초록 ▼

This invention is concerned with a machine in the nature of a scrubber for removing dirt, grime, etc. from a surface to be cleaned and includes a mobile machine with a scrub brush mounted for rotation about a generally vertical axis with a housing therefor which is pivotally mounted and concentric w

This invention is concerned with a machine in the nature of a scrubber for removing dirt, grime, etc. from a surface to be cleaned and includes a mobile machine with a scrub brush mounted for rotation about a generally vertical axis with a housing therefor which is pivotally mounted and concentric with the scrub brush drive. The brush, brush drive, brush housing and squeegees which are mounted on the brush housing, also make up a brush head assembly that is raised and lowered as a unit.

대표청구항 ▼

In a machine for removing soilage from a surface, a mobile frame and means for propelling it, a tool drive comprising a motor and a motor mount therefor attached to the frame, a disk surface cleaning tool connected to the tool drive disposed for rotation about a generally upright axis, means for rai

In a machine for removing soilage from a surface, a mobile frame and means for propelling it, a tool drive comprising a motor and a motor mount therefor attached to the frame, a disk surface cleaning tool connected to the tool drive disposed for rotation about a generally upright axis, means for raising and lowering the tool between a raised inoperative position for traveling and a lowered operative position for working, a tool housing around the tool which approaches the surface in the working position of the tool and is raised above the surface in the raised traveling position of the tool, a rotatable mounting for the tool housing concentric about the axis of the tool so that the tool housing may be rotated for at least a portion of a revolution about the upright axis independent of the tool and tool drive and the tool housing is free to circumferentially orient itself independently of movement of the mobile frame, an arcuate vacuum chamber disposed around on the order of 180°of the periphery of the tool housing and defining a pick up for dirty scrubbing solution, and friction means engaging the surface causing the tool housing to automatically orient itself in response to movement of the mobile frame because of the force applied to it by the friction means so that the vacuum chamber is always in a trailing position.