发明授权
US4721179A Double swing-arm motorcycle frame 失效
双摆臂摩托车架

Double swing-arm motorcycle frame
摘要:
A motorcycle frame in which both the front and rear wheels are supported by respective pairs of swing arms pivotally supported by two side frames. Each side frame has a front and a rear bracket and a connecting structure extending upwardly and longitudinally over the engine. The connecting structure may be integral with both of the brackets or may be a pipe frame bolted to the brackets.
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