Impact tool motor coil
作者： Edward Miller
DOI:
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摘要: A chiropractic adjustment tool or impact comprises a housing and an assembly disposed within the housing. The reciprocating rod single solenoid coil with at least two elements airspace between them.
lens.org 参考文章(2)
Frederick E Schoolfield, John C Owen, Automatic reciprocating electromagnetic motor. ,(1911)
John L Dinsmoor, Electrically-operated vibrator. ,(1912)