区域を形成するパターンになっており、電極の内の少なくとも１つは他とは異なる絶縁被覆パターンを有する。
Patent JP-2003507948-A (JP)
Title: データを複数ネットワークに選択的に転送するための方法およびネットワークノード
IPC: H04Q3/66
Filed: 2000-08-09
Abstract: (57)【要約】
発明の方法とネットワークノードによれば、少なくとも第１の回線交換網（ＩＳＤＮ）および／または第１のパケット交換網から、少なくとも第２の回線交換網（ＩＳＤＮ）および少なくとも第２のパケット交換網を含む複数のネットワークへデータを転送することができる。呼ルーティングモジュール（ＣＲＭ）は第１または第２のネットワークの着信サービス呼に関するセットアップ情報を所定のルーティングプロフィールと比較して、サービス呼の経路として指定されるネットワークにおけるアドレスまたはキャリア（ｎ）を選択する。その経路選択結果にしたがって、回線交換機（ＣＳ）は第１または第２の回線交換網から着信するサービス呼を、第２または第１の回線交換網に切り換えるか、あるいはゲートウェイ（ＧＷ）を経由する第１または第２のパケット交換網に切り換える。パケットルーティングユニット（ＰＲＵ）は第１または第２のパケット交換網から着信するサービス呼のデータパケットに対して、第２または第１のパケット交換網への経路を指定するか、あるいはゲートウェイ（ＧＷ）および回線交換機（ＣＳ）を経由する第１または第２の回線交換網への経路を指定する。
Patent JP-2003509507-A (JP)
Title: 液晶化合物
IPC: C07D307/84
Filed: 2000-09-15
Abstract: (57)【要約】
下記一般式（Ｉ）の液晶化合物であって、
【化１】
 式中、ＸはＯ、Ｓ又はＳｅであり、かつＲ 1 、Ｒ 2 、Ｒ 3 、Ｒ 4 、ｍ、ｎ、ｐ及びｑは、本出願で特定される液晶化合物。前記化合物を含んでなる液晶装置も請求される。
Patent JP-2003516520-A (JP)
Title: 媒体の瞬時温度を決定する方法
IPC: G01N27/04
Filed: 2000-08-26
Abstract: (57)【要約】
本発明は媒体の瞬時温度を決定する方法に関し、ここでこの媒体は、少なくとも一時的に一定の既知の温度に電気的に加熱可能な素子を包囲する。ここではこの素子に供給される加熱電力から媒体の瞬時温度を決定する。
Patent JP-2003512515-A (JP)
IPC: C07F7/00
Filed: 2000-10-20
Abstract: This description addresses a process for the preparation of polyolefins from one or more olefinic monomers comprising combining under polymerization conditions said olefins with the product of combining i) an organometallic catalyst compound and ii) a cocatalyst complex comprising a trialkylsilyl-substituted carbenium cation and a suitable noncoordinating or weakly coordinating anion. These complexes exhibit good solubility in aliphatic solvents such that use in aliphatic solution based polymerization reaction processes can be conducted without the use of aromatic solvents or co-solvents and without the need for slurry means of introduction into chemical reaction environments. High number-average molecular weight polymers and copolymers at high rates of productivity were observed from the use of metallocene catalysts complexes when activated with [(3, 5-(Et3Si)2Ph)3C]<+> [(C6F5) B]<-> and used in a hexane-based solution polymerization.
Patent JP-2003515162-A (JP)
Title: 顕微鏡内蛍光現象の把握方法
IPC: G01N21/64
Filed: 2000-11-22
Abstract: (57)【要約】
【課題】共焦点型および２光子型蛍光顕微鏡測定において顕微鏡内の蛍光現象を把握するための方法
【解決手段】試料が、変調および／またはパルス化したレーザ光源によって照射され、蛍光検波が、検波器の少なくとも二種類の位相位置で行われる。
Patent JP-2003524564-A (JP)
IPC: E04G21/16
Filed: 2000-11-18
Abstract: The invention relates to a unit ( 10 ) for the production of track elements ( 32 ), comprising a number of retaining devices ( 14 ), arranged serially in the longitudinal direction of the unit. Said units each comprise a base element ( 20 ), which can be moved on wheels ( 34 ) and at least one support device ( 28 ), connected at least indirectly thereto. The above is arranged, such that a section ( 30, 172 ) of a pre-assembled track element ( 32 ) may be placed thereon, in the alignment which essentially corresponds to that of the most recent fitting position. Furthermore, the above may be positionally adjusted relative to the base element ( 20 ).
Patent JP-2003520325-A (JP)
Title: ピストン内燃機関のための直接制御される燃料噴射装置
IPC: F02M45/00
Filed: 2000-12-15
Abstract: (57)【要約】
本発明は、加圧室（１０）を備え、この加圧室内に、噴射ノズル（１３）を閉鎖するノズルニードル（９）が案内されており、このノズルニードルが、圧力を作用させた際に噴射すべき燃料によって開放位置へと運動可能であり、その際、加圧室（１０）が、接続通路（６）を介して制御部分（７）と接続しており、この制御部分が弁室（２１）を備え、この弁室内へと、接続通路（６）が一方で、また燃料供給装置（４）と接続された高圧通路（８）が他方で接合し、かつこの弁室内で、ピストンシステムとして作用する弁体（２３）が案内されており、この弁体が、弁バネ（２４）によって弁座（２２）上で閉鎖位置に保持されるように構成されている、噴射ノズル（１３）を有するノズル部分（５）と、弁体（２３）と作用接続しており、かつこの弁体を、作動させる際に開放方向へと運動させ、高圧通路（８）から接続通路（６）内への貫流を開放するように構成されているアクチュエータ（２０）とを有する、ピストン内燃機関のための燃料噴射装置に関する。
Patent JP-2003521147-A (JP)
Title: 電力線通信ネットワークに於けるデータの分離方法
IPC: H04B3/54
Filed: 2001-01-19
Abstract: (57)【要約】
電力線通信システムでデータを分離する。共通の配電変圧器から配電される電力を複数の加入者が受電するが、電力配送の補足としてデータ通信を行うためにそれらの支線が使用される時それらの支線をお互いから分離することが望ましい。支線のこの分離は該配電変圧器で中央化された方法か、代わりに各加入者の構内で分布された方法かで実施される。これらの実施はローパスフイルター（電力を通すがデータを阻止する）と電力線通信ルーター又は電力線通信レピーターとを使用して行われる。
Patent JP-2003520913-A (JP)
IPC: B65D65/42
Filed: 2001-01-26
Abstract: The invention provides a low density paperboard material and associated method for use in producing an insulated container, and is especially well-suited for making cups. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb/3 MSF/mil (0.38 to about 0.64 g/cm3), a relatively high caliper ranging from about 24 to about 35 mil (609 to about 889 μm), and an internal bond strength of at least about 80×10−3 ft-lbf (168×10−3 kj/m2), preferably at least 100×10−3 lft-lbf (210×10−3 kj/m2). For applications such as cups the material is also coated on one or both sides with a barrier coating, preferably low density polyethylene, to limit liquid penetration into the web. The low density paperboard material of the invention is convertible for manufacture of containers, particularly cups, and exhibits insulative properties comparable to higher cost materials conventionally used to make cups. Also, the surface of the low density board may have a Sheffield smoothness of 300 SU or greater compared with the surface smoothness of 160 to 200 SU for conventional cupstock, the latter having been thought necessary for adequate print quality. However, it has been found that the low density board exhibits good printability on flexo printing machines despite its relatively rough surface, which is surprising and bonus effect realized along with the insulative and other properties of the board.
Patent JP-2003522090-A (JP)
IPC: B01D53/04
Filed: 2001-02-02
Abstract: A method for the recovery or separation of sulfur oxyfluorides from gas mixtures, in which the gas mixture passes through at least one adsorption stage or membrane stage containing or consisting of zeolites with a modulus >10. The sulfur oxyfluorides fixed to the adsorbent may be made available for use after desorption. The sulfur oxyfluorides enriched through the membrane can be re-used directly.
Patent JP-2003524894-A (JP)
Title: 変圧器クランプバー用の漏洩磁束保護装置
IPC: H01F27/38
Filed: 2001-02-23
Abstract: (57)【要約】
クランプバーに伝導される変圧器または同様のものの漏洩磁束を減少するための装置に関し、変圧器は、ヨーク２によってコアが少なくとも一つのループを形成するように互いに連結された少なくとも二つの極３を含む積層された磁気コア、ヨーク２の側面に設置され、コア層を一緒に加圧するクランプバー１、および少なくとも一つの極３に設置された巻線４を含み、それによりコアの外側を通りかつ巻線を通る電流と関連した磁束の一部は漏洩磁束であり、また巻線４を設けられた少なくとも一つの変圧器用の漏洩磁束案内１０〜１７を含み、漏洩磁束案内は、それらが巻線においてクランプバーの一部を実質的にカバーするようにまたコアに対する漏洩磁束の磁気的接続がクランプバーに対する磁気的接続より良好であるように、クランプバー１に固定されるかまたはクランプバーに関連する障害物２０，３０がない点においてそれに接続され、それにより漏洩磁束案内は伝導される漏洩磁束を主としてコアに指向しクランプバーに対する漏洩磁束の伝導を減少する。
Patent JP-2003527382-A (JP)
Title: 無水マレイン酸の製造方法
IPC: B01J27/28
Filed: 2001-03-06
Abstract: (57)【要約】
少なくとも４個の炭素原子を有する炭化水素を、酸素含有ガスにより揮発性リン化合物の存在下に、バナジウム、リンおよび酸素を含有する触媒を使用して、少なくとも２つの連続する冷却される反応帯域を有する管束反応器ユニット中で、不均一系触媒により気相酸化することにより無水マレイン酸を製造する方法において、第一の反応帯域の温度が３５０〜４５０℃であり、かつ第二およびその後の反応帯域の温度が３５０〜４８０℃であり、その際、もっとも熱い反応帯域ともっとも冷たい反応帯域の温度差は少なくとも２℃である。
Patent JP-2004508292-A (JP)
IPC: C07H11/00
Filed: 2001-05-18
Abstract: Methods for treating infections or autoimmune disease or an allergic condition using monophosphonyl lipid 4 or a mimetic thereof (an aminoalkyl glucosaminide phosphate).
Patent JP-2003206109-A (JP)
Title: Ozone generator
Inventor: TABATA YOICHIRO
IPC: C01B13/11
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide a structure of a laminated ozone generator which is inexpensive and has satisfactory quality and wherein raw material gas between discharge units can be easily and reliably shielded, positioning and supporting of a plurality, of electrode groups (a plurality of the discharge units) such that the groups can be reliably and plurally laminated can be easily performed by suppressing fluctuation of a gap length (d) of a discharge space.  <P>SOLUTION: A discharge cell 33 wherein two discharge units are laminated is constituted by disposing two dielectric electrodes 23a, each of which is integrally formed with a dielectric 24, back to back with each other and disposing two ground electrodes 22 oppositely to each other on the both sides thereof via discharge spaces 25 each having the prescribed gap length. Three electrode connecting bars 31 each having a prescribed length are disposed at even intervals in a peripheral direction between the two ground electrodes 22 at the peripheral parts thereof to connect the ground electrodes by maintaining a prescribed dimension between them.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003204376-A (JP)
Title: Mobile phone terminal
Inventor: MINEMURA TAKASHI
IPC: H04M1/00
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To enable an operator to carry out calling in a state of a better quality of a wireless line.  <P>SOLUTION: An LED 19 and LED 20 are installed in a place where the operator can view them when using the terminal for calling. A base band part 4 determines quality of the wireless line at a multiplicity of steps. The base band part 4 lets the LED 19 and 20 emit light in a pattern according to the determined quality of the wireless line.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003203109-A (JP)
Title: Data management unit, data processing unit, data management system, data processing method, recording medium, and program
Inventor: TAKEYA TAKASHI
IPC: G06Q50/28
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To free distributors from the labor of manual input and also from human errors attributable to manual input by enabling the costs of distribution processes to be automatically calculated every time one is over.  <P>SOLUTION: A data management unit 10 has a work type setting means for setting the types of distribution work involving due-out merchandise at distribution centers A, B, C and a cost calculation means for calculating the costs payable to the centers A, B, C for the types of the distribution work set for them by the work type setting means.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003203365-A (JP)
Title: Optical information recording and reproducing device
Inventor: KATSUHARA WATARU
IPC: G11B21/10
Filed: 2002-01-08
Abstract: <P>PROBLEM TO BE SOLVED: To provide an optical information recording and reproducing device in which the changeover timing is optimized in accordance with the changeover state of the bands of a servo signal circuit.  <P>SOLUTION: The optical information recording and reproducing device is furnished with a means for detecting the moving speed or moving distance of a light spot from the period of a zero cross point of a track traversing signal for control, the servo signal circuit for obtaining the servo signal in a wide band or a narrow band for controlling the convergence of the light spot to the specified state, and a control means for controlling the change over of the band of the servo signal circuit. The control means is arranged so that the instruction to change over the band from the narrow band to the wide band is given to the servo signal circuit 5 (S101) directly before or simultaneously or directly after the start of the moving operation of the light spot, and the instruction to change over the band from the narrow band to the wide band is given (S104) to the servo signal circuit directly before (S103) the light spot is moved and come up to an objective track.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003202194-A (JP)
Title: Heat exchanger
Inventor: SHIBATA YUTAKA
IPC: F28F1/00
Filed: 2002-01-10
Abstract: <P>PROBLEM TO BE SOLVED: To make handling of a heat exchanger easy and to improve performance of heat transfer from a coolant passage to a water passage.  <P>SOLUTION: This heat exchanger is provided with a core tube 1 constructing a water passage 2 and a plurality of fine tubes 3, 3 provided on an inner peripheral surface of the core tube 1 and constructing coolant passages 4, 4 having smaller passage section area than passage section area of the water passage 2. The fine tubes 3, 3 is arranged in parallel with a longitudinal direction along an inner wall of the core tube 1 to dismiss special care of handling which is required for a conventional structure and to improve performance of heat transfer.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002250728-A (JP)
Title: Reagent for immunoreactive assay and immunoreactive assay
Inventor: SHINODA JUNICHIRO
IPC: G01N33/543
Filed: 2002-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a reagent for immunoassay and an immunoreactive assay in which nonspecific reactions other than an antigen antibody reaction are suppressed and a high reaction accelerating effect is exhibited. SOLUTION: The reagent for immunoreactive assay contains an unaggregated nonsoluble organic polymer carrier carrying an antibody or an antigen for a substance being measured, i.e., an antigen or an antibody, and polyvinyl pyrrolidone.
Patent JP-2003205053-A (JP)
Title: Golf club shaft evaluation system
Inventor: HASEGAWA HIROSHI
IPC: A63B53/00
Filed: 2002-01-15
Abstract: <P>PROBLEM TO BE SOLVED: To objectively determine a shaft optimal to a golfer by evaluating the dynamic behavior of a shaft including the torsional behavior of a golf club.  <P>SOLUTION: Torsional strain generated at the shaft during swinging the golf club is measured to evaluate the dynamic behavior of the shaft including the torsional behavior of the shaft by data histeresis of the measured torsional strain. In particular, it is desirable to measure the torsional strain generated on the tip side of the shaft and to evaluate the dynamic behavior of the shaft by waveform data D1 to D4 of the torsional strain before impact.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003217243-A (JP)
Title: Information recording and/or reproducing device, and method for saving power therefor
Inventor: TAKAMATSU KOHEI
IPC: G11B19/00
Filed: 2002-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide an information recording and/or reproducing device capable of reducing power consumption in the course of track follow-up operation, in seek operation, and in spindle motor start, and a method for saving power therefor, with respect to an information recording and/or reproducing device for recording information on a medium and/or for reproducing the information from the medium, and a method for saving power therefor.  <P>SOLUTION: The information recording and/or reproducing device reproduces servo information previously recorded on the medium and executes the track follow up operation based on the servo information. The frequency of tack follow up control in the course of the track follow up operation is reduced. Power saving is done in the course of the seek operation except in reproducing the servo information. In addition, the power saving is done until a spindle motor has stationary revolving speed.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003205927-A (JP)
Title: Metallic bottle can and its manufacturing method
Inventor: SHIRASAWA TAKETO
IPC: B21D51/30
Filed: 2002-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a paint coated metallic bottle can having a base coat without damaging its outer appearance and applying no bad influence against a trimming tool.  <P>SOLUTION: This bottle can is made such that when a curl part 15 is formed at an upper part of a threaded portion 14 of a can base body 11, a base coat layer 21 coated at the can base body 11 is hidden inside the curl part 15 and is not seen from outside the curl part 15. That is, when the can base body 11 is coated with paint, the base coat layer 21 is applied on the surface of the can base body 11 at a part spaced apart by a specified size from its upper end. When an opening fitting part 12 is formed at the can base body 11 through a neck-in processing and both the threaded portion 14 and the curl part 15 are formed by a thread machining process, an upper end edge 21a of the base coated layer 21 enters the inside of the curl part 15 so as to prevent it from being seen from outside.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003206706-A (JP)
Title: Power generation system
Inventor: MIYATA TADASHI
IPC: F02C6/18
Filed: 2002-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a power generation system that can efficiently generate power from high temperature heat of combustion while suppressing an increase in the size of a device as a whole.  <P>SOLUTION: The power generation system comprises a mixed gas generator 11 for generating mixed gas, a gas turbine 12 that uses the mixed gas as fuel, and a generator 14 coupled to the gas turbine 12 via a rotary shaft 13. The mixed gas generator 11 generates mixed gas by electrolyzing water to generate a hydrogen gas and an oxygen gas in a mole ratio of 2:1 and mixing them evenly. The mixed gas has an extremely a high combustion temperature of 2,000 to 2,500°C and, when used as fuel, develops thermal expansion and a sudden increase in volume under a high temperature condition, so that a small quantity thereof can produce high pressure to efficiently rotate the gas turbine 12.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003216815-A (JP)
Title: Discrepancy detecting method
Inventor: KAWAKUBO ATSUSHI
IPC: G06Q40/04
Filed: 2002-01-18
Abstract: <P>PROBLEM TO BE SOLVED: To minimize an office work risk and a settlement risk accompanying a discrepancy made evident when movement schedule data regarding deposited securities and deposited securities report data are checked and to complete notification to a customer in its early stages.  <P>SOLUTION: The discrepancy detecting method includes a step for matching deposited securities report data received from an overseas custodian against fund notice data regarding fund account movement and balance as to deposited securities report data regarding deposited securities to be checked against movement schedule data regarding the deposited securities and a step for detecting funds matching the deposited securities report data being unavailable.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2003216407-A (JP)
Title: Electric equipment control device and program for controlling electric equipment
Inventor: KADOI HIROKAZU
IPC: G09G5/00
Filed: 2002-01-21
Abstract: <P>PROBLEM TO BE SOLVED: To prevent a burning of a screen of a monitor displaying operating states of electric equipment and to quickly correspond thereto, when there is something abnormal occurring to the operating state.  <P>SOLUTION: This electric equipment control device 3 controlling the operating states of the electric equipment is provided with display processing means 14 and 15 allowing the monitor to display the operating states of the electric equipment, and a display changeover means 11 changing over between a control screen displaying the operating states and a dynamic control screen changing a part or the all parts of the operating states on the screen of the monitor according to the operating states.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002305432-A (JP)
Title: Dynamic delay flip-flop circuit
Inventor: NOSAKA HIDEYUKI
IPC: H03K3/289
Filed: 2002-01-22
Abstract: PROBLEM TO BE SOLVED: To improve re-timing characteristics. SOLUTION: The collector terminals of two emitter/follower transistors Q21a and Q22a of an emitter/follower circuit EF1a of a master circuit MASa are respectively connected to the collector terminals of two transistors Q31a and Q32a of the differential pair of a clocked invertors circuit CS2a of a slave circuit SLAa and the common connection of load resistances R31a and R32a.
Patent JP-2003214708-A (JP)
Title: Hot water supply device
Inventor: TANAKA HIRONOBU
IPC: F24H1/18
Filed: 2002-01-22
Abstract: <P>PROBLEM TO BE SOLVED: To provide a sanitary and convenient hot water supply device that can prevent erroneous use of an old liquid in a heating container and simply rinse-wash the heating container.  <P>SOLUTION: A rinse-washing means 19 and a no-load rinsing means 20 are provided to protect a user against erroneously using an old liquid in the heating container and save the user trouble about rinse-washing.  <P>COPYRIGHT: (C)2003,JPO
Patent JP-2002365389-A (JP)
Title: Fuel assembly
Inventor: YAMADA MASAHIKO
IPC: G21C3/33
Filed: 2002-01-22
Abstract: PROBLEM TO BE SOLVED: To prevent bending deformation of a dash pot part by moderating the falling impact in the falling of a control rod, without impairing cooling function of a non-fuel reactor core structure. SOLUTION: This fuel assembly comprises a lower nozzle 7 placed on the lower core plate to a PWR; an upper nozzle 21 having a pressing spring 22 for pressing the lower nozzle 7 against the lower core plate; two or more guide thimbles 1 for guiding the control rod passed in the upper nozzle 21 toward the lower core plate; two or more support lattices 27, 28 and 17 mounted on each guide thimble 1; two or more fuel rods 26 held on each support lattice 27, 28, 17 substantially in parallel to the guide thimble 1; a dash port part 20 formed on the guide thimble 1 for reducing the falling speed of the control rod; a thimble screw 11 for connecting the guide thimble 1 to the lower nozzle 7; and a thimble screw hole 13 formed through the thimble screw 11. The dash port part 20 has a major diameter part, substantially equal in diameter to the guide thimble 1.  When the inside diameter of large diameter part is D, hole diameter d of the thimble screw hole 13 is set to lie within the rang of 0.0 4D<d<0.08 D.