A cleaning tool for cleaning an optical connector includes: a head that presses a cleaning unit against the optical connector; a supply reel that supplies the cleaning unit to the head; and a take-up reel that collects the cleaning unit from the head. The supply reel and the take-up reel are disposed rotatably about a common rotation shaft.

A pressure washing system is disclosed for integration into a recreational vehicle or other large mobile vehicle. The wand of the system includes a rotating brush and one or more sensors to determine a distance from, pressure against, or orientation with respect to the vehicle. While a pump is supplying water to be output by the wand, the distance, pressure, orientation, or other sensor readings are continuously used to modify output characteristics of the wand, including the output water pressure and the speed of rotation of the brush. As a result, no more pressure is supplied by water or brush bristles than is necessary, avoiding overuse of water or damage to outer surfaces of the vehicle. Sensor readings may include one or more of a camera feed, sonar, lidar, pressure feedback, and accelerometer data. The system may also be responsive to a mobile app on a user's mobile computing device.

A cleaning tool is disclosed for cleaning an object (e.g., a threaded fastener) and retaining debris from cleaning the object. The cleaning tool can comprise a housing operable to be rotated by hand or by a hand tool, and a cleaning chamber formed through the housing. A plurality of retaining cavities are formed through the housing and in fluid communication with the cleaning chamber, and a plurality of cleaning elements (e.g., shafts having bristles) are supported by respective retaining cavities, such that a portion of the cleaning elements (e.g., wire bristles) extend into the cleaning chamber for cleaning the object upon rotation of the housing relative to the object. Elastic elements can be supported by the housing for biasing the cleaning elements to accommodate cleaning different sizes of objects. Associated systems and methods are provided.

A vehicle wheel cleaning apparatus configured to provide cleaning of a vehicle wheel particularly the interior surfaces thereof. The vehicle wheel cleaning apparatus is operable to be coupled to a water source such as but not limited to a pressure wand. A clamping member is included to provide a sealable coupling to the water source. The clamping member has a first portion secured to the water source and a second portion secured to the apparatus. A rotational coupling is provided and is configured to allow rotational movement of a ball assembly. The ball assembly includes a stem member secured to the rotational coupling and a solid silicon ball. Formed in the ball is a channel wherein the channel has divergent portions that are directed to opposing sides of the ball so as to discharge water therefrom.

A roadway or pavement sweeper with multiple sweeping modes for the removal of debris from a swept surface may, in some embodiments, include a sweeper vehicle having a pair of side-brooms independently movable between a retracted and extended position for sweeping debris into an area therebetween and at least one material-transfer broom to sweep a portion of the debris accumulated between the side-brooms as the vehicle moves in its direction of travel. A fan-driven suction-inlet may be provided at or adjacent each side of the vehicle. The at least one material-transfer broom may rotate in a first or other direction to transfer debris for entrainment into a selected suction-inlet for transfer to a debris hopper. Other embodiments are also described.

A vehicle washing system which includes an elevated support rail structure which has a wash tool movably mounted thereon. The support rail structure includes a fixed forward rail section and a selectively movable rear rail section. The movable rear rail section is movable between a retracted position and an extended position with respect to the forward rail section so as to be able to wash long vehicles and short vehicles.

A solar tracker waterless cleaning system for cleaning solar panels of a solar tracker being able to be positioned at a pre-determined angle, including a docking station and an autonomous robotic cleaner (ARC), the docking station coupled with an edge of the solar tracker, the ARC including at least one rechargeable power source, at least one cleaning cylinder and a controller, the cleaning cylinder including a plurality of fins which rotates for generating a directional air flow for pushing dirt off of the surface of the solar tracker without water, the controller including a motion sensor for determining an angle of the solar tracker and a heading of the ARC, the docking station including at least one electrical connector for recharging the rechargeable power source, the controller for controlling a cleaning process of the ARC and for transmitting and receiving signals to and from the ARC.

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/cm.sup.2. CMP cleaning brushes with such P/D and H/D ratios, and optionally a compression strength of less than 90 grams/cm.sup.2 can be used in a variety of CMP cleaning processes including post copper CMP processes.

A discharge port 31 is arranged inside a chamber 9. A circulation flow passage 50 circulates a processing liquid, while maintaining the processing liquid at a predetermined temperature. A discharge flow passage 32 is branched from a circulation flow passage 50 to guide the processing liquid to the discharge port 31. A return flow passage 33 is connected to the discharge flow passage 32 inside the chamber 9 and allows the processing liquid running through the discharge flowpassage 32 to flow back to the circulation flow passage 50.

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.