发明授权
US4317291A Rotatable drum drive 失效
可旋转鼓驱动

Rotatable drum drive
摘要:
A device for treating solid and/or liquid materials comprises a drum driven for rotation about a horizontal axis by means of an endless chain.An expensive toothed rim surrounding the drum is avoided, as it is possible that the chain engages a toothless portion of the drum periphery.
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