Abstract: A filter for a self-propelled robotic pool cleaner includes a first chamber, a second chamber and a partition wall separating the first and second chambers to define first and second filter enclosures. A non-return device is placed in correspondence with the partition wall. The filter and non-return device are configured to receive a first flow of water and debris from the swimming pool into the first chamber so the debris is retained in the first chamber and filtered water is discharged into the swimming pool during a first cleaner operation mode, and receive a second flow of water from the swimming pool to displace the debris in the first chamber to the second chamber during a second cleaner operation mode. The non-return device is arranged such that the displaced debris cannot return from the second enclosure to the first enclosure when the cleaner is operating in the first operation mode.

Abstract: A filter for a self-propelled robotic pool cleaner includes a first chamber, a second chamber and a partition wall separating the first and second chambers to define first and second filter enclosures. A non-return device is placed in correspondence with the partition wall. The filter and non-return device are configured to receive a first flow of water and debris from the swimming pool into the first chamber so the debris is retained in the first chamber and filtered water is discharged into the swimming pool during a first cleaner operation mode, and receive a second flow of water from the swimming pool to displace the debris in the first chamber to the second chamber during a second cleaner operation mode. The non-return device is arranged such that the displaced debris cannot return from the second enclosure to the first enclosure when the cleaner is operating in the first operation mode.

Abstract: A swimming pool cleaner comprising a housing (1, 2), drive means (4, 41), a water inlet (11), a water outlet (12), a filter (20) and a pump (3), arranged so that, in a first operation mode of the swimming pool cleaner, the pump (3) displaces water from said inlet (11) to said outlet (12) through said filter (20), so that debris entering with the water is retained in a first part of said filter (20). The swimming pool cleaner is configured so that in a second operation mode, debris is displaced from said first part to a second part of the filter. Thus, a backwash effect is provided that prevents clogging.

Abstract: A swimming pool cleaner comprising a housing (1, 2), drive means (4, 41), a water inlet (11), a water outlet (12), a filter (20) and a pump (3), arranged so that, in a first operation mode of the swimming pool cleaner, the pump (3) displaces water from said inlet (11) to said outlet (12) through said filter (20), so that debris entering with the water is retained in a first part of said filter (20). The swimming pool cleaner is configured so that in a second operation mode, debris is displaced from said first part to a second part of the filter. Thus, a backwash effect is provided that prevents clogging.

Abstract: A pool cleaner device is configured to travel along an enclosing surface of a pool. The device includes at least one elongated brush having a long axis that is oriented at a nonzero angle to a lateral axis of the device and substantially parallel to the surface when the pool cleaner is traveling along the surface. The device also includes a mechanism for causing bristles of the elongated brush to vibrate against the surface when the device is operating on that surface.