DUAL PURPOSE VACUUM CLEANER FOR USE BOTH ON FLOORS AND ON STAIRS Russian patent published in 2015 - IPC A47L5/36 

FIELD: personal use articles.

SUBSTANCE: vacuum cleaner is designed with a unique shape that enables to place it in a stable position in the staircase flight, and that solves the problem of the stability loss when placed on the stairs, but is also suitable for use on a flat surface such as floor. The vacuum cleaner comprises one or more rotatable elements for coupling with the floor, which can be blocked in order to allow rotation only in the forward direction, which solves the problem in that the vacuum cleaners of the known state of the art are unstable when placed on the stairs, and it may comprise one or more rotating elements which can engage with the riser to enable the movement upwards with a very low resistance.

EFFECT: this shape enables to move easily the vacuum cleaner upstairs and solves the problem connected with manoeuvrability.

6 cl, 5 dwg