baber/WOPTO huggingface dataset:
Patent WO-2020189674-A1 (WO)
Inventor: SHINGU AKIRA
IPC: B32B15/04
Filed: 2020-03-17
Abstract: An aluminum alloy foil (1) is one having a first surface (1A). The aluminum alloy foil (1) contains aluminum, silicon, 0.4 to 1.75% by mass inclusive of manganese, 0.02 to 0.08% by mass inclusive of iron, 0.00001 to 0.03% by mass inclusive of zinc, 0.00001 to 0.02% by mass inclusive of copper and 0.00001 to 0.01% by mass inclusive of magnesium. In the aluminum alloy foil (1), the total content of silicon and iron is 0.1% by mass or less. In the aluminum alloy foil (1), the ratio of the mass of manganese to the total mass of silicon and iron is 7.0 or more. On the first surface (1A), the area ratio of second phase particles each having an equivalent circle diameter of 1.5 μm or more is 0.1% or less. The electrical resistivity value is 3.0 to 5.0 μΩcm inclusive.
Patent WO-2020196242-A1 (WO)
Inventor: TANABE JINICHI
IPC: B60N2/888
Filed: 2020-03-19
Abstract: This vehicle seat effectively reduces the load that acts upon a passenger at the time of a vehicle collision. A vehicle seat 200 comprises a seat back S1 and a head rest S3, wherein: the seat back has therein a chest support member 20 which receives the chest H3 of a passenger H and supports the same when a reverse movement load acts upon the passenger as a result of a vehicle collision; and the head rest has therein a head support member 30 which receives the head of the passenger and supports the same when the reverse movement load acts upon the passenger. When a reverse movement load acts upon the passenger, the chest support member and the head support member both receive the reverse movement load.
Patent WO-2020203697-A1 (WO)
Inventor: MIYASHITA TOSHIYUKI
IPC: C01B21/068
Filed: 2020-03-26
Abstract: Provided is a silicon nitride powder having a total amount of fluorine of 100-1000 mass ppm and a total amount of Fe, Al, and Ca of 100-1000 mass ppm. Provided is a method for producing silicon nitride powder that has a step for sintering a raw material including silicon powder and a fluoride with a content of fluoride to silicon powder of 0.1-2 mass% in a mixed atmosphere including at least one selected from the group consisting of nitrogen, hydrogen, and ammonia to obtain a sintered product, and a step for treating the sintered product by hydrofluoric acid having a hydrogen fluoride concentration of 10-40 mass%.
Patent WO-2020203812-A1 (WO)
Inventor: NIMURA Kazumi
IPC: A61P27/02
Filed: 2020-03-27
Abstract: Provided is an inhibitor for a hypoxia-inducible factor (HIF). The HIF inhibitor may have low cytotoxicity and may be suitable for ophthalmological therapy. The present disclosure provides a composition that is for inhibiting a hypoxia-inducible factor (HIF) and that contains an extract of a fish or shellfish. The extract of a fish or shellfish may be a hot water extract, and may be obtained by mixing the hot water extract with an organic solvent, and removing the organic solvent fraction. In one aspect, the composition according to the present disclosure contains an extract of a specific living organism (e.g., a fish or shellfish). The HIF inhibitor may be used as a therapeutic or prophylactic agent for retinal degenerative diseases, choroidal neovascularization diseases, cancer, neurodegeneration, or autoimmune diseases.
Patent WO-2020204065-A1 (WO)
Inventor: SUZUKI SHIGERO
IPC: A23G3/02
Filed: 2020-04-01
Abstract: The present invention provides a high-speed continuous device for producing baked goods with which it is possible to improve productivity of baked goods by extracting the baked goods continuously at high speed and being able to convey the extracted baked goods in an orderly manner. A high-speed continuous device for producing baked goods 1 is provided with a baking device 2, an extraction device 6, and a conveyance device 7. The baking device 2 has a circulating conveyor 3 and a plurality of baking pan stands 4. The extraction device 6 has a grasping part 60. The circulating conveyor 3 and the grasping part 60 are mechanically connected via a motion conversion/transmission mechanism 37 that transmits the rotational motion of a rotating shaft 322 of the circulating conveyor 3 by converting the motion into a horizontal reciprocating motion of the grasping part 60. When the baking pan stand 4 is conveyed by the circulating conveyor 3 to an extraction position B in the circulating conveyor 3, the circulating conveyor 3 and the grasping part 60 move in a manner synchronized by the motion conversion/transmission mechanism 37 so that the grasping part 60 performs an extraction operation that involves grasping a plurality of baked goods 10 from a baking pan 5 of the baking pan stand 4 and transferring the baked goods to the conveyance device 7.
Patent WO-2020213438-A1 (WO)
Title: Power conversion device for railway vehicle
Inventor: HASHIGUCHI NAOYA
IPC: H02M7/48
Filed: 2020-04-03
Abstract: Provided is a power conversion device for a railway vehicle which has a compact and lightweight configuration and is yet capable of effectively blocking noise. A heat exchanger 5 and a frame for holding the heat exchanger 5 are equipped with, for example, a power module 9 for performing power conversion, a filter capacitor 10, and a laminated busbar 11 for electrically connecting the power module 9 and the filter capacitor 10. All these elements are placed within a housing 2 when the heat exchanger 5 is fastened to the housing 2. In addition, an insulating plate 4 is placed on the housing 2 so as to surround a housing opening 3 provided in the housing 2, and is mounted by clamping with flange parts 5a of the heat exchanger 5. Moreover, bolt fastening is performed at bolt fastening parts via stepped insulating members 6 and stepped metal members 7 which transmit fastening forces for supporting the weight of the heat exchanger 5.
Patent WO-2020218562-A1 (WO)
Inventor: KOHASHI MASAYUKI
IPC: A61K31/195
Filed: 2020-04-24
Abstract: ５－アミノレブリン酸（ＡＬＡ）もしくはその誘導体、またはそれらの塩を含む、光線力学的療法（ＰＤＴ）による薬剤耐性がんの治療または予防のための医薬組成物、該医薬組成物を用いた薬剤耐性がんの治療または予防方法を提供する。
Patent WO-2020241733-A1 (WO)
Title: 生体電極及び生体電極付き装具
Inventor: HAYASHI HIROYUKI
IPC: A61B5/0408
Filed: 2020-05-28
Abstract: 【課題】アーチファクトが少ない生体信号を測定可能で、近接する生体電極間で短絡の虞がなく、装着時や生体信号測定時の不快感のない生体電極、及び装着時の圧迫にも配線が断線し難く、装着部位周長の個人差があっても生体電極を所定位置に当接させ正確な測定や電気刺激を行える生体電極付き装具を提供する。 【解決手段】導電性繊維を含有するシート状構造体に吸水性樹脂を付与し、水分保持指数０．８以上の生体電極とする。伸縮性布帛からなる基布上に、基布表面に形成された配線と、配線の末端に設けられた生体電極と、配線を被覆する絶縁層とを有する電極配置領域を備えた布帛構造物からなる生体電極付き装具において、基布が電極配置領域において相対的に低い伸長性を示す第一伸長方向と、それと異なる伸長方向で第一伸長方向より高い伸長性を示す第二伸長方向とを有し、配線が第一伸長方向に沿って形成されるようにする。
Patent WO-2020241850-A1 (WO)
Title: Method and system for calibrating radiation thermometer
Inventor: UOZUMI SHUJI
IPC: H01L21/304
Filed: 2020-05-29
Abstract: The present invention relates to a method and a system for automatically calibrating a radiation thermometer disposed on a polishing device. A method according to the present invention comprises: placing a heating device (61) having a measurement object (68) attached thereto under a radiation thermometer (48); heating the measurement object (68) to a plurality of target temperatures (Ta) using a control unit (40) of a polishing device connected to the heating device (61); measuring the temperature of the measurement object (68) at each of the target temperatures (Ta) using the radiation thermometer (48); calculating temperature deviation amounts, which are differences between each of the target temperatures (Ta) and a corresponding value of the temperature outputted by the radiation thermometer (48); and calibrating the radiation thermometer (48) so that all of the temperature deviation amounts are within a predetermined reference range.
Patent WO-2021250842-A1 (WO)
Title: Cutting tool
Inventor: KIDO YASUKI
IPC: C23C16/40
Filed: 2020-06-11
Abstract: Provided is a cutting tool comprising a base material and a coating disposed on the base material. The coating includes an α-Al 2 O 3  layer. The α-Al 2 O 3  layer contains a plurality of crystal grains of α-Al 2 O 3 , and the TC (006) at an orientation index TC (hkl) exceeds 5. A plastic deformation amount hp at 800ºC of the α-Al 2 O 3  layer is 0-100 nm, inclusive.
Patent WO-2021250897-A1 (WO)
Inventor: KURIYAMA KEITA
IPC: H04W72/04
Filed: 2020-06-12
Abstract: 複信方式に時分割多重を用いる端末局装置と基地局装置との間に伝搬遅延がある無線通信システムにおいて、基地局装置または端末局装置の少なくとも一方は、伝搬遅延を算出する遅延算出部を有し、基地局装置または端末局装置は、伝搬遅延に応じて、上りフレームと下りフレームとの切り替えに要する待機時間がより短くなるように、フレーム構成を変更する制御部を有する。これにより、余分な待機時間を短くし、伝送容量を向上させることができる。
Patent WO-2020255956-A1 (WO)
Inventor: MIKAMI YASUYA
IPC: A01K63/04
Filed: 2020-06-16
Abstract: Provided is a purifying material capable of highly efficiently removing contaminant components from wastewater.　In a method for manufacturing the water purifying material: caustic soda is added, under conditions of 30°C-50°C and pH 6.8-pH 7.2, to a solution containing a water purifying material having a composition of 30-40% total iron, 1-5% titanium, 0.1-1% magnesium, and 0.1-0.8% silica (silicon), the solution also containing 20-100 mg/L of bivalent iron, 20-100 mg/L of titanium ions, 5-50 mg/L of magnesium, and 3-30 mg/L of silica; neutralization and reaction are carried out; obtained solids are separated and collected at 100°C or less; and the collected solids are dried.
Patent WO-2021039052-A1 (WO)
Inventor: ARAHIRA SHOUTA
IPC: A61M25/02
Filed: 2020-06-19
Abstract: Provided is a holding implement which is capable of holding a catheter without creating bulkiness and with which it is also possible to improve the level of manipulation in operations using the catheter. This holding implement (10) for holding a flexible catheter (200) has a body part (20) and a plurality of protruding parts (30) protruding from the body part (20), wherein the catheter (200) can be held between adjacent protruding parts (30), the protruding parts (30) have a second through-hole (34), and the body part (20) has first through-holes (21).
Patent WO-2020262296-A1 (WO)
Title: 近赤外線カットフィルタガラスおよび光学フィルタ
Inventor: SAKAGAMI TAKAHIRO
IPC: C03C4/08
Filed: 2020-06-22
Abstract: 本発明の実施形態は、波長４００ｎｍ～５５０ｎｍの平均透過率が５０％～９２％であり、波長７００ｎｍの透過率が４０％～９２％であり、波長８５０ｎｍ～９５０ｎｍの平均透過率が０．０００１％～７０％であり、波長１２００ｎｍ～２５００ｎｍの平均透過率が０．０００１％～６０％である近赤外線カットフィルタガラスに関する。
Patent WO-2021024660-A1 (WO)
Inventor: MAEDA KOJI
IPC: C23C14/35
Filed: 2020-07-02
Abstract: A film forming apparatus equipped with a treatment vessel, a substrate-holding part for holding a substrate inside the treatment vessel, a cathode unit disposed above the substrate-holding part, and a gas-introducing mechanism for introducing a plasma-generating gas into the treatment vessel. The cathode unit comprises a target, a power source for supplying electric power to the target, a magnet provided on the back side of the target, and a magnet-driving unit for driving the magnet. The magnet-driving unit: comprises an oscillation-driving part for oscillating the magnet along the target and a perpendicular driving part for driving the magnet in a direction perpendicular to the main surface of the target, independent of the driving by the oscillation-driving part; and deposits sputter particles on the substrate by magnetron sputtering.
Patent WO-2021084808-A1 (WO)
Inventor: FUJIWARA KENJI
IPC: H02K15/12
Filed: 2020-07-09
Abstract: Provided is a method of preheating a motor stator, by which a mold 2, together with a motor stator 1, can be preheated uniformly and in little time using simplified preheating equipment.　A flange part 22 of the mold 2, which is provided with an elongated body part 21 and the flange part 22 that extends outward from one longitudinal end of the body part 21, is arranged horizontally so that the body part 21 of the mold 2 is oriented upward. A core 11 of the motor stator 1 is fitted into a cylindrical frame 13. In the resulting state, the body part 21 of the mold 2 is inserted into the core 11, and one longitudinal end of the frame 13 is placed over the flange part 22. Next, a case 5 that is thermally insulating and has a lower surface that is open is placed over so as to surround the outside of the frame 13 and the mold 2. An alternating current is passed to a coil 12 in the interior of the case 5. The coil 12 is made to emit heat, thus heating the core 11, the frame 13, and the mold 2.
Patent WO-2022013991-A1 (WO)
Title: Power semiconductor device
Inventor: FUKASAWA TOSHIKI
IPC: H01L29/739
Filed: 2020-07-16
Abstract: According to the present invention, a silicon substrate (10) has first to fourth semiconductor regions (11-14). The third semiconductor region (13) is separated from the first semiconductor region (11) of a first conductivity type by means of the second semiconductor region (12) of a second conductivity type. The fourth semiconductor region (14) of the second conductivity type is separated from the second semiconductor region (12) by means of the third semiconductor region (13). A first electrode (60) is provided on a first surface (F1). A barrier metal layer (20) is provided on a first portion (F2a) of a second surface (F2). A second electrode (70) is provided on the second surface (F2), and is separated from the first portion (F2a) of the second surface (F2) by means of the barrier metal layer (20). The second electrode (70) comprises: an Al-Si layer (71) that is in contact with a second portion (F2b) of the second surface (F2); and an Al layer (72) that is separated from the second portion (F2b) of the second surface (F2) by means of the Al-Si layer (71).
Patent WO-2021029215-A1 (WO)
Inventor: TAKAHASHI NOBUTAKA
IPC: H01L21/285
Filed: 2020-07-28
Abstract: The present invention provides: a bis(alkylcyclopentadienyl) tin or bis(alkyltetramethylcyclopentadienyl) tin having a high vapor pressure at a low temperature, such as bis(ethylcyclopentadienyl) tin; raw materials for chemical vapor deposition, which contain these organic tin compounds as primary components; and a method for producing a thin film containing tin by means of atomic layer deposition using the raw materials for chemical vapor deposition. These raw materials for chemical vapor deposition contain a bis(alkylcyclopentadienyl) tin or bis(alkyltetramethylcyclopentadienyl) tin represented by formula (1) as a primary component. (In formula (1), R 1  and R 2  each independently denote a hydrogen atom or an alkyl group having 6 or fewer carbon atoms, and R 3  and R 4  each independently denote an alkyl group having 6 or fewer carbon atoms.)
Patent WO-2021054186-A1 (WO)
Title: Activity task evaluating system, and activity task evaluating method
Inventor: SANKAI YOSHIYUKI
IPC: G16H40/00
Filed: 2020-09-07
Abstract: According to the present invention, when a subject executes a prescribed activity task, an action phase in which the execution efficiency drops to or below a prescribed level is accurately identified on the basis of a detection result of the state of activity of the subject, from a relationship with a transition of the state of health of the subject obtained through habitual repetition of the activity task.
Patent WO-2021060012-A1 (WO)
Inventor: KUSAFUKA KAORU
IPC: G02B30/32
Filed: 2020-09-11
Abstract: This parallax barrier is configured to define the ray direction of image light of a parallax image emitted from a display panel having a plurality of sub-pixels for displaying a parallax image which includes first and second images being parallax from each other in a parallax direction. The parallax barrier is provided with: a plurality of light-reducing parts; and a plurality of light-transmitting parts. The light-reducing parts are configured to transmit the image light with a transmittance less than a first value. The light-transmitting parts are sectioned by the light-reducing parts and separated from each other. The light-transmitting parts are configured to transmit the image light with a transmittance equal to or larger than a second value which is larger than the first value. The light-transmitting parts are positioned such that the respective centers of gravity thereof are aligned in a first direction parallel to the parallax direction. The light-transmitting parts are positioned so as to be aligned in a second direction which intersects the first direction.
Patent WO-2021060252-A1 (WO)
Inventor: KUROIWA YASUFUMI
IPC: B65D49/12
Filed: 2020-09-23
Abstract: Provided is a cap capable of improving airtightness without an increase in opening torque and closing torque. The cap is provided with: a shell 1 having a top wall 3, a sidewall 4 extending downward from the peripheral edge of the top wall 3, and a female thread 5 formed on the sidewall 4 and to be screwably engaged to a male thread M1 of a container mouth part M; and a gasket 2 held inside the shell 1 and sealing the container mouth part M. The gasket 2 is provided with a top plate 10 for covering the container mouth part M and a shank 11 disposed continuing from the lower surface of the top plate 10 and coming into close contact with the inner peripheral surface of the container mouth part M, and the center portion of the top plate 10 is displaced downward more significantly than the peripheral edge portion thereof as the top plate 10 elastically deforms when being pushed downward by the top wall 4 during closing.
Patent WO-2021060353-A1 (WO)
Inventor: NAKAO SACHIKO
IPC: B32B7/025
Filed: 2020-09-24
Abstract: The present invention addresses the problem of providing new technology for controlling the wave absorption characteristics of a λ/4 wave absorber. In view of the knowledge that the wave absorption peak position in the case where steps are provided to a dielectric layer can be controlled on the basis of the respective thicknesses and area ratio of the thick areas and thin areas of the dielectric layer, the present invention provides a λ/4 wave absorber that includes a stepped dielectric layer.
Patent WO-2021095424-A1 (WO)
Title: Information processing system and control method for information processing system
Inventor: MAYA YUZURU
IPC: G06F9/48
Filed: 2020-10-14
Abstract: When a plurality of simulations executed by each of a plurality of communicably connected simulators are executed in coordination, the simulations are executed efficiently and quickly as a whole. This information processing system stores execution order information, which is information indicating the execution order of a plurality of simulations. The simulators execute the simulations on the basis of input data, which is data inputted at the start of execution, the simulators generate output data, and upon arriving at a checkpoint, which is a timepoint in the middle of the simulation execution, the simulators perform execution control for another simulation. The checkpoint is set, for example, in terms of time or in terms of the situation of the simulation.
Patent WO-2021075508-A1 (WO)
Title: Absorbent article and auxiliary sheet
Inventor: TANIGUCHI MISAKI
IPC: A61F13/534
Filed: 2020-10-15
Abstract: Disclosed is an absorbent article equipped with a strip-shaped water-absorbing core, an auxiliary sheet that assists with liquid absorption by the water-absorbing core, a liquid-impermeable sheet, and a liquid-permeable sheet. The liquid-impermeable sheet, water-absorbing core, and liquid-permeable sheet are disposed in that order. The auxiliary sheet is disposed between the impermeable sheet and the water-absorbing core and/or between the water-absorbing core and the liquid-permeable sheet. The auxiliary sheet has a swelling layer including water-absorbing resin particles. The swelling layer is provided along the longitudinal direction of the water-absorbing core on both ends of the lateral direction of the water-absorbing core, and the 10-second value of the swelling power of the water-absorbing resin particles contained in the swelling layer is 5 N or higher.
Patent WO-2021079955-A1 (WO)
Inventor: SAIKI NAOYA
IPC: H01L21/301
Filed: 2020-10-22
Abstract: [Problème] L'objectif de la présente invention est de supprimer l'écaillage lorsqu'une lame de découpage en dés est utilisée pour découper à la fois une plaquette semi-conductrice ou une autre pièce à travailler et un film pour former un film de protection pour fabriquer de petites pièces avec un film protecteur fixé.　[Solution] Ce film 1 destiné à former un film de protection qui est caractérisé en ce qu'il contient une charge 2, et en ce que, en définissant T comme l'épaisseur de film totale lors de l'observation d'une section transversale dudit film 1, et en définissant une première région comme région depuis une surface du film jusqu'à une profondeur de 0,2 T et une seconde région comme région depuis l'autre surface de film jusqu'à une profondeur de 0,2 T, le diamètre cumulé à 50 % D501 de la charge observée dans la première région et le diamètre cumulé à 50 % D502 de la charge observée dans la seconde région satisfont D501 < D502, et D502 - D501)/D501 × 100 ≥ 5 (%).
Patent WO-2021106461-A1 (WO)
Title: 脱水装置、脱水圧縮システム、ｃｏ２回収システム、および脱水装置の制御方法
Inventor: MIYAMOTO OSAMU
IPC: B01D53/26
Filed: 2020-10-26
Abstract: 圧縮機により圧縮されたプロセスガスから水分を除去する脱水装置（６０）は、脱水剤に水分を吸収させる吸収塔（６２）と、脱水剤から水分を分離する蒸留塔（７２）と、吸収塔（６２）から蒸留塔（７２）へ脱水剤を搬送する搬送ラインと、脱水剤搬送ポンプ（７３）と、脱水剤搬送ポンプ（７３）の上流側と下流側の搬送ラインを連結するバイパスラインと、バイパスラインに配置される第１開閉弁（７５）と、制御装置（９０）と、を備え、制御装置（９０）は、圧力センサ（６９）が検出する圧力が第１所定圧力よりも低い場合は第１開閉弁（７５）を閉状態とし搬送ポンプ（７３）を動作させるよう制御し、圧力センサ（６９）が検出する圧力が第１所定圧力以上である場合は第１開閉弁（７５）を開状態とし搬送ポンプ（７３）を停止させるよう制御する。
Patent WO-2021111769-A1 (WO)
Inventor: KURASAWA Hisashi
IPC: G06F16/332
Filed: 2020-10-27
Abstract: A retrieval device 10 comprises: an input unit 11 for accepting a search query from a user; a retrieval unit 12 for calculating the degree of fitness of the search query with each of a plurality of pre-prepared data to be retrieved; a query extension unit 13 for adding an extension query associated with the search query to the search query and thereby generating an extension query; and a policy determination unit 14 for determining, on the basis of the degree of fitness for each piece of data to be retrieved as calculated by the retrieval unit 12, which process should be executed out of a first process of presenting to the user the data to be retrieved having a high fitness degree and a second process of proposing to a user that the degree of fitness for each piece of data to be retrieved be calculated by the retrieval unit 12 using the extension query as a new query.
Patent WO-2021100523-A1 (WO)
Title: 成型体及びその製造方法
Inventor: AKIMOTO RENTAROU
IPC: B29C45/14
Filed: 2020-11-09
Abstract: 本開示の１つの局面の成型体（３）は、樹脂を成型した成型体（３）であって、かつ、前記樹脂に光を透過させて使用される成型体（３）である。この成型体（３）は、前記成型の際に前記樹脂の注入がなされたゲートの痕としての複数のゲート痕（３Ｃ）と、前記光が前記樹脂を透過する位置を避けて配置されたウェルド部（３Ｅ）と、を備えている。
Patent WO-2021106716-A1 (WO)
Inventor: MASUDA TOSHIAKI
IPC: F16K11/085
Filed: 2020-11-18
Abstract: La présente invention concerne un dispositif de commutation de trajet d'écoulement qui comprend une partie cylindrique externe (101) qui comporte quatre parties d'ouverture (121) disposées de façon uniformément espacée sur une surface externe, une vanne (102) qui est logée de façon rotative dans la partie cylindrique externe et comporte deux trajets d'écoulement (122) indépendants l'un de l'autre reliant deux parties adjacentes parmi les quatre parties d'ouverture, et quatre tubes (103) reliés respectivement aux quatre parties d'ouverture. Chaque tube comporte, sur une partie d'extrémité vers la partie cylindrique externe, une partie de rigidité élevée (136) qui est plus rigide que les autres parties du tube et est moins rigide que la partie cylindrique externe.
Patent WO-2022118376-A1 (WO)
Inventor: SIDDHARTHA CHATLY
IPC: A44B19/36
Filed: 2020-12-01
Abstract: 上側上止と下側上止との間の間隙にスライダーを通し易くすることができる分割上止を提供する。本発明は、左右のファスナーストリンガー（４０ａ、４０ｂ）と、左右のファスナーストリンガー（４０ａ、４０ｂ）間を開閉するためのスライダー（５０）とを備えるスライドファスナー（１００）における左右のファスナーストリンガー（４０ａ、４０ｂ）の一方に設ける分割上止（１）に係る。分割上止（１）は、上側上止（１０）と、上側上止（１０）に対して間隙（３０）をおいて下方に配置される、スライダー（５０）のエレメント案内路（５４）を通過可能な下側上止（２０）とを備える。分割上止（１）は、間隙（３０）を通じて、一方のファスナーストリンガー（４０ｂ）に対してスライダー（５０）を取り付け及び取り外しが可能である。間隙（３０）は、上側上止（１０）の下側面（１３ａ）と下側上止（２０）の上側面（２３ａ）によって規定される。上側上止（１０）の下側面（１３ａ）と下側上止（２０）の上側面（２３ａ）とは表裏方向表側へと相互に次第に離れ、間隙（３０）を表裏方向表側へと広げる。