Surface cleaning apparatus

Abstract

A surface cleaning head comprises a front hard floor cleaning brush and a rotatable carpet cleaning brush positioned rearward of the front hard floor cleaning brush, wherein the front hard floor cleaning brush extends to the hard surface floor when the surface cleaning head is positioned on the hard surface floor, and wherein the front hard floor cleaning brush engages at least a portion of an inner surface of a forward portion of the brush chamber

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of the filing date of U.S. Provisional Patent Application Ser. No. 62 / 559,151, filed Sep. 15, 2017, the specification of which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present subject matter of the teachings described herein relates to a surface cleaning apparatus which may be operable as at least one of a sweeper, a vacuum cleaner, a hard floor cleaning apparatus and an extractor and optionally, the surface cleaning apparatus may be operable as two or more of these apparatus.BACKGROUND OF THE INVENTION[0003]Extractors are a type of surface cleaning apparatus which have a reservoir to apply a cleaning solution to, e.g., carpet and a nozzle to extract the used cleaning solution from the carpet. A separation system is provided to separate the used cleaning solution, which is entrained in dirty air that is drawn into the extractor, and to store the used cleaning solution in a use...

AI Technical Summary

Benefits of technology

The patent describes a surface cleaning apparatus that has two treatment stages. The first stage removes liquid from an air stream, while the second stage removes solid particulate matter from the air stream. The second treatment stage is positioned above the first treatment stage, which reduces the energy requirement of the surface cleaning apparatus. The recovered liquid can be transferred to a separate collection container, which may be remote from the treatment unit. This reduces the weight of the handle of the apparatus and helps lower its center of gravity when in use.

Problems solved by technology

Typically, the nozzle of an extractor is not designed to remove large particulate matter from carpet (e.g., popcorn) and accordingly, a carpet may have to be cleaned using a vacuum cleaner prior to using an extractor to clean the carpet.

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