Upright vacuum cleaner with spring loaded nozzle

Abstract

An upright vacuum cleaner includes a nozzle assembly, a canister assembly pivotally mounted to said nozzle assembly, a suction fan and motor and a biaser. The biaser has a first end that engages the nozzle assembly and a second end that engages the canister assembly. The biaser provides a positive downforce urging the forward end of the nozzle assembly toward the surface being cleaned.

1 . An upright vacuum cleaner, comprising: 
 a housing including a nozzle assembly and a canister assembly;    a suction generator carried on said housing;    a dirt collection vessel carried on said housing;    a torsion spring carried on said housing and biasing said nozzle assembly toward a surface to be cleaned.    
   
   
       2 . The vacuum cleaner of  claim 1  wherein said canister assembly is pivotally connected to said nozzle assembly.  
   
   
       3 . The vacuum cleaner of  claim 1 , wherein a rotary agitator is carried by said nozzle assembly.  
   
   
       4 . An upright vacuum cleaner, comprising: 
 a housing including a nozzle assembly and a canister assembly;    a pair of stub shafts for pivotally connecting said nozzle assembly with said canister assembly;    a suction generator carried on said housing;    a dirt collection vessel carried on said housing;    a torsion spring carried on said housing and biasing said nozzle assembly toward a surface to be cleaned.    
   
   
       5 . The vacuum cleaner of  claim 4 , wherein a rotary agitator is carried by said nozzle assembly.