baber/WOPTO huggingface dataset:
Patent JP-2018534199-A (JP)
Title: 電動自転車、電動自転車のためのイモビライザ、および電動自転車を動作させるための方法
IPC: B62M6/45
Filed: 2016-10-04
Abstract: 本発明は、電動自転車１、とりわけペデレックまたはイーバイクであって、電気モータと、前記電気モータにエネルギを供給するための、好ましくは蓄電池である電気エネルギ貯蔵器とを含む、電動自転車１に関する。有利な発展形態のために、本発明は、前記電動自転車１は、第１の制御装置１１を有し、前記第１の制御装置１１は、前記電気モータ２に結合されており、第１のキーコードを保存するように構成されており、前記電動自転車１は、第２の制御装置１２を有し、前記第２の制御装置１２は、前記エネルギ貯蔵器３に結合されており、第２のキーコードを保存するように構成されており、前記制御装置１１，１２は、とりわけバスによって実現されているデータ伝送システム２２に接続されているか、または接続可能であり、前記第１の制御装置１１および前記第２の制御装置１２は、当該第１の制御装置１１および当該第２の制御装置１２のうちで決定された少なくとも１つの制御装置１１，１２に、他方の制御装置１１，１２から、当該他方の制御装置１１，１２のキーコードが伝送されるように構成されており、前記決定された少なくとも１つの制御装置１１，１２は、所定の基準に基づいて、当該決定された少なくとも１つの制御装置１１，１２自身のキーコードが、自身に伝送されてきた前記他方の制御装置１１，１２のキーコードに適合しているかどうかを識別するように構成されている、ことを提案する。本発明はさらに、上述した特徴のうちの１つまたは複数の特徴を有する電動自転車のためのイモビライザにも関する。本発明はさらに、電動自転車を動作させるための方法にも関する。
Patent JP-2018538247-A (JP)
Title: Ａｍｌを処置することに用いるための医薬組成物およびそれを必要とする対象においてａｍｌを処置する方法
IPC: C12Q1/6837
Filed: 2016-10-21
Abstract: 本発明は、急性骨髄性白血病（ＡＭＬ）を処置することに用いるための医薬組成物、およびそれを必要とする患者においてＡＭＬを処置する方法を提供する。本発明はまた、遺伝子発現シグネチャーを使用して患者における処置に対する感受性を予測する方法も提供する。
Patent JP-2018536188-A (JP)
Title: 位置決めデバイス、リソグラフィ装置、及びデバイス製造方法
IPC: H01L21/68
Filed: 2016-11-17
Abstract: 位置決めデバイスは、オブジェクトテーブルを保持するように構成された第１の位置決めモジュール部材と、第１の位置決めモジュール部材を支持するように及び第１の位置決めモジュール部材と協働するように構成された、第２の位置決めモジュール部材と、を備える、位置決めモジュール、第２の位置決めモジュール部材を支持フレームに対して垂直方向に変位させるように構成された、１つ以上のアクチュエータ、及び、オブジェクトテーブルの位置を制御するように構成された、制御ユニット、を備え、制御ユニットは、第２の位置決めモジュール部材の上面を、第１の位置決めモジュール部材の底面に対して実質的に平行に維持するように、１つ以上のアクチュエータにアクチュエータ制御信号を提供することによって、第２の位置決めモジュール部材の垂直位置を制御するように更に構成される。【選択図】 図３
Patent JP-2018536990-A (JP)
Title: 底部処理
IPC: H01L21/02
Filed: 2016-10-10
Abstract: 本明細書に開示された実施形態は、概して、基板の底部にかかる熱応力を弱めるための、基板の底部の処理のための方法及び装置に関する。基板の底部面には、基板の上表面の望ましくないストレイン及び歪みを補うストレインの修正が施される。基板の望ましくない歪みを補うストレインを生成するために、堆積、注入、熱処理、及びエッチングの任意の組み合わせにより、特異的に設計された膜を基板の裏側に形成することができる。窒化ケイ素膜又は炭素膜の水素含有量を局所的に変更することにより、局所化されたストレインを導入することができる。プリンティング、リソグラフィ、又は自己組立て技法により、構造体を形成することができる。膜の層の処理は、所望の応力マップによって決定され、アニール、注入、溶解、又はその他の熱処理を含む。 【選択図】図１
Patent JP-2019507205-A (JP)
Title: シリコーン組成物を架橋させるためのタイプｉｉ光開始剤系の使用
IPC: C08F2/50
Filed: 2016-12-22
Abstract: 本発明は、２００〜４５０ｎｍの波長の放射線にそれを暴露することによって架橋させることができるシリコーン組成物Ｃにおいて、前記組成物が、− 少なくとも１種のラジカル光開始剤Ａと；− ケイ素原子に結合した少なくとも１個の水素原子を含む化合物の中から選択される少なくとも１種の共開始剤Ｂとを含む組成物（Ｃ）に関する。【選択図】なし
Patent JP-2019506066-A (JP)
Title: 受信機性能の改善のための位相雑音トラッキングパイロットへのｄｍｒｓ構成のマッピングを行うためのシステム及び方法
IPC: H04W56/00
Filed: 2017-02-08
Abstract: ある実施形態によれば、ユーザ装置（810）は、セルラネットワークにおける使用のために提供される。ユーザ装置（810）は、送受信機（910）、プロセッサ（920）、及びメモリ（930）を備えうる。ユーザ装置（810）は、復調参照信号（ＤＭＲＳ）構成を取得するように構成されうる。ＤＭＲＳ構成から位相雑音トラッキング参照信号（ＰＮＴ−ＲＳ）へのマッピングが判定される。ＤＭＲＳ構成を用いてチャネル推定が実行される。マッピング及びチャネル推定を用いて、ＰＮＴ−ＲＳに基づいて位相雑音の推定及び補償が実行される。
Patent JP-2019506894-A (JP)
Title: ハウジングおよびカプラを含むエアロゾル送達装置
IPC: A24F40/70
Filed: 2016-12-27
Abstract: 本開示は、エアロゾル送達装置に関する。エアロゾル送達装置は、制御体と、噴霧器およびエアロゾル前駆体組成物を収容するように構成されたリザーバを含むカートリッジとを含み得る。制御体は、第１の長手方向軸に沿って延在し、電源を受容するように構成された電源キャビティを画定するハウジングを含み得る。制御体は、エアロゾル前駆体組成物を含むカートリッジが第２の長手方向軸に沿って延在するように、カートリッジに係合するように構成されたカプラをさらに含み得る。第１の長手方向軸と第２の長手方向軸は、非同軸であり、互いに実質的に平行に配向され得る。関連する組み立て方法も提供される。
Patent JP-2019515806-A (JP)
Title: 駆動モータを備えた手持ち式工作機械
IPC: B25F5/02
Filed: 2017-04-10
Abstract: 本発明は、手持ち式工作機械、特に研磨機に関し、該手持ち式工作機械は、使用者が把持する棒状のハンドル要素（１２）と、ハンドル要素（１２）上に接合アセンブリ（１３）を用いて可動に装着されている加工ヘッド（１１）とを備えている。加工ヘッドは、加工工具（２０）を保持するために設けられている工具ホルダ（１９）を駆動する電気駆動モータ（１００）と、駆動モータ（１００）と工具ホルダ（１９）との間にある減速伝動部（８０）とを有しており、伝動部は、工具ホルダ（１９）の速度に関連して駆動モータの出力部（８１）の減速を実現するように設計されている。本発明によれば、駆動モータ（１００）はブラシレス式モータであり、駆動モータ（１００）の電源システム（４０）は、駆動モータ（１００）から距離を隔ててハンドル要素（１２）に配置されており、電源システムは、線形構造体（４１）を用いて駆動モータ（１００）に接続されている。
Patent JP-2019519911-A (JP)
Title: 施設モニタリング及び制御のためのリアルタイム移動式キャリアシステム
IPC: G05B19/418
Filed: 2017-04-26
Abstract: 移動式キャリアモニタリング装置の実施形態を開示する。この装置は、製造中の製品をその内部に受け取るように構成されるとともに、輸送システムによって製造施設内の複数の位置に移動されるように構成された、１又は２以上の移動式キャリアを含む。各移動式キャリアの内部又は外部には、移動式キャリア制御システムと、移動式キャリア制御システムに結合された１又は２以上のセンサとが位置する。各移動式キャリアの内部又は外部には通信システムが位置して、少なくとも１つのセンサと移動式キャリア制御システムとに通信可能に結合され、各移動式キャリアの内部又は外部には電力システムも位置して、移動式キャリア制御システム、１又は２以上のセンサ及び通信システムに電力を供給するように結合される。他の実施形態も開示して特許請求する。【選択図】図２
Patent JP-2020108643-A (JP)
Title: Game machine
Inventor: YANAGA YUUJI
IPC: A63F7/02
Filed: 2019-01-06
Abstract: To provide a game machine capable of suppressing the rebound of game balls to smoothly guide the game balls in a lateral direction, and effectively preventing jamming and catching of the game balls.SOLUTION: Ball passages T1 to T5 include a ball passage T1 which is a vertical passage through which a game ball can fall. The ball passage T1 includes a contact portion 7110A with which a falling game ball comes into contact, and a discharge portion 7110B which discharges a game ball reaching the contact portion 7110A in a predetermined lateral direction. The contact portion 7110A includes a first deceleration portion 7300 that can guide the game ball in the predetermined lateral direction while reducing the traveling speed of the game ball that has fallen. The first deceleration portion 7300 is formed to initially guide the game ball in a direction different from the predetermined lateral direction.SELECTED DRAWING: Figure 175
Patent JP-2019077707-A (JP)
Title: Identification of Polynucleotide Related to Sample
Inventor: WILLIAM H ROBINSON
IPC: C12P19/34
Filed: 2019-01-10
Abstract: To provide a composition and a method for sequencing, analyzing, and using a sample such as a single sample, a composition and a method for matching two or more sequences derived from the sample, and furthermore, a composition and a method for expressing and screening a target molecule of interest.SOLUTION: There is provided a polynucleotide library containing a plurality of compositions, in which the library includes cDNA which codes heavy-chain and light-chain variable regions of immunoglobulin, or α and β variable regions of a T cell receptor, which is a variable region derived from the same clone family, each composition exists in an independent container, each composition includes a single sample-derived cDNA molecule and a sample identification region attached to the cDNA molecule, a nucleotide sequence of the sample identification region is different from a nucleotide sequence of a sample identification region of another composition which exists in another independent container in the library.SELECTED DRAWING: None
Patent JP-2020111539-A (JP)
Title: Condensed heterocyclic compound and pest control agent
Inventor: MAIZURU YUKIHIRO
IPC: A01P7/04
Filed: 2019-01-11
Abstract: To provide a condensed heterocyclic compound and a salt thereof, and a pest control agent containing the compound as an active ingredient.SOLUTION: There is provided the compound of the following general formula (1), for example, 2-[3-(ethylsulfonyl)-7-(trifluoromethyl)imidazo[1,2-a]pyridin-2-yl]-7-(trifluoromethyl)imidazo[1,2-c]pyrimidine. In the formula (1), D is a ring represented by any of D1 to D3 and Q is a ring represented by any of Q1 to Q4.SELECTED DRAWING: None
Patent JP-2020111711-A (JP)
Title: Foamable styrenic resin particle and method for producing the same
Inventor: HARAGUCHI KENJI
IPC: C08J9/20
Filed: 2019-01-16
Abstract: To provide foamable styrenic resin particles capable of producing a styrenic resin foam particle molding which has excellent self-extinguishing performance, has a small content of an unreacted styrenic monomer, and suppresses reduction in a molecular weight when its weight is reduced by heating, and a method for producing the same.SOLUTION: Foamable styrenic resin particles are produced by suspension polymerization of a styrenic monomer in the presence of a bromine flame retardant and a flame-retardant assistant. The bromine flame retardant is an organic compound having a 2,3-dibromo-2-methyl propyl group and/or an organic compound having a 2,3-dibromo propyl group. The flame-retardant assistant is poly-(1,4-diisopropylbenzene).SELECTED DRAWING: None
Patent JP-2020114610-A (JP)
Title: Driving machine
Inventor: SAITO TAKESHI
IPC: B25C7/00
Filed: 2019-01-17
Abstract: To provide a driving machine capable of easily performing a work for changing the position of a contact mechanism with respect to an injection section.SOLUTION: A driving machine 10 includes: a striking section which can be operated so as to drive a fastening tool 43 into a flooring material 54; a driving section which operates and stops the striking section; and an injection section 13 which operably supports the striking section. The driving machine further includes: a contact mechanism 52 which is mounted in the injection section 13 and performs the positioning of the injection section 13 in the flooring material 54; and an adjustment mechanism 93 which has an adjustment state for making the contact mechanism 52 movable with respect to the injection section 13 and a fixed state for fixing the contact mechanism 52 to a guide section. The adjustment mechanism 93 has a lever 98 which is operated by operating force of an operator and switches the adjustment state and the fixed state and a support shaft 99 which operably supports the lever 98.SELECTED DRAWING: Figure 3
Patent JP-2020118466-A (JP)
Title: Sample supply apparatus, inductively coupled plasma analysis system including sample supply apparatus, and sample supply method
Inventor: TERAMOTO YOSHIYUKI
IPC: G01N21/73
Filed: 2019-01-18
Abstract: To provide a sample supply apparatus capable of causing a sample to be measured to reach plasma stably.SOLUTION: A sample supply apparatus 12 includes an introduction device 52 for intermittently introducing a sample S, and a plasma torch 24 in which plasma generation means 22 for generating plasma P is provided and which guides the introduced sample S to the plasma P. The introduction device 52 is provided at an upper portion of the plasma torch 24 and the plasma generation means 22 is provided at a lower portion of the plasma torch 24.SELECTED DRAWING: Figure 1
Patent JP-2019166630-A (JP)
Title: Tools for rotating fasteners, methods of utilizing those tools, and methods of manufacturing those tools
Inventor: KARL JAMES ETTLING
IPC: B25B13/50
Filed: 2019-01-23
Abstract: To provide improved tools for rotating fasteners, improved methods of utilizing the tools, and/or improved methods of manufacturing the tools.SOLUTION: A gripping region 110 is configured to be gripped by a user of a tool 100. A fastener receptacle 120 is shaped to receive the fasteners and includes a fastener-receiving opening on a fastener-facing side 102 of the tool 100. The fastener-facing side 102 faces in a fastener-facing direction 106. The fastener-receiving opening 122 is sized to permit the fastener to enter the fastener receptacle 120 from the fastener-facing side 102 of the tool 100. An interlock structure 140 is configured to interlock with the fastener while the fastener is received within the fastener receptacle 120. The interlock structure 140 is also configured to prevent motion of the tool 100 away from the fastener in a fastener-opposed direction 108, which is opposed to the fastener-facing side 102 of the tool 100, while the interlock region is interlocked with the fastener.SELECTED DRAWING: Figure 3
Patent JP-2020116174-A (JP)
Title: Endoscope tube and endoscope
Inventor: OI TAKESHI
IPC: A61B1/005
Filed: 2019-01-24
Abstract: To provide an endoscope tube capable of securing a large cross sectional area of a main lumen, and an endoscope which comprises the endoscope tube and has excellent stability and strength of deviation operation of a distal end.SOLUTION: An endoscope tube 2 comprises: a main lumen 21 which is long and hollow and is formed inside longitudinally; and at least one pair of wire lumens 22 which are integrally molded with the inner peripheral surface of the main lumen 21 and face each other.SELECTED DRAWING: Figure 3
Patent JP-2020117834-A (JP)
Title: Tubular knit fabric
Inventor: YOSHIDA YUJI
IPC: D04B1/18
Filed: 2019-01-24
Abstract: To provide a tubular knit fabric which is less likely to run when worn and has a function of feeling coolness in a hot environment.SOLUTION: A tubular knit fabric contains two kinds of covered elastic yarns that are obtained by covering an elastic yarn with a non-elastic yarn and the knit fabric is knitted in a jersey stitch structure. An elastic fiber constituting at least one kind of covered elastic yarn out of the two kinds of covered elastic yarns is a fixing elastic yarn. At least one kind of covered elastic yarn is a covered elastic yarn having a moisture absorption of 3.5% or more, and the tubular knit fabric has unraveling stress of 2.0 cN or more.SELECTED DRAWING: None
Patent JP-2020117646-A (JP)
Title: Composition for three-dimensional molding
Inventor: MIZUTA TOMOYA
IPC: C08F2/50
Filed: 2019-01-25
Abstract: To provide a composition which is rapidly cured even under a high-humidity environment and allows for accurately producing a three-dimensional molded article having excellent adhesion not only to plastics but also to metals and glass.SOLUTION: A composition for three-dimensional molding according to the present invention contains a cationically polymerizable compound and a photo- or thermal polymerization initiator. The cationically polymerizable compound contains at least a compound (A) having a vinyl ether group and a hydroxyl group, a compound (B) having an oxetanyl group and a hydroxyl group, and a compound (C) represented by the following formula (c). The total content of the compound (A), the compound (B) and the compound (C) is 50 wt.% or more of the total amount of the cationically polymerizable compound. The content [A] of the compound (A) and the content [B] of the compound (B) satisfy the following formula (1): A/(A+B)≥0.3.SELECTED DRAWING: None
Patent JP-2020120825-A (JP)
Title: Fiber-reinforced material, and method for producing the same
Inventor: NAKADA YOSHITOMO
IPC: A61L29/12
Filed: 2019-01-29
Abstract: To provide a fiber-reinforced material having excellent lubricity.SOLUTION: A fiber-reinforced material comprises a fiber substrate, and hydrogel containing a polymer and water, the fiber substrate and hydrogel being integrated. The fiber-reinforced material has a moisture content of 87% or more.SELECTED DRAWING: None
Patent JP-2019093174-A (JP)
Title: Inflatable medical balloon with continuous fiber winds
Inventor: ALEXANDER QUILLIN TILSON
IPC: A61M25/10
Filed: 2019-02-01
Abstract: To provide a low-compliance and high-pressure medical fiber-reinforced composite-material balloon and production method thereof.SOLUTION: A fiber-reinforced device such as an inflatable medical balloon 2 comprises a cylindrical central portion 1301. The balloon includes first and second tapered or conical end portions 1303a and 1303b connected to the central cylindrical portion along a central longitudinal axis 108 extending from a first end 1305a of the balloon to a second balloon end 1305b of the balloon. The balloon includes a single continuous fiber extending substantially parallel to the longitudinal axis along the central portion and radially around a portion of the end portions, or both. The balloon comprises a second fiber 1315 extending radially around the central portion of the balloon, where the second fiber may be part of a single continuous fiber.SELECTED DRAWING: Figure 1
Patent JP-2020124349-A (JP)
Title: Treatment device
Inventor: UCHIUMI MASAO
IPC: A61M1/36
Filed: 2019-02-04
Abstract: To provide a treatment device capable of eliminating heavy fatigue after undergoing dialysis, lightening the darkening of a facial color, and preventing deterioration in physical condition.SOLUTION: A treatment device for performing dialysis in which blood is sent to a dialyzer and the blood coming out of the dialyzer is returned to veins includes: a tube positioning and holding member capable of maintaining a taking-out tube for taking out blood from a patient undergoing dialysis and supplying it to a dialysis side and a tube for returning the dialysis blood to the patient undergoing dialysis in a parallel state for a predetermined distance; and a mounting member for positioning and holding the tube positioning and holding member at a body of the patient undergoing dialysis in a contact state. The dialysis can be performed in a state that the taking-out tube and the return tube in an equilibrium state are brought into contact with the body of the patient undergoing the dialysis.SELECTED DRAWING: Figure 1
Patent JP-2020125066-A (JP)
Title: Control apparatus and gear change system
Inventor: SHAKA SATOSHI
IPC: B62M6/45
Filed: 2019-02-06
Abstract: To provide a control apparatus capable of contributing to smooth running of a personally-driven vehicle, and a gear change system.SOLUTION: A control apparatus comprises a control part that controls a transmission of a personally-driven vehicle in accordance with gear change conditions. The control part controls the transmission so as to suppress shift-down gear change for decreasing a change gear ratio of the personally-driven vehicle in a predetermined state in which a vehicle speed of the personally-driven vehicle is in a predetermined speed range, and controls the transmission so as to release the suppression of the shift-down gear change in accordance with travel information on a running state of the personally-driven vehicle.SELECTED DRAWING: Figure 7
Patent JP-2020128907-A (JP)
Title: sensor
Inventor: TSUJIMOTO HIROYUKI
IPC: G01N5/02
Filed: 2019-02-08
Abstract: To provide a sensor capable of measuring a gas having a high hydrophilic property such as ethanol and aldehyde at high sensitivity even in a humid state, and continuously measuring it without deterioration of a sensitive film even after long-term use after reflow treatment.SOLUTION: Provided a sensor having a sensitive film containing an organic inorganic hybrid, the organic inorganic hybrid including a structure represented by RSiO, where R represents an organic functional group and porosity as a volume fraction of the sensitive film is 10% or less.SELECTED DRAWING: None
Patent JP-2020137133-A (JP)
Title: Switching switch
Inventor: KATO AKIYOSHI
IPC: H02B1/40
Filed: 2019-02-12
Abstract: To provide a switching switch that can realize a space-saving configuration when a branch breaker is connected to the secondary side of the switching switch through an earth leakage breaker.SOLUTION: A switching switch includes a pair of power supply terminals 2a and 2b connecting two power supplies, an output terminal 3, and an operation handle 4 that selects one of the pair of power supply terminals 2 and connecting the selected power supply terminal to the output terminal, and a branch copper bar 7a for connecting a plug-in type primary side terminals 61 of a plurality of branch breakers 6 is provided on one side surface of a housing 10 in which the output terminal 3 is arranged. The branch copper bar 7a is connected to an electric wire 12 connected to a secondary side terminal 52 of a main breaker 5 connected to the output terminal 3.SELECTED DRAWING: Figure 4
Patent JP-2019169138-A (JP)
Title: System and method for field device management using cluster parameter set
Inventor: Weng wei hong
IPC: G05B23/02
Filed: 2019-02-13
Abstract: To provide a plant device management system configured to efficiently manage parameter information of a field device for the purpose of plant engineering, operation, and maintenance.SOLUTION: A plant device management system 20000 includes a device parameter set manager 20200 configured for the purpose of class parameter set creation, class parameter set configuration, class parameter set assignment, parameter audit, etc., although not limited thereto. The device parameter set manager of the plant device management system can includes a device parameter set creator tool, a device parameter set configuration tool, a device template manager, and a device parameter audit part, although not limited thereto.SELECTED DRAWING: Figure 1A
Patent JP-2020135050-A (JP)
Title: Keyboard with holding part
Inventor: ASANO TORU
IPC: G06F3/02
Filed: 2019-02-13
Abstract: To provide a novel keyboard which can be used while holding the same by a hand.SOLUTION: There is provided a keyboard which comprises a finger insertion hole at least having an opening on the rear face.SELECTED DRAWING: Figure 2
Patent JP-2020135960-A (JP)
Title: Induction heating cooker
Inventor: KOIKE NARIHIKO
IPC: H05B6/12
Filed: 2019-02-14
Abstract: To suppress enlargement of a non-contact temperature sensor in an induction heating cooker comprising the non-contact temperature sensor for detecting infrared rays from a heated object and infrared rays from a top board.SOLUTION: An induction heating cooker comprises: a top board on which an object to be heated is placed; a transmission part through which infrared rays radiated from the heated object are transmitted; a heating coil for heating the object to be heated; and a non-contact temperature sensor which is disposed at a lower side of the top board and detects a temperature of the heated object. In the induction heating cooker, the non-contact temperature sensor includes: a first light-receiving part for detecting infrared rays transmitted through the transmission part; a second light-receiving part for detecting infrared rays radiated from a region excluding the transmission part in the top board; a first condenser part for condensing the infrared rays transmitted through the transmission part to the first light-receiving part; and a second condenser part for condensing the infrared rays radiated from the region excluding the transmission part in the top board to the second light-receiving part. An optical axis of the second condenser part is configured closer to an optical axis of the first condenser part at the side of the second light-receiving part than an emission surface of the second condenser part.SELECTED DRAWING: Figure 4
Patent JP-2020133737-A (JP)
Title: Flow control valve
Inventor: KONDO HIROSHIGE
IPC: F16K31/04
Filed: 2019-02-19
Abstract: To provide a flow control valve in which the driving torque of a motor or the like that is driving means, is reduced and a backlash occurring when vertical movement of a valve member can be suppressed.SOLUTION: The flow control valve comprises : a valve casing 2 having a primary chamber 5 and a secondary chamber 6; a valve seat 14 disposed inside the valve casing 2; a valve element 25 which can seat on the valve seat 14; a needle 17 continuous with the valve element 25; a motor mechanism that moves the needle 17 along the axis direction of the needle 17 to switch between a valve close state in which the valve element 25 seats on the valve seat 14 and a valve open state in which the valve element leaves the valve seat 14; a pressure receiving chamber 26 provided on the upper surface of the valve element 25; and a conduction passage that is provided in the valve element 25 and comprises a first communication groove 23 and a second communication groove 24, which provide communication between the secondary chamber 6 and the pressure receiving chamber 26. The upper surface of the valve element 25, forming the lower surface of the pressure receiving chamber 26 has a diameter PB which is set to be slightly larger than the diameter PA of the lower surface of the valve element 25, forming the upper surface of the secondary chamber 6.SELECTED DRAWING: Figure 1