Patent ID: 8394266

Claim:
A rolling device for cleaning an immersed surface comprising: a hollow body, rolling members having contact zones with the immersed surface, defining a rolling plane of the hollow body over the immersed surface, at least one motor for driving at least one rolling member, called the drive rolling member, in order to form a driving device which is capable, via this/these drive rolling member(s), of moving the hollow body over the immersed surface in at least one direction of advance and in a main direction of advance, called the longitudinal direction, a filtration chamber in the hollow body, comprising: at least one liquid inlet into the hollow body, located at the base of said hollow body, at least one liquid outlet out of the hollow body, located remotely from the base of said hollow body, at least one hydraulic circuit for flow of liquid between at least one liquid inlet and at least one liquid outlet through at least one filtering device, at least one motorized pumping device which is at least partially interposed in a hydraulic circuit and which is capable of producing a flow of liquid between each liquid inlet and each liquid outlet which are connected by that hydraulic circuit, at least one liquid outlet which is called the rear outlet being orientated towards the rear in such a manner that the liquid flow which is discharged via that rear outlet produces, by means of reaction, forces whose resultant, called the hydraulic reaction force, has a longitudinal component for driving the device forwards which is not equal to zero, wherein it comprises: a device for detecting at least one signal, which is called an instruction signal and said instruction signal being a predetermined state of the device, a control unit which is capable of controlling modulation of the liquid flow which is discharged from at least one rear liquid outlet, said modulation having the effect of modulating said hydraulic reaction force and said longitudinal drive component brought about by the flow of liquid which is discharged from said at least one rear outlet, in accordance with the value of at least one instruction signal detected by said detection device.