Patent ID: 7748079
Filing Date: 2010-07-06
Classification: A47L,B01D,B04C

Abstract:
1. A vacuum cleaner comprising: a housing having a sidewall and a top wall defining a cyclonic airflow chamber for separating contaminants from a dirt-containing airstream, the housing further comprising an inlet and an outlet in fluid communication with the cyclonic airflow chamber, and, optionally, a dirt cup with a sidewall; a nozzle housing including a main suction opening, the main suction opening being fluidly connected with the housing inlet; an airstream suction source fluidly connected to the main suction opening and to the cyclonic airflow chamber for transporting dirt-containing air from the main suction opening to the cyclonic airflow chamber, wherein the suction source is adapted to establish and maintain the dirt-containing airstream from the main suction opening to the housing inlet; and a fine contaminant separation member formed in at least one of the walls of the cyclonic airflow chamber and the sidewall of the dirt cup and comprising a plurality of apertures for separating fine contaminants from the dirt-containing airstream as the dirt-containing airstream flows by the fine contaminant separation member.