Patent ID: 9579005
Date: 2017-02-28
CPC Classifications: A47L

Claim:
1. A portable cleaning apparatus adapted for use on a mobile cleaning cart, said apparatus comprising (a) a vacuum source module comprising a vacuum power unit positioned within an air leak-resistant vacuum source module housing, said vacuum source module housing having an inlet portal and an outlet portal; (b) a pre-filter module comprising a primary particle container positioned within an air-leak-resistant pre-filter module housing, said pre-filter module housing having a debris intake port and an outlet port, said primary particle container being releasably attached to the debris intake port, and said outlet port of the pre-filter module housing being disposed in fluid communication with the inlet portal of the vacuum source module; (c) a secondary filter module comprising a secondary filter positioned within an air-leak-resistant secondary filter module housing having an inlet aperture and an outlet aperture, the inlet aperture of said secondary filter module housing being disposed in fluid communication with the outlet portal of said vacuum source module housing so that air is directed to flow from the outlet portal of the vacuum generator housing through the inlet aperture of the secondary filter housing; said apparatus, being configured to provide a filtering airflow path, such that an air stream entraining debris, dust and contaminants is directed sequentially through the debris intake port, the primary particle container, the outlet port of the pre-filter module, the inlet and outlet portals of the vacuum source module housing, and the inlet and outlet apertures of the secondary filter module housing; and the apparatus, when energized, providing an A-weighted sound power level of less than about 75 dB, when measured at a distance of 6 feet using a methodology described in ASTM F1334-12.