초록 ▼

An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the

An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the underside of the nozzle and into the cyclonic airflow chamber. The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container that defines the chamber. A main filter element filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media. A final filter assembly filters the suction airstream discharged by the suction source to ensure that the air discharged into the atmosphere is contaminant free, including those contaminants introduced into the airstream by the suction source itself.

대표청구항 ▼

An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the

An upright vacuum cleaner includes an upright housing section and a nozzle section. A cyclonic airflow dirt and dust separating chamber is defined in said upright housing section. A suction source pulls air and entrained dirt, dust, and other contaminants through a main suction opening formed in the underside of the nozzle and into the cyclonic airflow chamber. The cyclonic airflow chamber causes the suction airstream to travel in a cyclonic path such that the entrained contaminants are separated therefrom and deposited into a dirt container that defines the chamber. A main filter element filters residual contaminants from the suction airstream between the chamber and the suction source. The main filter element is preferably made from high-density polyethylene porous filter media. A final filter assembly filters the suction airstream discharged by the suction source to ensure that the air discharged into the atmosphere is contaminant free, including those contaminants introduced into the airstream by the suction source itself. pin fixed in an end of said spindle, and a web connecting said skirt and pin, b) a stub shaft fixed in said pin and extending therefrom, and c) a bearing assembly on an extending end of said sub shaft. 6. A one-piece plastic ferrule for a vacuum cleaner brushroll comprising a center hollow pin, a first radial wall extending outwardly from said pin, an axial wall projecting in an axially outward direction from said first radial wall to form a mouth at one end of said ferrule, a second radial wall extending outwardly from said axial wall, and a peripheral skirt projecting from said second radial wall, said skirt being spaced radially outwardly from said axial wall to form a recess which opens in an axial direction opposite to said mouth. 7. A ferrule as claimed in claim 6 including an annular seat at the bottom of said mouth around the opening of said hollow pin. 8. In a vacuum cleaner brushroll including a spindle having a longitudinal axis, tufts extending outwardly from said spindle, and end assemblies for rotatably mounting said brushroll in a vacuum cleaner, the improvement wherein at least one of said end assemblies comprises: a) a one-piece plastic ferrule having a skirt around an outer end portion of said spindle, a hollow pin fixed in an end of said spindle, and a web connecting said skirt and pin, b) a stub shaft fixed in said pin and extending therefrom, c) a bearing assembly on an extending end of said stub shaft, and d) said tufts of said brushroll extending outwardly through said skirt and angling beyond the adjacent end of said spindle to provide improved, wide angle edge cleaning. 9. The improvement as claimed in claim 8 wherein said outer end of said spindle has an axially extending lip, and wherein said web includes a wall spaced radially inwardly of said skirt, said lip being fitted between said skirt and said wall.