Floor scrubber apparatus with vacuum motor protection

A scrubber apparatus for cleaning floors, the apparatus comprising a base assembly disposable upon a floor and a handle assembly extending upwardly from the base assembly, the handle assembly pivotally connected to the base assembly whereby the handle assembly is disposable in an upright position in relation to the floor, or releasable for pivotal movement in relation to the floor, the apparatus further comprising:

• a hollow exoskeleton, on the handle assembly, having a vacuum transfer port;
• a vacuum motor for reducing pressure within the exoskeleton;
• a hollow recovery tank, on the handle assembly, for receiving spent cleaning solution and comprising:
• a main body from which a plurality of chambers distends rearwardly and upwardly, the plurality of chambers comprising a pair of laterally spaced and separated lower chambers, a pair of laterally spaced and separated medial chambers, and a pair of laterally spaced and separated upper chambers;
• a vacuum port in fluid communication with the vacuum transfer port;
• and
• a solution intake port;
• a clean solution reservoir from which an unused cleaning solution is applicable to the floor;
• a bottom intake port in the base assembly;
• and
• means for conveying spent cleaning solution from the bottom intake port to the solution intake port;
• wherein a reduced pressure within the exoskeleton induces, via the vacuum port, reduced pressure within the recovery tank, thereby sucking spent cleaning solution from the floor, via the bottom intake port and the means for conveying spent cleaning solution, to the solution intake port;
• and
• wherein, when the handle assembly is in the upright position, spent solution received progressively into the recovery tank serially fills first a lower portion of the main body and the at least one lower chamber, then fills a middle portion of the main body and the at least one medial chamber, and then fills an upper portion of the main body and the at least one upper chamber;
• and
• as the handle assembly is pivoted increasingly from the upright position toward the horizontal, any spent solution in the at least one lower chamber or the lower portion of the main body pourably flows into the at least one medial chamber.

A scrubber apparatus for cleaning floors, the apparatus comprising a base assembly disposable upon a floor and a handle assembly extending upwardly from the base assembly, the handle assembly pivotally connected to the base assembly whereby the handle assembly is disposable in an upright position in relation to the floor, or releasable for pivotal movement in relation to the floor, the handle assembly comprising:

• a recovery tank for receiving spent cleaning solution removed from the floor via the base assembly, the recovery tank comprising:
• a tank vacuum port defined in a top part of the recovery tank;
• and
• a main body from which a plurality of chambers distends upwardly, the plurality of chambers comprising at least one lower chamber, at least one medial chamber, and at least one upper chamber;
• wherein the at least one lower chamber comprises a pair of laterally spaced and separated lower chambers, the at least one medial chamber comprises a pair of laterally spaced and separated medial chambers, and the at least one upper chamber comprises a pair of laterally spaced and separated upper chambers.