发明授权
US4624026A Surface maintenance machine with rotary lip 失效
表面维修机带旋转唇

Surface maintenance machine with rotary lip
摘要:
A surface maintenance machine is disclosed including a body supported on a plurality of wheels and a power source for driving the wheels. The body carries a driven cylindrical brush and a powered rotary lip which cooperates with the brush to project dirt and debris into the hopper, each end of the rotary lip being supported for vertical movement.
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