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An electromotively driven hand or impact drilling machine with adjustable rpm
An electromotively driven hand or impact drilling machine with adjustable rpm
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机译:可调转速的电动手摇或冲击钻床
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摘要
In a hand-held electric power tool, a combination including an electromotor, and an electric circuit for controlling the speed of the motor, including a pressure switch for controlling the motor speed, a first control potentiometer operatively associated with said pressure switch for adjusting the motor speed from zero up to a predetermined motor operating speed.
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