SURFACE TREATMENT APPARATUS Russian patent published in 2008 - IPC A47L5/28 

FIELD: surface treatment technique, in particular, vacuum cleaner-type equipment.

SUBSTANCE: apparatus has main casing, surface treating head, and supporting structure. Supporting structure is joined to main casing for rolling so as to enable movement of main casing over surface to be treated. Supporting structure comprises substantially continuous supporting roller surface extending in direction perpendicular to longitudinal axis of main casing. Moreover, supporting surface is symmetrical with respect to said longitudinal axis. Supporting structure may comprise some part, for example electric engine, and may be furnished with fluid inlet pipe and fluid outlet pipe.

EFFECT: improved maneuverability and increased efficiency of apparatus.

23 cl, 31 dwg