AUTONOMOUS SURFACE TREATING DEVICE Russian patent published in 2016 - IPC A47L11/40 

FIELD: machine building.

SUBSTANCE: autonomous surface treating appliance comprising a chassis having a drive arrangement and a control system interfaced to the drive arrangement so as enable control of the appliance across a surface to be treated, wherein the drive arrangement comprises at least one traction unit, each traction unit comprising surface - engaging track (98) constrained around leading wheel (94) and trailing wheel (96), wherein the leading wheel and trailing wheel are arranged so that a track portion opposing the floor surface and extending between the leading and trailing wheels defines a ramped climbing surface.

EFFECT: device control.

43 cl, 14 dwg