| 摘要 |
A dental drive comprising a housing in or on which a prime mover is carried which has a rotatable output shaft. A drive shaft is journaled for rotation in the housing and provided with connecting means for connecting a dental tool therewith so that the tool is rotated by the drive shaft. A first epicyclic ball gear is mounted in motion-transmitting relationship with the output shaft to receive motion from the same, and at least one second epicyclic ball gear is mounted in motion-transmitting relationship with the first gear and with the drive shaft for receiving from the first gear motion which it transmits to the drive shaft.
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