发明授权
US5860614A Coaxial reel drive mechanism 失效
同轴卷盘驱动机构

Coaxial reel drive mechanism
摘要:
A drive mechanism for driving independently a first and a second coaxial reel, uses only a single rotatable driving unit for driving both coaxial reels. Independent drive is achieved by reversing the rotation of the driving unit.
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