초록 ▼

This invention is concerned with a machine and/or system as well as a method of operation and an assembly whereby a sweeping unit may be quickly converted into a scrubbing unit and vice versa. The system is capable of operation either in a sweeping mode or a scrubbing mode and is also adaptable to i

This invention is concerned with a machine and/or system as well as a method of operation and an assembly whereby a sweeping unit may be quickly converted into a scrubbing unit and vice versa. The system is capable of operation either in a sweeping mode or a scrubbing mode and is also adaptable to include a vacuum wand assembly when the unit is to be operated in its sweeping mode.

대표청구항 ▼

A method of operating a surface cleaning machine in either a sweeping mode or a scrubbing mode for either sweeping or scrubbing a surface to be cleaned, the machine having a mobile frame, a rotatably mounted brush on the frame with a clean solution tank, a recovery solution tank, a pick-up squeegee

A method of operating a surface cleaning machine in either a sweeping mode or a scrubbing mode for either sweeping or scrubbing a surface to be cleaned, the machine having a mobile frame, a rotatably mounted brush on the frame with a clean solution tank, a recovery solution tank, a pick-up squeegee for dirty solution, a vacuum system for preventing dusting during the sweeping mode and for picking up dirty solution from the floor by the squeegee during the scrubbing mode, and a hopper for receiving debris, including the steps of fixing the recovery tank on the rear of the frame when the unit is operating in either mode, interchangeably mounting the clean solution tank and the debris hopper on the front of the frame in operative position opposite the brush, the clean solution tank during the scrubbing mode and the debris hopper during the sweeping mode, alternately connecting the vacuum system to either the debris hopper to prevent dusting during the sweeping mode or to the recovery tank to draw dirty solution from the floor by the squeegee to the recovery tank during the scrubbing mode, and raising the squeegee out of contact with the surface when the unit is operating in the sweeping mode. gCM,23. In a combination sweeping and scrubbing machine, a mobile frame, a rotatably mounted cylindrical brush on the frame for removing soilage and for propelling debris from a surface to be cleaned, a debris hopper on the frame with an opening therein for receiving debris propelled by the brush when the machine is operated as a sweeper, a filter and vacuum system on the frame for reducing dusting around the cylindrical brush, means for removably mounting the debris hopper on the frame, a clean solution tank adapted to be mounted in place of the debris hopper when the debris hopper is removed to convert the machine to a scrubber, a recovery tank and squeegee on the frame for picking up dirty solution when the machine is being operated as a scrubber, and a connection between the vacuum system and the recovery tank for communicating vacuum from the vacuum system through the recovery tank and squeegee, the clean solution tank and the debris hopper being sized such that said tank and debris hopper may be manually handled by an operator without auxiliary mechanical lift equipment.