Upright vacuum cleaner

Abstract

An upright vacuum cleaner includes an upper casing housing an electric motor having an output shaft and a suction fan mounted upon the output shaft. A cylindrical cyclone chamber is situated beneath the suction fan and has an inlet port, a longitudinal axis of the cyclone chamber being co-linear with the output shaft. There is a cylindrical dust receptacle situated beneath the cyclone chamber, a longitudinal axis of the dust receptacle being co-linear with the output shaft. A funnel delimits the cyclone chamber from the dust receptacle and a pickup head is situated beneath the dust receptacle and communicates with the inlet port via a duct.

1 . An upright cyclone vacuum cleaner comprising: 
 an upper casing housing an electric motor having an output shaft and a suction fan mounted upon the output shaft,    a cylindrical cyclone chamber situated beneath the suction fan and having an inlet port, a longitudinal axis of the cyclone chamber being co-linear with the output shaft,    a cylindrical dust receptacle situated beneath the cyclone chamber, a longitudinal axis of the dust receptacle being co-linear with the output shaft,    a funnel delimiting the cyclone chamber from the dust receptacle, and    a pickup head situated beneath the dust receptacle and communicating with the inlet port via a duct.    
     
     
         2 . The vacuum cleaner of  claim 1  wherein the pickup head has a rotary brush therein caused to rotate my airflow induced by the suction fan.  
     
     
         3 . The vacuum cleaner of  claim 1  wherein the cyclone chamber includes an upper tube having a frusto-conical inlet opening.  
     
     
         4 . The vacuum cleaner of  claim 1  further comprising a pan attached to the dust receptacle.