Abstract: The invention relates to an apparatus for cleaning a surface which is immersed in a liquid, comprising a hollow body, guiding members defining at least one axle, a filtration chamber, at least one electric motor, a pumping device which creates, in a normal cleaning direction through a filtering device, a liquid flux which is discharged via at least one main outlet, and at least one secondary liquid outlet arranged so as to orientate a current of liquid which is discharged in a backward direction via this secondary outlet so that this current creates a secondary hydraulic reaction force which generates a nosing-up torque of the apparatus by the hollow body being pivoted about the axle.

Abstract: The invention relates to an apparatus for cleaning a surface which is immersed in a liquid, comprising a hollow body, members which are integral with the hollow body and which come into contact with the immersed surface, a filtration chamber, at least one electric motor which is carried by the hollow body, and a control unit which is configured to control the motor. For at least one movement configuration of the apparatus, at least one non-steering non-driving rolling member in contact with the immersed surface is arranged relative to the instantaneous drive orientation so as to apply a gyration torque of the apparatus only due to such an arrangement.

Abstract: The invention relates to an apparatus for cleaning a surface which is immersed in a liquid comprising a hollow body, guiding members defining at least one axle, a filtration chamber, at least one electric drive motor, a control unit which is configured to control each drive motor in at least one direction at a speed selected from: at least a first speed at which the apparatus is in a first movement position in accordance with a first predetermined trajectory, at least a second more rapid speed at which the apparatus is in a second nosed-up movement position in accordance with a second predetermined trajectory which is different from said first trajectory.

Abstract: The invention relates to an apparatus for cleaning a surface which is immersed in a liquid, comprising a hollow body, guiding and driving members, a filtration chamber in the hollow body, at least one liquid inlet, at least one liquid outlet out of the hollow body, at least one axial pumping propeller, a single reversible electric motor whose drive shaft, in order to move it, is simultaneously mechanically connected to at least one motorized member and to each pumping propeller. In a first rotation direction of the drive shaft, each motorized member is driven in a forward direction, and each pumping propeller generates the flow of liquid in the normal direction ensuring the cleaning of the immersed surface. In a second rotation direction of the drive shaft, each motorized member is driven in a backward direction opposite the first direction.

Abstract: The invention relates to a support device suitable for being installed in an arrangement referred to as “mounted” against the rear of a back of a seat comprising a headrest. The headrest is held at the top of the back by at least one upright. The support device includes a framework suitable for being positioned and supported on the top of the back, a clamp movable in relation to the framework, and at least one reversible fastener making it possible to fasten the clamp to the framework so as to immobilize the framework in relation to the upright.

Abstract: The invention relates to a support device suitable for being installed in an arrangement referred to as “mounted” against the rear of a back (90) of a seat (9) comprising a headrest (91), the said headrest (91) being held at the top of the said back (90) by at least one upright, the said support device comprising a framework (10, 31) suitable for being positioned supported on the top of the said back (90) a clamp (11) movable in relation to the said framework (10, 31) at least one reversible fastening means (12) making it possible to fasten the said clamp (11) to the said framework (10, 31) so as to immobilize the said framework (10, 31) in relation to the said upright.