Abstract: An apparatus for deflashing work pieces includes a pivotable treatment chamber, a throwing wheel which propels particulate media to impact work pieces in the treatment chamber, and a cryogen supply introducing a flow of cryogen to embrittle work pieces in the treatment chamber. A recirculation system includes a separator in communication with the treatment chamber through a plenum chamber, a media hopper in communication with the separator, first and second withdrawal conduits, a supply conduit connecting the withdrawal conduits to the throwing wheel, and a blower connected to the withdrawal and supply conduits for moving gas therein. The first withdrawal conduit is connected to withdraw cryogen gas from the treatment chamber through the separator and the media hopper and pull media from the separator to the media hopper. The second withdrawal conduit is directly connected to the plenum chamber to withdraw gas therefrom.

Abstract: A granule dishwashing apparatus with easily removable granule collectors and method of use. The dishwashing apparatus consists primarily of a treatment chamber, a tank, one or more granule collectors and one or more pumping devices. Soiled articles are placed in the treatment chamber to be washed with a mixture consisting of liquid and granules that is sprayed at the articles under high pressure. The mixture falls toward the tank after impacting the articles, passing through the granule collector(s). A liquid only portion is separated from the mixture at some point using the granule collector(s) so that the articles can be rinsed. At any point following a cleaning cycle, the granule collector(s) can be removed to add more granules and to simplify the cleaning of the apparatus. In a multiple collector system, the granule collectors are connected to actuators so that the collectors can be placed in a release mode or a collect mode depending on the function desired.

Abstract: A filter apparatus provided in a fluid pipeline for conveying a treatment fluid. A regenerating pipeline is provided adjacently to the fluid pipeline to convey a regenerating liquid. At least two filter units are switched between the fluid pipeline and the regenerating pipeline by a switching valve device. The filter apparatus enables a filter replacing operation to be carried out smoothly and reliably and is also capable of reliably trapping solid particles contained in the fluid, e.g. an abrasive liquid, continuously without the need of a filter replacing operation, thereby allowing supply of a fluid of high quality and a stable operation free from clogging.

Abstract: A process for reclaiming a suspension which is produced during the machining of semiconductor material and which contains a liquid, a substance with an abrasive action and abraded semiconductor material, includes separating off the substance with an abrasive action and then separating the liquid and the abraded material. In the process, the liquid and the abraded material are separated with the aid of a magnetic separator.

Abstract: A cleaning and restoration system 10 for floors 11 and other hard surfaces is disclosed. The system 10 has an cleaning head 12 which can be moved across a floor 11 or other hard surface. The cleaning head 12 impinges particulate media upon the floor 11 to remove soils and provide a slip-resistant surface. The media is entrained into the air by a pressure tank 17 which includes a classifier 18 for reclaiming a portion of the media for reuse. The pressure tank 17 has a series of dispersion bars 68 for separating the heavy particles to be re-used. The dust, soils, and other undesirable materials are filtered in a dust collector 57 having a cyclonic filter 71. A compressor 20, a vacuum/blower 22, and other components of the system are mounted on a truck 19. A method for utilizing the restoration system 10 is also disclosed.

Abstract: Systems for abrasive action include machinery for creating a vacuum and positive pressure to enable flow control while providing adequate vacuum to both retrieve and capture the spent abrasive material and the abraded material. A first embodiment includes a vacuum and boost operation facilitated by the use of a foot control for high control of abrasion, cleaning and polishing. A second embodiment is for use with human tissue and includes a vacuum only system with filtered air. A third embodiment includes vacuum with automatic boost for skilled medical personnel use and uses a minimum vacuum level to trigger a pre-set boost operation. The system utilizes air filtration, ultra violet, heat oven sterilization and secure waste storage. A manual contact tool is used closely with the area to be abraded supplanting any other control other than the pressing of the manual contact tool against the surface to be abraded, to create sufficient vacuum to trigger boost operation.

Abstract: In a blasting device, the blasting agent is thrown against the wall to be cleaned. The blasting agent and the dirt removed from the wall are collected in the bottom of the blasting unit in a collection chamber and conveyed by a conveyor to a separation chamber. An extraction device fitted on a suction connection creates air circulation in the blasting device, such that air circulation, the dirt and the blasting agent are separated. The air is supplied through an air supply opening which is placed between the inner seal and the outer seal around the blast opening.

Abstract: Systems for abrasive action include machinery for creating a vacuum and positive pressure to enable flow control while providing adequate vacuum to both retrieve and capture the spent abrasive material and the abraded material. A first embodiment includes a vacuum and boost operation facilitated by the use of a foot control for high control of abrasion, cleaning and polishing. A second embodiment is for use with human tissue and includes a vacuum only system with filtered air. A third embodiment includes vacuum with automatic boost for skilled medical personnel use and uses a minimum vacuum level to trigger a pre-set boost operation. The system utilizes air filtration, ultra violet, heat oven sterilization and secure waste storage. A manual contact tool is used closely with the area to be abraded supplanting any other control other than the pressing of the manual contact tool against the surface to be abraded, to create sufficient vacuum to trigger boost operation.

Abstract: A preferred embodiment of a workpiece finishing system impinges a grit and fluid slurry onto a workpiece and then recycles the slurry for subsequent reuse. In another aspect of the present invention, a recovery tank is used for generally settling and concentrating the grit in the slurry, and for separating out a portion of the fluid from the grit. A further aspect of the present invention provides a venturi-type nozzle for expelling the grit and fluid onto a workpiece, wherein the nozzle has a selectively movable inlet thereby varying the slurry concentration properties of the nozzle.

Abstract: A first pump collects used slurry which is employed for a CMP technique. A new slurry supply device supplies new slurry having a concentration higher than a concentration of the used slurry, to the used slurry. A sensor measures a concentration of recycled slurry produced by mixing the used slurry with the new slurry. The new slurry supply device stops supplying the new slurry, in a case where the concentration which the sensor measures is equal to or above a predetermined value. A second pump supplies recycled slurry onto a polishing stage, after the used slurry is completely recycled.

Abstract: An apparatus for removing surface coverings comprises a feeder device capable of providing a supply of dry ice pieces, a pellet-size reducer operatively associated with the feeder device to receive dry ice pieces from said feeder device and reduce the size of the dry ice pieces to nominal diameters less than 1 mm, and a blast gun connected to the pellet-size reducer and adapted for operative communication with an associated supply of flowing gas. The blast gun incorporates a venturi to entrain the reduced-sized dry ice pieces into the flowing gas and directs the flowing gas and dry ice pieces to an associated surface covering to be removed. Preferably, the pellet-size reducer is a knife- or disc-type grinding mill. In one embodiment, the grinding mill is adjustable for controlling the size of the dry ice particles supplied to the blast gun. The apparatus preferably includes a humidity controller to suppress static charges caused by the interaction of the dry ice particles with the surface being blasted.

Abstract: A magnetic filtration system for separating radioactive cut material from a fluid stream containing a mixture of the radioactive cut material and an abrasive cutting material. The system comprises a magnetic filter in fluid communication with the fluid stream. By selecting an abrasive cutting material having a different magnetic susceptibility than the radioactive material being cut, the abrasive cutting material can be separated from the radioactive cut material with the magnetic filter. The amount of high level radioactive material is thereby reduced for handling and disposal. The magnetic filter is part of a closed-loop system that extracts a fluid stream containing a mixture of abrasive cutting material and radioactive cut material from an enclosure in which an abrasive waterjet cutting tool is operated. Other filters are provided in the system for removing the radioactive cut particulate from the fluid stream in multiple stages according to a size of the particulate.

Abstract: An apparatus for the introduction of a blasting media into a high velocity, high pressure fluid stream. In one embodiment of the present invention a dual chambered pressure vessel has a pair of auxiliary actuated pop-up valves that are cycled at a high rate to provide continuous delivery of the blasting media to the work surface. The pressure vessel having a blasting media flow control valve coupled with the pressure vessel for controlling the flow of blasting media into the vessel.

Abstract: A slurry recycle process for use in free-abrasive machining operations such as for wire saws used in wafer slicing of ingots, where the used slurry is separated into kerf-rich and abrasive-rich components, and the abrasive-rich component is reconstituted into a makeup slurry. During the process, the average particle size of the makeup slurry is controlled by monitoring the condition of the kerf and abrasive components and making necessary adjustments to the separating force and dwell time of the separator apparatus. Related pre-separator and post separator treatments, and feedback of one or the other separator slurry output components for mixing with incoming used slurry and recirculation through the separator, provide further effectiveness and additional control points in the process.

Abstract: A processing apparatus for efficiently discharging both polishing liquid flowing out a surface plate and mist of polishing liquid produced through polishing with the use of simple measures, is composed of a drain receiver which is provided in proximity with the outer periphery of the surface plate, and which serves as both recovery means for recovering the polishing liquid flowing out from the surface plate and a suction means for sucking up the mist of polishing liquid produced through polishing, a common discharge pipe connecting the drain receiver to a gas-liquid separating mans, for simultaneously transferring both polishing liquid and mist of polishing liquid into the gas-liquid separating means therefrom, and a suction pump and a liquid processing means connected to the gas-liquid separating means.

Abstract: A media assist and gaseous fluid flow distribution system for a cryogenic deflashing machine. Dry-nitrogen or other dry gas is supplied to the media assist distribution system of the present invention in order to supply a cryogenic deflashing machine with gas fluid flow. The gaseous nitrogen is distributed into the interior of the cryogenic deflashing chamber as well as serving to propel deflashing media shot into a throw wheel impeller. The throw wheel impeller then propels the media into the cryogenic deflashing chamber to deflash plastic, metal, or other appropriate work pieces. The gas distribution portion of the present invention also supplies a blast of dry nitrogen against the door to ensure that debris collecting nearby is directed towards the drain of the cryogenic deflashing chamber and the media/flash separator. Via the gaseous distribution system of the present invention, the amount of media required for impact deflashing is greatly reduced.

Abstract: A method for removing a coating on a surface by applying a treatment composition layer to the coating to be removed. The treatment composition layer is made up of (Is) a first material selected from the compounds of sodium and potassium silicates, sodium and potassium phosphate, calcium silicate, iron and aluminum sulfates. An abrasive is injected against the coating to be removed so that the treatment composition layer and coat to be removed are removed and any hazardous material in the layer to be removed is contained.

Abstract: A polishing agent recovery and reuse method and device for the same removes large impurities by a filtration device, concentrates by an ultrafiltration device, and continuously recovers polishing agent. Polishing agent used in polishing a semiconductor board or a coating formed on top of a semiconductor board is collected in a pre-processing container after use. Large impurities are removed by a dual fine filtration device. The resulting filtrate is concentrated by an ultrafiltration device. The concentrated solution may then be mixed with filtrate from the dual fine filtration device to further concentrate the polishing agent. The concentration of the polishing agent in the concentrated solution, the pH, and the temperature of the solution are continuously monitored and controlled. The filtrate of the ultrafiltration device is further treated to remove impurities, resulting in pure or ultrapure water. The recovered polishing agent may be reused in further polishing steps.

Abstract: A grit tank (1), the inside of which is partitioned into an upper chamber (2), intermediate chamber and lower chamber (5), the intermediate chamber being partitioned into a left intermediate chamber (3) and a right intermediate chamber (4), is connected to a transport pipe (16) via a discharge port (9) of the lower chamber (5). The intermediate chambers (3, 4) are respectively communicated with the upper chamber (2) and the lower chamber (5) via a left upper communicating port (6) and a right upper communicating port (10) and also via a left lower communicating port (8) and a right lower communicating port (12). The communicating ports are respectively provided with a left filling valve (7), right filling valve (11) and changeover type feed valve (13).

Abstract: A deflector device is provided for a liquid-jet cutter wherein the cutting element is mounted upon an assembly which moves the cutting element between cutting and idle positions. A deflector disk is located on the lower end of this support assembly as maintained in a stationary position immediately below the idle position. During operation, the cutting element is moved to a cutting position immediately adjacent the product support surface which provides products to be cut to the cutter. When it is desirable to halt cutting, the cutting element is moved to a position remote from the product support surface and above the deflector disk. The assembly utilized to control movement of the cutting element positions the cutter at a remote distance from the deflector disk when in an idle state to minimize wear upon the components.

Abstract: A slurry distribution system for distributing slurry to a polishing machine that polishes a semiconductor wafer is disclosed. The slurry distribution system includes a storage tank for storing the slurry, a mixing device for mixing the slurry in the storage tank, a distribution loop with an inlet and outlet in fluid communication with the storage tank, a valve in fluid communication with the distribution loop for dispensing the slurry to the polishing machine, and a pump for circulating the slurry from the storage tank through the distribution loop and into the storage tank regardless of whether the slurry is dispensed to the polishing machine. In this manner, the slurry is agitated and efficiently used during polishing and during intervals between polishing.

Abstract: A blasting apparatus has two more pressure tanks (1)(11), and a switching member (20) for selecting one pressure tank from which particles are to be fed to the ejection portion from the at least two pressure tanks, which enables to carry out a continuous blasting operation. The blasting apparatus has a particle supply valve (200) which uses a sliding member (207) and a piston (208) instead of a rubber partition wall, thereby preventing particles and compressed air from being leaked. Further, in a particle separator (300) provided in the blasting apparatus, there is provided a separator container into which reusable particle and particle dust obtained after a blasting operation are blown and then diffused by a diffusion member (310), thereby enabling to separate particle dust and reusable particles with a high separation accuracy.

Abstract: A blasting apparatus has two more pressure tanks (1)(11), and a switching member (20) for selecting one pressure tank from which particles are to be fed to the ejection portion from the at least two pressure tanks, which enables to carry out a continuous blasting operation. The blasting apparatus has a particle supply valve (200) which uses a sliding member (207) and a piston (208) instead of a rubber partition wall, thereby preventing particles and compressed air from being leaked. Further, in a particle separator (300) provided in the blasting apparatus, there is provided a separator container into which reusable particle and particle dust obtained after a blasting operation are blown and then diffused by a diffusion member (310), thereby enabling to separate particle dust and reusable particles with a high separation accuracy.

Abstract: An enclosed abrasive blasting apparatus for a ship hull or other working surface comprises a movable and adjustable boom and an enclosed operator containment mounted on the end of the boom. The containment has a top, sides, back, bottom, and an adjustable angle open front with a peripheral gum rubber seal that is placed against the working surface. The outlet nozzle for the abrasive blasting system is positioned within the containment where the operator directs the abrasive stream against the working surface. A waste collection system creates a negative pressure in the containment that seals the containment against the working surface, while at the same time directing an airflow stream from an inlet in the top of the containment downwardly across the working surface, entraining waste particles proximate to the working surface into the airflow stream, and further directs the waste particles to a sealed collection container below the enclosure.

Abstract: A working fluid containing dispersed abrasive grains is used in abrasive machining, and a used working fluid contaminated with cutting chips or swarf produced during the abrasive machining is processed by first filter device, so that the abrasive grains in the used working fluid is recovered in the form of a suspension to provide a reclaimed working fluid in which the amount of the cutting chips is reduced. The used working fluid is reclaimed by the device, and the useful abrasive grains included in the used working fluid can be efficiently utilized without being discarded, whereby the abrasive grains in the working fluid is effectively utilized and the working cost is reduced. The device employs a so-called cross flow filtration system, wherein filtration films have mesh openings which are sufficiently smaller than an average grain size of the abrasive grains.

Abstract: A cleaning and restoration system 10 for floors 11 and other hard surfaces is disclosed. The system 10 has an cleaning head 12 which can be moved across a floor 11 or other hard surface. The cleaning head 12 impinges particulate media upon the floor 11 to remove soils and provide a slip-resistant surface. The media is entrained into the air by a pressure tank 18. The media is reclaimed in a classifier 17; and the dust, soils, and other undesirable materials are filtered in a dust collector 57. A compressor 20 and a vacuum blower 22, and other components of the system are mounted on a truck 19. A method for utilizing the restoration system 10 is also disclosed.

Abstract: A method of using a recyclable abrasive blasting system for blasting abrasive against a surface to be cleaned and for recovering such abrasive, comprising a storage hopper for containing abrasive, blast pots which receive abrasive and deliver it to a blasting hose, an autodump tank including an inlet for receiving particles resulting from blasting, such particles comprising trash, debris, dust and abrasive, a screen for separating trash and debris from the particles, an airwash for separating dust from said particles, and values for metering the amount of particles traveling there-through, a classifier includes a first auger and a plurality of augers formed by screens having spiral members thereon, the plurality of augers surrounding the first auger and in rotating cooperation therewith, whereby the screens classify debris from abrasive such that it may be routed outside of the classifier, whereby an airwash takes place and wherein any remaining particles travel to a particle separator having accumulating pla

Abstract: A self-contained mobile painting and maintenance platform for recovery of steel grit blast media used in the pressurized cleaning of bridge structures prior to repainting. The painting and maintenance platform is positioned on vehicle with deck extensions that expand to form a large barrier free support and recovery surface and collection troughs to recover spent grit and shot via gravity collection chutes.

Abstract: A method for removing a coating on a surface by applying a treatment layer to the coating to be removed. The treatment layer is made up of (i) a first material selected from the compounds of sodium and potassium silicates, sodium and potassium phosphate, calcium silicate, iron and aluminum sulfates and (ii) an alkali metal salt. An abrasive is injected against the coating to be removed so that the treatment layer and coat to be removed are removed and any hazardous material in the layer to be removed is contained.

Abstract: A dishwasher comprises a dishwashing tank (1) with a compartment (10) for receiving articles to be washed (2), and a magazine (3,4) provided below this compartment for receiving washing liquid and blasting agent. The washing liquid and the blasting agent have different densities. Between the magazine and the compartment extends a conduit (5, 9, 11) in which a pump (6) is connected for delivering washing liquid and blasting agent under elevated pressure to a nozzle arrangement (8) mounted at the conduit end disposed in the compartment receiving the articles to be washed. Washing liquid and blasting agent discharged from the nozzle arrangement impinge upon the articles to be washed, to subsequently drop into the magazine via an outlet (13) from the compartment.

Abstract: A self-contained mobile painting and maintenance platform for recovery of steel grit blast media used in the pressurized cleaning of bridge structures prior to repainting. The painting and maintenance platform is positioned on vehicle with deck extensions that expand to form a large barrier free support and recovery surface and collection troughs to recover spent grit and shot via independent auger systems within the troughs.

Abstract: A method and apparatus for shot blast cleaning a workpiece. The method comprising the steps of applying a composite stream of a slurry consisting of carrier liquid and particulate abrasive material under high velocity to the workpiece in a blast cabinet, reclaiming spent slurry after undersized abrasive material have been removed, cleaning the carrier liquid for reuse and pumping the cleaned carrier liquid at the workpiece for washing and conditioning the workpiece or pumping the cleaned carrier liquid together with the reclaimed abrasive material as a composite stream at the workpiece. A nozzle which has a divider within it for separating the abrasive material and carrier liquid is used in combination with a slurry discharge head to discharge the abrasive material and carrier liquid in a substantially overlapping blast pattern.

Abstract: A blast media for use in wet blasting to clean contaminants from a substrate surface comprises abrasive particles, at least one surfactant and a defoaming agent so as to reduce the amount of foam which is produced during the wet blasting process.

Abstract: A cleaning machine for treating goods with liquid only or with liquid mixed with granules which are heavier than the liquid, comprises a treating chamber (2), a pump device (3, 4) for circulating the liquid with or without granules and discharge thereof through nozzles (8) towards the goods in the treating chamber (2), and a collecting container (1) located beneath the treating chamber (2) and having a space (9) for liquid and granules, which space (9) communicates with said treating chamber (2).

Abstract: A method and apparatus for decontaminating structures which utilizes abrasive blasting in conjunction with a reverse air flow to remove contaminants from a structure. The apparatus comprises an abrasive blasting device for projecting abrasive material through a nozzle onto a structure at a high velocity. An enclosure is connected to the blasting device which surrounds the nozzle and forms a vacuum envelope around the nozzle and a portion of the structure being decontaminated. A vacuum apparatus is connected to the enclosure for providing a reverse air flow from the enclosure to a collection chamber in the vacuum. A high pressure pump/motor assembly delivers abrasion material at high pressure from a hopper to the blasting device. As contaminants are abraded from the structure, the reverse air flow provided to the enclosure causes the abrasive material and the material abraded from the structure to be collected in the collection chamber.

Abstract: A vacuum blasting machine with a sealed waste transfer system has a collapsible sleeve that provides a containment interface between the waste chamber and the waste collection drum. The periphery of one end of the sleeve is secured around the periphery of the opening in the waste collection drum. In the transfer operation, the other end of the sleeve is pulled over the dump housing, providing an impervious containment barrier between the dump housing and the interior of the collection drum. The drum has a vent opening with a bushing to which a vent line is attached. A vent line connects the collection drum to the interior of the waste chamber via a valve.

Abstract: In a honing system for producing a light-scattering surface on a photoreceptor substrate for use in xerographic printers, a constant concentration maintenance device is employed to drain an appropriate amount of liquid from a honing slurry to match the amount of liquid added during rinsing of the photoreceptor substrate. The constant concentration maintenance device is mechanically effected by vibrations in the mixing apparatus of the honing system, facilitating separation of the liquid an solid parts of the slurry. Delay between honing and rinsing is eliminated through use of the same honing booth for both operations.

Abstract: The invention provides a process for recovering abrasive grains from vitreous bonded materials by boiling the material in an aqueous solution of an alkali metal base.

Abstract: The present invention relates to an abrasive blasting device characterized in that to the first longitudinal inlet end of the injection abrading diffuser 1 there is associated a socket 2 and to the second longitudinal inlet end of the diffuser there is associated a conduit 3. The free end of the conduit 3 is closed by a cage-like collector 4, the mantle wall thereof diverging in the direction towards the diffuser 1. In the area of connection with said bottom of the collector 4 the conduit 3 is formed with a set of radial recesses 5, the interiors of the socket 2 and the conduit 3 being mutually interconnected by means of a connection-injection pipe 6. The latter projects into the conduit 3 essentially through said bottom of the collector 4. On the outer surface of the wall of the socket 2 and in the area of its free end there is diametrally opposed arranged a pair of ribs 10 bearing a guide wheel unit 10' in each case.

Abstract: A self-contained mobile painting and maintenance platform for recovery of steel grit blast media used in the pressurized cleaning of bridge structures prior to repainting. The painting and maintenance platform is positioned on vehicle with deck extensions that expand to form a large barrier free support and recovery surface and collection troughs to recover spent grit and shot via independent auger systems within the troughs.

Abstract: An abrasive blasting apparatus is provided which comprises a blast nozzle arranged in a blast chamber for blasting, toward a workpiece, two different kinds of abrasive particles separately supplied from a first abrasive container and a second abrasive container. The abrasive particles falling to the bottom of the blast chamber are collected by an abrasive collector, and the collected abrasive particles are separated by an abrasive separating system into those of the first abrasive material and those of the second abrasive material. The two different portions of the abrasive particles are returned separately to the first and second abrasive containers through feedback conduits.

Abstract: An abrasive blast cabinet includes a housing defining a blast chamber, a blast nozzle disposed in the blast chamber and connected to a source of an abrasive blast media for directing a flow of the blast media against a surface of an article to be cleaned, an elongated chute supported in the interior of the housing and having a first open end in fluid communication with a gas supply, a rotatable second open end in the vicinity of a work place for the article and an opening placed adjacent a window in the housing so that an operator located outside the blast chamber can direct his or her line of sight through the window and second rotatable open end and observe the article in the work place.

Abstract: A vacuum blasting machine with a sealed waste transfer system has a collapsible sleeve that provides a containment interface between the waste chamber and the waste collection drum. The periphery of one end of the sleeve is secured around the periphery of the opening in the waste collection drum. In the transfer operation, the other end of the sleeve is pulled over the dump housing, providing an impervious containment barrier between the dump housing and the interior of the collection drum. The drum has a vent opening with a bushing to which a vent line is attached. A vent line connects the collection drum to the interior of the waste chamber via a valve.

Abstract: A method and system for removing a surface layer contaminated with radioactive and/or hazardous material and subsequently treating the waste to remove contaminants and provide an essentially contaminant-free final effluent. The contaminated material is removed by blasting the surface with a pressurized stream of air and sodium bicarbonate abrasive media, and the media is dissolved in water subsequent to the blasing operation. The resulting waste is treated in a sequence of steps including adjustment of pH, aeration and separation into primarily solid and liquid phases by precipitation of solids, which are removed for appropriate disposal. The primarily liquid phase is successively passed through a particle filter, a granulated activated carbon filter and a polishing unit to produce the clean final effluent.

Abstract: A recovery system (10) is disclosed for recovering a treating material (12) for treating a surface (20) with a vacuum source (25). The treating material (12) may be a cleaning material such as sand, water or may be a coating material such as a paint or a plasma coating. The apparatus (10) ,comprises a housing (16) having a housing opening (18) for projecting the treating material (12) from a nozzle (14) through the housing opening (18) onto the surface (20). A fluid seal means (30) provides a seal between the housing (16) and the surface (20). The vacuum source (25) is connected to the housing (16) for withdrawing the treating non-adhering material (12A) from the housing (16).

Abstract: A series of large bins which can be raised and lowered on lifts in order to reach a bridge that is to be sand blasted. A skirt is attached to the upper outside edges of the bins. This skirt is raised and attached to the bridge so that the entire work area is completely enclosed. An air inlet and an air outlet are provided at either end of the enclosed work area. Air is pumped in to the work space through the inlet and is evacuated through the outlet. The outlet pressure is maintained at a higher level than that of the inlet in order to maintain a negative air pressure inside the work area relative to the outside air pressure. A grate covers each bin, providing an area on which workers can stand. As the bridge is sand blasted, all paint debris and blasting sand falls through the grates and into the bins. Smaller particles of dust are removed from the work area through the air outlet and are collected by a dust filter.

Abstract: A recyclable abrasive blasting system for blasting abrasive against a surface to be cleaned and for recovering such abrasive which has been blasted, comprising a storage hopper for containing abrasive, blast pots which receive abrasive and deliver it to a blasting hose wherein abrasive is propelled against a surface, an autodump tank including an inlet for receiving particles resulting from blasting, such particles comprising trash, debris, dust and abrasive, a screen for separating trash and debris from the particles, an airwash for separating dust from said particles, and valves for metering the amount of particles traveling therethrough, a classifier includes a first auger and a plurality of augers formed by screens having spiral members thereon, the plurality of augers surrounding the first auger and in rotating cooperation therewith, whereby the screens classify debris from abrasive such that it may be routed outside of the classifier, whereby an airwash takes place and wherein any remaining particles tr

Abstract: A dishwasher for washing with granules heavier than liquid, comprises a washing chamber (1), a device (7) for spraying washing liquid with or without granules against dishes in the washing chamber, a tank (10) which is connected to an outlet (11) from the washing chamber, and a circulation pump (5), the suction side of which is joined to an outlet (4) from the tank, and the pressure side of which is joined to a manifold (6) for conducting liquid sucked in from the tank, with or without granules, to the spray device (7). According to the invention, the dishwasher comprises a dividing wall (8), defining an upwardly open tank chamber (12) in the tank. The upper edge of the wall is disposed beneath the upper limit of the tank. Furthermore, the outlet opening (11) of the washing chamber is disposed above the tank chamber (12) defined by the dividing wall.

Abstract: An improved hopper and conveyance tube combination which is resistant to clogging and more easily loaded. Material is delivered from the hopper and into the conveyance tube through an inlet opening in the side of the conveyance tube. Because the inlet opening is in the side of the conveyance tube, the tube can not become completely clogged. Air or conveying fluid is always able to move through the conveyance tube and eventually conveys all of the materials to the desired destination. A ramp connected to the rim of the hopper permits materials on the floor to be easily swept up the ramp and into the hopper.

Abstract: In a machining device for machining precision, in particular dental, workpieces in a machining chamber surrounded by a housing, having an inspection window with two gripping holes arranged to the two sides of the inspection window, the machining chamber is preferably connected or connectable to a suction device and arranged in the machining chamber is at least one blasting nozzle for blasting and/or a demolding tool for demolding and/or an air nozzle for blowing off the workpiece.