Abstract: A submersible vacuum cleaner for cleaning an artificial basin such as a swimming pool, the vacuum cleaner including a main body, a suction turbine or impeller coupled to an electric motor, a battery, a suction mouth, a pre-filter ensuring a first filtering, and a discharge outlet. The vacuum cleaner including a connector, which can be attached on the discharge outlet to connect thereto a hose for evacuating the sucked water out of the basin, and a removable filtering element which can be attached on the discharge outlet to ensure a second filtering finer than the first filtering. The discharge outlet being designed so as to receive, one at a time, the hose or the filtering element.

Abstract: A submersible vacuum cleaner to clean artificial pools, such as swimming pools. A suction head connected to a suction duct leading into a filter bag. A motor coupled to an impeller located within the suction duct. The spinning of the impeller producing a suction. A battery powering the motor. The motor and the battery being placed in a watertight compartment, itself mostly placed within the filter bag, so as to obtain a compact design of the vacuum cleaner.

Abstract: A broom vacuum cleaner for cleaning swimming pools including a main body, pumping means, a suction head and an upstream filter, placed inside the main body and upstream of the pumping means, the suction brush includes a downstream filter placed outside the main body and downstream of the pumping means, and the upstream and downstream filters are coaxial.

Abstract: A suction head for submersible use in the water of an artificial pool. The suction head having a body provided with a suction duct and a suction pump placed inside the suction duct. The suction pump includes an electric motor coupled to a propeller. The rotation of the propeller producing suction along the suction duct between a suction mouth and an upper opening of the duct. The suction head further includes a central deflector placed between the motor and the propeller so as to prevent bulky debris from piling up below the propeller and discharging it to the periphery of the suction duct.

Abstract: A filtration system for a vacuum cleaner to clean swimming pools. The filtration system includes a filtration cartridge to filter fine debris and a watertight flexible bag to collect bulky debris. The filtration cartridge is attached inside the watertight flexible bag by at least one tubular sleeve. The sleeve passes through the flexible bag and gripping it against at least one end of the filtration cartridge in a watertight manner.

Abstract: A suction head for submersible use in the water of an artificial pool. The suction head having a body provided with a suction duct and a suction pump placed inside the suction duct. The suction pump includes an electric motor coupled to a propeller. The rotation of the propeller producing suction along the suction duct between a suction mouth and an upper opening of the duct. The suction head further includes a central deflector placed between the motor and the propeller so as to prevent bulky debris from piling up below the propeller and discharging it to the periphery of the suction duct.

Abstract: A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering the unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Abstract: A broom vacuum cleaner for cleaning swimming pools including a main body, pumping means, a suction head and an upstream filter, placed inside the main body and upstream of the pumping means, the suction brush includes a downstream filter placed outside the main body and downstream of the pumping means, and the upstream and downstream filters are coaxial.

Abstract: A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering the unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Abstract: A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering said unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Abstract: A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering said unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Abstract: The subject of the invention is a pool cleaning robot having a structure for suctioning debris from the bottom of the pool and a propulsion nozzle (5) adapted for directing a propulsive jet of water in a direction opposite to a direction (D1,D2) of movement of the robot, characterized in that the nozzle (5) is rotatably mounted on an axis (z,z?) perpendicular to a plane of movement of the robot, in that the robot has a structure (12,13) for stopping the rotation of the nozzle in at least two essentially opposite directions and structure for controlling (7,71,72) the structure for stopping, equipped so as to be operated by a hydrodynamic force crated by the movement of the robot.

Abstract: A pool cleaning robot for suctioning debris from the bottom of the pool includes a propulsion nozzle adapted for directing a propulsive jet of water in a direction opposite to a direction of movement of the robot. The nozzle is rotationally mounted on an axis (z, z?) perpendicular to a plane of movement of the robot. The robot can stop the rotation of the nozzle in at least two essentially opposite directions and can control the stopping, and is equipped so as to be operated by a hydrodynamic force created by the movement of the robot.

Abstract: A device for automatically cleaning the bottom and walls of a swimming-pool includes a suction/discharge body (11) having an orifice or suction opening (12) and a discharge orifice (13), an ejector comprising a driving nozzle (14) and a venturi diffuser (15) and a moveable device (17) for collecting debris. The ejector is disposed inside the body (11) and the nozzle (14) is able to be connected to a discharge opening (5) of the swimming-pool via a conduit with one portion being formed by an accordion wall flexible pipe (10). The device further comprises a propulsion device which creates between the discharge opening (5) and the nozzle (14) a transient and repeated escapement of the pressurized water of the conduit externally so as to create a movement of the device by repeated elastic expansion/constriction of the flexible pipe (10).

Abstract: A method and device are disclosed for controlling the movement of a machine on a surface. The device comprises an obstacle disposed along at least part of an area to be traversed by the machine, a winder-unwinder device connected to the machine, and an anchor which is located remote from the machine and which is stationary with respect to the surface. A flexible connection is attached at one end to the machine at another end to the anchor. An obstacle detector, carried by the machine, detects the presence of the obstacle. A device successively frees a given length of the connection when the obstacle is detected. A propulsive device causes the machine to travel in a direction in which the connection is stretched again after the length of the connection is freed, and then causes the machine to travel in a direction which is opposite to a direction in which the machine was travelling before the obstacle was detected.

Abstract: An apparatus for filtering debris from a body of liquid, particularly for automatic cleaning of the bottom of a swimming pool. The apparatus includes a housing having a liquid inlet, a liquid outlet, and a filter located between the inlet and outlet. The apparatus is configured such that liquid is expelled from the housing through the outlet in a direction along a line which does not intersect the axis of symmetry of the housing, which tends to provide a force for rotating the housing about its axis of symmetry. A device is further provided for counteracting the rotational force to propel the apparatus substantially rectilinearly. When an obstacle is encountered by the apparatus, such as a wall of the swimming pool, the device for counteracting the rotational force is no longer effective to maintain rectilinear movement. Consequently, the apparatus rotates and then moves rectilinearly away from the obstacle or wall.