baber/WOPTO huggingface dataset:
Patent JP-2013511475-A (JP)
Title: 化合物、その一定の新形態、その医薬組成物ならびに製剤化および使用の方法
IPC: A61P35/00
Filed: 2010-11-23
Abstract: 式Ａの化合物およびその医薬品として容認できる塩、ならびに式Ａの化合物の結晶性形態ＩおよびＩＩ。また、こうした化合物を製剤化するための方法、その化合物を含む医薬組成物、およびそれを使用するための方法。
Patent JP-2013514844-A (JP)
Title: 輸送効率が高められた、ロック・システムを備える格納可能な注射器
IPC: A61M5/32
Filed: 2010-12-10
Abstract: プランジャと、針アセンブリと、これらを備える格納可能な注射器。プランジャはプランジャ部材と、針回収後にブランじゃ部材の移動を防止または妨害するロックバネを有するプランジャ外側部とを備える。プランジャは、流体内容物の輸送後にプランジャ外側部の更なる移動を防止または妨害すべくバレルと係合する別のロック部材を更に備える。プランジャ部材は、回収のための針アセンブリの格納可能な針と係合するプランジャ・シールを有する。格納可能な針は、カニューレと、流体をカニューレに効率的に配流すべくプランジャ・シールの流体管と協動する複数の流体チャネルを備える針体とを備える。針保持器は、針体に解放可能に連結される複数の逆刺のついたアームを含む。これによりタブを備えるイジェクタは、針保持器からの格納可能な針の解放を促進し、圧縮バネ駆動により回収する。
Patent JP-2013515988-A (JP)
Title: 複数の制御装置を有する組み込みシステムにおける最適なハードウェア／ソフトウェア分割の生成方法
IPC: G06F9/48
Filed: 2009-12-23
Abstract: 本発明は、分散型組み込みシステムの自動合成のためのコンピュータに実装された方法に関する。システムによって処理されるタスクは、複数の処理ユニットを有するハードウェア構造に、タスクの既定の時間制限を満たすようにマッピングされる。方法は、（ａ）タスクを、以下のサブステップを用いて複数の処理ユニットに割り当てるステップであって、サブステップが、（ａａ）処理ユニットにタスクを割り当てるステップと、（ｂｂ）出力イベント密度を決定するステップと、（ｃｃ）次のタスクに向かう出力密度と閾値とを比較し、イベント密度が閾値未満の場合、次のタスクを同じ処理ユニットに割り当て、イベント密度が閾値以下の場合、次のタスクを別の処理ユニットに割り当てるステップと、（ｄｄ）すべてのタスクが処理ユニットに割り当てられるまで、（ａａ）から（ｄｄ）のステップを繰り返すステップと、を含むステップと、（ｂ）処理ユニットに対する所与のタスク割り当てのコストが、既定のソリューション基準を満たしているか否かをチェックするステップと、（ｃ）処理ユニットに対する新たなタスクの割り当てに関し、タスクが既定のソリューション基準を満たすまで、ステップ（ａ）から（ｂ）を繰り返すステップと、（ｄ）タスクに割り当てられた処理ユニットのオペレーショナルシステムのプロセスに、タスクを割り当てるステップと、（ｅ）処理ユニットのオペレーショナルシステムのプロセスに対する所与のタスク割り当てが、タスクの既定の時間基準を満たしているかをチェックするステップと、（ｆ）タスクの既定の時間基準が満たされている場合、処理ユニットのオペレーショナルシステムのプロセスに対する所与のタスク割り当てに関連するコストを計算するステップと、（ｇ）処理中のソリューションのコストが既定のソリューション基準を満たすまで、処理ユニットへの新しいタスク割り当てに関し、ステップ（ａ）から（ｃ）を繰り返すか、あるいは、割り当てられた処理ユニットのオペレーショナルシステムのプロセスへの新しいタスク割り当てに関し、ステップ（ｄ）から（ｆ）を繰り返すステップと、を含む。 【選択図】図１
Patent JP-2013515607-A (JP)
Title: 精密計量装置
IPC: A23L2/00
Filed: 2010-12-21
Abstract: 第１のチャンバ及び第２のチャンバと、第１のチャンバ内に配置されて第１のチャンバを混合部と駆動部とに区分するピストンと、第２のチャンバ内に配置され第２のチャンバ内の濃縮部を画定する第２のピストンとを備える装置を含む、精密計量装置が提供される。第２のチャンバの濃縮部は第１のチャンバの混合部と液体的に連通している。この提供される計量装置を利用した、濃縮物を溶媒に加える方法も提供される。
Patent JP-2013517046-A (JP)
Title: インプラント用アバットメント
IPC: A61C8/00
Filed: 2011-02-23
Abstract: 本発明は、インプラント用アバットメントに関し、より具体的には、閉じた接着部において溝を形成することを通してフィクスチャーとのシーリングを改善することができるインプラント用アバットメントに関する。本発明の一つの態様に係るインプラント用アバットメントは、スクリュー部と、閉じた接着部と、頭部とを具備する。スクリューのネジは、スクリューによって結合されるべきフィクスチャー内にアバットメントが挿入されることを可能とするように、スクリュー部において形成される。閉じた接着部は、フィクスチャーのテーパー部に接触すべくフィクスチャーのテーパー部内に挿入されるようにスクリュー部の上部においてテーパー状にされる。頭部は、補綴物の結合を可能とすべく、閉じた接着部の上部において形成される。特に、この場合、閉じた接着部はフィクスチャーのテーパー部との閉じた接着性を強化すべく複数の溝を有し、複数の溝は、フィクスチャーのテーパー部と接触する領域において周方向に沿って形成される。本発明によれば、閉じた接着部において形成された溝を有するアバットメントを提供することによってフィクスチャーで締結する場合、閉じた接着部の局部が溝に変形される。このため、アバットメントとフィクスチャーとの間の閉じた接着性を増大させることによって、シーリング効果を改善することができる。
Patent JP-2013518304-A (JP)
Title: 光信号管理用光デバイスモジュール式パッケージングｖ型溝体及びその光デバイスモジュール
IPC: G02B6/42
Filed: 2010-12-22
Abstract: 【課題】   光デバイスのカップリング効率と生産効率を向上させる。 【解決手段】   光信号管理用光デバイスモジュール式パッケージングＶ型溝体とその光デバイスモジュールを提供する。Ｖ型溝体は本体を含み、その本体内に１つまたは複数のＶ型溝を備え、本体内にＶ型溝の両側壁と、光信号伝送孔システムを備えている。光信号伝送孔システムは、Ｖ型溝夾角中心線と垂直または平行な光信号伝送孔を含み、Ｖ型溝の夾角θ１は９０度±１０度である。Ｖ型溝体によってパッケージングされた光デバイスモジュールは、前記Ｖ型溝体を含み、Ｖ型溝のＶ型溝開口、水平伝送孔、垂直伝送孔が、それぞれ光デバイスおよび外部光信号インターフェースと接続され、Ｖ型溝の両側の壁に、光管理レンズが貼られ、単心双方向（３方向）光デバイスモジュールを構成する。本体と濾波板支持体の一体化構造により、カップリング効率と生産効率が大いに高まり、特に、ＦＴＴＨ光モジュールの設計に適している。   【選択図】図１
Patent JP-2013522672-A (JP)
Title: 耐久性が向上した光学シート及びこれを含むバックライトユニット
IPC: F21V5/04
Filed: 2011-03-10
Abstract: 本発明は、耐久性が向上した光学シート及びこれを含むバックライトユニットに関し、より詳細には、レンズ部及び非レンズ部を含み、上記非レンズ部は第１の基材部、第２の基材部、及び上記第１の基材部と第２の基材部を接着するための接着層を含む光学シート；及び複数の光源を含む光源部と、上記光源部に隣接して配置され上記光源部で生成された光の経路を制御する導光板と、上記導光板の光出射面の上部に配置される拡散シートと、上記拡散シートの上部に配置され、レンズ部及び非レンズ部を含み、上記非レンズ部は第１の基材部、第２の基材部、及び上記第１の基材部と第２の基材部を接着するための接着層からなる光学シートと、を含むエッジ（ｅｄｇｅ）型バックライトユニット；に関する。本発明による光学シートは、接着層によって接着された２層の基材部を含むことにより熱によるシートのしわ（ｗａｖｅ）が改善されモジュラスが増加し耐久性が向上した光学シートが得られる。 【選択図】図１
Patent JP-2014134151-A (JP)
Title: Engine-rotation-condition detection method and engine-rotation-condition detection device
Inventor: AKUSAWA TAKESHI
IPC: F02D45/00
Filed: 2013-01-10
Abstract: PROBLEM TO BE SOLVED: To provide an engine-rotation-condition detection device highly accurately detecting a rotation condition of an engine in a vehicle equipped with an alternator.SOLUTION: An engine-rotation-condition detection device 100 for detecting a rotation of an engine in a vehicle equipped with an alternator 21 includes a phase terminal output acquisition unit 10 which acquires values of voltages at a P1 and a P2 terminals in the alternator 21, and an engine rotation condition detection unit 11 which detects a rotation condition of the engine on the basis of time sequence of the two voltages.
Patent JP-2014138021-A (JP)
Title: Alignment device and alignment method using the same
Inventor: YOKOYAMA AKIRA
IPC: H01S5/022
Filed: 2013-01-15
Abstract: PROBLEM TO BE SOLVED: To provide an alignment device which can highly accurately align a cylindrical lens, a micro lens array arrayed one-dimensionally or the like with respect to a light source part emitting laser beam, and to provide an alignment method using the alignment device.SOLUTION: An alignment device 100 aligns a collimate element 11 for collimating laser beam from a light source part 10 emitting laser beam from a plurality of light-emitting points arrayed one-dimensionally, with respect to the light source part 10. The alignment device 100 includes: a screen 20 to which the laser beam emitted from the collimate element is projected; an imaging device 21 which captures a plurality of images of the projected laser beam; a control part 22 which generates a control signal for alignment by analyzing the shapes of the plurality of captured images; and a movable part 13 which adjusts a relative position and a relative angle between the light source part and the collimate element in accordance with the control signal. The alignment method includes a process for rotating the collimate element in a plane along an emission end surface of the light source part so as to separate the images which are projected to the screen and overlapped with each other.
Patent JP-2014136815-A (JP)
Title: Production method of galvanized steel sheet
Inventor: HOSHINO KATSUYA
IPC: C23C22/53
Filed: 2013-01-16
Abstract: PROBLEM TO BE SOLVED: To provide a production method of a galvanized steel sheet having simultaneously excellent defatting property, even in a severe alkali defatting condition having small slide resistance during press molding, a low temperature and a short line length.SOLUTION: An oxide layer formed on the surface of a galvanized steel sheet is subjected to a neutralization treatment by using an alkaline aqueous solution containing P ion as much as 0.01 g/L or more and colloidal dispersion particles as much as 0.01 g/L or more. The alkaline aqueous solution preferably contains at least one kind or more of phosphorus compounds selected from among a phosphate, a pyrophosphate and a triphosphate, and at least one kind or more of colloidal dispersion particles selected from among Ti, silica, Pt, Pd, Zr, Ag, Cu, Au and Mg.
Patent JP-2014136942-A (JP)
Title: Double window and connection member
Inventor: HOMMA SUGURU
IPC: E06B7/14
Filed: 2013-01-18
Abstract: PROBLEM TO BE SOLVED: To provide a double window allowing an outer window frame and an inner window frame to be easily positioned and to be connected with each other while achieving the weight saving, and the like.SOLUTION: A double window includes an outer window frame arranged on an outdoor side and an inner window frame arranged on an indoor side. The double window is provided with: a seal material for stopping water between the outer window frame and the inner window frame in four peripheries on outer peripheral sides of an outer opening formed by the outer window frame and an inner opening formed by the inner window frame; and a connection member which connects the outer window frame and the inner window frame on the outer peripheral side of the seal material. The connection member has: a temporary fixed part temporarily fixed to the inner window frame; a positioning part for positioning the outer window frame with respect to the inner window frame; and a guide part for guiding a screw screwed into the outer window frame in a depth direction to penetrate also through the inner window frame together.
Patent JP-2013178753-A (JP)
Title: Image processing device and method
Inventor: KUNIEDA HIDETARO
IPC: G06T3/40
Filed: 2013-01-18
Abstract: PROBLEM TO BE SOLVED: To provide an image processing device and method capable of acquiring resized images over a plurality of hierarchies with a simple configuration while suppressing the reduction in performance of image data recording.SOLUTION: The image processing device generates an image with additional effective pixels by performing processing of giving the additional effective pixels by using a pixel at the end in a scanning direction of input image data in a first hierarchy to extend the input image data in a horizontal scanning direction. Then, the image processing device filters the generated image with additional effective pixels to generate image data in a second hierarchy into which the input image data is reduced, and filters the image data in the second hierarchy to generate image data in a third hierarchy.
Patent JP-2014147137-A (JP)
Title: Storage battery system
Inventor: KAMATA SEIJI
IPC: G01R19/00
Filed: 2013-01-25
Abstract: PROBLEM TO BE SOLVED: To provide a storage battery system capable easily deciding the cause of a communication fault when the communication failure occurs.SOLUTION: A storage battery system 1 comprises: a storage battery 10 having battery modules 11a to 11d; voltage monitor circuits 20a to 20d arranged corresponding to battery modules 11a to 11d and for monitoring voltages of battery modules; and a battery controller 40 for controlling discharge and charge of the storage battery 10 based on the monitoring information obtained from the communication with voltage monitor circuits 20a to 20d. The battery controller 40 comprises: an abnormal position determination part 40a that when communication failure occurs between voltage monitor circuits 20a to 20d, calculates an estimated output voltage of the storage battery 10 by using the monitoring information obtained from one of voltage monitor circuits 20a to 20d before the communication failure, and determines the abnormal position of the communication failure by comparing the estimated output voltage with the output voltage Vo of the storage battery 10 after the communication failure.
Patent JP-2014143971-A (JP)
Title: Method of producing sheet-like cell culture
Inventor: SAKAMOTO KENTA
IPC: C12N5/077
Filed: 2013-01-30
Abstract: PROBLEM TO BE SOLVED: To provide a method of producing stably a sheet-like cell culture.SOLUTION: The invention is a method of producing a sheet-like cell culture of a cell, the method including the step of mixing a material including a cell adhesion component and a cell for suspension and disseminating the suspended cell. After mixing a material including a cell adhesion component and a cell for suspension, the suspended material may be allowed to stand and also may be washed with a proper solution before the dissemination of a cell.
Patent JP-2014150308-A (JP)
Title: Image signal processing device and method
Inventor: YOSHIDA ATSUSHI
IPC: H04N7/01
Filed: 2013-01-31
Abstract: PROBLEM TO BE SOLVED: To provide an image signal processing device capable of avoiding trouble to simultaneously read the same pixel data stored in memories by multiple processes without enlarging the sizes of the memories for storing image signals.SOLUTION: Address control units 31-34 are arranged to correspond to line memories 11-14 for storing pixel data Sin1-Sin4 respectively included in multiple areas in an image signal Sin. The address control units 31-34 generate address control signals Sac1-Sac4 for reading the pixel data from the line memories 11-14. A timing control unit 10 controls reading timing so as to prevent timing for the address control units 31-34 to read pixel data of a predetermined address from the other line memories other than the corresponding line memory from overlapping with timing for the other address control units corresponding to the other line memories to read pixel data from the other line memories.
Patent JP-2014147567-A (JP)
Title: Pachinko game machine
Inventor: KANEKO SACHIHISA
IPC: A63F7/02
Filed: 2013-02-01
Abstract: PROBLEM TO BE SOLVED: To provide a game machine with rich varieties of game property.SOLUTION: When determining a variable display period of identification information, a Pachinko game machine comprises a plurality of types of variable display period candidate groups formed by grouping one or a plurality of types of variable display period candidates, and is configured to define any of the plurality of types of variable display period candidate groups as a target group, and to select one variable display period candidate in the variable display period candidates included in the object group, as a variable display period of the identification information. The Pachinko game machine allows a player to determine any of the plurality of types of variable display period candidate groups as the object group at his/her discretion.
Patent JP-2014151395-A (JP)
Title: Saw blade and method of its application
Inventor: HASHIMOTO TOMOYUKI
IPC: B23D61/18
Filed: 2013-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a saw blade which can prolong the fatigue life of a belt-like base material in the saw blade comprising cutters with abrasive grains anchored by electrodeposition and garrets alternately at one side edge of the belt-like base material, and which can improve the precision of cutting a cross section.SOLUTION: The saw blade 1, which comprises cutters 5 with abrasive grains anchored by electrodeposition and garrets 7 alternately at one side edge of a metallic the belt-like base material 3, keeps the ratio of the length of the cutter 5 in the longer direction of the base material 3 to the length of the garret 7 in a range of 60:40-10:90, or in the range of 50:50-20:80. The cutter 5 keeps the apex equipped with a linear plane part parallel with the base material 3 in the longer direction. The angle θ between the tangential plane M at a position of crossing of a convex curve part R1 appropriately connected to the bottom of the garret 7 with the linear plane part with respect to the curve part R1 and an extension part of the linear plane part is in the range of 0°-40°or 10°-30°.
Patent JP-2014150767-A (JP)
Title: Method of determining hla-a*02 group
Inventor: KISHIMOTO TOMOKO
IPC: G01N33/50
Filed: 2013-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a method for determining typing of an HLA-A*02 group with little ambiguity in a simple manner.SOLUTION: The method of determining an HLA-A*02 group is characterized by determination based on a typing result for one or more bases selected from the group consisting of (a) the 208th base, (b) the 228th base, (c) the 274th base, (d) the 726th base, (e) the 739th base and (f) the 784th base with A (adenine) of the start codon of the HLA gene as the first base in the genomic DNA of a subject.
Patent JP-2014153608-A (JP)
Title: Developing device and image forming apparatus including the same
Inventor: TANIGUCHI RYO
IPC: G03G15/09
Filed: 2013-02-12
Abstract: PROBLEM TO BE SOLVED: To provide a developing device capable of suppressing the occurrence of an image defect caused by the clogging of a developer.SOLUTION: Developing devices 3a to 3d comprise: a developing roller 31; a magnetic roller 30; a supply conveyance screw 23b and a stirring conveyance screw 23a; and a developing container 20. A peeling pole 45 for peeling the developer from the surface of the magnetic roller 30 is provided in the magnetic roller 30. An opposing wall 50 is provided in a position facing the peeling pole 45 at a predetermined distance from the magnetic roller 30. A distance between the end in the direction of A1 of the magnetic roller 30 and the opposing wall 50 is larger than a distance between the end in the direction of A2 of the magnetic roller 30 and the opposing wall 50.
Patent JP-2014154084-A (JP)
Title: Packaging body having ic tag
Inventor: YAGISHITA TOSHIAKI
IPC: G06K19/077
Filed: 2013-02-13
Abstract: PROBLEM TO BE SOLVED: To provide a packaging body having an IC tag that allows easy discrimination of opened packaging, through securely breaking the IC tag when opened and making a response of the opened IC tag different from that before opening.SOLUTION: An IC tag 4 is attached to an exterior film 3 having an opening tape 2 that packages interior container packaging. The IC tag is obtained through forming an adhesion layer 9 on one surface of an inlet 8 including an inlet base material 5, an antenna 6 formed on the inlet base material, and an IC chip 7. The IC tag is attached to the exterior film while interposing the adhesion layer. The inlet crosses the opening tape.
Patent JP-2014156069-A (JP)
Title: Laminated polyester film
Inventor: HIRAKI TOSHIHIRO
IPC: B32B27/36
Filed: 2013-02-16
Abstract: PROBLEM TO BE SOLVED: To provide a laminated polyester film which has a performance capable of preventing bleeding out of a coloring material even under severe heating conditions, and can be suitably used for applications which use a coloring material, for example, for sticking on an automobile window, X-ray blueing, a display, etc.SOLUTION: There is provided a laminated polyester film which has a coating layer formed from a coating liquid containing an amine-based coupling agent on at least one surface of a polyester film containing a coloring material.
Patent JP-2014157320-A (JP)
Title: Display device and lighting system
Inventor: HATA MAKOTO
IPC: H05B37/02
Filed: 2013-02-18
Abstract: PROBLEM TO BE SOLVED: To provide a display device capable of achieving a stable low luminance display without complicating the structure and information processing and an illumination device used for this display device.SOLUTION: A control group 90 comprises low gradation controlling means that generates illumination control data J which is bit data for selecting a sub-frame SF in which a light source 11 shines from an input signal, and display control data K which is bit data for selecting the sub-frame SF which turns on to drive for every pixel from the input signal, and when a luminance of the image required by the signal is a predetermined value or lower, invalidates a lower bit of at least either the illumination control data J or the display control data K and reduces the number of grayscale levels of the light intensity or the number of grayscale levels of the luminance of the image.
Patent JP-2014156749-A (JP)
Title: Press-in construction method of sheet pile
Inventor: KASHIMOTO TAKAHIKO
IPC: E02D7/00
Filed: 2013-02-18
Abstract: PROBLEM TO BE SOLVED: To provide a press-in construction method of a sheet pile, easy in installing a chuck, and capable of fixing a sheet pile upper end part by the chuck, without reversely operating an auger machine.SOLUTION: A plurality of rotatingly driven drilling shafts 4 and 5 are arranged in a cross-sectional elliptic support pipe 3, and chucks 7 and 8 are respectively provided in an upper part on one side surface 3a side and the other side surface 3b side of the support pipe 3, and eccentric drilling bits 9 and 10 extractable from the inside of a foundation are installed in a tip part of the respective drilling shafts 4 and 5 via dowm-the-hole hammers 11 and 12 so that a bit body does not collide with the sheet pile 6 after completing press-in of the sheet pile, and the sheet pile 6 is supported by the support pipe 3 by using a multi-shaft drilling device 1 being the substantially same as a sheet pile width in a maximum width of a composite locus circle formed so as to partially overlap by rotation of the eccentric drilling bits 9 and 10, and an upper end part is fixed by the chuck 7, and the sheet pile 6 is pressed in, while drilling the foundation by the rotary striking action of the respective eccentric drilling bits 9 and 10 struck by the down-the-hole hammers 11 and 12.
Patent JP-2014160904-A (JP)
Title: Settlement system and settlement method
Inventor: ITO YOSHIHIKO
IPC: H04M15/16
Filed: 2013-02-19
Abstract: PROBLEM TO BE SOLVED: To allow individual communication providers to acquire information required for settlement in response to information that can circulate within a current specified range.SOLUTION: In a settlement system 10, an SIP server 1 acquires an incoming/outgoing number from a received call generation signal and acquires information on an incoming/outgoing provider from a number solution server 4 by using the incoming/outgoing number. The SIP server 1 refers to settlement information DB 2 by using information on the incoming/outgoing number and the incoming/outgoing provider and acquires a connection pattern corresponding to the information on the incoming/outgoing number and the incoming/outgoing provider. The SIP server 1 acquires information on the provider taking part in communication except for the incoming/outgoing provider, a charge setting provider and a charging rate, which are mentioned in the acquired connection pattern. Settlement charging devices 3 of the individual providers taking part in communication calculate network use charges and request the network use charges from the charge setting provider. The settlement charging device 3 of the charge setting provider calculates the communication charge and checks whether the network use charge requested from the other provider is a correct amount or not.
Patent JP-2013093632-A (JP)
Title: Gaas semiconductor substrate and manufacturing method therefor
Inventor: NISHIURA TAKAYUKI
IPC: H01L21/304
Filed: 2013-02-21
Abstract: PROBLEM TO BE SOLVED: To provide a GaAs semiconductor substrate having a surface clean enough to remove impurities and oxides on the surface by at least thermal cleaning of a substrate.SOLUTION: In a GaAs semiconductor substrate 10, the constituent atom ratio Ga/As of all Ga atoms to all As atoms in the surface layer 10a of a GaAs semiconductor substrate 10, calculated by X-ray photoelectron spectroscopy by using the 3d electron spectrum of a Ga atom and an As atom measured under conditions that the photoelectron extraction angle θ is 10°, is 0.5-0.9, the ratio of As atoms bonded to O atoms to all Ga atoms and all As atoms (As-O)/{(Ga)+(As)} in the surface layer 10a is 0.15-0.35, and the ratio of Ga atoms bonded to O atoms to all Ga atoms and all As atoms (Ga-O)/{(Ga)+(As)} in the surface layer 10a is 0.15-0.35.
Patent JP-2014162247-A (JP)
Title: Power transmission device for saddle-riding hybrid vehicle
Inventor: KOBAYASHI YOSHITAKA
IPC: B62M6/60
Filed: 2013-02-21
Abstract: PROBLEM TO BE SOLVED: To provide a power transmission device for a saddle-riding hybrid vehicle, the device enabling suppression of a vehicle width.SOLUTION: A rear-wheel drive apparatus 75 includes: a rear wheel 27; a power transmission mechanism for transmitting power to the rear wheel 27 from one side thereof; a brake drum 84, disposed on the other side of the rear wheel 27, for constituting a drum brake device 29; and a power transmission mechanism that transmits power to the rear wheel 27 from the other side and includes a driven sprocket 67 and a one-way clutch 94. Further, the driven sprocket 67 is disposed on an outer circumference portion of the brake drum 84 via the one-way clutch 94, and the power is transmitted to the rear wheel 27 from the driven sprocket 67 via the one-way clutch 94 and brake drum 84.