Abstract: A high-pressure instant steam generator is disclosed. The steam generator unit comprises a HP unit, a HP water-band heater, an evaporator, a super heater, and at least a spray gun attachment. The high-pressure unit comprises a main pump for supplying a liquid from a storage tank in case of independent unit. The HP water band heater connected to the HP unit via a needle valve and a first manifold. The evaporator connected to the band heater via a second manifold and a check-valve, configured to convert the liquid into steam at a saturation point. The super heater connected to the evaporator via a check-valve, configured to heat the generated steam to the saturated temperature. The high-pressure steam attachment or spray gun connected to the super heater via a fourth manifold, configured to spray the generated high-pressure steam for sanitizing the surface the surface of the object being treated.

Abstract: A double-action friction stir joining system, which includes a double-action friction stir joining device, a cleaning mechanism having a dressing member, a robot, and a control device. The double-action friction stir joining device includes a first rotary driver configured to rotate a pin member and a shoulder member, and a tool driver configured to reciprocate the pin member and the shoulder member. The control device is adapted to (A) operate the tool driver so that the pin member is thrusted into the shoulder member, (B) operate the first rotary driver so that the shoulder member rotates, and (C) operate the robot so that the robot holds the double-action friction stir joining device and the dressing member contacts an inner circumferential surface of the shoulder member.

Abstract: An industrial floor scraper equipment shield having an industrial floor scraper assembly, a front shield assembly, a fastening assembly, a wedge shield assembly, and a side shield assembly is disclosed herein. The industrial floor scraper assembly includes a ride on floor scraping vehicle that has hydraulic hoses that are used to power and operate the scraper blade. The shields of the aforementioned assemblies are mounted to the front and sides of the industrial floor scraper, said shields are attached to said industrial floor scraper using said fastening assembly. Thereby covering the previously exposed hydraulic hoses and create a debris deflecting shield. Wherein the shield helps prevent the hydraulic hoses from being damaged by any flying sharp debris.

Abstract: A ride-on floor machine, including: a frame including a lower frame portion; a drive system carried by the frame; and a blade control system carried by the lower frame portion, the blade control system including: a blade holder pivotably attached proximate a front end of the lower frame portion; and a linear actuator coupled to the blade holder at a first end and coupled to the lower frame portion at a second end, wherein the actuator extends along a center line parallel to the lower frame portion and is operative to move between an extended position where the blade holder is in an up position and a retracted position where the blade holder is in a down position.

Abstract: An apparatus is disclosed for preparing a food article (300) such as a corn dog. The apparatus includes a frame (10) mounting a loading station (50), a dipping station (162), a frying station (190) and an unloading station (220). The loading station (50) inserts one end (306) of a stick (302) into the food article (300) and the other end (304) into an aperture (40) in a stick bar (38). The stick (302) and food article (300) are held in the aperture (40) by a spring loaded plunger (310) extending into the aperture (40). The spring loaded plunger (310) holds the stick (302) and food article (300) on the stick bar (38) while the food article (300) is dipped in batter at the dipping station (162) and fried at the frying station (190). The cooked food article (300) and stick (302) are removed from the stick bar (38) at the unloading station (220) for shipment to the customer.

Abstract: The disclosure relates to devices, systems, methods and computer readable media for providing network management of remote card handling, and physical manipulation. More particularly, the disclosure is directed to networked devices, systems, methods and computer program methods for remotely, physically modifying a card while leaving a physical record of the modified card for inspection and validation and delivering the manipulation results to a user, and/or other third parties, for example, scratch lottery cards and ballot cards.

Abstract: The disclosure relates to the technical field of deburring in machining, in particular to a flexible automatic deburring device, comprising a main body support, a lifting assembly, a rotary burr brushing assembly and positioning and clamping assemblies. The lifting assembly can move up and down to adapt to inner cavities of workpieces with different depths, springs are arranged on the bottom surfaces of brush holders, so that brushes can float up and down to adapt to hubs with different spoke inner cavity shapes, and it is guaranteed that the brushes make contact with spoke inner cavities all the time; in this way, hubs with the same size but different shapes can use the same brush mechanism, it is unnecessary to prepare brushes suitable for all wheel types, thus greatly reducing the workload of replacing deburring brushes, saving the storage space in a workshop and increasing the burr brushing flexibility.

Abstract: A system that is towed behind a vehicle to remove snow and ice from pavement. The system includes a trailer. The trailer includes a longitudinal substantially rigid frame structure, a trailer hitch connected to a front end of the trailer for selective connection-disconnection to the vehicle, and a suspension appliance connected to a rear portion of the trailer to separate at least a rear portion of the frame structure from the pavement. At least two additive snow and ice removal tools are connected to the frame structure and located underneath the trailer and over the pavement, each of the tools enabling a different type of snow and ice removal from the pavement when towing the system behind the vehicle to remove snow and ice from the pavement.

Abstract: A wire cutter suitable for creating a cavity in cancellous bone includes a restrainer and a cutting wire, wherein a portion of the cutting wire will protrude from a slot formed on the restrainer to the outside of the restrainer and inside a bone, when the cutting wire is advanced in a tunnel formed in the restrainer and toward a closed end of the tunnel.

Abstract: A system for cleaning heat exchange tubes includes one or more cleaning robots that are assembled with the tubes. Each cleaning robot includes a housing having an opening extending therethrough for receiving one of the heat exchange tubes, a scraper blade extending into the opening of the housing, the scraper blade having an inner scraping edge that opposes the outer surface of one of the tubes, a wheel coupled with the housing for rolling over the outer surface of the tube, and a motor for driving rotation of the wheel to move the cleaning robot over the outer surface of the tube. The system includes a system controller with one or more microprocessors and one or more software programs for monitoring and controlling operation of the cleaning robots.

Abstract: A work vehicle comprising: a drive wheel unit that is provided in a vehicle body and is configured to be driven by a travel drive mechanism; a work unit that is provided in the vehicle body and is configured to perform work on a work target; a battery provided in the vehicle body; a motor that is configured to receive electric power from the battery and drive the work unit; an inclination sensor configured to detect an inclination of the vehicle body relative to a horizontal plane; and a first captured image acquisition unit configured to acquire a captured image that shows surroundings of the vehicle body when the work is being performed.

Abstract: A gutter broom is provided. The gutter broom can include a mandrel, one or more carriers, each carrier removably coupled to the mandrel, and one or more bristle strips, each bristle strip removably coupled to one of the carriers. The gutter broom components can be recyclable and modular, requiring no tools for assembly or servicing.

Abstract: A shingle remover includes a fork riser, a pusher, and front and rear crank shafts. The fork riser includes forks separated by fork spacers. The forks are configured to push under shingles and separate them from roof structures. The fork spacers and forks pull out the nails associated with the shingles. Scoops on some of the forks urge pulled shingles away from the shingle remover for disposal. A fork carrier associated with the fork riser secures the forks to a front crank shaft while a cam associated with the front crank shaft periodically urges the forks forward under the shingles. A slot in the fork carrier engages with the rear crank shaft to limit movement of the forks to a substantially horizontal back-and-forth direction. The pusher includes tines that bite into the roof to oppose movement of the shingle remover as the forks push under and remove the shingles.

Abstract: A tool that attaches to an underside of a rotating floor stripper machine that includes a plurality of bracket assemblies that each contain a blade assembly. The blades are equally spaced around segments of the underside of the plate. The cutting angle of each blade is selected to have a specific angle of incidence and each blade is configured askew from the radial line of the plate. Each blade assembly further includes a suspension to absorb imbalance caused by interaction with irregular surfaces during operation to greatly smooth out the machine and improve control. Alternate forms of cutting blades are provided to remove different materials and cause smoother or coarser cuts.

Abstract: The present invention is a device to remove gravel from a roof. The device is a blade assembly vertically mounted on a riding drive mechanism, such as a tractor, and the blade assembly has a smooth, horizontal blade, such as used for snow plowing, and mounted proximate and parallel to the smooth blade is a serrated blade having an up position and a down position. In the down position, the serrations extend to the roof to loosen and remove gravel. In the up position, the serrations are above the edge of the smooth blade which scrapes the loosened gravel. A downward force is provided to force the serrations between the gravel.

Abstract: The present disclosure provides a cleaning device for nozzle, which includes: a base seat and a plurality of scrape components defined on the base seat, the scrape components are arranged in a straight line, a rear end of each of the scrape components form a notch, the notches match with the nozzle, the nozzle passes through the notches of all the scrape components in sequence and contracts with all the scrape components when the nozzle is scraped, to scrape the residue photoresist away from the nozzle by scraping the nozzle multiple times.

Abstract: A wheeled manure-removal vehicle for removing manure from an animal-shed floor includes a scraper assembly for scraping the manure together into a manure-storage space by scraping across the animal-shed floor. The scraper assembly includes a flexible, strip-shaped scraping element which is partly arranged around the manure-storage space and a rolling body. The rolling body extends on a side of the scraping element which faces away from the manure-storage space in order to be in contact with the scraping element at least while scraping the manure together, and has, on the side facing the scraping element, a rolling surface which is convexly rounded towards the scraping element. The use of the rolling body for contact with the scraping element has an advantageous effect on the life of the scraping element on the vehicle.

Abstract: The present invention provides method and apparatus for removing a sealant from a surface. More specifically the present invention provides methods an apparatus for efficiently and consistently removing polysulfide sealant from a surface on an aluminum airplane wing without damaging the wing.

Abstract: Apparatus, systems, and methods for the maintenance, repair, modification, cleaning, disassembly, and reassembly of firearms and firearm components are disclosed. Particular embodiments include tools to aid in the removal and insertion of an extractor pin from the bolt assembly of an AR-15 or M-16 rifle. Preferred embodiments are directed to bolt assemblies for .223 and .308 imperial caliber firearms, as well as 5.56 and 7.62 metric caliber firearms. The tools include a housing with a channel to receive the bolt, a channel to insert a locking rod to orient and secure the bolt in the housing, a channel for inserting a removal rod to remove the extractor pin from the bolt or an inserting rod to insert the extractor pin into the bolt.

Abstract: Methods and apparatus for a chipping hammer adapter handle generally comprising an elongated shaft and a hammer receiver. The elongated shaft is coupled to the hammer receiver. The hammer receiver comprises a hammer handle housing configured to receive a chipping hammer handle, and at least one secure arm to secure a chipping hammer. The adapter handle further comprises a knee guard and at least one vacuum hose guide. The adapter handle allows a user to remain in a standing position while using a chipping hammer for tile removal. The more ergonomic position may prevent fatigue and health issues for the user.

Abstract: A motorized floor stripper machine includes a motor, a frame, and a blade carrier. The blade carrier is capable of holding blades of different sizes, which can be installed on the blade carrier. The blade carrier is mounted to the frame on shock absorbers. A cam on the frame is connected to the blade carrier by a linkage that includes a bearing block, a pivot plate, a pivot pin, and a support plate. The blade carrier includes ball bearings that fit within linear channels mounted to the frame, so that when the cam is driven in an orbital motion, the blade carrier moves in a generally linear forward-backward motion. The blade carrier is relieved and includes multiple sets of holes for securing blades of different sizes.

Abstract: A driven member of a metal peening machine is disclosed. The metal peening machine is configured to drive the driven member into contact with a work surface of a metal workpiece to deform the metal workpiece. The driven member includes a shaft with an impact end. At least one of a plurality of impact features, an impact feature with a non-flat impact surface, a non-round impact feature, and an asymmetrical impact feature is coupled to and protrudes from the impact end of the shaft. The at least one of the plurality of impact features, the impact feature with a non-flat impact surface, the non-round impact feature, and the asymmetrical impact feature defining at least one impact surface to be driven into contact with the work surface of the metal workpiece.

Abstract: Apparatus, systems, and methods for the maintenance, repair, modification, cleaning, disassembly, and reassembly of firearms and firearm components are disclosed. Particular embodiments include tools to aid in the removal and insertion of an extractor pin from the bolt assembly of an AR-15 or M-16 rifle. Preferred embodiments are directed to bolt assemblies for .223 and .308 imperial caliber firearms, as well as 5.56 and 7.62 metric caliber firearms. The tools include a housing with a channel to receive the bolt, a channel to insert a locking rod to orient and secure the bolt in the housing, a channel for inserting a removal rod to remove the extractor pin from the bolt or an inserting rod to insert the extractor pin into the bolt.

Abstract: A scraper blade for a frozen dessert machine includes a blade body extending from a first end to a second end. The blade body includes a cutting edge on a first side of the blade body facing a scraping direction. A biasing projection extends from a second side of the blade body in a direction opposite the scraping direction of the cutting edge. A frozen product machine includes a freezing cylinder defining a longitudinal axis and a rotating beater assembly within the freezing cylinder. The rotating beater assembly includes a beater body and a scraper blade as described above. The scraper blade is operatively connected to the beater body. The biasing projection of the scraper blade biases the cutting edge against an inner diameter surface of the freezing cylinder.

Abstract: A motorized floor stripper machine includes a motor, a frame, and a blade carrier. The blade carrier is capable of holding blades of different sizes, which can be installed on the blade carrier. The blade carrier is mounted to the frame on shock absorbers. A cam on the frame is connected to the blade carrier by a linkage that includes a bearing block, a pivot plate, a pivot pin, and a support plate. The blade carrier includes ball bearings that fit within linear channels mounted to the frame, so that when the cam is driven in an orbital motion, the blade carrier moves in a generally linear forward-backward motion. The blade carrier is relieved and includes multiple sets of holes for securing blades of different sizes.

Abstract: Disclosed is a machining system wherein provisions are made to be able to remove machining chips reliably without requiring human intervention. The machining system includes: an image processing unit which detects the position and amount of machining chips by comparing images captured of a workpiece and a machining tool before and after execution of a machining step; a condition judging unit which, based on the detected amount of machining chips, determines whether or not there is a need to execute a removal step; and a result judging unit which judges the result of the removal step by comparing the images captured of the workpiece W and the machining tool before and after the execution of the removal step.

Abstract: A floor stripping machine for removing floor covering from a floor surface includes a base, a motor secured to the base, a rear wheel arrangement driven by the motor, and a blade assembly. The blade assembly is secured to a remaining portion of the machine and has a removable clamp with a cutter. The machine has a forward downward sloping angle, a low center of gravity, and is obstruction free for mounting by an operator. The blade assembly may include a dovetail for a variety of tool heads. One example of a blade has a base flange, a pair of side flanges with forward leaning angles, and a hook in between each side flange and the base flange.

Abstract: The present invention relates to a street or industrial vacuum cleaner (1) on a chassis (50) and self-propelled using at least one drive motor comprising a guide element preferably taking the form of a handlebar (70) with at least one handle (740), a hand grip (730) and means or elements (710) for attachment to the chassis (50) of the vacuum cleaner (1), said attachment means or elements (710) making it possible, by the transmission of the movement applied to the hand grip (730), to steer said vacuum cleaner (1), characterized in that the handle (740) comprises a telescopic zone with a sliding part (745) able to move between a first position referred to as an extended position and a second position referred to as a retracted position, preferably with a return spring (780) and at least a switch (770) for detecting the position of the sliding part (745), said switch (770) being able to cause the street vacuum cleaner drive motor to switch off or reverse if the sliding part (745) is in the retracted position.

Abstract: A machine-mountable device facilitates removal of the cushioning acrylic and rubber layers overlying the concrete/asphalt base of tennis courts. The device includes: an attachment bracket, a support beam, a support plate, a scraper, and a stopper bar. The attachment bracket is configured to mount the device to any of one of several different transport machines (e.g., a loader, or forklift). The support beam is fixedly secured to the attachment bracket, and the support plate is secured to the support beam. The elongated scraper has a length between 12 and 20 inches, but is preferably between 14 and 15 inches, and optimally is about 16 inches long. The 16 inch scraper is releasably mounted to the support plate, and centered between the ends of the attachment bracket. The scraper removes the layers above the base, while the stopper bar causes the removed layers to simultaneously/automatically roll up like a carpet.

Abstract: An apparatus and method for cleaning fabrication equipment, such as for example wire feed tips provided on welding guns. Equipment of that nature usually includes an outlet through which joining or filling material is dispensed and which may easily become blocked by weld splatter or the like when in such close proximity to the work piece being fabricated. The apparatus provides a support means for holding the equipment, cleaning means for removing debris from the equipment, and control means for effecting relative movement of the support means and cleaning means in a swift and efficient manner.

Abstract: A ultrasonic cleanser includes: a housing; a ultrasonic sprayer, configured inside the housing; a ultrasonically vibrational scraper, coupled to the housing and extended out of the housing partly; a main circuit board, configured inside the housing, an output end of the main circuit board being in connection with the ultrasonic sprayer and ultrasonically vibrational scraper, and providing high frequency vibration signals; a button, configured on the housing and in electric connection with the main circuit board; and a power source, configured inside the housing, in electric connection with the main circuit board and providing power needed for the action of the main circuit board. The structure mention above combines two kinds of face cleansing manners; users may clean their faces with spray or scrape dirt on their faces by means of the physical approach with a scraper, thereby achieving a function combination and good clean effect.

Abstract: A cleaning tool scraps away undesirable slag which has accumulated on opposite sides of the slat of a worktable. The cleaning tool has a pair of cleaning assemblies each comprising a scraping tool. The scraping tools are positioned on opposite sides of a slat for simultaneously cleaning of the two sides of the slat. A single motor rotates both of the scraping tools. A biasing member retains the two scraping tools in close proximity to the slat as it is claimed.

Abstract: Idle mode reselection is presented herein. A virtual neighbor component can create at least one virtual neighbor object and associate the at least one virtual neighbor object with wireless access points. Further, a reselection component can facilitate idle mode reselection between a base station and a wireless access point of the wireless access points based on the at least one virtual neighbor object.

Abstract: The present invention relates to a device for partial decoating and/or machining removal of a steel sheet coated with a metal coating and/or provided with a parasitic layer, wherein the device has a machining tool in the form of a scraping roller and wherein the scraping roller comprises a cutting edge for scraping the metal coating and/or parasitic layer off the steel-sheet surface, and wherein furthermore the scraping roller is rotatable about a rotation axis perpendicular to a main plane of extent of the steel sheet, the scraping roller has a circumferential face which is concentric with the rotation axis and in which at least one circumferential groove is formed, the groove has two lateral groove boundary faces that originate from the groove bottom face, wherein at least one of the two groove boundary faces has the cutting edge and the device is configured such that during decoating and/or machining removal, the at least one cutting edge scrapes over the steel-sheet edge in a manner parallel to the main p

Abstract: The present invention discloses a slit nozzle cleaning device, the slit nozzle cleaning device comprises a scraper for cleaning the slit nozzle and an auxiliary inserting means, wherein the auxiliary inserting means is configured to guide the scraper into the slit nozzle. With the aid of the auxiliary inserting means, the scraper can enter the slit nozzle smoothly and precisely without the risk of breaking.

Abstract: An apparatus for removal of flooring is presented. The flooring removal apparatus comprises a telescopically adjustable top frame with front wheels and a telescopically adjustable vertical rear frame coupled to the rear side of the top frame. The vertical rear frame includes a pair of rear wheels for directional control. The top frame is configured with one or more braces to securely clamp the housing of a jack hammer. An adapter suitable for a particular flooring type is provided for coupling to the tip of the jack hammer.

Abstract: A tape cleaning device includes a blade that, while touching a recording tape that is running, scrapes foreign bodies from the recording tape; a roller that touches the recording tape and rotates along with the running of the recording tape, the foreign bodies scraped off by the blade being transferred to the roller; and a removal mechanism that removes the foreign bodies that have been transferred to the roller from the roller.

Abstract: An automatic scratch-off material removing device for lottery tickets comprises an enclosure, a power source, a brush, and a retention tray. The enclosure comprises a durable housing for the various components of the device having a loading slot where a user may insert a lottery ticket. The power source comprises a replaceable battery which is housed inside the enclosure and accessed via a removable cover located within a bottom surface of the enclosure. The brush comprises an electric rotating brush system which removes the scratch-off material from the ticket via a brush assembly. The excess scratch-off material falls into the retention tray, which is slidably removable from a rear portion of the enclosure.

Abstract: A system and method for receiving, handling and storing used rolls following unwinding of sheet material therefrom includes: (a) transferring the cores to a remnant cleaning station, (b) inspecting for (i) remnant material, (ii) repairable damage or (iii) irreparable damage; and (c) for those cores cleaned, repaired, or satisfactory as is, transferring them to a storage rack for the specific size and length.

Abstract: A method for cleaning quartz reaction tube is disclosed. The method includes the steps of: introducing a quartz reaction tube to a cleaning chamber, wherein the quartz reaction tube comprises a first end and a second end; sealing the first end and the second end of the quartz reaction tube with a first sealing element and a second sealing element respectively, wherein the first sealing element is coupled to an input pipe and a cleaning rod, and the second sealing element is coupled to an output pipe; supplying a first cleaning agent into the quartz reaction tube from the input pipe; utilizing the cleaning rod to perform a cleaning process; and expelling the first cleaning agent from the output pipe.

Abstract: An apparatus is provided having a scrubbing disc that includes sacrificial electrodes of an electrolysis cell.

Abstract: A device for removing a protective film off a sheet such as tickets or the like is described. The device has at least one removal or scraping roll of the protective film and at least one drawing or pulling roll of the sheet opposite the scraping roll and between which the sheet passes. The device also has a base and a roll unit mobile or removable with respect to the base and including the scraping roll and the drawing roll.

Abstract: An atmospheric pressure plasma source includes a body including a distal end, a blade extending from the distal end and terminating at a blade edge, a plasma-generating unit, and a plasma outlet communicating with the plasma-generating unit and positioned at the distal end. The plasma outlet is oriented at a downward angle generally toward the blade edge, wherein the plasma outlet provides a plasma path directed generally toward the blade edge. The plasma may be applied to the coating at an interface between the coating and an underlying substrate. While applying the plasma, the blade is moved into contact with the coating at the interface, wherein the blade assists in separating the coating from the substrate while one or more components of the coating react with energetic species of the plasma.

Abstract: A device for removing contaminants from a bus stab of an electrical enclosure is provided. The electrical enclosure includes an electrical bus member disposed in a first plane. The bus stab extends outwardly from the electrical bus member and is disposed in a second plane perpendicular to the first plane. The device includes a gripping assembly and a scraping assembly coupled thereto, the scraping assembly comprising a number of flexible members structured to scrape and thereby clean the bus stab, the device being structured to move in a direction parallel to the second plane when the flexible members scrape the bus stab.

Abstract: Disclosed herein is an automatic cleaning apparatus for a gun barrel having cleaning means, wherein the cleaning means includes: a cylindrical tube having a plurality of insertion holes along the circumference thereof; a rotary gear connected to and driven by a motor; and cleaning members each of which includes a rotary shaft inserted into the insertion hole and a bevel gear joined to the lower portion of the rotary shaft and interlocking with the rotary gear, wherein the insertion hole includes a small hole and a large hole communicating laterally with the small hole, and wherein a fixing member fixes the cleaning member by making the cleaning member come into contact with the small hole when the cleaning member is fixed and does not prevent that the cleaning member is separated to the outside of the cylindrical tube through the large hole when the fixed cleaning member is released.

Abstract: A machine and a method are described for washing and removal, in a continuous manner, of contaminants and labels from plastic containers made of recyclable material. During washing, the containers pass inside a washing chamber and are subject to a high level of friction caused by an agitator rotating at high speed. Tearing means are also provided to facilitate detachment of the contaminants from the surface of the containers.

Abstract: A device for removing a covering film layer off of a ticket comprises a cylindrical housing which includes a battery compartment, a motor powered by the batteries within the battery compartment, a crankshaft connected to the motor and a scrapper element in contact with the crankshaft which moves in response to the motion generated by the motor. The scrapper element includes a tip that, when in contact with the film later on the ticket, removes the film from the ticket. Preferably, the scrapper element motion is from side to side. Preferably, the tip is a blade cut at a 47 degree angle with the scrapper element.

Abstract: The machine is made up of an upper scraping device R (FIG. 7) and a lower contrast and drawing device T (FIG. 7), both independent even in motorization, and connected to each other by respective side frames FI and FS (FIG. 7) through a contrast screw and spring system 2,8 (FIG. 1); wherein both the scraping device and the contrast and drawing device are simultaneously operated, wherein when the ticket passes between them, the simultaneous interaction of the two devices R and T clean the ticket 20 of its removable paint.

Abstract: A quick cable deicing device and a power component thereof are provided. The deicing device comprises a cable clamping pedestal (11,13) which is sleeved on a cable and is capable of moving along the cable, a deicing head (21, 22) mounted at the head part of the cable clamping pedestal, and a power component which is connected with the tail part of the cable clamping pedestal and is capable of generating a thrust. The deicing device can advance and rotate at the same time under the drive of the power component. The power component comprises a gas tank (31) in a structure which conforms to a Laval nozzle principle and has an aperture expanded after sharply narrowed.

Abstract: A vehicle roof cleaner is provided with a pair of vertical supports, an upper cross bar, a cleaner assembly, and an adjustment mechanism. The upper crossbar connects the pair of vertical supports, and the cleaner assembly is movable along the pair of vertical supports and positionable below the upper crossbar by the height adjustment mechanism. The height adjustment mechanism includes a load bearing mechanism, a spring load assembly, and an activation mechanism.