Abstract: A vehicle wash system having a series of spray assemblies for use in cleaning vehicles such as a highway salt truck. As the vehicle is driven through the vehicle wash system, sensors alert the control system as to the location of the vehicle. While using a single pump, the control system then activates and deactivates valves to selectively open and close high pressure flow paths to various spray assemblies as the vehicle moves through the vehicle wash system. The nozzles in the spray assemblies receive full pressure water when the corresponding valve is opened and are oriented to clean specific portions of the vehicle in a predetermined sequence.

Abstract: A substrate treating apparatus and a substrate treating method for treating a to-be-treated substrate such as a semiconductor wafer, in which chemical fluids can spread uniformly over the substrate without substantially decomposing and changing their compositions, so that production of mists or volatilization of the chemical fluids over the surface of the substrate can be restrained. A multi-nozzle structure, such as a double-nozzle structure, includes an outer tube nozzle, through which at least a chemical fluid or a combination of a chemical fluid and a gas is discharged onto a semiconductor wafer, and an inner tube nozzle, through which at least a chemical fluid or a combination of a chemical fluid and a gas can be discharged into the outer tube nozzle. The distal end of the outer tube nozzle has a top structure that extends parallel to the semiconductor wafer in a non-contact manner.

Abstract: Semiconductor wafers are cleaned using megasonic energy to agitate cleaning fluid applied to the wafer. A source of energy vibrates an elongated probe which transmits the acoustic energy into the fluid. The probe has a solid cleaning rod and a flared or stepped rear base. In one form, the probe is made of one piece, and in another, the rod fits into a socket in the base. This enables a rod to be made of material which is compatible with the cleaning solution, while the base may be of a different material. A heat transfer member acoustically coupled to the probe base and to a transducer conducts heat away from the transducer. A housing for the heat transfer member and the transducer supports those components and provides means for conducting coolant through the housing to control the temperature of the transducer. In another arrangement, an end of the housing is coupled between the transducer and the probe.

Abstract: Semiconductor wafers are cleaned using megasonic energy to agitate cleaning fluid applied to the wafer. A source of energy vibrates an elongated probe which transmits the acoustic energy into the fluid. The probe has a solid cleaning rod and a flared or stepped rear base. In one form, the probe is made of one piece, and in another, the rod fits into a socket in the base. This enables a rod to be made of material which is compatible with the cleaning solution, while the base may be of a different material. A heat transfer member acoustically coupled to the probe base and to a transducer conducts heat away from the transducer. A housing for the heat transfer member and the transducer supports those components and provides means for conducting coolant through the housing to control the temperature of the transducer. In another arrangement, an end of the housing is coupled between the transducer and the probe.

Abstract: An apparatus for cleaning golf clubs having an enclosure with a lower reservoir for holding water and an upper spray chamber in communication with said lower reservoir. The spray chamber houses a cleaning path for cleaning golf clubs. The cleaning path is defined by a plurality of opposingly spaced bristle brushes with a plurality of high pressure spray nozzles strategically located between the bristle brushes. A low volume/high pressure pump is utilized for providing highly pressurized fluid to the spray nozzles. Golf clubs are inserted along the cleaning path of the apparatus wherein all portions of the golf club are cleaned through the use of the bristle brushes and the high pressure spraying of fluid.

Abstract: The present invention provides a method and an apparatus for cleaning substrates. The cleaning chamber defines a processing cavity adapted to accommodate a substrate therein. In one embodiment, the cleaning chamber includes an upper plate, a lower plate and a gas manifold disposed there between. A substrate is disposed in the processing cavity without contacting other chamber components by a Bernoulli effect and/or by a fluid cushion above and/or below the substrate. Fluid is flowed into the processing cavity at an angle relative to a radial line of the substrate to induce rotation of the substrate during a cleaning and drying process. A cleaning process involves flowing one or more fluids onto a surface of the substrate during its rotation. One-sided and two-sided cleaning and drying is provided.

Abstract: A wet treatment apparatus includes a nozzle having an approximately rectangular introduction opening surface that is open toward a substrate to be treated and an approximately rectangular recovery opening surface that is open toward the substrate, these opening surfaces being flush with each other and disposed with the long side directions thereof in parallel with each other. A treatment liquid is introduced between the introduction opening surface and the surface to be treated of the substrate and is sucked and recovered from between the recovery opening surface and the surface to be treated of the substrate. The flow rate of the treatment liquid flowing from the introduction opening surface to the recovery opening surface through the surface to be treated of the substrate is controlled to 0.02 to 0.3 L/min per 1 cm in the long side direction of the introduction opening surface.

Abstract: Semiconductor wafers are cleaned using megasonic energy to agitate cleaning fluid applied to the wafer. A source of energy vibrates an elongated probe which transmits the acoustic energy into the fluid. The probe has a solid cleaning rod and a flared or stepped rear base. In one form, the probe is made of one piece, and in another, the rod fits into a socket in the base. This enables a rod to be made of material which is compatible with the cleaning solution, while the base may be of a different material. A heat transfer member acoustically coupled to the probe base and to a transducer conducts heat away from the transducer. A housing for the heat transfer member and the transducer supports those components and provides means for conducting coolant through the housing to control the temperature of the transducer. In another arrangement, an end of the housing is coupled between the transducer and the probe.

Abstract: A fluid delivery system (26) for an automated processor (A) delivers washing, microbial decontaminant, and rinse fluids to spray nozzles (102, 104, 106, 108, 110) in a chamber (12) for sequentially spraying the fluids over a lumened device (B), such as an endoscope. Sets of nozzles are operated in sequence to avoid the spray jets canceling each other out. The endoscope is supported on a rack (21) which is agitated by an activation system (330). This ensures ever changing points of contact between the device and the rack so that all external surfaces are contacted by the spray. A computer control system (80) controls cleaning, decontamination, rinsing, and drying stages of a cycle, and agitation of the rack at appropriate times, which are all carried out within the chamber, obviating the need for human contact with the device during processing.

Abstract: A system for abrasively cleaning small parts, and a container for holding small parts undergoing abrasive cleaning. An abrasive cleaning cabinet has a bottom member and a cover hingedly connected to the bottom member. The cover is pivotable between a closed position in which the cover is closed against the bottom member to define a cleaning chamber therewithin and an open position permitting access into the cleaning chamber. The cover has a viewing window and a pair of arm apertures through it, with a glove attached to each arm aperture and extending into the cleaning chamber to permit insertion of a person's hands through the arm apertures and into the gloves in the cleaning chamber.

Abstract: A method of and device for removing burrs from metal work-pieces processed by a metal processing machine is provided. The method and device both include the burrs being removed by a high pressure stream of liquid that exits a high pressure nozzle and is directed at the work-piece that is to have the burrs removed. An integration of the burr removal step into the manufacturing sequence of the parts on commercial metal processing machines is made possible by the fact that the high pressure stream of liquid that is used has a proportion of oil of greater than 50% and a high pressure of greater than 400 bar.

Abstract: A load station is used in a planarizing machine to perform several useful functions related to handling of a wafer. By centering the wafer with respect to a spindle carrier the load station interrupts the accumulation of positional errors. The load station never makes solid contact with the wafer, but instead the wafer is continually levitated on three cushions of water that are directed upwardly against the lower face of the wafer. The presence of the wafer partially impedes the flow of water from the nozzles used for levitation causing an increase in the water pressure immediately upstream of the nozzles. This increased pressure is sensed and used as an indicator of the presence of a wafer at the load station. The load station further includes a nozzle that directs a stream against the lower side of the wafer so as to elevate the wafer from the load station into the carrier.

Abstract: A plastic film or sheet, wherein upon immersing a test piece of the plastic film or sheet in ultrapure water, extracting pure water from near the surface of the test piece and evaluating the cleanliness of a resulting bag based on the concentration (number) of fine particles 0.3 .mu.m or greater in size dispersed in the extracted ultrapure water, the measured concentration is no greater than 5 per ml. The process comprises steps of immersing and running a plastic film or sheet (1) in ultrapure water (4) in a clean room (16), and further spraying and washing the film or sheet (1) with ultrapure water after the film or sheet (1) is drawn out, followed by drying, destaticization, cutting and heat sealing.

Abstract: An apparatus is provided to efficiently clean a mat or a screen. The screen or mat is placed on or within a frame and within an enclosure; large volumes of pressurized water and/or cleaning solvent are simultaneously directed towards one or more sides of the screen or mat. Temperature sensors in combination with a heating element and ph detectors are controlled by a pre-programmed system controller to insure that the temperature of the water is maintained within a specified range and that the water recycled within the apparatus is within an acceptable limit of contamination. A preferred design of the apparatus includes a mobile frame that is moved to the initial location of the mat and then returned to the enclosure while bearing the mat. The mobile frame reduces a risk of injury to cleaning personnel. A truck may be configured to carry one or more apparatus from site to site to allow customer based site cleaning opportunities.

Abstract: A method and an apparatus apply a substance, especially a developer, to a surface through jets. Each jet carries the substance to be applied to a predetermined portion of the surface, and each jet essentially applies a predetermined quantity of substance per unit of surface area, wherein at least one jet applies a maximum quantity of substance per unit of surface area to the surface. The quantity of substance per unit of surface area applied by each jet is selected in such a way that it is greater than 1% of the maximum quantity of substance per unit of surface area.

Abstract: A method and device for cleaning contaminated surfaces with both water and steam. A water film is applied to the contaminated surface and steam sprayed into the water film while water is continued to be applied to the water film. In this way the steam is directed into the water film and through the water film onto the contaminated surface, whereby contaminates in the contaminated surface are removed.

Abstract: A carrier tape suitable for facilitating in-line washing of components for use in pick-and-place operations. The components are loaded into their respective pockets after emerging from one or more forming machines, with the components having lubricant remaining thereon, and are placed into respective pockets of the carrier tape with lubricant remaining on the components. The carrier tape has a plurality of pockets for receiving respective components, with the pockets having washing openings through which cleaning fluid is imparted to the components and allowed to drain from the pockets as the pockets are passed through washing and drying stations. After being washed and dried, a cover strip is detachably adhered to the carrier tape to maintain the components in their respective pockets.

Abstract: The present invention relates to a wafer cleaning machine having an input station, a water track, a cleaning station, a rinsing station, a spin-dry station, and a load station. The input station includes two or more wafer supply areas for a continuous supply of wafers to the water track. After the wafers enter the water track from the input station, the wafers are transported down the track into the wafer cleaning station. The wafer cleaning station comprises a plurality of pairs of rollers which pull the wafers through the cleaning station and thereby clean the top and bottom flat surfaces of the wafers. A one-piece cleaning fluid manifold formed within the upper panel of the cleaning station facilitates effective distribution of the cleaning fluid to the rollers. From the cleaning station, the wafers are transported to a rinse station. From the rinsing station, the workpieces are transferred to a dual spin-dry station.

Abstract: The invention relates to a process and a device for removing shrinking casings or encircling labels from containers, particularly bottles, glasses, cans, or the like, in which, first of all, a separating line which proceeds essentially transversely to the direction of circumference is produced and the shrinking casing or the encircling label is then removed by means of a fluid stream which is directed against the container. During the removal of an encircling label or of a shrinking casing which has been cut through, the containers are preferably held, in a bottom-free manner, near the area of the head, and at least one fluid stream is directed, in an angular manner, from above, essentially axially to the wall of the container, against the container, and preferably above the upper edge of the shrinking casing or of the encircling label.

Abstract: This invention is directed to a substrate treating apparatus in which a treatment is performed upon a top surface and a bottom surface of a substrate to be carried on a substrate carrying plane inclined at a certain angle to a horizontal plane in a direction normal to a substrate carrying direction. The substrate treating apparatus includes a guide plate provided below a substrate carrying plane along which a bottom surface of the substrate is to be carried; and treating liquid supply means having a first treating liquid supply member for supplying a treating liquid to a clearance defined between the bottom surface of the substrate carrying plane and the guide plate.

Abstract: Method and apparatus for removing a label from a container which includes a cylindrical surface, by blowing air so as to be incident tangentially with respect to the cylindrical surface of the container and flow along the container surface toward a leading edge of the label as the container is rotated. An air knife having an air exit slit and a substantially planar surface disposed adjacent to and substantially perpendicular to the air exit slit utilizes the Coanda effect, such that air exiting from the air exit slit bends around and follows the substantially planar surface so as to flow tangentially to the cylindrical surface of the container and thereby remove the label as the container is rotated.

Abstract: A dishwasher for cleaning and sanitizing a commercial quantity of dishware. The dishware is conveyed into a wash chamber and simultaneously sprayed from above, below and from the side of the dishware using a sufficient amount of cleaning fluid such that a temperature of at least 155.degree. F. is maintained within the wash chamber of the dishwasher.

Abstract: A device for surface treating of parts which includes a base frame with an elongated channel thereon. The channel includes a first end wall at a first end of the channel and a second wall which defines a crosswise extending dam at a second end of the channel remote from the first end, the dam including an inclined ramp extending from the lowest part of a bottom wall to a top of the dam. A drive device is provided for vibrating the channel to cause parts to travel from the first end wall toward the dam whereby the parts rise to a sufficient level in advance of clearance of the dam. A fluid delivery device is provided for spraying a treatment solution toward either the bottom wall or the inclined ramp. A fluid outlet drain is provided for draining the treatment solution introduced into the channel by the fluid delivery device from the channel, the fluid outlet opening into the channel solely through the aforesaid first end wall.

Abstract: Apparatus for cooling a metal extrusion, such as an aluminum extrusion, may include a carriage which houses the cooling liquid delivery system and is relatively movable with respect to the extrusion press in order to provide the desired amount of air cooling prior to quenching. The quenching apparatus may have a plurality of generally parallel cooling liquid delivery tubes, each having a plurality of nozzles which are preferably independently adjustable as to volume and spray pattern. The cooling liquid delivery tubes may be axially rotated and flow of the cooling liquid within each tube may be independently adjusted. The housing of the quenching unit may have an upper portion which is rotatable generally upwardly and is provided with a transparent window to facilitate viewing of the spraying action. A method of quenching an aluminum extrusion employing such apparatus is provided.

Abstract: A wafer surface treatment apparatus and method used in the apparatus including a treatment tank with a cylindrical inside with a bottom, a circular recess formed in the bottom of the tank, a plurality of lower fluid holes opened in the recess, and a horizontally long opening provided at lower part of the side wall of the tank. A movable wall is tightly but slidably installed in the cylindrical inside of the tank so that the movable wall forms a closed room with the recess when it comes into contact with the bottom of the tank. Also, a plurality of upper fluid holes are provided so as to communicate with the closed room, and a rinsing water and washing liquid supply/discharge device is connected to the upper and lower fluid holes.

Abstract: A method and apparatus for cleaning filter media in dewatering apparatus in situ includes an applicator which sprays a mixture of water and a cleaning agent onto a filter media as the applicator and media undergo relative movement. The cleaning solution contains selected oxidizers and dispersants to break the polymer bond and remove polymeric residues from the media without the need for removing the media from the apparatus.

Abstract: A plurality of liquid jet nozzles are positioned in spaced apart relation to each other about a portion of the exterior surface of a pipe to be cleaned. High pressure liquid is supplied to the nozzles to cause liquid jets to be emitted, with the liquid jets being directed toward the exterior surface of the pipe. Each nozzle can be rotated about an axis which is at least substantially normal to the exterior surface of the pipe, while the nozzles are being moved longitudinally relative to the pipe. The liquid jets from the nozzles simultaneously impinge on the exterior surface of the pipe along prescribed paths located in an annular region extending around the circumferential extent of the pipe.

Abstract: A portable ground water sampling apparatus has a submersible pump or other water sampling apparatus attached through a hose to a hydraulically driven spool mounted on a boom attached to the bed of a truck or trailer. The hydraulically operated boom enables the operator to place the pump over the well and lower the pump into the well from the spool. A second spool also mounted on the boom operates a cable attached to a discrete liquid sampler or appliance of operator's choice for lowering into the well to take water samples or collect data. A decontamination apparatus is also attached to the boom and washes the hose and cable to remove contaminants therefrom. The contaminated wash fluid is removed to a holding tank for later disposal at a safe site. Hydraulically driven level-wind mechanisms are attached to each spool.

Abstract: A cleaning apparatus capable of substantially complete removal of contaminations generated during the manufacturing process of glass substrates, semiconductor wafers, magnetic disk substrates, magnetic head substrates or the like. The cleaning apparatus comprises a cleaning bath which is greater in cross section than the material to be cleaned and which has an opening portion for insertion of the material to be cleaned, and an ultrasonic transducer attached to the cleaning bath. The apparatus precludes various defects arising from contaminations, and enhances reliability and yield of the substrates manufactured.

Abstract: A parts washer for cleaning individual parts is disclosed having a compartmentalized washing enclosure housing individual washing and drying chamber which are separated by slideable partitions which open to admit parts, close to isolate parts during a particular washing operation, and open to release parts to a subsequent chamber. The partitions are operated in a predetermined sequence by pivoting arms which are acted on by positive motion cams mounted on a motor driven camshaft. The wash chambers have nozzles connected to a cleaning medium supply for directing cleaner such as hot water or steam onto the part to be cleaned in a predetermined pattern for optimized cleaning and, similarly, the drying chambers utilize nozzles connected to a source of dried, compressed air to dry the heated parts. A feed track moves the parts to be cleaned from the parts source, such as a manufacturing machine, to and through the parts washer.

Abstract: An apparatus and method is disclosed for transporting thin materials, such as printed circuit boards or films, in an etching or other chemical treatment operation whereby a series of guide members, such as wires, which move back and forth in a reciprocating manner, guide the articles being transported through the apparatus and facilitate generally uniform treatment coverage of the articles with a treatment fluid.

Abstract: A wafer processing apparatus including a head defining an etching chamber, the sidewall of the head being slidable along the base so that the sidewall and base will normally define an etch chamber; and the sidewall may be moved upwardly to open a discharge passage for rinsing water, and a deflecting surface for deflecting the rinsing water downwardly and draining the rinsing water from the passage. The housing is separable above the deflector ring to provide access to the wafer for inserting the wafer and replacing it.

Abstract: A method and apparatus for the aqueous cleaning of a printed circuit board having surface mounted components assembled thereon. The invention involves a heated aqueous solution sprayed under high pressure through a helically-vaned nozzle that is moving rotationally about the plane of a moving printed circuit board. The apparatus accomplishes a thorough cleaning of all components and areas of the printed circuit board with the use of a water based cleaning solution.

Abstract: A steam cooking device includes an endless conveyor arranged in a spiral path surrounding a cage. The cage is rotatable on a vertical axis to drive the endless conveyor, thus to move food along the helical path as it is cooked. A cleaning system for the device includes a fixed manifold of nozzles for spraying the conveyor, a whirling nozzle within the cage, and a spray bar. The spray bar moves along the helical path as the cage rotates, and carries a plurality of nozzles that spray a cleaning fluid onto the structure that supports the endless conveyor. Leading and trailing nozzles spray radially disposed cantilevered carrier rods, while pairs of nozzles, along the top of the moving bar, spray opposite sides of rails mounted on the carrier bars and supporting the conveyor. After the cleaning cycle, the spray bar is removed and the device is ready for food preparation.

Abstract: The present invention concerns a procuedure for washing off flux residues subsequent to soldering from a circuit board or equivalent component. The circuit board washing procedures of prior art have either been detrimental to the environment or poor in their washing result. These problems have in the present invention been solved by including at least one step in the procedure in which steam is sprayed on the circuit board or equivalent. The steam spraying step is advantageously combined with preceding water washing and rinsing steps. A circuit board or equivalent component rinsed with hot steam is recovered in a cleaner condition than before, and moreover, entirely dry.

Abstract: Improvements to an integrated circuit wafer rinsing and washing machine which include a streamlined housing for low turbulence air flow, improved rear maintenance capability, improved wafer carriers, foot operated switches and improved rotating part fastening means.

Abstract: A method and apparatus for disinfecting sand with an electrolysate of sea water, whose concentration of chlorine equivalent is 200-2000 mg/l before redepositing sifted sand back on to the beach.

Abstract: An apparatus is provided for removing excess fluid from an acticle. A spray nozzle is used to discharge a high pressure liquid stream across a predetermined area of a housing. An article including a top surface having an upwardly-turned outer edge forming a cavity which contains excess fluid is transported through the high pressure liquid stream. The high pressure liquid stream is directed at the top surface of the article to force the excess fluid from the cavity.

Abstract: A flitch washer for washing flitches with a high volume of low pressure washing liquid is described. The flitch washer comprises an inner cylinder defining a passageway for the flitches. The passageway has open entry and exit ends. A conveyor is provided for conveying flitches through the passageway. The inner walls of the passageway are provided with high capacity, low pressure nozzles for discharging the low pressure washing fluid into the passageway. An outer cylinder having an axis parallel to the axis of the first cylinder, and bulkheads closing the end spaces between the outer and inner cylinders defines a manifold in communication with the nozzles. A high volume pump supplies washing fluid to the nozzles.

Abstract: The invention deals with some improvements on chambers intended for setting concrete parts, as well as with the necessary complementary components to transfer the concrete parts from the production machine up to the chamber part outlet. One of the improvements consists of a certain mechanism, named transfer unit, which carries out the transportation of panels loaded with parts from the moulding machine up to a lifter responsible for raising and introducing those panels in the different floors of the chamber. Another improvement consists in providing the lifter with a counterweight stop and some moving arms to push the panels properly and prevent them from getting on top of each other, as well as to open the respective chamber gates. The chamber is a little bit inclined to facilitate the panel movement. Another improvement consists of a rolling path made up of a wheel-shaft-self-levelling bracket assembly as well as a spray watering system and an individual little roof per floor.

Abstract: The present invention provides an industrial washing machine in which articles or parts to be cleaned are supported in a basket rotated by a jet spray and cleaned by a cleaning spray, maintained at a desired pressure. The jet spray provides an overflow relief to avoid unacceptable increases in the cleaning spray pressure with the rotating basket being provided with a brake to substantially maintain a predetermined rotational speed of the basket.

Abstract: A device for performing controlled cleaning of paint rollers of a hollow tubular form, comprising a housing (6, 7) for containing fluid transport tubing and spray heads (3, 4) spray heads (4) for expelling high pressure spray, which is directed at the sides of said paint roller thereof producing a spinning action. Fluid transport tubing (3) is in fluid communication through the wall of lower housing (6) with gate valve and female coupling housing (2, 1) supplying fluid to spray heads (4). A funnel (5) functions for collection and downward channeling waste fluid, and is mounted circumferentially inside and just below the top rim of lower housing (6) with the spout portion pointing downward, allowing for convenient single stream drainage of waste fluid.

Abstract: A conveyor line system for carrying frozen comestibles in which the conveyor line support rail is formed of an elongated aluminum extrusion having incorporated within it a fluid passage extending along its length with radially and longitudinally spaced orifices for washing the conveyor line assembly during a cleaning cycle.

Abstract: A machine for cleaning a coupler consisting substantially of a male coupler element and a female coupler element, especially mating surfaces related parts thereof is proposed for avoiding fouling thereof in advance of practical coupling of both the elements. The machine is provided with a ring tube type cleaner unit suspended from a detachable top cover of a cleaning box. The inside space of the ring tube constitutes a liquid chamber supplied with cleaning water from a source and delivers from a number of nozzle openings formed through the inner wall of the ring tube, for delivery of sweep water jets in the center of the ring tube, where the tip and to-be-coupled ends of both the coupler elements are positioned at a small mutual distance. After cleaning jobs, either one of the male and female coupler elements is advanced to mating position for establishing a tight contact with the other one of the coupler elements for avoiding otherwise frequently encountered, disadvantageous fouling.

Abstract: An apparatus for rinsing extruded pasta product in a container to remove surface starch from the pasta. The apparatus includes a conveyor on which containers holding a portioned amount of extruded pasta product are conveyed upright in single file, a manifold for introducing hot rinse water into the containers, and a rotary draining unit in which the water-filled containers are first inverted to drain off the rinse water and are then returned to an upright position for transfer to additional processing operations such as sauce filling, container sealing, retorting and cooling. A stationary slide plate is provided between the conveyor and the rotary draining unit, and reciprocating arms are mounted adjacent the slide plate to move the water-filled containers from the conveyor across the slide plate and into the rotary draining unit. The rotary draining unit includes a pair of horizontally extending support surface mounted equidistant from and parallel to a central shaft around which the support surfaces rotate.

Abstract: This invention is described an automatic developing device. The automatic developing device according to this invention is comprising: a stage on which the substrate to be treated is disposed after application of the resist and the patterning step is complete; a sealed frame capable of movement, that is used to sealingly cover the substrate disposed on this stage; a supply pipe for supplying developer into this sealed frame; a treatment vessel in which installs the stage, the sealing frame and the developer supply pipe; and at least one nozzle which sprays rinsing liquid provider in this treatment vessel.

Abstract: A non-metallic turntable having a superstructure with means for holding wafer baskets or specimen holders during centrifugal treatment thereof is comprised of at least one flat annular ring member affixed by posts in a spaced-apart, parallel relationship to a base member which is mountable on a spinning mechanism in a centrifuge. An optional, but convenient, fluid distribution means is provided by passageways in the base member which communicate with hollow portions of the posts, which are equipped with means for spraying fluids therefrom.

Abstract: A device for cleaning paint rollers having a handle and roll utilizing housing for enclosing the roll. The roll is mounted in the housing permitting rotation of the roll in relation to roller handle. A nozzle directs paint cleaning fluid to the rotatably mounted roll in the housing for removal of the paint from the roll.

Abstract: A developer is drawn up from a developer tank (1) by a developer pump (5) and after the flow rate of the developer has been regulated by a developer flow rate control valve (12), the developer passes through a developer flow meter (14) and reaches a pipe (16). A rinse solution is drawn up from a rinse solution tank (2) by a rinse solution pump (6) and after the flow rate of the rinse solution has been regulated by a rinse flow rate control valve (13), the rinse solution attains the pipe (16) through a rinse solution flow meter (15). The developer and the rinse solution are mixed in the pipe (16) so that the mixture is sprayed from a nozzle (17) to a negative type photoresist (11) placed on a specimen table (10).

Abstract: A system for developing a photo-resist material of an optical recording medium on which digital information is recorded in the form of a series of pits whose position and length represent the digital information. In order to precisely control the size of the pits formed during the developing process, a diffraction beam of the monitoring energy beam passing through the pits is received by a sensor means which monitors the intensity of the diffraction beam and which produces a signal for controlling the supply of developing solution on the recording medium. A partition means is provided for isolating the path of the monitoring energy beam so as to eliminate absorption, diffraction or scattering effects due to the particles of developing solution sprayed on the surface of the recording medium.