Motor-driven map holder
作者： Charles Cherwin
DOI:
关键词: Engineering 、 Control theory 、 Motor drive 、 Clutch 、 Simple (abstract algebra) 、 Control engineering 、 Electric motor
摘要: A roller-type map or shade holder is provided which operated by an electric motor. In one embodiment, a simple drive clutch arrangement decouples the motor shaft from roller when fully unwound rewound.
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