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    Gear shifting mechanism for a bicycle transmission
    91.
    发明授权
    Gear shifting mechanism for a bicycle transmission 失效
    用于自行车传动的齿轮换档机构

    公开(公告)号：US3701333A

    公开(公告)日：1972-10-31

    申请号：US3701333D

    申请日：1971-08-25

    申请人： FICHTEL & SACHS AG

    发明人： SCHWERDHOEFER HANS JOACHIM

    IPC分类号： B62K23/06 ,  B62L3/02 ,  B62M25/00 ,  B62M25/04 ,  G09F9/00

    CPC分类号： B62K23/06 ,  B62L3/02 ,  B62M25/00 ,  B62M25/04 ,  Y10T74/20612

    摘要： The gear shifting lever for a multiple-speed hub in a bicycle is attached to the bicycle frame by two clamping plates which are connected by screws, and of which one carries the support for the lever. The support and the clamping members are covered by a housing having a viewing aperture for sequential display of indicia indicating the transmission ratio as the lever is pivoted, the indicia being arranged on a carrier coupled to the leer and guided between one of the clamping plates and the housing.

    摘要翻译： 用于自行车中的多速轮毂的换档杆通过两个由螺钉连接的夹紧板连接到自行车车架上，其中一个承载用于杠杆的支撑件。 支撑件和夹紧构件由具有观察孔的壳体覆盖，用于在杠杆枢转时顺序显示指示传动比的标记，该标记布置在联接到偏转器上的载体上并且在夹板之一和 住房。

    Variable ratio mini bike drive
    92.
    发明授权
    Variable ratio mini bike drive 失效
    可变比率微型自行车驱动

    公开(公告)号：US3625079A

    公开(公告)日：1971-12-07

    申请号：US3625079D

    申请日：1970-09-21

    申请人： HOFFCO INC

    发明人： HOFF STEPHEN J

    IPC分类号： B62M25/00 ,  F16H61/662 ,  F16H55/52

    CPC分类号： F16H61/66227 ,  B62M25/00 ,  B62M2701/0046

    摘要： A VARIABLE-RATIO BELT DRIVE FOR MINI BIKES AND THE LIKE, RESPONSIVE TO BOTH ENGINE SPEED AND DRIVE TORQUE. A NORMALLY-OPEN, VARIABLE-WIDTH DRIVER PULLEY RESPONSIVE TO ENGINE SPEED IS CONNECTED BY A V-BELT TO A NORMALLYCLOSED VARIABLE-WIDTH DRIVEN PULLEY WHICH INITIALLY GIVES A HIGH-REDUCTION DRIVE RATIO, E.G., 3:1. ONE FLANGE OF THE DRIVEN PULLEY IS MOVABLE AND URGED TOWARD THE FIXED FLANGE BY LOW-ANGLE CAMS AND A TORSION SPRING. A MOVABLE FLANGE OF THE DRIVER PULLEY IS URGED TOWARD THE FIXED FLANGE THEREOF BY WEDGE WEIGHTS ACTING BETWEEN THE MOVABLE FLANGE AND A REACTION CONE, SO THAT INCREASED SPEED CLOSES THE DRIVER PULLEY AND EXERTS BELT TENSION TO OPEN THE DRIVEN PULLEY, WHICH LOWERS THE DRIVE RATIO. HIGH TORQUE CAUSES THE CAMS TO CLOSE THE DRIVEN PULLEY AND OVERCOME THE SPEED-RESPONSE CONTROL, HENCE TO INCREASE THE DRIVE RATIO TO HANDLE THE INCREASED TORQUE AT HIGH ENGINE SPEED.