| 摘要 |
FIELD: vacuum cleaning equipment. ^ SUBSTANCE: vacuum cleaner has main casing defined by fan engine, which creates drawing force, fan, cyclone dust catcher, suction head connected to main casing and adapted for sucking of any contaminant from surface under cleaning process, suction hose joined to front part of main casing, extension pipe connected to suction head, and dust catching chamber fixed on main casing for easy disconnection and equipped with handle. Wheels are attached at both sides of rear part of main casing to provide for reciprocal rolling of wheels. Suction hose and extension pipe are positioned between main casing and suction head. Lower retaining part of handle is arranged on outer rear surface of dust catching chamber fixed on rear side of main casing and extends beyond wheels to come into contact with surface of stair lower step, when front part of main casing of vacuum cleaner engages edge of stair upper step. Self-guiding roller is positioned at both sides of lower front part of main casing to provide for additional engagement of vacuum cleaner with edge of upper steps for preventing main casing of vacuum cleaner from sliding down the stair. Vacuum cleaner may be used for cleaning stair steps without necessity for manual lifting of main casing. ^ EFFECT: increased efficiency and simplified construction. ^ 13 cl, 6 dwg |
