Abstract: Some embodiments of the present invention provide a robotic pool cleaner. The robotic pool cleaner includes a shell and a water pressure sensing mechanism. The water pressure sensing mechanism is disposed in a non-negative pressure area of the shell. The water pressure sensing mechanism includes a sensor. The sensor is disposed inside the shell. The sensor is configured to sense a water pressure at a position where the sensor is disposed.

Abstract: A cleaning device and methods for cleaning are provided. In one embodiment, the cleaning device includes a head assembly, a body assembly, and a handle assembly. The cleaning device also includes components that enable the cleaning device to operate in dry cleaning modes and wet cleaning modes. Dry cleaning modes can employ a vacuum assembly, including a motor, tubing, and a fluid recovery tank in order to draw in debris and waste into a fluid recovery tank. Wet cleaning modes can further employ a fluid supply tank, a pump, and tubing in order to supply fluid to a brushroll to aid in a cleaning process.

Abstract: A pool cleaner includes a vent mechanism and a water port in fluid communication with the vent mechanism. When a forward end of the pool cleaner extends above a waterline of the pool, water flows through the vent mechanism and the water port over an inlet port and prevents loss of suction at the inlet port. A protruding member of the pool cleaner contacts submerged obstacle and tilts the pool cleaner to prevent the pool cleaner from becoming stuck on the submerged obstacle.

Abstract: Systems and methods for mitigating cable twists for underwater cleaners are provided. Cable twist mitigation logic is stored in a memory associated with a pool or spa cleaner, and controls operation of the cleaner to mitigate cable twists. A sequence of cleaner orientations is retrieved from memory and compare to one or more pre-defined sequences known to contribute to cable twist. If the sequence of cleaner orientations matches the one or more pre-defined sequences, a twist angle accumulator is incremented by a pre-defined twist angle corresponding to the one or more pre-defined sequences. The system determines whether the cleaner is turning on a surface of a pool or spa, and if so, controls turning of the cleaner using an accumulated angle stored in the twist angle accumulator to mitigate cable twists. A user-definable bias value could also be applied by the system to further mitigate cable twists.

Abstract: System for treating inner walls of aquatic basins, including at least one working head, a mobility assembly for moving the working head along a wall to be treated, the working head having a working disc arranged in a rotational manner and connected to a rotary shaft which can be driven by a disc motor, the working disc bearing a wall contact foam having a plurality of radial slots connecting the center of rotation of the disc to the periphery of the disc.

Abstract: The present disclosure provides a moving device used in liquid. The moving device includes a mode switching member configured to achieve a position switching of the moving device above a liquid surface and below the liquid surface. When the moving device is below the liquid surface, the moving device is fully submerged below the liquid surface, and when the moving device is above the liquid surface, at least a portion of the moving device is above the liquid surface.

Abstract: The present disclosure provides a method of automatic docking a pool cleaning robot, a pool cleaning robot, an electronic device and a computer storage medium. In the method, a pool cleaning robot is placed into a pool; when a docking instruction is received, a closest pool wall relative to the pool cleaning robot is determined; and the pool cleaning robot is enabled to move towards the closest pool wall.

Abstract: A robotic pool cleaner includes a cleaning body, a drive and a cleaning roller brush mechanism. The robotic pool cleaner filters liquid and/or contaminants in a pool through the cleaning body. The drive mechanism is connected to the cleaning body, which is driven to move in the pool in a working process of the robotic pool cleaner. The drive mechanism includes a drive wheel with a first outer ring gear. The cleaning roller brush mechanism is coupled with the first outer ring gear through a transmission belt, so that the cleaning roller brush mechanism is driven by the first outer ring gear to rotate relative to the cleaning body when the drive motor drives the first outer ring gear to rotate. The robotic pool cleaner improves cleaning efficiency and reduces wear of a cleaning roller brush, thereby prolonging the service life of the cleaning roller brush mechanism.

Abstract: Brushes for robotic or other automatic swimming pool cleaners may include circumferentially-spaced blades extending radially from cylindrical cores. The blades beneficially are not longitudinally continuous, however. Instead, some or all of the blades are discontinuous along the lengths of the cores, creating fluid-flow paths tending to reduce the pump blade effect when the cleaners are operating.

Abstract: A pool cleaner equipped with a joint and a water inlet hose is disclosed. In a rotatable or use configuration, the water inlet hose is freely rotatable relative to a housing to avoid entanglement. In a locked or non-use configuration, either the joint or the water inlet hose is fixed relative to the housing to facilitate installation and/or removal of the water inlet hose via rotation between the joint and the water inlet hose.

Abstract: A pool cleaner equipped with a rotating brush assembly is disclosed. The brush assembly is removably coupled to the pool cleaner using clamps that are readily accessible, supported by the pool cleaner, and operable by hand. The clamps may be manipulated between a ready configuration, a loaded configuration to receive a brush assembly, and a locked configuration to secure the brush assembly.

Abstract: A mechanism for detecting obstacles and mechanically reversing (a direction of) a pool cleaner includes a drive part in non-rotatable connection with a cleaner housing, an arresting assembly connected to the cleaner housing, and a rotary direction-changing assembly rotatably connected to the cleaner housing or the drive part. The arresting assembly cooperates with the rotary direction-changing assembly. The mechanism for detecting obstacles and mechanically reversing (a direction of) a pool cleaner is compact in structure, low in manufacturing cost, and can perform obstacle detection and change a direction of the pool cleaner. With the structure of the rotary direction-changing assembly capable of rotating relative to the cleaner housing, the cleaner, when meeting an obstacle, is allowed to change the traveling direction, thereby resulting in a high working efficiency.

Abstract: The present application provides a floating device and a robotic pool cleaner, which relate to the technical field of swimming pool cleaning. the floating device has a wireless communication function, so that instructions can be transmitted to the wireless transmission module remotely through a remote controller, thereby controlling the walking and working status of the cleaning device of the robotic pool cleaner, which can realize intelligent cleaning path planning, and can also know the working position and working status of the robotic pool cleaner in time, which greatly improves the convenience of use and cleaning efficiency.

Abstract: The present application discloses an automatic water surface skimmer, belonging to the technical field of water surface cleaning. For the existing anti-collision structure, most of impact force is transmitted to a hull through an anti-collision wheel, resulting in that the anti-collision wheel and the hull are damaged, the anti-collision effect is poor, and the service life of the anti-collision wheel and the hull is influenced. Further, garbage collected by adopting the existing solution is easily scatteredly fallen from an opening, and the collection effect is not good. The body of the automatic water surface skimmer is provided with an accommodating cavity running through upper and lower portions, such that a storage member can be placed from the top to the bottom, and it is convenient for a user to disassemble and assemble the storage member.

Abstract: A pool cleaner includes a vent mechanism and a water port in fluid communication with the vent mechanism. When a forward end of the pool cleaner extends above a waterline of the pool, water flows through the vent mechanism and the water port over an inlet port and prevents loss of suction at the inlet port. A protruding member of the pool cleaner contacts submerged obstacle and tilts the pool cleaner to prevent the pool cleaner from becoming stuck on the submerged obstacle.

Abstract: A pool cleaning vehicle having a suction mouth placed at the belly of a housing. The pool cleaner is placed on two elongate rollers which allow the pool cleaner to move in opposite directions. The suction mouth is positioned between the two elongate rollers to reduce angular displacement when a roller wheel mounts a protrusion on uneven pool bed. A scrubber extends from within the mouth to sweep across the pool bed. The scrubber is pivoted to be able to swing when the pool cleaner changes direction.

Abstract: A self-propelled robotic pool cleaner includes a housing with a lower portion having an inlet and an upper portion having an outlet, the lower and upper portions define an internal chamber therebetween. A filter and a water pump are mounted in the internal chamber for suctioning pool water into the inlet and discharging filtered water through said outlet. Rotationally-mounted elements are mounted to the housing for supporting and guiding said cleaner on a surface of the pool. An arm assembly extends outward from said housing, and a rotary brush assembly is mounted at a distal end of the arm assembly. An electric motor is coupled to at least one of said water pump, the rotationally-mounted elements and the rotary brush. The pool cleaner is configured to continue climbing upward on a pool wall and tell the rotary brush assembly is above the water level and climbs over the pool coping edge propelling said pool cleaner onto the pool deck.

Abstract: A device including a reservoir filled with fluid, a frame, and a resilient rolling seal to prevent the fluid from reservoir from escaping, even while the device is moved along a surface. The purpose of this device is to deploy a sensor which is housed within the reservoir. The device is thus capable of maintaining a reservoir of fluid around a sensor or probe and allow the sensor or probe to remain immersed in the fluid, while also remaining in contact with the surface in which the device is moved along. The sensor preferably resides in a fluid couplant of the device. Because the fluid and the sensor reside in the reservoir and because that reservoir is effectively sealed, there is very little loss of fluid, and the amount of fluid needed to conduct testing is dramatically decreased.

Abstract: Systems and methods of detecting when an automatic swimming pool cleaner (APC) has contacted a main drain cover or other object protruding from a surface of a swimming pool are described. An APC may include equipment for detecting a change in its pitch or yaw (or both its pitch and yaw). Changes in pitch and yaw may be determined as a function of time, identifying encounters of the APC with certain protruding objects.

Abstract: A method for charging a pool cleaning robot, the method may include positioning a first wireless charging element of a pool cleaning robot within a charging range of a second wireless charging element of a floating unit; wherein the floating unit is electrically and mechanically coupled to an external power source, wherein the positioning comprises moving at least one of the pool cleaning robot and the floating unit; and wirelessly charging, by the second wireless charging element, the first wireless charging element, wherein the charging occurs while maintaining the first wireless charging element within the charging range of the floating unit, despite movements of the floating unit.

Abstract: Autonomous, mobile cleaners for water-containing vessels such as swimming pools and spas are detailed. The cleaners are especially useful for cleaning spas, although they may function adequately in connection with certain other vessels as well. They may be designed and constructed in particular to avoid high centering so as not to become stuck when encountering obstacles within the spas or other vessels.

Abstract: Swimming pool cleaning apparatus may include a cleaning unit intended to be immersed in a swimming pool and at least one liquid filter circuit between at least one liquid inlet and at least one liquid outlet via a filter chamber removable from the body of the cleaning unit. The filter chamber may include a cover and a filter basket. The cover may include components for fastening the filter basket and locking the filter chamber to the body of the cleaning unit. The locking component may be releasable and, when released, may cause an extraction handle to be deployed from the filter chamber and urged toward a predetermined position.

Abstract: A pool cleaning vehicle having a suction mouth placed at the belly of a housing. The pool cleaner is placed on two elongate rollers which allow the pool cleaner to move in opposite directions. The suction mouth is positioned between the two elongate rollers to reduce angular displacement when a roller wheel mounts a protrusion on uneven pool bed. A scrubber extends from within the mouth to sweep across the pool bed. The scrubber is pivoted to be able to swing when the pool cleaner changes direction.

Abstract: This application provides an intelligent robot for cleaning and mending a net cage and a method of using the intelligent robot, including: a control system, a main body, an attraction module, a motion module, a cleaning module and a mending module. The main body includes a streamlined pressure casing, and a drive mechanism and a water ballast tank which are located in the pressure casing. The attraction module includes electromagnets which are symmetrically provided at a bottom of the pressure casing. The motion module includes first and second motion mechanisms which are symmetrically provided at opposite sides of the pressure casing. A traveling path of the first motion mechanisms is perpendicular to a traveling path of the second motion mechanisms. The intelligent robot achieves cleaning and mending for both sides of the net cage, and is simple to operate, safe, high-efficient, economical and convenient.

Abstract: A swimming pool cleaner may include motive elements intentionally driven in an unbalanced manner. This unbalanced driving may allow a cleaner to maintain contact with (“hug”) walls of a pool, allowing the cleaner to, e.g., obtain information allowing mapping of the pool perimeter.

Abstract: Autonomous, mobile cleaners for water-containing vessels such as swimming pools and spas are detailed. The cleaners are especially useful for cleaning spas, although they may function adequately in connection with certain other vessels as well. They may be designed and constructed in particular to avoid high centering so as not to become stuck when encountering obstacles within the spas or other vessels.

Abstract: A swimming pool cleaner is driven along a submerged surface by water and debris flowing past a turbine positioned between an inlet and outlet of the cleaner. Retractable elements carried proximate the inlet form a plenum for water to enhance adherence of the pool cleaner to the submerged pool surface being cleaner. A drive train independently drives each of two wheels for maneuvering the pool cleaner in forward and reverse directions along the submerged surface. A hose connector operable with an outlet port is angled toward the forward direction of movement of the pool cleaner such that a suction hose will be placed slightly ahead of the pool cleaner when climbing a side wall surface to provide a weight for keeping the cleaner below the water surface and thus prevent an undesirable sucking of air at the inlet.

Abstract: An electrically powered pool cleaner may include a housing defining an axial passageway. A rotatable sleeve impeller may be supported by the housing within the axial passageway. The axial passageway may include an unobstructed central portion for passage of fluid and pool debris therethrough into a filter bag removably connected to the housing. A motor may be operatively connected to the sleeve impeller and a power supply operatively connected to the motor. Rotation of the sleeve impeller may accelerate fluid flow through the axial passageway for drawing into the filter bag. The pool cleaner may include a rigid cover enclosing the filter components. The rigid cover may include a handle for handheld operation of the pool cleaner.

Abstract: The disclosed technology includes pre-filter system that can include a filter portion comprising pipes, elbows, and tees. The pipes can include apertures. The pipes, elbows, and tees can be positioned such that a first end of a first group of neighboring pipes can be fluidly connected to form a column of fluid connection and a second end of a second group of neighboring pipes can be fluidly connected to form a row of fluid connection. The apertures of at least some of the pipes can be covered with a mesh netting. The pre-filter system can include an airtight float portion. The float portion can be attached to the filter portion to provide a predetermined amount of buoyancy to the pre-filter system.

Abstract: A brush for cleaning a pool includes an at least partially hollow body for receiving a hose, wherein the hose includes a plurality of rings being rotatably disposed around the hose. The brush also includes a plurality of bristles that project from the at least partially hollow body and a means for coupling the brush to at least one of the plurality of rings which facilitates rotation around the hose along with the at least one of the plurality of rings to which it is coupled.

Abstract: A robotic pool cleaner including: a housing; a propulsion mechanism configured to propel the robotic pool cleaner along an interior surface of a pool and a suction mechanism to draw liquid from the pool into the housing. A cable extends outward from the housing and a pull sensor is configured to generate a signal indicative of at least a direction in which the cable is pulled. A controller is configured to receive the signal and to operate the propulsion mechanism to propel the robot in accordance with the received signal.

Abstract: A pool cleaning robot that includes a ballast tank for controlling a buoyancy of the submarine pool cleaner; at least one cleaning element for cleaning debris from an underwater surface of a pool while the pool cleaning robot hovers over the underwater surface; a propulsion module that is configured to propel the submersible pool cleaner; and a steering module that comprises a rudder and diving planes.

Abstract: A hot tub vacuum attachment apparatus for cleaning debris from a hot tub utilizing the integrated pump system includes an attachment head to selectively engage a filter housing of a hot tub or pool. A tubular stem has a stem outlet end coupled to, and in fluid communication with, the attachment head. A filter mount is coupled to the tubular stem. The filter mount has an output end coupled to a stem inlet end of the tubular stem, an input end, and a filter receiver coupled between the output end and the input end. A filter system is coupled the filter receiver of the filter mount. All fluid flowing from the input end to the output end passes through the filter system to collect particles and debris. A flexible hose has a hose proximal end coupled to the input end of the filter mount and a hose distal end.

Abstract: The present disclosure relates to a cleaner improving the cleaning efficiency. The cleaner includes a main body, a suction device configured to suck foreign substances on a surface to be cleaned, and an extension member positioned in the rear of the suction device to connect the main body and the suction device, wherein the suction device includes a suction head including a suction port, a connection member connecting the suction head and the extension member, and a weight accommodated in the suction device and disposed between the suction port and the extension member such that the suction port is prevented from being lifted from the surface to be cleaned when the suction device moves along the surface to be cleaned.

Abstract: A swimming pool cleaner has a housing. The housing has an intake formed on a bottom section thereof. The intake runs along a width of the bottom section of the housing. A first rolling flap is proximate the intake. The first rolling flap is approximately equal in length to a length of the intake. The first rolling flap runs along the width of the bottom section and is hingly coupled to the bottom section of the housing along a front edge of the intake. The first rolling flap follows a contour of a surface of a swimming pool upon which the swimming pool cleaner is traveling upon to control a water flow into the intake.

Abstract: An autonomous pool cleaner includes a main body, a filter that is removably coupled to the main body, and an edge engagement assembly. The main body includes a top, a bottom, and one or more peripheral walls that extend between the top and the bottom. The filter is accessible for removal or installation via a particular peripheral wall of the one or more peripheral walls. The edge engagement assembly is configured to extend beyond the particular peripheral wall of the main body and removably secure the autonomous pool cleaner to an edge of a swimming pool so that the filter is accessible and vertically removable when the autonomous pool cleaner is secured to the edge.

Abstract: Leaves and other debris within water are collected into a porous basket by passing a hoop surrounding an opening of the basket through the water, typically while mounted to a tip of a pole. An interface (such as an elbow) and an attachment couple the hoop of the basket to the tip of the pole. The interface and attachment are pivotally attached together. The interface has a leading portion opposite of trailing portion, with the trailing portion coupled to the hoop and the leading portion forward of a hoop plane. The attachment pivotally attaches to the leading portion of the interface. The attachment and pole can pivot through a wide range of angles relative to the interface and the hoop, and facilitate collection of leaves both when the basket is being maneuvered away from a user and toward a user, and without requiring any rotation of the pole.

Abstract: An automatic pool cleaner comprising a housing and a base. The housing comprises a suction flow pathway, an impeller disposed within the housing and in fluid communication with the suction flow pathway such that water traveling through the suction flow pathway spins the impeller, wherein spinning of the impeller causes the pool cleaner to move forward, an off-center cam that extends through the impeller and is configured to rotate as the impeller rotates, and two spring biased valves. Each valve comprises a valve seat, and a spring biased poppet configured to seal against the valve seat, the poppet having a rod with a spring disposed around the rod. The base comprises two feet, each foot having a spring-biased pad extending from each end of the foot, two A-arm assemblies, one for each foot, and a suction port that extends through the base.

Abstract: An electrically powered pool cleaner may include a housing defining an axial passageway. A rotatable sleeve impeller may be supported by the housing within the axial passageway. The axial passageway may include an unobstructed central portion for passage of fluid and pool debris therethrough into a filter bag removably connected to the housing. A motor may be operatively connected to the sleeve impeller and a power supply operatively connected to the motor. Rotation of the sleeve impeller may accelerate fluid flow through the axial passageway for drawing into the filter bag. The pool cleaner may include a rigid cover enclosing the filter components. The rigid cover may include a handle for handheld operation of the pool cleaner.

Abstract: A pool cleaner includes a vent mechanism and a water port in fluid communication with the vent mechanism. When a forward end of the pool cleaner extends above a waterline of the pool, water flows through the vent mechanism and the water port over a plenum and prevents loss of suction at the cleaner's inlet port. A protruding member of the pool cleaner contacts submerged obstacle and tilts the pool cleaner to prevent the pool cleaner from becoming stuck on the submerged obstacle.

Abstract: A pool cleaner for cleaning a pool, the pool cleaner may include a filtering element for filtering fluid; at least one sensor for sensing an actual yaw of the pool cleaner and an actual orientation of the pool cleaner; at least one steering element that is configured to move the pool cleaner along a cleaning path during a cleaning process of a certain region of a sidewall of the pool; wherein the cleaning path comprises a cleaning path segment that has a cleaning path segment yaw that is a non-vertical yaw; wherein the cleaning path comprises less than a predetermined number of turns; wherein the predetermined number of turns is associated with another cleaning path that mostly includes vertical yaw cleaning path segments; and a controller that is configured to control the at least one steering element, based on the actual yaw of the pool cleaner.

Abstract: An apparatus for cleaning nets underwater formed from a propeller housing with a centrally disposed axis with a plurality of blades extending therefrom. An outer perimeter ring secured to an outer tip of each blade with a plurality of knuckles secured to the outer perimeter ring. Each knuckle including a curved surface constructed and arranged to be forcefully presented to the aquaculture net upon rotation of said blades for removal of growth by impact and shaking of the aquaculture net. An elastomeric hub prevents spike loads.

Abstract: Debris filters for automatic swimming pool cleaners may be formed of metal, carbon fibers, or composites more rigid than soft nylon bags. In at least one version, the filter may be made of, or include, steel or stainless steel. Non-uniform sizes, densities, and/or shapes of openings in the filtration material may be created to provide different levels of filtration in a single device.

Abstract: A pool cleaning robot that may include a housing, a propulsion mechanism configured to propel the pool cleaning robot along an interior surface of a pool; brushes to clean surfaces of the pool during a cleaning cycle, a filtering system, a suction mechanism to draw liquid from the pool through an inlet into the housing and to discharge it from an outlet; and a detachable sensor that is detachably coupled to the housing and comprises inductive electrical and data transfer connections.

Abstract: A robotic pool cleaner can operate while submerged to clean floor and side wall surface areas of the pool. A second embodiment of the pool cleaner can clean debris while skimming water along the top surface of the pool water. A third embodiment of the pool cleaner when inverted from submerged cleaning mode into skimmer mode, exposes on its bottom surface solar panels by which the pool cleaner's internal batteries can be recharged. A fourth embodiment of the pool cleaner includes different combinations of the submerged cleaning mode, the skimming mode and the battery charging mode.

Abstract: An electric-powered submersible vacuum cleaner for filtering water in a pool includes a base with an inlet port extending therethrough. A plurality of wheels extends from the lower surface of the base to facilitate movement of the cleaner over a surface of the pool. An impeller coaxially aligned with the inlet draws water and debris from the pool surface. An electric-powered drive train is coupled to the cleaner and configured to rotate the impeller. A discharge conduit in fluid communication with the inlet extends substantially normal with respect to the upper surface of the base and circumscribes the impeller to direct the flow of water/debris drawn through the inlet by the impeller. A filter mounted over the discharge conduit filters the debris from the drawn water and passes filtered water into the pool. A handle configured to facilitate manual movement of the cleaner over the pool surface.

Abstract: A submersible pool cleaning device includes a device body having a filter canister mounted within the device body. A plurality of filter cassettes is releasably mounted within the filter canister, each filter cassette having a filter container and a flotation device. A cartridge is mounted to the device body configured to release a gas into one of the flotation devices to inflate the flotation device. A controller is configured to activate the cartridge to release the gas into the flotation device in response to detecting that the filter container is full and to release the filter cassette from the filter canister upon inflation of the flotation device. A method for removing the floating debris bag includes capturing and removing the floating cassette by a drone. A cassette collection method includes activating a pool skimmer pump and detecting that the cassette has reached the pool skimmer.

Abstract: An in-water suction cleaner includes a portable housing for disposing at water of a pool or tank, a motorized unit supported in the portable housing for vacuuming a suction cavity of the portable housing to suck the water in the suction cavity out of the portable housing through a fluid outlet of the portable housing so as to create a suction at a fluid inlet of the portable housing, a manual scrubbing arrangement detachably coupled at the fluid inlet of the portable housing for scrubbing pool or tank surfaces and for sucking the water into the suction cavity at the same time, and a filtering element replaceably disposed in the suction cavity for filtering the water from the fluid inlet to the fluid outlet through the suction cavity so as to ensure the water after filtered being discharged back to the pool or tank via the fluid outlet.

Abstract: Apparatus and associated methods may relate to an artificial tree apparatus having a plurality of trunk segments that couple together to provide a plurality of information or command signals to load devices connected thereto. In an illustrative example, one or more branch segments having light emitting devices are connected to the trunk segments to independently receive the electrical power and command signals via a control system. In some implementations, each command signal generated by the control system may include data pertaining to light color and illumination pattern. In some embodiments, each branch segment and associated light emitting devices may be independently controlled via a multi-channel arrangement. In some implementations, each group of light emitting devices may be manually configured via one or more user-interfaces.

Abstract: A method for charging a pool cleaning robot, the method may include positioning a first wireless charging element of a pool cleaning robot within a charging range of a second wireless charging element of a floating unit; wherein the floating unit is electrically and mechanically coupled to an external power source, wherein the positioning comprises moving at least one of the pool cleaning robot and the floating unit; and wirelessly charging, by the second wireless charging element, the first wireless charging element, wherein the charging occurs while maintaining the first wireless charging element within the charging range of the floating unit, despite movements of the floating unit.