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    Method for manufacturing a single chainring
    1.
    发明申请
    Method for manufacturing a single chainring 审中-公开

    公开(公告)号：US20180187766A1

    公开(公告)日：2018-07-05

    申请号：US15726685

    申请日：2017-10-06

    申请人： SR SUNTOUR INC.

    发明人： Yoshihisa Iwasaki

    IPC分类号： F16H55/30 ,  B21D53/26

    CPC分类号： F16H55/30 ,  B21D53/261 ,  B21D53/86

    摘要： A method for manufacturing a single chainring (1) which prevents a chain (3) from easily falling off and is low-cost is provided. The method for manufacturing a single chainring (1) comprises a step of forming neutral teeth (A) having a thickness allowing the neutral teeth (A) to be smoothly insertable into an inner link gap of a chain (3) and further comprises one or both of a step of forming outward teeth (B) by bending a part of the neutral teeth (A) outwardly in such a manner that the outward teeth (B) are insertable into an outer link gap of the chain (3) and a step of forming inward teeth (C) by bending a part of the neutral teeth (A) inwardly in such a manner that the inward teeth (C) are insertable into the outer link gap of the chain (3).

    CASSETTE AND BICYCLE WHEEL ASSEMBLY
    4.
    发明申请
    CASSETTE AND BICYCLE WHEEL ASSEMBLY 审中-公开
    CASSETTE和BICYCLE轮组件

    公开(公告)号：US20170056955A1

    公开(公告)日：2017-03-02

    申请号：US15348815

    申请日：2016-11-10

    申请人： Praxis Works LLC

    发明人： David M. Earle ,  Ding-Jiun Lin

    IPC分类号： B21D53/28 ,  B21D53/86

    CPC分类号： B21D53/28 ,  B21D53/26 ,  B21D53/86 ,  B23K2101/00 ,  B60B1/003 ,  B60B1/041 ,  B60B1/042 ,  B60B27/0026 ,  B60B27/023 ,  B60B27/047 ,  B60B31/005 ,  B62M9/10 ,  Y10T29/49462 ,  Y10T29/49465 ,  Y10T29/49481 ,  Y10T29/49506

    摘要： A cassette for a bicycle may include a plurality of sprocket portions joined together into a single unit. The cassette may include a cavity formed in the large end of the cassette. A related manufacturing method may include joining a first generally planar sprocket portion having a plurality of connector portions extending transverse to the plane of the first sprocket portion, to a second generally planar sprocket portion, e.g., by fusing at least one of the connector portions to the second sprocket portion.

    摘要翻译： 用于自行车的盒可以包括连接在一起成单个单元的多个链轮部分。 盒可以包括形成在盒的大端中的空腔。 相关的制造方法可以包括将具有横向于第一链轮部分的平面延伸的多个连接器部分的第一大致平面的链轮部分连接到第二大致平面的链轮部分，例如通过将至少一个连接器部分熔接到 第二链轮部分。

    Unitary crown fork assembly and method of fabrication
    5.
    发明授权
    Unitary crown fork assembly and method of fabrication 有权
    单位冠叉组件及其制造方法

    公开(公告)号：US08770609B2

    公开(公告)日：2014-07-08

    申请号：US12719358

    申请日：2010-03-08

    申请人： Christopher P. Dodman ,  Stephen B. Metz ,  Morten Kristiansen

    发明人： Christopher P. Dodman ,  Stephen B. Metz ,  Morten Kristiansen

    IPC分类号： B62K21/04

    CPC分类号： B21D53/86 ,  B21J5/00 ,  B21K21/00 ,  B62K21/02 ,  B62K21/04 ,  B62M3/00 ,  B62M3/003 ,  Y10T74/2164

    摘要： A bicycle is provided having a unitary steering tube-crown member and a unitary crank arm-spindle member. A multistage aluminum 3D forging process is used to form the unitary members. This may allow the fabrication of components with substantially hollow interior areas to reduce weight, reduce part count while maintaining high strength and ductility. The multistage 3D forging process provided also allows the combination of multiple components into a single unitary part.

    摘要翻译： 设置有具有整体转向管冠部件和单一曲柄臂主轴构件的自行车。 使用多级铝3D锻造工艺来形成整体成员。 这可能允许制造具有基本上中空的内部区域的部件以减轻重量，减少部件数量同时保持高强度和延展性。 提供的多级3D锻造工艺还允许将多个组件组合成单个单一零件。

    Oil hydraulic bulge-forming process for the manufacture of front fork blank of single unit type for bicycles
    6.
    发明授权
    Oil hydraulic bulge-forming process for the manufacture of front fork blank of single unit type for bicycles 失效
    用于制造自行车单机型前叉坯料的油压凸起成形工艺

    公开(公告)号：US4305269A

    公开(公告)日：1981-12-15

    申请号：US101254

    申请日：1979-12-07

    申请人： Isao Kimura

    发明人： Isao Kimura

    IPC分类号： B62K21/02 ,  B21D26/033 ,  B21D26/035 ,  B21D53/86 ,  B21D39/08

    CPC分类号： B21D53/86 ,  B62K21/02 ,  Y10T29/49805

    摘要： A straight tubular ferrous blank of a circular section, starting material of the invention is deformed in its section along its whole length and bent to form a fork with two legs or blades, the thus formed tubular fork is set in a sectional forming die of top and bottom molds; the die has a concave corresponding to a protuberant socket and has also at its end an opening into which a mandrel having a recess corresponding to the same protuberant socket is introduced; the tubular fork set in the sectional die is subjected to the oil hydraulic bulge-forming process together with the mandrel simultaneously forced into the opening to bulge-form the socket, and the desired front fork blank of the single unit type is obtained.

    摘要翻译： 本发明的圆形截面原料的直管状铁质坯料沿其整个长度在其截面中变形，并弯曲形成具有两个腿或刀片的叉，将如此形成的管状叉子设置在顶部的截面成形模具中 和底模; 模具具有对应于突出插座的凹部，并且在其端部处还具有开口，其中引入具有对应于相同突起插座的凹部的心轴; 设置在截面模具中的管状叉与心轴同时被迫进入开口以凸起形成插座而经受油压凸起成形处理，并且获得单一类型的期望的前叉坯料。

    Method of forming a claw portion of the front wheel journal fork of a bicycle
    7.
    发明授权
    Method of forming a claw portion of the front wheel journal fork of a bicycle 失效
    形成自行车车轮前轮的分类方法

    公开(公告)号：US3689969A

    公开(公告)日：1972-09-12

    申请号：US3689969D

    申请日：1970-07-29

    申请人： TSUNODA JITENSHA KABUSHIKI

    发明人： TSUNODA MASASHI

    IPC分类号： B21D53/86 ,  B21K1/76 ,  B23P13/00

    CPC分类号： B21K1/76 ,  B21D53/86

    摘要： A method of forming a claw portion of the front wheel journal fork of a bicycle, including the steps of axially squeezing a metal pipe, having one end of reduced section, between a pair of chuck electrodes, the electrode seating said reduced section end of the pipe having a die cavity of a desired shape for an intermediate form of the claw portion, while simultaneously applying an electric potential to said electrodes, whereby to soften and form said reduced section end of the pipe to a shape conforming to that of the die cavity, pressing said shaped end of the pipe to flatten said end, shearing said flattened end to a desired claw contour, and punching a hole and a slot in said flat and contoured claw portion.

    摘要翻译： 一种形成自行车的前轮轴颈叉的爪部的方法，包括以下步骤：在一对卡盘电极之间轴向挤压具有减小截面的一端的金属管，所述电极将所述减速部的端部 管，其具有用于中间形式的爪部的所需形状的模腔，同时向所述电极施加电位，由此软化并形成所述管的所述缩小部分端部至符合模腔的形状 按压所述管的所述成形端使所述端部平坦化，将所述扁平端部剪切成所需的爪轮廓，并在所述平坦且成形的爪部中冲压孔和槽。