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1. 发明授权

US3779099A Bicycle drive assembly 失效
标题翻译：自行车组装
公开(公告)号：US3779099A
公开(公告)日：1973-12-18
申请号：US3779099D
申请日：1972-02-28
申请人： CYCLE DRIVE CORP
发明人： TRAMMELL E
IPC分类号： B62M3/02 , B62M3/04
CPC分类号： B62M3/02 , Y10T74/2167
摘要： A drive assembly for a physically propelled vehicle such as a bicycle having a crank arm operatively connected to a drive member rotatively mounted on a drive axis for rotating the drive member, and a one-way clutch connecting an advance-crank arm to the crank arm for pivotal movement of the advance-crank arm relative to the crank arm in only one direction. A pedal arm is operatively connected to the connector for substantially moving a portion of a connector with an alternating motion of less than 360* in a predetermined path. A resilient spring interconnects the connector and the advance-crank arm. The connector transmits the turning force to a pivot between the connector and advancecrank arm upon application of sufficient pedal force to overcome a predetermined loading of the resilient spring, the turning force being automatically transferred from the crank arm pin to the pivot of the advance-crank arm, and being automatically transferred back to the crank arm pin upon further rotation of the crank arm and advance-crank arm as the loading of the resilient spring balances and overcomes the pedal force. When the predetermined loading of the resilient spring is overcome, a change in the angle between the connector and advance-crank arm is achieved.
摘要翻译：一种用于诸如自行车的物理推进车辆的驱动组件，其具有可操作地连接到可旋转地安装在用于旋转驱动构件的驱动轴上的驱动构件的曲柄臂，以及将前曲柄臂连接到曲柄臂的单向离合器用于仅在一个方向上相对于曲柄臂的前进曲柄臂的枢转运动。踏板臂可操作地连接到连接器，用于在预定路径中以小于360°的交替运动实质上移动连接器的一部分。弹性弹簧将连接器和前进曲柄臂互连。连接器在施加足够的踏板力时将转动力传递到连接器和前置曲柄臂之间的枢轴上，以克服弹性弹簧的预定负载，转向力被自动地从曲柄臂销传递到前进的枢轴并且当弹性弹簧的装载平衡并克服踏板力时，随着曲柄臂和前进曲柄臂的进一步旋转，自动地将其转回到曲柄臂销。当弹性弹簧的预定载荷被克服时，可实现连接器与前曲臂之间的角度的变化。

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