Nozzle assembly of vacuum cleaner

Details Nozzle assembly of vacuum cleaner Nozzle assembly of vacuum cleaner

2007-10-18

2009-06-23

Redding, David A (Department: 3723)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S365000, C015S369000

Reexamination Certificate

active

07549190

ABSTRACT:
A nozzle assembly of a vacuum cleaner is disclosed. The nozzle assembly includes a nozzle assembly body having an air inlet and an air outlet, a drum brush unit disposed in the nozzle assembly body in the vicinity of the air inlet, and having a drum brush disposed to brush away dirt or dust adhered to a surface to be cleaned while coming in rotation contact therewith, and a movable brush unit disposed in at least one of the front and the rear of the air inlet on an undersurface of the nozzle assembly body to pivot in an opposite direction to a moving direction of the nozzle assembly body thus to change a contacting angle to the surface to be cleaned in the range of a predetermined angle and then to brush away dirt or dust adhered to the surface to be cleaned, in moving of the nozzle assembly body.

REFERENCES:
patent: 3220043 (1965-11-01), Lampe
patent: 7150068 (2006-12-01), Ragner
patent: 2006/0277713 (2006-12-01), Sandlin et al.

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