Vacuum cleaner nozzle assembly having edge-cleaning ducts

Details Vacuum cleaner nozzle assembly having edge-cleaning ducts Vacuum cleaner nozzle assembly having edge-cleaning ducts

2006-11-14

2006-11-14

Snider, Theresa T. (Department: 1744)

Brushing, scrubbing, and general cleaning

Machines

With air blast or suction

C015S416000

Reexamination Certificate

active

07134164

ABSTRACT:
A vacuum cleaner nozzle assembly having at least one auxiliary suction opening along an edge thereof for picking up dirt and debris as the nozzle is moved along a wall or other obstruction. The auxiliary suction openings may be on both sides of the nozzle assembly, located proximate the ends of the primary intake opening. Auxiliary suction ducts connect the auxiliary intake openings to an internal plenum that also supplies vacuum to the main intake opening. The primary and secondary airflows merge in the plenum for withdrawal and collection. The nozzle assembly may be a power nozzle having a roller brush and a drive motor, or may be an unpowered carpet nozzle.

REFERENCES:
patent: 1782882 (1930-11-01), Rippey
patent: 3377647 (1968-04-01), Hill et al.
patent: 3942216 (1976-03-01), Minton
patent: 3942219 (1976-03-01), Johnson
patent: 4023234 (1977-05-01), Martinec et al.
patent: 6039817 (2000-03-01), Payne
patent: 6052866 (2000-04-01), Tuvin et al.

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