FIELD: vacuum cleaning devices. SUBSTANCE: suction nozzle has housing with reciprocating front and rear rollers and openings disposed along air flow path. Nozzle cover is fixed on housing top. Nozzle holder has connecting branch pipe extending through nozzle cover and adapted for passage of air flow. Branch pipe of nozzle holder is connected with suction branch pipe fixed on housing. Noise-suppressing material is attached to housing outer side and to portions adjacent to openings. EFFECT: increased efficiency in suppressing noise created by air friction and vortex during flowing of sucked air and enhanced reliability in operation. 2 cl, 3 dwg
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RU2181255C1 |
