A kit that may include an interfacing device that includes pool sidewall interface, and a pool cleaning robot that includes a housing and a drive system. The drive system may include a drive motor system, a group of interfacing modules and a transmission system that is arranged to mechanically couple the drive motor system to the group of interfacing modules. At least one interfacing module of the group may include protuberances that are shaped to fit a non-smooth surface of the pool sidewall interface.

A track system for traction of a vehicle that is connectable to an axle of the vehicle and includes a track and a track-engaging assembly for driving and guiding the track around the track-engaging assembly. The track-engaging assembly includes a drive wheel for driving the track, idler wheels for contacting a bottom run of the track, and a bogie carrying the idler wheels. The track system includes a transmission for transmitting power from the axle of the vehicle to the drive wheel such that a rotational speed of the drive wheel is different from a rotational speed of the axle of the vehicle. The track system includes a connector disposed between the transmission and the bogie such that the bogie is movable (e.g., pivotable) relative to the transmission. The connector may be disposed below an output shaft of the transmission.

A vehicle, method, and track control system for sensing the temperature of a track and controlling the vehicle's speed based on the temperature of the track. The track temperature may be sensed by a sensor embedded in a portion of the track, such as in a drive lug, a tread bar, or portion of the carcass. The temperature of the track may also be used to alert an operator of a track temperature issue or request that the operator reduce the speed of the vehicle.

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.

Disclosed is an unmanned surface vehicle operable remotely by a vehicle operator using a transmitter. The unmanned surface vehicle includes a front section and a rear section, a first left track attached to the housing, a first right track attached to the housing, plurality of first left wheels configured within the first left track, plurality of first right wheels configured within the first right track, a first left motor and a first right motor configured in the housing to drive plurality of first left and first right wheels respectively along with the first left track and the first right track. Further, the unmanned surface vehicle includes a receiver configured in the housing to receive commands from the transmitter, an antenna configured in the housing to amplify the commands received from the transmitter, a first speed controller and a second speed controller to manipulate the speed of the first left motor and the first right motor, respectively on receiving the commands from the transmitter via the receiver. Further, the unmanned surface vehicle includes a power source to power the receiver, the first speed controller and the second speed controller.

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 track system for traction of a vehicle is controllable, including while the vehicle is in motion, notably to control how the track system is positioned and moves relative to at least part of a frame of the vehicle other than for steering the vehicle, based on one or more factors, including: an environment of the track, position and orientation of the track system relative to the frame of the vehicle, speed of the track system, speed of the vehicle, user's preferences and other suitable factors.

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 robotic mobile low-profile transport vehicle is disclosed. The vehicle can comprise a first transport module having a frame assembly, a mobility system, and a propulsion system and a second transport module having a frame assembly and a mobility system. A multi-degree of freedom coupling assemblage can join the first and second transport modules together. The vehicle can include a first platform supported about the frame assembly of the first transport module, and a second platform supported about the frame assembly of the second transport module. Each of the platforms can be configured to receive a load for transport. Additionally, the vehicle can include a control system that can operate to facilitate intra-module communication and coordination to provide a coordinated operating mode of the first and second transport modules and the coupling assemblage about a given terrain.

Disclosed is an arrangement for facilitating amphibious operation of a tracked vehicle comprising one or more vehicle bodies and at least one track assembly pair per vehicle body. Said track assembly pair is connected to the vehicle body, the track assembly pair comprising two track assemblies for driving the vehicle. Each track assembly comprises a driven endless track arranged to run over a set of wheels of the track assembly and, in connection to amphibious operation, being configured to operate under the water surface by rotating in the water providing a flow of water. The arrangement comprises gas provision device configured to, in connection to swimming operation, introduce a gaseous medium into the flow of water at the upper side of the track of the respective track assembly so as to reduce the amount of water in connection to said upper side.