VACUUM PUMP
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United States of America Patent
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app pub date -
Aug 11, 2017
filing date -
Aug 29, 2016
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Abstract
A vacuum pump comprises: a pump rotor rotatably driven by a motor and fastened to a shaft; a recessed portion formed at a suction-port-side end surface of the pump rotor; and a rotor balance correction member including a cover portion configured to cover the recessed portion.
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