Patent ID: 8046870

Claim:
A nozzle intended to be connected to a suction source, comprising: at least one suction aperture ( 7 A; 107 A; 207 A; 307 A) which communicates with the suction source; and plural gathering units, each gathering unit ( 3 ; 103 ; 203 ; 303 ) disposed close to each suction aperture ( 7 A; 107 A; 207 A; 307 A), each gathering unit ( 3 ; 103 ; 203 ; 303 ) having i) a peripheral surface ( 2 ; 102 ; 202 ; 302 ), ii) a front surface ( 4 ; 104 ; 204 ; 304 ), which front surface faces towards a surface to be cleaned, and iii) a transition ( 5 ; 105 ; 205 ; 305 ) between the peripheral surface ( 2 ; 102 ; 202 ; 302 ) and the front surface ( 4 ; 104 ; 204 ; 304 ), when viewed in cross-section, the transition being rounded, each gathering unit ( 3 ; 103 ; 203 ; 303 ) provided with a surface treatment element in the form of a scraper unit ( 12 ; 112 ; 212 ; 312 ) which is open to the front surface facing towards the surface to be cleaned, and constitutes a surface treatment unit, the scraper unit ( 12 ) comprising a bottom element ( 14 ) connecting two opposite walls ( 13 ), the bottom element and two walls forming a U-shaped channel with opening at either end of the channel defined between the two walls and adjacent the bottom element, the front surface connecting to the two with free edges of the two walls protruding downwardly beyond the front surface an open side of the scraper unit ( 12 ; 112 ; 212 ; 312 ) is oriented along the front surface ( 4 ; 104 ; 204 ; 304 ) of the gathering unit ( 3 ; 103 ; 203 ; 303 ), each gathering unit, and being free of any brushes.