Abstract: A walk-behind floor microscrubber apparatus. The microscrubber includes as main subassemblies an upright handle assembly pivotally connected to a base assembly. The handle assembly includes components for recovering a cleaning solution applied to the floor during cleaning operations. The base assembly houses electrically powered motors for driving scrubbing brushes, and a clean solution reservoir. Spent cleaning solution applied to the floor is sucked to a recovery tank on the handle assembly. The microscrubber has features for avoiding vacuum motor flooding, including a specially-shaped recovery tank. Chambers in the recovery tank capture used cleaning solution when the handle assembly is tilted, thereby reducing the likelihood of solution travelling back to the vacuum motor. The microscrubber also has an exoskeleton reserve tank in the handle assembly.

Abstract: An upright walk-behind microscrubber apparatus including a handle assembly connected to a base assembly, and featuring an improved handle function. The handle assembly is manipulated by the user to operate the apparatus. The apparatus provides a releasable, lockable, joint assembly that connects the handle assembly to the base assembly, whereby the handle assembly is pivotally connected to the base assembly. The joint assembly permits the handle assembly to be disposed in a fully released configuration in which the handle assembly is freely pivotal relative to the base assembly, or in a fully locked position in which the handle assembly is temporarily locked in an upright orientation. The joint assembly permits the base assembly to be released to a use position generally parallel to the floor, or releasably locked in a storage position generally parallel to the handle assembly but with the base assembly's scrubbing brushes removed from the floor.