Abstract: An apparatus for removing a residue of a substance, extrudable through a nozzle of an automated end-effector, from an exterior of the nozzle is disclosed. The apparatus comprises a dispenser. The dispenser comprises a platform to support at least one cleaning pad. The dispenser further comprises a cage to maintain at least the one cleaning pad on the platform. The platform is movable relative to the cage. The apparatus also comprises a constricting device to circumferentially squeeze one of at least the one cleaning pad, adhesively picked up from the platform by the nozzle, around the nozzle once the nozzle is inserted into the constricting device. The apparatus additionally comprises a disposal receptacle to collect the one of at least the one cleaning pad, released from the constricting device.

Abstract: The invention relates to a device (3) for protecting an optical sensor (13) for a motor vehicle. According to the invention, the protection device (3) comprises: a housing (4) which is mounted in such a way that it rotates about a rotational axis (A1) and has a receiving element (19) designed to receive the optical sensor (13) such that the optical axis (15) of the optical sensor (13) merges with the rotational axis (A1), a transparent optical element (9) constrained to rotate with the housing (4) and designed to be arranged in front of the housing (4) facing the road and such that it is centred in relation to the optical sensor (13), and an actuator (5) for rotating the housing (4), so as to clean said optical element (9) by means of a centrifugal effect. The invention also relates to a driving assistance system (1) corresponding in this way to a cleaning method implementing such a protection device (3).

Abstract: A protective arrangement for an electric vehicle charging system includes a floor unit forming a recess and a linkage disposed in the recess. The linkage is extendable from the recess from a stowed position to an extended position. A cleaning device is disposed to discourage accumulation of debris into the recess and on the linkage when the linkage is in the stowed position.

Abstract: An apparatus for shift control in a vehicle includes: a transmission; an acceleration apparatus; and a control circuit electrically connected with the transmission and the acceleration apparatus. The control circuit shifts the transmission from a drive state to a neutral state when an activation condition for coasting is satisfied during travel of the vehicle, and corrects an oil pressure for release of a clutch in the transmission at the time of a kickdown shift, when a driver's input for kickdown is detected through the acceleration apparatus during the coasting.

Abstract: A surface cleaning device for cleaning a surface of a solar panel, wherein the surface cleaning device may include: a first dust carrying member; a second dust carrying member; a motor; and a motion delay assembly. The first dust carrying member and the second dust carrying member are coupled to the motor; wherein the motor is configured to cyclically move the first dust carrying member and the second dust carrying member along a path. The motion delay assembly is configured to cyclically introduce a momentarily delay in a progress of the first dust carrying member along the path, while the second dust carrying member contacts the surface thereby reducing a gap between the first dust carrying member and the second dust carrying member and induce air to exit the gap and progress along the surface and remove dust that precedes the second dust carrying member.

Abstract: A cleaning pad can be attached onto an inner surface of a transport belt so the cleaning pad can move with the transport belt along hardware of a marking system, including support rollers and a marking platen to remove ink from the marking platen and support rollers of the rendering device as the transport belt cycles through its typical path within the rendering system.

Abstract: A wheeled manure-removal vehicle for removing manure from an animal-shed floor includes a tank for storing manure, a manure collector, a liquid reservoir placed in the tank and having an opening for the supply of liquid to the reservoir and the discharge of liquid from the reservoir, and a flexible reservoir wall, to make it possible to vary the volume of the reservoir, depending on the fill level, and a dispenser operatively connected to the reservoir for dispensing liquid from the reservoir onto the animal-shed floor. The opening of the reservoir is situated in a top part of the reservoir. The reservoir furthermore includes a spacer which extends on the inside of the reservoir from the opening down to the lower part of the reservoir to ensure a liquid passage between the opening and a bottom part of the reservoir.

Abstract: A method for quantitating the amount of lint shed from a paper towel including cleaning a rectangular deposition surface having a short dimension and a long dimension, wherein cleaning comprises spraying the entire surface with glass cleaner, using a substantially lint-free squeegee to push the glass cleaner off one of two short sides of the surface, and using a substantially lint-free sponge to wipe the edges of the surface substantially free of lint; preparing a sample of paper towel to be analyzed; depositing lint from the sample onto the cleaned surface by moving the sample thereupon in a specific pattern; collecting the lint deposited on the surface; and determining the amount of collected lint.

Abstract: A pool cleaning robot that has a water jet electrohydraulic motorized propulsion/pump unit and a waste-collecting body having a battery for powering the unit, the unit and the battery being contained inside a rotary and sealed turret, external to the body of the robot. The robot advantageously has an automatic direction reversing device having a vane secured to the turret with a first end stop and second end stops.

Abstract: Provided is a sweeping device for a photovoltaic panel, applied to a photovoltaic unit composed of a plurality of photovoltaic panel arrays arranged in sequence, the sweeping device comprises a guide rail mechanism composed by an upper rail and a lower rail respectively disposed on an upper side and a lower side of respective photovoltaic panel arrays and a plurality of scraper mechanisms for sweeping the plurality of photovoltaic panel arrays, and each photovoltaic panel array corresponds to one scraper mechanism at most, the respective scraper mechanisms are slidably disposed on the guide rail mechanism to which an arbitrary photovoltaic panel array corresponds; the sweeping device further comprises a pull rope mechanism for driving the respective scraper mechanisms to reciprocate on the photovoltaic unit, and a driving mechanism connected with the pull rope mechanism.

Abstract: A substrate cleaning roll that has a cylindrical shape and scrubs a surface of a substrate by rotating about a rotational axis in a longitudinal direction in contact with the substrate, the longitudinal direction being parallel to the surface of the substrate, the substrate cleaning roll including a bevel cleaner at least at one end of the substrate cleaning roll in the longitudinal direction, the bevel cleaner including a sloping surface to be in contact with an outermost edge of a bevel portion at a rim of the substrate when the substrate cleaning roll comes into contact with the substrate and cleans the surface of the substrate.

Abstract: A method of cleaning a recoater of an additive manufacturing machine includes installing a cleaning fixture into the additive manufacturing machine, the cleaning fixture including one or more cleaning elements, advancing the recoater into contact with the one or more cleaning elements, and rotating the recoater about a recoater axis thus dislodging material from a recoater outer surface due to frictional contact with the one or more cleaning elements.

Abstract: A method and a set of pool cleaning robots for cleaning a pool. The set includes a first pool cleaning robot and a second pool cleaning robot that differ from each other by at least one unit out of a propulsion unit and a cleaning unit. Each one of the first pool cleaning robot and the second pool cleaning robot includes a filtering unit, a housing, and a controller.

Abstract: The present invention is directed to an improved mobile combustion cleaning system for removing debris from a plurality of semi-permeable heat exchange surfaces with a moveable distribution network configured for receipt of a combustion mixture from a mobile cart according to a configurable controller the configurable controller generating the impulse wave from the combustion mixture and for moving the moveable distribution network along a plurality of axes in response to a change in pressure.

Abstract: A pre-loaded cleaning substrate, and related systems and methods for picking up particles with an aspect ratio (L/D) greater than 300 (e.g., hair), or greater than 1200 (e.g., particularly long hairs). The substrate (e.g., a nonwoven) may include only a single layer of material. The pre-loaded substrate is loaded (e.g., during manufacture) with a cleaning composition. The fibers of the substrate may have an average diameter less than 15 ?m, the substrate may have an air permeability of 35 ft3/min to 75 ft3/min, and the liquid cleaning composition may have a surface tension of less than about 50 dynes/cm. Together, the combination of the particular substrate and cleaning composition may facilitate markedly improved ability to pick up high L/D aspect ratio particle debris (e.g., such as hair), while retaining such particles (e.g., providing hair retention index values of at least 20).

Abstract: An apparatus for cleaning a surface of solar collectors or photovoltaic installations includes at least one cleaning head that comprises at least one cleaning member. The cleaning member can be set into rotation. The apparatus also includes a movement device for moving the cleaning head over at least a part of the surface to be cleaned. The movement device has a first movement unit movable in a first direction and a second movement unit. The cleaning head is movable transversely or obliquely to the first movement direction by the second movement unit along a guide that is connected to the first movement unit. A drive device that is arranged at the first and/or second movement units makes it possible to automatically move the first movement unit in dependence on a position of the second movement unit.

Abstract: A foam brush that has nodules on an outer diameter surface of the brush that have a pitch to diameter ratio (P/D) of between 1.2 and 1.5 and a nodule height to nodule diameter ratio of 0.2 to 0.5 can be used to achieve improved small particle and organic residue removal from substrates following CMP processing. CMP cleaning brushes of the disclosure may also be prepared with foams that are relatively soft and have a compression strength of less than 90 grams/cm2. CMP cleaning brushes with such P/D and H/D ratios, and optionally a compression strength of less than 90 grams/cm2 can be used in a variety of CMP cleaning processes including post copper CMP processes.

Abstract: The wipe includes an elongated, shallow v-shaped tissue wipe having proximal and distal ends and, at the terminal proximal end, laterally spaced apart left-side and right-side finger apertures. Upper and lower tissue layers form finger apertures. An angle controller limits the v-shape of the wipe. A plurality of elongated corrugated ribs are longitudinal support elements and the upper tissue layer of said left and right side finger apertures form respective left and right finger tents permitting lateral expansion of the wipe between the finger apertures. Another embodiment has at least two elongated corrugated ribs disposed intermediate the laterally spaced apart left-side and right-side finger tents thereby permitting lateral expansion of said wipe the finger tents. The v-shaped wipe forms a distal excrement collection surface on a distal leg of the wipe longitudinally spaced apart from a proximal leg. The proximal leg terminates at the entrance of the finger tents.

Abstract: A drying apparatus is disclosed that includes at least a first absorbent layer and a waterproof layer attached to the first absorbent layer to form a drying body. At least three elongated handles can extend from radially from the drying body. Wet items such as food can be placed on the drying body and the elongated handles can be brought together to wrap the drying apparatus around the items. The elongated handles can be grasped by a user's hand and the drying apparatus can be swirled or slung by the elongated handles to force water and moisture from the items and into the absorbent layer of the drying apparatus to dry the items.

Abstract: A parasitic cleaning system for cleaning the reflective surfaces of a heliostat is disclosed. The system includes a blade carriage assembly that cleans the surface by imparting a frictional force as the carriage assembly moves across the surface to be cleaned. A cleaner drive system controls the motion of the blade carriage assembly over the surface. A guide system connects the cleaner drive system to the blade carriage assembly. The cleaner drive system applies a spring force to move the blade carriage assembly upwardly. The same spring system controls the lowering of the blade assembly over the surface to be cleaned.

Abstract: A user-input device includes a user-actuatable trigger configured to pivot about a trigger axis, a posture sensor configured to determine a posture of the user-actuatable trigger about the trigger axis, a force sensor configured to determine an actuation force applied to the user-actuatable trigger, and a force-feedback motor operatively coupled to the user-actuatable trigger. The force-feedback motor is configured to activate based on a force-feedback signal and adjust a user-perceived state of the user-actuatable trigger.

Abstract: The present invention reduces adhesion of trace metals in ultrapure water for cleaning products, and inhibits the metal contamination of an object to be cleaned. Provided is a metal contamination inhibitor that contains a polymer having an ion-exchange group, such as a polystyrene sulfonate having a molecular weight of at least 100,000. Trace metals in ultrapure water are adsorbed through an ion-exchange reaction of the polymer having the ion-exchange group, and can thus be inhibited from adhering to products. Also provided is a method for cleaning a product with ultrapure water to which the metal contamination inhibitor has been added. Preferably, the ultrapure water to which the metal contamination inhibitor has been added flows through a separation membrane module, and the products are cleaned with permeated water.

Abstract: An apparatus for non-evaporative drying comprises a solvent permeable transfer substrate having a first surface and a second surface opposite the first surface. An ejector is configured to eject a droplet comprising at least one solvent onto the first surface of the transfer substrate. A reservoir comprising a draw solution is configured to place the draw solution in contact with the second surface of the transfer substrate, and a print substrate is configured to contact a portion of the first surface of the transfer substrate.

Abstract: The door mat is a dry disinfection apparatus. The door mat comprises a pedestal, a sheeting pad, and a disinfecting substance. The disinfecting substance forms a coating on the sheeting pad. The sheeting pad mounts on the pedestal. The door mat is used by having a person step on the sheeting pad of the door mat during the normal walking process. The disinfecting substance chemically reacts with microorganisms found on the exterior surface of the footwear (or foot) placed on the sheeting pad. This chemical reaction mitigates the risk of subsequent contamination.

Abstract: A self-advancing cleaner and a method of operating the self-advancing cleaner. In an embodiment, a rotatable member can engage a transport belt, wherein the rotatable member includes a cleaning surface comprising a surface sufficiently rough to collect and take away ink debris from the transport belt. During a cleaning operation the cleaning surface remains stationary while the transport belt moves in a sliding relative motion with respect to the cleaning surface, which allows the ink debris to be collected on the cleaning surface. Once an ink contamination level associated with the ink debris attains a threshold and a set friction exceeds the threshold, the self-advancing cleaner advances.

Abstract: The cleaning kit includes a first liquid-tight container and a second liquid-tight container adapted to be received within the first container to be ruptured by the application of pressure to the container by a user. The second container includes a sealable liquid-tight pouch; a baffle extending at least partially across the pouch adapted to reduce accidental rupture caused by handling during shipping and a frangible seal along at least a portion of an outer edge of the pouch. A cleaning liquid may be in the second container, wherein the second container is adapted to be openable while it is located in the first container to release the liquid from the second container into the first container. Also, there may be at least one absorbent applicator in the first container and adjacent to the second container in the first container whereby the release of cleaning liquid from the second container is applied to the applicators in the first container.

Abstract: Cleaning compositions and methods for removing chewing gum, its components and other sticky soils from surfaces, especially production facilities, are disclosed. Cleaning composition solutions that do not require a rinse step are disclosed and suitable for treatment of surfaces having indirect food contact. In an aspect, the cleaning compositions and methods employ a scraping-spraying-wiping procedure.

Abstract: While a substrate is being rotated, the lower surface of a brush is moved along the upper surface of the substrate. The brush and a spray nozzle are moved upward from a takeoff position to a lower non-contact position so as to separate the lower surface of the brush from the upper surface of the substrate. The spray nozzle generates the droplets in a state where the brush and the spray nozzle are located in the lower non-contact position so as to make the droplets collide with the upper surface of the substrate, and then the droplets colliding with the upper surface of the substrate are discharged from a gap between the lower surface of the brush and the upper surface of the substrate while the droplets are being supplied to the lower surface of the brush.

Abstract: The present invention is a cuvette assembly for use in optically measuring at least one characteristic of particles within a plurality of liquid samples. The cuvette assembly comprises a main body having internal walls and external walls, and a plurality of cuvettes within the main body at least partially being defined by the internal walls. Each of the plurality of cuvettes has a liquid-input chamber for receiving a respective one of the plurality of liquid samples, a filter, and an optical chamber for receiving a respective filtered liquid sample caused by passing the respective one of the plurality of liquid samples through the filter. Each of the optical chambers includes an entry window for allowing transmission of an input light beam through the filtered liquid sample and an exit window for transmitting a forward scatter signal caused by the particles within the filtered liquid sample.

Abstract: An apparatus for cleaning an inner surface of a slot includes a first block segment that has an outer perimeter that conforms to and fits inside the inner surface of the slot. A first cleaning pad is connected to the first block segment and extends beyond at least a portion of the outer perimeter of the first block segment.

Abstract: A car wash system including a hydraulic pump, the pump being overcapacity for the rotating cleaning elements to which it is connected. An output from the hydraulic pump is connected to a hydraulic motor, which is, in turn, connected to a generator. The generator is connected to a service panel. Thus, some of the spare capacity of the hydraulic pump may be used to generate electricity which may be returned to the grid, reducing operating costs of the automated car wash.

Abstract: A system includes an unmanned aerial vehicle including a chassis, a tank attached to the chassis, a sprayer fluidly connected to the tank, a heating element attached to the chassis, a fan drawing air over the heating element, and a clamp attached to the chassis; and a computer in communication with the unmanned aerial vehicle and programmed to instruct the clamp to attach to an external sensor of a vehicle, instruct the sprayer to spray water and detergent onto the external sensor, and instruct the fan to blow heated air at the external sensor.

Abstract: Exterior cleaning machine in wind turbine-towers, which is coupled to lifting means (7) in a parallel direction in relation to the outer surface of a mast (1) of a wind turbine, and wherein said machine comprises at least one flexible roller (2a, 2b) configured to come in contact with part of the surface of a mast (1) of a wind turbine, a plurality of magnets (3) facing part of the outer surface of the mast (1) and configured to attract the machine with regard to said mast (1) via magnetic phenomena; at least one tank (4a, 4b) configured to receive a cleaning product; a plurality of rolling means (5) between the structure and said mast (1); and remote control means (6) of the lifting motion of said machine associated with lifting means (7).

Abstract: Provided is a substrate processing apparatus including a liquid processing unit that performs a liquid processing on a substrate; a drying processing unit that performs a drying processing on the substrate in a wet state; a first conveyance unit that conveys the substrate to the liquid processing unit; a second conveyance unit that conveys the substrate in the wet state from the liquid processing unit to the drying processing unit; and a third conveyance unit that conveys the substrate before the liquid processing in the liquid processing unit and to convey the substrate after the drying processing from the drying processing unit. The first and second conveyance units and the drying processing unit are disposed on a side that faces the third conveyance unit, and the liquid processing unit is disposed on a side that faces the first and second conveyance units and is opposite to the third conveyance unit.

Abstract: An absorbent apparatus is provided for an air dryer purge air cleaner. The absorbent apparatus comprises a volume for containing absorbent material. The absorbent apparatus also comprises absorbent material that is both oleophilic and hydrophobic and is packed in the volume to provide a packed bed of absorbent material with a predetermined packing density.

Abstract: A surface disinfecting assembly for sterilizing a sole of a shoe includes a box that is positionable on a floor and is positioned adjacent to a selected area such that the box can be stepped in. A pad is positionable in the box and the pad is infused with a fluid antiseptic. In this way the pad sanitize a sole of the shoe thereby inhibiting the shoe from transferring bacteria into the selected area. A cushion is positionable adjacent to the box and the cushion can be stepped upon. The cushion is comprised of a fluid absorbent material for absorbing the fluid antiseptic from the sole of the shoe after the pad is stepped upon.

Abstract: Embodiments of methods and apparatus for removing particles from a surface of a substrate, such as from the backside of the substrate, are provided herein. In some embodiments, an apparatus for removing particles from a surface of a substrate includes: a substrate handler to expose the surface of the substrate; a particle separator to separate particles from the exposed surface of the substrate; a particle transporter to transport the separated particles; and a particle collector to collect the transported particles.

Abstract: An assembly for cleaning a sensor cover according to an exemplary aspect of the present disclosure includes, among other things, a sensor provided within the sensor cover, a wiper configured to wipe the sensor cover, and a vibrating motor configured to vibrate at least one of the wiper and the sensor cover. A method is also disclosed.

Abstract: Aspects of the invention provide a disinfecting pad for disinfecting and sterilizing objects. A plurality of pixelated light emitting sources are located on the flexible pad in an array, wherein a pixel characteristic radius is approximately 1/10 millimeter to approximately 1 centimeter and the plurality of pixelated light emitting sources covers at least 25% of the flexible pad. Each of the plurality of pixelated light emitting sources includes at least one ultraviolet radiation source. The system includes set of sensors for acquiring data for the at least one object, wherein the data includes a presence and a location of the at least one object. A control system for selectively operating the at least one ultraviolet radiation source of the plurality of pixelated light emitting sources based on the presence and the location of the at least one object.

Abstract: A set of pool cleaning robots for cleaning a pool, wherein the set includes a master pool cleaning robot and a slave pool cleaning robot.

Abstract: The invention relates to a method of cleaning at least a part of a cubicle from a row of individual cubicles in a stable, each cubicle having lateral partitions extending in the longitudinal direction on each side of the cubicle, the method comprising the steps of providing an animal presence sensor for detecting the presence of an animal in a cubicle, and providing an autonomous unmanned vehicle, the vehicle comprising a control system for controlling the operation of the vehicle and cubicle floor cleaning means, and the method further comprising the steps of detecting by an animal presence sensor a first of the cubicles free of an animal, detecting whether an animal is present in a second of the cubicles neighboring next to the first cubicle, and controlling the autonomous vehicle to clean the first cubicle in a first cleaning mode that is dependent on the presence of an animal in said second neighboring cubicle. The invention also relates to an autonomous unmanned vehicle for cleaning cubicles.

Abstract: According to the present invention, a semiconductor inspection device includes a control section that outputs a signal to inspect a semiconductor wafer, a contact section comprising contact terminals connected to the control section, a probe card that can simultaneously contact a plurality of semiconductor chips formed on the semiconductor wafer and a drive section, wherein the contact terminals can contact some of electrode pads provided for the probe card and the drive section drives the contact section so as to switch electrode pads in contact with the contact terminals.

Abstract: A disposable cleaning pad having a grout cleaning brush includes a bristle attachment for use with a disposable pad. The bristle attachment is molded into a rectangular base piece forming a stand-alone removable brush that can be removably attached to a disposable pad. A top rectangular piece of similar dimensions to the base is connected to the end portion of the base by way of a hinge. The ends opposite the hinge have mating clasps that allow for the brush assembly to be securely yet removably fastened to an existing cleaning pad which is then mounted in the normal manner to the cleaning system. The brush assembly enjoys a longer life than that expected from a disposable cleaning pad thus the brush assembly may be reused many times before it needs to be replaced.

Abstract: A brush cleaning apparatus includes a wafer support configured to support a wafer, and at least one cleaning brush moveable relative to the wafer support. The at least one cleaning brush has opposite first and second sides, and, on the first side, a planar cleaning surface configured to come into contact with the wafer supported by the wafer support to remove contaminants from the wafer.

Abstract: A heat exchanger cleaning device is provided. The cleaning device includes a drive motor configured to rotate a gearbox, a slip clutch and a support beam about a first axis. The support beam carries a thread rod, a second motor, and one or more carriage assemblies. The carriage assemblies move linearly as the second motor rotates the threaded rod. The carriage assemblies include a support tube for receiving an ultra-high pressure tube therethrough. The carriage assemblies adjust relative to the heat exchanger such that the UHP tube may be inserted through the support tube into a hole of the heat exchanger. Therein the UHP tube may be advanced to clean sediment from the heat exchanger tube.

Abstract: According to the present disclosure, both first and second cup bodies are brought into a state of being close to each other by lifting one of the first and second cup bodies. A first gap between a gap forming portion formed on the lower surface of a first protruding portion and the upper surface of a second protruding portion is narrower than a second gap between a portion of the first protruding portion where the gap forming portion is absent, and the upper surface of the second protruding portion. In this state, a cleaning liquid is supplied to the second gap. Since movement of the cleaning liquid that tends to flow radially outward is restricted by the first narrow gap, the entire area between the first and second protruding portions may be filled with the cleaning liquid so that the surface to be cleaned may be evenly cleaned.

Abstract: Tools for installing network hardware in server racks may self-adhere to a server rack, alleviating the need for cap screws to attach the tool to the rack. The tool also may support the weight and aid alignment of the network hardware in a rack unit during installation. In some embodiments, the tool may include one or more spring-loaded locks adapted to couple to corresponding holes in the rack. The network device may rest atop the tool so that the network device is properly aligned for installation in the rack unit above the tool. In operation, a technician may couple one or more tools to the rack in the slot below the intended rack unit for the network device to provide hands-free support of the weight of the network device. The technician may then use both hands to screw the network device to the rack.

Abstract: The present invention prevents or alleviates cleaning unevenness in cleaning of a substrate with the use of a roll cleaning member having protruding members. The roll cleaning device includes: a substrate support member that supports and rotates a substrate W; and an upper roll cleaning member (52) for scrub cleaning a surface of the substrate W which is rotated by the substrate support member, while rotating. The upper roll cleaning member (52) has a plurality of protruding members provided thereon that are arrayed in the longitudinal direction thereof, and slidably contact the surface of the substrate W. The roll cleaning device cleans the substrate W so that the trajectories of high cleaning force regions out of the parts of the protruding members which slidably contact the substrate W are present without a gap in a radial direction of the substrate W.

Abstract: A brush is moved from a central position to an outer periphery position while the brush is contacted with an upper surface of a substrate being rotated at a first rotational speed. In this way, a flat region of the substrate is scrub-cleansed. Thereafter, the brush is contacted with a bevel region of the substrate being rotated at a second rotational speed lower than the first rotational speed. In this way, the bevel region of the substrate is scrub-cleansed. Thereafter, while the substrate is rotated at a third rotational speed higher than the second rotational speed, the brush is disposed at an overlapping region cleaning position. In this way, an overlapping region of the flat region and the bevel region are scrub-cleansed.

Abstract: Components of automatic pool cleaners (APCs) are detailed. The components may include brushes configured to attach to blades of scrubbers of the APCs. The flexible brushes may rotate as their associated blades rotate and have fingers which flex so as to adduce contact between a to-be-cleaned pool or spa surface and bristles protruding outward from sides of the fingers.