Abstract: Detailed is a device for cleaning an immersed surface including a body; members for driving the body; a filtration chamber which has: a liquid inlet and a liquid outlet; a filtering device which is removably mounted in the filtration chamber; a hydraulic circuit for the flow of liquid between the inlet and the outlet through the filtering device; an axial pumping propeller which is interposed in the hydraulic circuit; a flap for access to the filtering device, wherein the pumping propeller is orientated in order to generate a liquid flow with a horizontal component towards the rear, the outlet being opposite the propeller; the pumping motor is arranged below the hydraulic circuit; the access flap is arranged at the top and/or towards the front of the hydraulic circuit in order to allow the filtering device to be disassembled via the top and/or towards the front.

Abstract: Detailed is a device for cleaning an immersed surface including a body and members for driving the body over the immersed surface, a filtration chamber which is provided in the body and which has: a liquid inlet located at the base of the body; a liquid outlet arranged opposite the base of the body; a hydraulic circuit for flow of liquid between this liquid inlet and this liquid outlet through a filtering device; a liquid pumping device including a pumping motor which has a rotating drive shaft which is coupled to a pumping propeller which is interposed in the hydraulic circuit, wherein the liquid outlet is longitudinally offset from the liquid inlet and the pumping propeller has an inclined rotation axis which forms, with the longitudinal direction, an angle which is not equal to zero and which is different from 90°.

Abstract: Detailed is an apparatus for cleaning a surface which is immersed in a liquid including a 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 the first trajectory.

Abstract: The invention relates to a rolling cleaner apparatus for a submerged surface, comprising rolling drive members, at least one motor (20a, 20b) for driving at least one rolling drive member, a filtration chamber formed in the hollow body and having a liquid inlet into the hollow body, a liquid outlet from the hollow body, a hydraulic circuit for circulating liquid between the liquid inlet and the liquid outlet through a filtering device, a motorized pumping device (12) designed to generate a flow of liquid between each liquid inlet and each liquid outlet, characterized in that it comprises a control unit (90) designed to modulate the flow of liquid circulating between each liquid inlet and each liquid outlet.

Abstract: Detailed is a device for cleaning an immersed surface including a body, members for driving this body over the immersed surface in a longitudinal direction, including a wheel, a device for brushing the immersed surface, a mechanism for rotating the brushing device about a brushing axis, wherein the driving mechanism of the brushing device includes: an internally toothed ring which is fixedly joined to a wheel, a brush pinion which is fixedly joined to the brushing device and which is engaged in the ring of this drive wheel in such a manner that a rotation of this drive wheel brings about a rotation of the brushing device about the brushing axis thereof in the same rotation direction.

Abstract: Detailed is a device for cleaning an immersed surface including a body and members for driving this body over the immersed surface, a filtration chamber which has a liquid inlet and a liquid outlet, a hydraulic circuit for the flow of liquid between the inlet and the outlet through a filtering device, a handle for operating the body which allows a user to carry it in order to immerse it in the liquid or remove it from the liquid, wherein the liquid outlet is arranged at a longitudinal end of the body, and wherein the operating handle is connected to the body at an opposing end so that, when the body is suspended by the operating handle, it tilts spontaneously under the effect of gravity into an emptying position in which the liquid outlet is located below the liquid inlet.

Abstract: Detailed is a device for cleaning an immersed surface including a body and members for driving the body over the immersed surface; a filtration chamber which is provided in the body and which has: a liquid inlet; a liquid outlet; a hydraulic circuit for flow of liquid between the inlet and the outlet through a filtering device, wherein the filtering device includes a first filtering shell which extends towards the rear of the body, from a front opening; a second shell which is fitted to the first shell at the front thereof, these shells being able to be fitted together so as to form an integral filtering casing; in which case the second shell closes the front opening of the first shell, with the exception of a liquid inlet passage; the two shells being able to be separated from each other by disengaging the front opening of the first shell which acts as an opening for emptying this shell.

Abstract: Treatment devices for fluid such as water are described. Principally (although not necessarily exclusively) designed for use as chlorinators, the devices may divert water flowing in conduits into the devices for treatment and subsequent return to the flow stream. A return tube of the device may be designed to create vortex action, using a pressure differential to evacuate treated water from the device back into the conduit.

Abstract: Treatment devices for fluid such as water are described. Principally (although not necessarily exclusively) designed for use as chlorinators, the devices may divert water flowing in conduits into the devices for treatment and subsequent return to the flow stream. A return tube of the device may be designed to create vortex action, using a pressure differential to evacuate treated water from the device back into the conduit.

Abstract: Devices for cleaning vessels, especially swimming pools, are discussed. The devices may include repositionable in-line valves, with the valves typically moving laterally (from side to side) and changing the initial direction of the main fluid-flow path through the valves and corresponding cleaner bodies. Asymmetric feet may be utilized as part of the devices, whose bottom bearing surfaces may include elongated strips of material placed parallel to the normally-forward direction of travel of the devices. Discs of non-uniform flexibility also may be employed, and blocking tabs or gripping material may be used to inhibit undesired backward movement of a cleaner when its operation commences.

Abstract: Separate covers for protruding portions of discs of automatic swimming pool cleaners are addressed. The covers may be placed onto protrusions, such as fins, and removed from the fins as needed. Version of the covers are made of material more rigid and having lower coefficient of friction than the fins to discourage lateral bending of the fins and decrease frictional contact of the fins with pool surfaces.

Abstract: Devices for cleaning vessels, especially swimming pools, are discussed. The devices may include repositionable in-line valves, with the valves typically moving laterally (from side to side) and changing the initial direction of the main fluid-flow path through the valves and corresponding cleaner bodies. Asymmetric feet may be utilized as part of the devices, whose bottom bearing surfaces may include elongated strips of material placed parallel to the normally-forward direction of travel of the devices. Discs of non-uniform flexibility also may be employed, and blocking tabs or gripping material may be used to inhibit undesired backward movement of a cleaner when its operation commences.