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1. 发明授权

US3863503A Multispeed, chainless vehicle drive system 失效
标题翻译：多用途，无连接车辆驱动系统
公开(公告)号：US3863503A
公开(公告)日：1975-02-04
申请号：US35559273
申请日：1973-04-30
申请人： LOEB DAVID C , TRESTMAN ROBERT
发明人： LOEB DAVID C , TRESTMAN ROBERT
IPC分类号： B62M11/04 , B62M17/00 , F16H3/36 , F16H3/30
CPC分类号： F16H3/366 , B62M11/04 , B62M17/00 , Y10T74/1933 , Y10T74/19442
摘要： A multispeed, chainless bicycle drive and transmission system wherein the drive train includes a shiftable drive shaft connecting the pedal crank shaft and driving wheel by means of vertical gear wheels mounted transversely thereon having a multitude of concentric series of gear teeth for providing different drive or gearing ratios. The geared drive shaft is moved from one series of gear teeth to another on one or both of the gear wheels to change the gear ratio by means of two independently moving, splined, concentric shaft members which mate through contact gears with the selected gear teeth series. The splined shaft members are mounted within a tubular housing via three ball bushings which permits both longitudinal and rotational movement of the enclosed shaft members. A springloaded ball system is used to assure proper relative positioning of the splined shafts with respect to the selected gear teeth series.
摘要翻译：一种多速无链条自行车驱动和传动系统，其中传动系包括可移动的驱动轴，其通过横向安装的垂直齿轮连接踏板曲柄轴和驱动轮，其具有多个同心的一系列齿轮齿，用于提供不同的驱动或传动比率。齿轮传动轴在一个或两个齿轮上从一系列齿轮齿移动到另一个齿轮齿，以通过两个独立运动的花键同心轴构件来改变传动比，这些轴构件通过接触齿轮与选定的齿轮齿系列。花键轴构件通过三个球轴套安装在管状壳体内，这允许封闭轴构件的纵向和旋转运动。使用弹簧加载球系统来确保花键轴相对于选定的齿轮齿系列的适当的相对定位。

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