A system for extraction of a pool cleaning robot from a pool, the system may include a base for receiving the pool cleaning robot; and at least one out of (a) an interface device and (b) a pool cleaner electrical power cable winding drum; wherein the interfacing device comprises an interfacing device portion that extends beyond and below the base during a part of the extraction of the pool cleaning robot from the pool; and wherein the pool cleaner electrical power cable winding drum is configured to wind and unwind a power cable of the pool cleaning robot during the part of the extraction of the pool cleaning robot from the pool.

A pool cleaning robot that may include a filtering unit for filtering fluid that passes through the filtering unit; a calorimetric sensor for sensing a cleanliness related parameter of the filtering unit while the pool cleaning robot is submerged in the fluid; and a controller that is configured to at least assist in determining, based on the cleanliness related parameter of the filtering unit, a cleanliness of the filtering unit.

A pool cleaning robot that may include a filtering unit for filtering fluid that passes through the filtering unit; a calorimetric sensor for sensing a cleanliness related parameter of the filtering unit while the pool cleaning robot is submerged in the fluid; and a controller that is configured to at least assist in determining, based on the cleanliness related parameter of the filtering unit, a cleanliness of the filtering unit.

A pool cleaning robot for cleaning a pool, comprising: a housing; and a drive system that is arranged to move the pool cleaning robot in relation to an environment of the pool cleaning robot; wherein the environment comprises the pool and an exterior surface; wherein the drive system comprises: a drive motor system; a group of interfacing modules; a transmission system that is arranged to couple the drive motor system to the group of interfacing modules; and an interface manipulator; wherein interfacing modules of the group are arranged to interface between the pool cleaning robot and the environment; wherein the interface manipulator is arranged to change a spatial relationship between (a) the housing and (b) a selected interfacing module of the group, during an exit process during which the pool cleaning robot exits the pool.

A pool cleaning robot for cleaning a pool, comprising: a housing; and a drive system that is arranged to move the pool cleaning robot in relation to an environment of the pool cleaning robot; wherein the environment comprises the pool and an exterior surface; wherein the drive system comprises: a drive motor system; a group of interfacing modules; a transmission system that is arranged to couple the drive motor system to the group of interfacing modules; and an interface manipulator; wherein interfacing modules of the group are arranged to interface between the pool cleaning robot and the environment; wherein the interface manipulator is arranged to change a spatial relationship between (a) the housing and (b) a selected interfacing module of the group, during an exit process during which the pool cleaning robot exits the pool.

A multi-terrain wall climbing vehicle including a generally rectangular housing having a top opening and a bottom opening. A power source is placed within the housing. A first motor and a second motor are located within the housing and are connected to the power source. At least four pairs of wheels are connected to the housing, at least two of the wheel pairs being connected to and powered by the first motor. Two tracks are placed onto the wheels so as to surround the housing to enable the vehicle to ride along a riding surface. A propeller is placed within the housing between the top opening and the bottom opening. The propeller is connected to the second motor. As the propeller rotates, it draws in air from at least one of the top opening and the bottom opening and exhausts the air through the top opening so as to generate an adhesion force enabling a secure connection between the tracks of the vehicle and the riding surface.

A robot comprises a body, at least one traveling device, a suction cup and a pump module. The at least one traveling device disposed in the body is for causing the robot to move on a surface of a plate. The suction cup and the pump module are disposed in the body. The suction cup can move relative to the body. Upon an operation of the robot, the body, the suction cup and the plate form a closed space, and the closed space is kept at a negative pressure by use of the pump module.

A robot comprises a body, at least one traveling device, a suction cup and a pump module. The at least one traveling device disposed in the body is for causing the robot to move on a surface of a plate. The suction cup and the pump module are disposed in the body. The suction cup can move relative to the body. Upon an operation of the robot, the body, the suction cup and the plate form a closed space, and the closed space is kept at a negative pressure by use of the pump module.

An apparatus for releasing a magnetic crawler from a ferromagnetic operating surface has a ramp fabricated from lightweight non-magnetic materials. The ramp includes a base portion, inclined upper portion for receiving a magnetic crawler, a front end and a rear end. Ferromagnetic members are positioned on the top surface of the upper portion and configured to be magnetically attached to the tracks or wheels of a magnetic crawler. Magnets are positioned on the bottom portion and configured to be magnetically attached to a ferromagnetic operating surface upon which the magnetic crawler operates. In some embodiments, the lightweight non-magnetic materials are highly buoyant.

An apparatus for releasing a magnetic crawler from a ferromagnetic operating surface has a ramp fabricated from lightweight non-magnetic materials. The ramp includes a base portion, inclined upper portion for receiving a magnetic crawler, a front end and a rear end. Ferromagnetic members are positioned on the top surface of the upper portion and configured to be magnetically attached to the tracks or wheels of a magnetic crawler. Magnets are positioned on the bottom portion and configured to be magnetically attached to a ferromagnetic operating surface upon which the magnetic crawler operates. In some embodiments, the lightweight non-magnetic materials are highly buoyant.