baber/WOPTO huggingface dataset:
Patent JP-2002166621-A (JP)
Title: Image processor
Inventor: TANIGUCHI SUSUMU
IPC: B41J29/10
Filed: 2000-11-30
Abstract: PROBLEM TO BE SOLVED: To obtain an image processor comprising an imaging section or an image reading section employing a structural member molded of a resin material in which imaging performance and image reading performance are sustained constantly by preventing distortion of the body effectively. SOLUTION: On the bottom face of a lower main structural member supporting the entirety of the image processor, a part grounding when the image processor is installed on a horizontal plane is provided. Flexure is suppressed below a predetermine level by providing protrusions slightly lower than a resilient member at appropriate positions on the bottom face remote from the grounding part and susceptible to flexure.
Patent JP-2002167275-A (JP)
Title: Method of manufacturing dielectric ceramic composition for microwave and dielectric filter
Inventor: ANZAI YUJI
IPC: H01B3/12
Filed: 2000-11-30
Abstract: PROBLEM TO BE SOLVED: To provide a method of manufacturing a dielectric ceramic composi tion or dielectric resonator which is excellent in balance among a dielectric constant, a temperature coefficient and no-load Q value, specially capable of controlling the temperature coefficient independently. SOLUTION: The manufacturing method of the dielectric ceramic composition for microwave or the dielectric resonator expressed by a composition formula (1-x)CaTiO3-x(A3ySm2/3-y)TiO3, [where, A is (NazLi1-z)] comprises controlling the highest temperature of heat treatment, and cooling speed in a heat treatment process to obtain the dielectric ceramic composition or the dielectric resonator having desirable temperature coefficient of a resonance frequency.
Patent JP-2002171570-A (JP)
Title: Mobile communication terminal
Inventor: HIRAI MASAHITO
IPC: H04W88/02
Filed: 2000-12-05
Abstract: PROBLEM TO BE SOLVED: To provide a mobile communication terminal that allows a user to recognize whether or not the mobile communication terminal is resident in a communication environment suitable for data communication. SOLUTION: This invention provides the mobile communication terminal that informs a user of the terminal about whether or not the communication environment of the mobile communication terminal is suitable for data communication in the case of starting the data communication as result of the comparison of e.g. an RSSI(Receive Signal Strength Indication), a fluctuation range of the RSSI, and an idle slot with predetermined threshold values in order to solve the purpose above.
Patent JP-2002173747-A (JP)
Title: Metal-ceramics composite material having excellent strength and its production method
Inventor: TSUTO HIROYUKI
IPC: C22C1/10
Filed: 2000-12-06
Abstract: PROBLEM TO BE SOLVED: To provide a metal-ceramics composite material having excellent strength even in the case the content of ceramics is <=50 vol.%, and to provide its production method. SOLUTION: The metal-ceramics composite material having excellent strength uses ceramics powder or ceramics fiber as a reinforcing material, and aluminum or an aluminum alloy as a matrix. The aluminum alloy contains 2 to 8 wt.% Cu and 2 to 8 wt.% Mg.
Patent JP-2002172712-A (JP)
Title: Container made of paper for confectionery or the like and its molding method
Inventor: INOUE IKUKO
IPC: B65D5/44
Filed: 2000-12-07
Abstract: PROBLEM TO BE SOLVED: To make a container 1 made of paper for a confectionery or the like having much stereoscopic feeling, contrivance, changeability, handmade warmth and tenderness. SOLUTION: A method for molding the container made of paper for the confectionery or the like comprises the steps of forming eight paper materials 2 made of Japanese paper or the like in a rectangular parallelepiped shape, having a length (a) of a short side and a length of a long side of three times as large as that of the short side; aligning each two materials 2 in a parallel state at the short sides 4 of its ends or aligning the long sides 5 by deviating them by the (a); superposing the ends in an axial symmetry at an angular interval of 90 deg. at a connecting point A of the short sides 4 aligned at the distal ends, or a connecting point A of the short sides 4 deviated by the (a) from the distal end as a center; disposing them in a cross-state, adhering the superposed parts 2, bending the eight materials 2, respectively, so that a diagonal line of a rectangular equilateral right-angled triangle formed to having the length (a) of the connecting part of the crossing or parallel materials 2 with the point A of the material 2 as a folding line 6 and a square part surrounded by the folding line 6 of the materials 2 is used as the bottom 7 of the container 1, and the materials 2 are molded vertically to the bottom 7 to a stereoscopic shape; and superposing the molding pieces 8 of the eight materials in a wickerwork state, and knitting them.
Patent JP-2002179582-A (JP)
Title: TESTOSTERONE-5alpha-REDUCTASE INHIBITOR
Inventor: RIN CHOKO
IPC: A61Q5/02
Filed: 2000-12-08
Abstract: PROBLEM TO BE SOLVED: To provide a testosterone-5α-reductase inhibitor safe for a living body and to provide a useful hair tonic cosmetic and a useful skin care preparation. SOLUTION: This testosterone-5α-reductase inhibitor is characterized by comprising at least one kind of extract extracted with a hydrophilic solvent or its mixture with water from crude drug(s) i.e., Aromatica (Camphora), Semen lini and/or Fructus litseae. And hair grower/hair cosmetic containing the inhibitor and a treating agent high excellent in prevention and treatment of prostatomegaly are also provided.
Patent JP-2002178583-A (JP)
Title: Recording apparatus
Inventor: OTA TOSHIHIRO
IPC: B65H5/06
Filed: 2000-12-11
Abstract: PROBLEM TO BE SOLVED: To sufficiently remove and clean the recording liquid adhering to the teeth of a spur only by the spur without providing a spur cleaner. SOLUTION: The spur 1 coming into contact with the recording surface of a sheet to feed the sheet is equipped with a gear body 11 having a plurality of ruling pen-like teeth 11a, which suck the ink on the recording surface from the tip edges of the teeth coming into contact with the sheet by a capillary phenomenon, formed to the peripheral edge part thereof and absorbing members 14 and 14 absorbing the ink sucked up by the teeth 11a.
Patent JP-2002179841-A (JP)
Title: Rubber composition
Inventor: KONNO TOMOHISA
IPC: C08L9/00
Filed: 2000-12-12
Abstract: PROBLEM TO BE SOLVED: To provide a rubber composition that can give a vulcanized rubber having excellent processability, small rolling resistance and sufficient abrasion resistance. SOLUTION: The objective rubber composition comprises (1) the conjugated diene rubber-including rubber component that wears an olefinic unsaturated nitrile monomer units and an aromatic vinyl monomer units at a specific ratio as the recurring units, (2) an inorganic filler, for example, silica or the like, (3) a compound bearing at least one of polymerizable unsaturated group and a specific functional group, for example, an amino group. This compound preferably has a molecular weight of >=200. The conjugated diene rubber may have at least one of polymerizable unsaturated group and a specific functional group, for example, an amino group and may be oil-extended with an extender preliminarily.
Patent JP-2002182882-A (JP)
Title: Image forming system, image forming method, image forming apparatus, storage medium and program
Inventor: MATSUKUBO TAKESHI
IPC: B41J21/00
Filed: 2000-12-13
Abstract: PROBLEM TO BE SOLVED: To provide an image forming system which can appropriately manage image data which a user arbitrarily stores for a future charging system when giving print service. SOLUTION: In the image forming system where respective units are connected to a network, a client 103 applies to an electronic money server 300 for settlement through the network. When settlement approval is received in the electronic money server 300, image data to which individual information is added is transferred to a file server 700 and is stored. When individual information inputted from the client 103 is recognized to be pertinent to individual information registered in a unit managing server 102, image data corresponding to individual information is taken out from the file server 700. Image data which is taken out is transferred to color MFP 104 and black/white MFP 105 and the image of color/black-white pages is formed.
Patent JP-2002178478-A (JP)
Title: Laminate
Inventor: NAGAE HIROSHI
IPC: B32B27/36
Filed: 2000-12-13
Abstract: PROBLEM TO BE SOLVED: To provide a laminate capable of being faithfully molded into a shape of the die face of a molding die in the case of forming such a film key by pressure forming and vacuum forming that many projecting parts are equipped and the projecting parts function as a push buttom part excellent in tactile sensation and operability of a hand and a finger. SOLUTION: The laminate 1 is formed into a structure of two layers, in which a rigid plastic layer 2 and a silicone rubber layer 3 are strongly bonded. The rigid plastic layer 2 is composed of 50-80 wt.% polycarbonate and 20-50 wt.% polybutylene terephthalate. When the rate of polycarbonate becomes less than 50 wt.%, dimensional stability is made bad and when the same exceeds 80 wt.%, the rigid plastic layer is weaken in fatigue. Thickness of the rigid plastic layer 2 is formed into 10-500 μm preferably about 20-300 μm by considering strength at a time of work and use. Thickness of the silicone rubber layer 3 is formed into about 10-1000 μm preferably 30-500 μm by considering tactile sensation or the like.
Patent JP-2001190530-A (JP)
Title: Roentgen diagnostic system
Inventor: ENAARU RIINDAASON
IPC: A61B6/00
Filed: 2000-12-13
Abstract: PROBLEM TO BE SOLVED: To provide a Roentgen diagnostic system having the relatively simple and compact constitution, having a support without an inconvenient stand part under an examination table in relation to the examination table and being provided with a stand rotated by accompanying a virtual isocenter maintained in a vertical directional side position in two directions by 90 deg. from a position adjusted to a head. SOLUTION: An arm unit is composed of at least two arms installed on different planes. Free end parts of these arms are mutually rotatably joined with the vertical directional axis as the center. The length of the arms is set so that a curved support is rotated by the arms with an intersection formed when crossing a center line of an examination table as the center in a stand for adjusting the center of a center radioactive ray to a head part in relation to an interval between a position of the vertical directional axis of a pedestal, the rotational axis of a column and the center radioactive ray on an X-ray tube and a receptor.
Patent JP-2002178347-A (JP)
Title: Solution film-making method, film obtained thereby, and polarizing plate and liquid crystal display using the same
Inventor: TSUJIMOTO TADAHIRO
IPC: G02B5/30
Filed: 2000-12-14
Abstract: PROBLEM TO BE SOLVED: To prevent the decomposition and conversion of a solvent to be adsorbed/recovered in a solution film-making method. SOLUTION: Dope in which cellulose triacetate, etc., are dissolved is cast from a casting die 23 on a casting band 22. On the band 22, the dope is dried into a film 24. Gas generated in the process is condensed by a condenser 31 to be recovered as a solvent 32. Gas is generated from the film 24 when it is dried in a drying zone 12. The gas, after being adsorbed by adsorption layers 43, 44, and 45, is used for nitrogen gas 46 heated at 100 deg.C to desorb an adsorbed substance, which is condensed/liquefied by a condenser 47 to be recovered as a solvent 48. Since the nitrogen gas 46 is used when the solvent 48 is desorbed from the adsorption layer 43, 44, and 45, the solvent 48 is not decomposed/ converted and can be used again.
Patent JP-2002186226-A (JP)
Title: Motor and method of assembling divided cores thereof
Inventor: SHIBATA YOSHIYUKI
IPC: H02K1/18
Filed: 2000-12-18
Abstract: PROBLEM TO BE SOLVED: To provide a motor which can reduce a cogging torque by reducing a magnetic resistance resulting from a gap formed between an internal stator core 12 and an external stator core 17. SOLUTION: After the internal stator core 12 which is deformed like a conical spring, laminated and is provided with a coil 16 is engaged within the external stator core 17 which is accommodated and laminated within a cylindrical case 20, the conical spring shape is returned to the original shape. Consequently, a gap between the internal stator core 12 and external stator core 17 can be reduced.
Patent JP-2002183781-A (JP)
Title: On-road vehicle-to-vehicle communication system
Inventor: KATOU HIROMASA
IPC: H04W4/04
Filed: 2000-12-19
Abstract: PROBLEM TO BE SOLVED: To provide an on-road vehicle-to-vehicle communication system capable of surely preventing an illicit communication between a question device and an on-vehicle device adjacent to the question device with which the question device is to communicate in a limited space without enlarging an antenna. SOLUTION: Each question device transmits a question signal at the same timing by use of a carrier wave of the same frequency. In an area Yc where the communication areas Ya and Yb natural to the respective question devices (areas with a receiving power of a threshold Pth or more) are mutually overlapped, and the vicinity thereof, uplink signals (question signals) are mutually interfered to largely deteriorate DU ratio, causing an area Xc where the DU ratio is below the lower limit value Ldu of DU ratio necessary for communication. The communication with the question device is thus allowed only in the areas Xa and Xb where the DU radio is above the lower limit value Ldu of the natural communication areas Ya and Yb, and these areas are perfectly separated with the incommunicable area Xc.
Patent JP-2002192587-A (JP)
Title: Mold unit for molding optical disk
Inventor: KAYAHARA TOSHIHIRO
IPC: B29D17/00
Filed: 2000-12-25
Abstract: PROBLEM TO BE SOLVED: To provide a mold unit for molding an optical disk capable of making a mold temperature around a product cavity uniform so as to enable improving of a dimensional accuracy of the disk. SOLUTION: The mold unit for molding the optical disk comprises a cavity block 15 and a core block 24 provided oppositely to the block 15. The product cavity is formed between the block 15 and the block 24. The blocks 15 and 24 respectively have temperature regulating channels 19 and 25 for distributing cooling liquids to the blocks 15 and 24. Distances from the surfaces 3A and 3B of the cavity to a communicating passage are formed long at the passage to lower the cooling capability per unit area of the cavity 4 by the channels 19 and 25. A heat conduction length is increased to lower the cooling capability, and hence the surface temperatures of the surfaces 3A and 3B of the cavity can be optimally regulated.
Patent JP-2002196538-A (JP)
Title: Electrostatic charge image developing toner and method for producing the same
Inventor: MARIKO HIROYUKI
IPC: G03G9/087
Filed: 2000-12-27
Abstract: PROBLEM TO BE SOLVED: To provide an electrostatic charge image developing toner which ensures incompatible properties such as low temperature fixability and anti-hot offsetting property in a well-balanced state. SOLUTION: A powdery resin (A) adjusted to 10-100 μm average particle diameter, a resin (B) having a lower melting temperature (T1/2 temperature by a contrast load extrusion type capillary rheometer) than the resin (A) and a colorant are mixed to prepare a mixture comprising the resins and the colorant. The mixture is melted and kneaded to prepare a molten kneaded material containing the colorant uniformly dispersed in the resins. The molten kneaded material is cooled and comminuted to produce the objective electrostatic charge image developing toner.
Patent JP-2002198562-A (JP)
Title: Group iii nitride semiconductor light emitting diode and its manufacturing method
Inventor: HOSHINA KOJI
IPC: H01L33/32
Filed: 2000-12-27
Abstract: PROBLEM TO BE SOLVED: To provide a group III nitride semiconductor light emitting diode of high performance in which a high quality silicon substrate of low cost is used, by solving the problem where a group III nitride semiconductor light emitting diode having high light emitting intensity is not obtained, since the light from a light emitting part is absorbed in a silicon substrate in the conventional group III nitride semiconductor light emitting diode in which silicon is used as the substrate. SOLUTION: A reflecting layer having a semiconductor multilayer laminated structure constituted of laminate of boron phosphide and gallium phosphide nitride is arranged between a silicon substrate and a light emitting part. Consequently, the light from the light emitting part is reflected in a light lead-out direction.
Patent JP-2001164680-A (JP)
Title: Method of manufacturing thermal insulating concrete product and concrete product
Inventor: HORIGUCHI YUKINORI
IPC: E04B1/76
Filed: 2000-12-28
Abstract: PROBLEM TO BE SOLVED: To stretch and bring an impervious foaming body 2 in contact with an outer face or inner and outer faces of a concrete product 4 integrally in one process when manufacturing the concrete product. SOLUTION: An impervious foaming body 2 is brought into contact with one or both of opposing faces 1', 1' of opposing forms 1, 1, and ready-mixed concrete is charged between an inner face 2' of the foaming body 2 on one side and the opposing face 1' of the form 1 on the other side or between the inner faces 2' and 2' of the foaming body 2 which come into contact with the opposing faces 1', 1' of both forms 1, 1 to prevent the foaming body 2 from floating up.
Patent JP-2002207759-A (JP)
Title: Information retrieval method
Inventor: MIYANAGA TSUKASA
IPC: G06F3/0487
Filed: 2000-12-30
Abstract: PROBLEM TO BE SOLVED: To provide an information retrieval method by the Internet enhanced in convenience. SOLUTION: In this information retrieval method 1 for retrieving information by the Internet, a retrieval point 3 of retrieval item for clicking retrieval information in map information or other pattern information 2 with railroad or subway route map, other route maps or the like entered therein, and the retrieval point 3 is clicked, whereby advertisement for help information or other information 4 can be retrieved. Accordingly, since the retrieval can be performed by the pattern information using the Internet, and the retrieval result can be provided with the pattern information, this method has effects that information can be quickly retrieved effectively utilizing the function of information equipment such as personal computer, the convenience for job hunter, company or the like can be enhanced, and information can be retrieved as quickly as possible.
Patent JP-2001512900-A (JP)
Title: ドーパント発生装置と方法
IPC: C23C16/448
Filed: 1998-08-05
Abstract: (57)【要約】
【解決手段】金属とガスとの反応生成物であるドーパントガス種を発生する方法と装置である。金属原料集合体（１６）が用意され、ガスと接触されてドーパントガス種を発生する。ドーパントガス種は化学蒸着反応器（３２０）に通されるか、またはイオン化室（４６）に通されて、イオン注入のためのイオン化種を発生する。
Patent JP-2001518643-A (JP)
Title: 画像作成装置における濃度ロスの補正方法およびそのシステム
IPC: G03D13/00
Filed: 1998-03-23
Abstract: (57)【要約】
本発明は、複数のフォトサーモグラフィック要素を次々と現像しながら、画像作成装置における濃度ロスを補正する方法およびシステムである。１つの実施の形態において、本発明は、複数のフォトサーモグラフィック要素のそれぞれを現像しながら、放散された熱エネルギーを補正する。別の実施の形態において、本発明は、各現像サイクル間に、加熱された部材から、圧力ローラのような間接的に加熱された部材に伝導される熱エネルギーを補正する。本発明は、画像作成が連続しているときに、画像作成装置の構成部品を現像することによって蓄積される熱エネルギーのより正確な特徴付けができる。このように、より均一な濃度は、画像作成が連続している際のフォトサーモグラフィック要素の全てに対して達成される。
Patent JP-2001520495-A (JP)
Title: 回転電気機械
IPC: G01R31/34
Filed: 1998-09-29
Abstract: (57)【要約】
分配ネットワークまたは伝送ネットワークに直接接続されるように設計された回転界磁回路を有するタイプの回転電気機械を提供する。該電気機械の少なくとも１本の巻線は、少なくとも１本の導体と、導体を囲む、半導体特性を有する第１の層と、第１の層を囲む固体絶縁層と、絶縁層を囲む、半導体特性を有する第２の層とからなる。さらに、回転界磁回路の地絡事故検出用に検出回路（１６）が設けられている。また、界磁巻線の対地抵抗を監視する方法及びこのような機械の回転子温度の判断方法についても開示される。
Patent JP-2001526916-A (JP)
Title: 腹膜透析用可搬蠕動ポンプ
IPC: F04B43/12
Filed: 1998-10-30
Abstract: (57)【要約】
移動腹膜透析転送処置用ポンプ・アセンブリは、大容量蠕動ポンプ（１００）を駆動するように係合された携帯電源（１２０）を含む。ポンプのカセット（２５０）は、容器（２００）と、容器内に位置する内蔵部分、留置腹膜透析カテーテルに接続する患者側部分（１６０）、ならびに１つの単一コンパートメント・バッグ・アセンブリとするとよい腹膜透析溶液用貯蔵および伝達システムと接続可能な対向部分（１５０）を含むチューブ（１４０）と、内蔵部分を通過した溶液の伝達を選択的に閉塞および許可する安全バルブ（２６０）と、好ましくは患者側部分に沿って介装され、患者に向かって流れている腹膜透析液から空気および粒子を濾過し、腹膜透析液を実質的に自由に流し、未濾過の透析液を患者から遠ざけることができるフィルタとを備える。
Patent JP-2002501998-A (JP)
IPC: E05D5/12
Filed: 1998-01-29
Abstract: The invention concerns a hinge pin (101) for mounting a mobile panel on a fixed door frame comprising a frame hinge (103) wherein is provided an axial cylindrical bore (120) open at least at one of its ends, a strap hinge (102) wherein is provided an axial cylindrical housing (108) open at least at one of its ends, and a cylindrical male connector (104) linking in rotation the strap hinge (102) to the frame hinge (103). The invention is characterised in that the frame hinge (103) bore (120) contains an elastic member (130) capable, when it is compressed, of exerting on the male connector (104) a thrust force for balancing the mobile panel weight, which is applied via said strap hinge (102) on said male connector (104). The invention also concerns the use of said pin hinge for mounting a rotating panel and the door unit comprising it.
Patent JP-2002501855-A (JP)
Title: 自動車用のブレーキ力昇圧装置
IPC: B60T13/52
Filed: 1999-01-26
Abstract: (57)【要約】
本発明は、特に自動車に使用するためのブレーキ力伝達装置に関し、ブレーキ力伝達装置の制御点（４）を感知または検知するための手段（１０）を有し、この手段（１０）と共に制御点（４）を感知する信号が発生できる。本発明は、小さいスペースしか必要でなく、新たな安全可能性を開く高度な動作のブレーキ力伝達装置を製造することを可能にする。
Patent JP-2002504717-A (JP)
Title: エレクトロルミネッセントデバイス
IPC: G09G3/32
Filed: 1999-02-05
Abstract: (57)【要約】
有機発光デバイスは、複数の有機発光ピクセルを含む有機発光領域と、各々が個々のピクセルに関連付けされ、該ピクセルへの電力を切り換えるスイッチ手段と、関連付けされたピクセルからの発光が実質的に連続的に見えるようにするのに十分な周波数で第１の低電力モードと第２の高電力モードを繰り返すように各スイッチ手段を駆動する駆動手段とを備え、低電力モードに対する高電力モードの期間を可変としてピクセルの平均輝度を変化させる。
Patent JP-2002504397-A (JP)
Title: 投与の行為を指示する装置および方法
IPC: G16H20/17
Filed: 1999-02-26
Abstract: (57)【要約】
投与の行為を指示する装置には、通常規則正しく投与可能な薬剤の投与の行為を登録するインジケータが備えられる。指示装置（２）は、投与の行為に関連して生じる薬剤投与ユニット（１）の機械的移動を検出するように設けられる検出手段（７）を含む。指示装置（２）は、指示装置（２）における投与の行為に関する情報を登録するように設けられる登録手段を含む。指示装置は薬剤投与ユニット（１）に取付可能な、または薬剤投与ユニットが配置可能である別のユニットであり、たとえば糖尿病治療におけるインシュリンの投与を監視するために使用可能である。
Patent JP-2002505475-A (JP)
Title: データのイベント駆動処理
IPC: G06F11/34
Filed: 1999-02-05
Abstract: (57)【要約】
イベント・データ（１２０）を処理し、応答を発生し、必要な時にはある位置へ送信すべき応答プロファイルを発生可能なモジュールへ、イベント・モジュール（１０５）がイベント・データを送信することを可能とするデータ処理システム（１０）。応答は、処理モジュール（１０６、１０７）で処理を実行しデータを収集するため１つ以上のスクリプト（１２１）を実行するシステム（１０）により発生される。スクリプト（１２１）の実行により応答が発生されると、収集したデータを基にスクリプトは自己変更する。システム（１０）は必要な変更を認識し、変更に対する応答を動的に発生する。応答プロファイルを他の位置へ送信しなければならない場合、応答プロファイルは受信位置が認識するフォーマットとなる。
Patent JP-2003526082-A (JP)
Title: 血球の計数を行う方法
IPC: G01N33/86
Filed: 1999-03-05
Abstract: (57)【要約】
ａ）サンプルチャンバ（１０）を準備し、ｂ）感受性着色剤を全血のサンプルと混合し、ｃ）混合サンプルをサンプルチャンバ中に挿入し、ｄ）混合サンプルを連鎖（３０）と小窩（３２）がサンプル内に生成するまでの期間静止的に保持し、そしてｅ）小窩（３２）内に配置された標的成分を評価するという工程を含む、実質的に無希釈の抗凝固化全血のサンプルの成分を評価する方法を提供する。
Patent JP-2002506276-A (JP)
IPC: H01M50/55
Filed: 1999-02-17
Abstract: An electrochemical cell is disclosed, having a sealed prismatic housing with two opposing, internal side surfaces defining therebetween an internal cavity having width and length. One of the side surfaces defines a convex arc, and the other of the side surfaces has a center portion opposing the convex arc of the one side surface, and features extending toward the one side surface and straddling the convex arc. An electrode stack is contained within the internal cavity of the housing, having positive and negative electrode sheets arranged in face-to-face relation. The electrode stack is arranged between the side surfaces of the housing such that the stack is retained between the one side surface and the extending features of the other side surface, and deflected to follow the convex arc to maintain contact pressure between the positive and negative electrode sheets. The stack is thus stretched across an inwardly crowned surface of the housing. The invention can, by maintaining good intersheet contact pressure within the stack, provide good overall active material utilization (for high cell capacity) and can help to inhibit housing distension of cells with broad sides. Methods of construction are also disclosed.