Abstract: Provided herein is a wash arm assembly for a dishwasher, and a corresponding dishwasher including the same. The wash arm assembly may include a wash arm, comprising a tubular connection portion and at least one nozzle, and a tubular receiving portion for receiving the tubular connection portion. The tubular connection portion may be arranged to be inserted in the tubular receiving portion to create a seal between the tubular connection portion and the tubular receiving portion. The seal may allow the wash arm to rotate, and the tubular receiving portion and the tubular connection portion may be arranged to allow a washing liquid of the dishwasher to travel in a first direction to the wash arm.

Abstract: Provided herein are a spray arm assembly and associated dishwasher. The spray arm assembly may include a spray arm and a satellite arm. The spray arm may have a body defining an inlet opening and an outlet opening spaced along the body, and the body may receive washing fluid at the inlet opening and direct at least a portion of the washing fluid to an outlet opening. The body may further define one or more fluid supply channels extending between and fluidly communicating the inlet opening and the outlet opening. The satellite arm may be rotatably coupled to the spray arm at the outlet opening, and a portion of the one or more fluid supply channels may extend past the outlet opening to direct at least a portion of the washing fluid past the outlet opening and back towards the inlet opening before entering the outlet opening.

Abstract: A robotic vacuum cleaner having a nozzle inlet facing a surface to be cleaned, and a rotatable side brush. The rotatable side brush has bristles extending substantially in parallel with the surface to be cleaned, and the nozzle inlet includes a frame structure forming an opening, the opening being arranged in fluid communication with a debris receptacle. The bristles extend over a side portion of the nozzle inlet. The frame structure has a base portion extending substantially in parallel with the surface to be cleaned. The base portion extends at a first level. The frame structure at the side portion extends substantially in parallel with the surface to be cleaned at a second level. The first level is arranged closer to the surface to be cleaned than the second level.

Abstract: Example embodiments provide a dishwasher comprising a tub; a door configured for selectively sealing a forward access opening of the tub; a detergent dispenser located at an inner surface of the door; a spray arm mounted within the tub such that the spray arm is adjustable between a first height and a second height, the spray arm comprising a spray detergent nozzle; and a circulation pump configured to supply washing liquid to the spray arm. The dishwasher is characterized in that the spray arm is configured to emit a fan-shaped jet from the spray detergent nozzle when the washing liquid is supplied to the spray arm and the spray arm is configured to emit the fan-shaped jet that is incident upon the detergent dispenser both when the spray arm is positioned at the first height and when the spray arm is positioned at the second height.

Abstract: A method of operating a robotic cleaning device over a surface to be cleaned, the method being performed by the robotic cleaning device. The method includes: following a boundary of a first object while registering path markers including positional information at intervals on the surface; tracing previously registered path markers at an offset upon encountering one or more of the previously registered path markers; and switching from tracing the previously registered path markers to following an edge of a second object upon detection of the second object.

Abstract: A robotic cleaning device having a main body, a propulsion system configured to move the device across a surface and an obstacle detecting device configured to detect obstacles. The device further includes a processing unit configured to position the robotic cleaning device with respect to the detected obstacles from obstacle detecting device output data, and further to control the propulsion system to move the robotic cleaning device across the surface. The processing unit is configured to identify a landmark and its position from the obstacle detecting device output data, to derive at least one characteristic from the landmark to create and store a generated landmark signature. The processing unit is also configured to compare the generated landmark signature with predetermined landmark signatures and to determine whether the generated landmark signature matches one of the predetermined landmark signatures or not and operate the robotic cleaning device based on the determination.

Abstract: A robotic cleaning device having a propulsion system to move the robot over a surface to be cleaned, a controller to control the propulsion system to cause the robot to perform a rotating movement, and an inertial measurement unit configured to measure a change in heading of the robotic cleaning device caused by the rotating movement. The controller is further configured to acquire signals from an odometry encoder arranged on each drive wheel of the propulsion system for measuring the change in heading of the robotic cleaning device caused by the rotating movement, and to determine a relation between the change in heading measured using odometry and the change in heading measured using the angle-measuring device, wherein a difference in the two measured changes in heading indicates an estimate of wheel slip that occurs on said surface.

Abstract: A method of operating a robotic cleaning device over a surface to be cleaned. The method includes: registering roadmap nodes at intervals on the surface during cleaning, the roadmap nodes including positional information; and linking the roadmap nodes to form roadmap links in a roadmap graph, if the robotic cleaning device is driving directly from a previously registered roadmap node to a currently registered roadmap node. The roadmap links in the roadmap graph facilitate navigation of the robotic cleaning device.

Abstract: A robotic cleaning device having a main body, a propulsion system, a contact detecting portion connected to the main body, a dead reckoning sensor operatively connected to the propulsion system and an obstacle detecting device comprising a camera and a first structured light source arranged at a distance from each other on the main body. The robotic cleaning device may further include a processing unit arranged to control the propulsion system. The obstacle detecting device and the processing unit are arranged to estimate a distance to the landmark and to subsequently move the robotic cleaning device into contact with the landmark while measuring an actual distance to the landmark, whereby the actual distance is then compared with the estimated distance to determine a measurement error.

Abstract: A wash arm assembly may include: a wash arm having a circular opening with a center, an edge, and a mounting unit having a circular insertion portion and a supporting portion. The mounting unit may be inserted at least partly in the circular opening to mount the wash arm within the dishwasher and to allow rotation of the wash arm around a rotational axis. The insertion portion may be inserted at least partly in the circular opening to form a passage between the edge and the circular insertion portion when the mounting unit is inserted at least partly in the circular opening. The wash arm may include a protrusion, and the supporting portion and the wash arm may form a chamber delimited by the passage and the protrusion when the supporting portion supports the wash arm. A dishwasher including the wash arm assembly may also be provided.

Abstract: A robotic cleaning device including a main body having a front end portion with a front end wall, a rear end portion, a right side wall connecting the front end wall and the rear end portion and a left side wall connecting the front end wall and the rear end portion. At least one driving wheel is arranged to move the robotic cleaning device across a surface to be cleaned. A cleaning member is arranged at a bottom side of the main body for removing debris from the surface to be cleaned, the cleaning member being arranged in the front end portion of the main body. The main body is arranged such that its width is greatest between the right side wall and the left side wall, and the greatest width is located at the front end portion of the main body.

Abstract: A wash arm assembly may include wash arm having a tubular connection portion and a tubular receiving means for receiving the tubular connection portion. The tubular connection portion may include a first guiding surface and a second guiding surface, and the tubular receiving means may include a third guiding surface and a fourth guiding surface. The first guiding surface may be aligned to the third guiding surface and the second guiding surface may be aligned to the fourth guiding surface when the tubular connection portion is inserted in the tubular receiving means. The first, second, third and fourth guiding surfaces may be arranged to guide the tubular connection portion and the tubular receiving means into alignment with each other upon rotation of the wash arm. A dishwasher including the wash arm assembly may also be provided.

Abstract: A method of controlling rotating side brushes of a robotic cleaning device and a robotic cleaning device performing the method. The robotic cleaning device has a main body, a propulsion system arranged to move the robotic cleaning device across a surface to be cleaned, and a controller arranged to control the propulsion system to move the robotic cleaning device across the surface to be cleaned in accordance with navigation information. The robotic cleaning device has an opening arranged in a bottom side of the main body via which debris is removed from the surface to be cleaned, and at least one rotating side brush adjacent to the opening. The controller registers a speed with which the robotic cleaning device moves across the surface to be cleaned, and controls a rotational speed of the rotating side brush on the basis of the registered speed of movement of the robotic cleaning device.

Abstract: A robotic cleaning device and a method at the robotic cleaning device of performing cliff detection along a surface over which the robotic cleaning device moves. The method includes illuminating the surface with at least one light source, capturing an image of the surface, detecting at least one illuminated section in the captured image, and determining distance to objects in the at least one illuminated section of the captured image. The method further comprises comparing at least two of the determined distances and detecting an object in the captured image as a cliff when cliff when a relation between the at least two compared determined distances complies with a predetermined increase criterion.

Abstract: A robotic cleaning device having main body, at least one driving wheel to move the robotic cleaning device across a surface to be cleaned, and a brush for removing debris from the surface to be cleaned. The brush is arranged on a protrusion in a front end portion of the main body. The widest part of the main body is located between the protrusion and the opposite sidewall of the main body, and within the front end portion of the main body.

Abstract: A robotic cleaning device having a body, and an obstacle detecting device configured to obtain data from a vicinity of the robotic cleaning device. The robotic cleaning device further has a propulsion system configured to drive the robotic cleaning device across a surface to be cleaned, and a cleaning member. The device also has a processing unit arranged to extract at least one feature from data obtained by the obstacle detecting device, compare the attained feature with stored features and when the attained feature matches one of the stored features, deduce a position of the robotic cleaning device.

Abstract: A method of operating a robotic cleaning device over a surface to be cleaned. The method includes: registering roadmap nodes at intervals on the surface during cleaning, the roadmap nodes including positional information; and linking the roadmap nodes to form roadmap links in a roadmap graph, if the robotic cleaning device is driving directly from a previously registered roadmap node to a currently registered roadmap node. The roadmap links in the roadmap graph facilitate navigation of the robotic cleaning device.

Abstract: A dishwasher may include a washing chamber, a door having a detergent dispenser, and a wash arm arrangement with a rotatable first wash arm and a second wash arm which may be rotatably attached to the rotatable first wash arm. The second wash arm may include a spray nozzle arranged to expel washing liquid in a direction relatively the second wash arm. The second wash arm may be arranged to bring the spray nozzle along a circular path with a radius in a plane during a rotation cycle of the second wash arm. The direction may have a first angle in the plane relatively the radius and a second angle relatively the plane, and the spray nozzle may be arranged to be directed in the direction towards the detergent dispenser during at least a portion of the rotation cycle to cause the washing liquid to intersect with the detergent dispenser.

Abstract: A system of robotic cleaning devices and a method of a master robotic cleaning device of controlling at least one slave robotic cleaning device. The method performed by a master robotic cleaning device of controlling at least one slave robotic cleaning device includes detecting obstacles, deriving positional data from the detection of obstacles, positioning the master robotic cleaning device with respect to the detected obstacles from the derived positional data, controlling movement of the master robotic cleaning device based on the positional data, and submitting commands to the at least one slave robotic cleaning device to control a cleaning operation of said at least one slave robotic cleaning device, the commands being based on the derived positional data, wherein the cleaning operation of the slave robotic cleaning device is controlled as indicated by the submitted commands.

Abstract: A robotic cleaning device having a main body, an opening in a bottom side of the main body for removing debris from an area to be cleaned, a brush adjacent to the opening and a propulsion system configured to move the robotic cleaning device across the area. The robotic cleaning device may further include a positioning system having an obstacle detecting device configured to detect obstacles and a processing unit. The obstacle detecting device is configured to record positional data, and the processing unit is configured to generate a cleaning pattern from the positional data, the cleaning pattern including at least one spiral pattern having an outer periphery. The spiral pattern is arranged so that the robotic cleaning device spirals inwards from the outer periphery towards a center of the spiral pattern, and the brush faces the outer periphery while the robotic cleaning device follows the spiral pattern.