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发明名称
弧形自动调速省力自行车曲柄
摘要
一种弧形弹性曲柄,属于自行车曲柄及机械零件。仅用这样一个制造容易、成本低廉的曲柄,随时可安装于任何自行车,使骑车者不用任何操纵调控动作,即能随时自动调速、省力,不费大力即可顺利通过一般坡路、泥泞地、顶风、重载地段,其调速、省力的及时性超过电脑,构造简单绝妙,坚固耐久,对骑车者腿部肌肉和大脑有良好改善作用,骑时有飘然自得感觉,最益于身心健康,还兼一定的防撞减震功能。是一易普及受欢迎的实用发明。
申请公布号
CN1034173A
申请公布日期
1989.07.26
申请号
CN88105355.4
申请日期
1988.01.12
申请人
徐庭中
发明人
徐庭中
分类号
B62M3/04
主分类号
B62M3/04
代理机构
代理人
主权项
1、一种弧曲形曲柄,其特征在于主要以弹性材料制作,从中轴销孔一端逐渐向另一端弧形弯曲和变薄变小。
地址
江苏省南京珠江路东大影壁03栋204
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