Abstract: A combination bit for both drilling a pilot hole and cutting coke from a coking drum. A manually operable flow divider/diverter valve permits a single workman to quickly and easily change from pilot hold drilling mode to cutting mode without having to change bits.

Abstract: A skimmer-diverter assembly for use with swimming pools having water filtration and circulation systems. The skimmer-diverter assembly includes an elongated arm positioned adjacent the skimmer intake of the spool filtration and circulation system. A flow augmenting apparatus is used with the elongated arm to direct an augmented current flow along the arm to enhance the entrainment of debris and direct the debris toward the side wall of the pool and skimmer intake.

Abstract: The invention relates to a skimmer for swimming pools which includes a float having an opening for receiving debris on the surface of the pool, and a mesh rearwardly of the opening for catching the debris, the float being connected by a line to the pipe of an automatic suction cleaner near the suction cleaner for the float to be dragged behind the suction cleaner.

Abstract: A flexible cylindrical boot with a plastic reinforced opening containing multiple nylon rivets for connection to one or more nylon cords is mounted around the shaft of a small outboard motor. A telescopic handle attached to the reinforced opening guides the boot around the motor shaft after a garden hose is attached to a connector integral with a bottom of the boot. Fresh water from a faucet fills the boot and the motor is run in an idle condition to permit salt water flushing of the coolant system. The brackish water is then siphoned from the boot for dry storage of the motor in an upright position attached to the transom or lazarette of a boat.

Abstract: Cleaning process for removing material coated on the inner surface of an enclosed vessel. e.g., photographic emulsion, photopolymer, subbing layer, chemicals, etc., comprisingA. forming a substantially continuous high pressure stream of cleaning liquid, e.g., water, solvent,B. supplying the stream of liquid at a pressure, 4000 to 8000 psi to at least one fixed point in the vessel,C. dividing the stream into at least two opposed paths, andD. directing the liquid onto said surfaces in a 360.degree. solid angle using the fixed point as the angle vertex.The process is particularly useful in cleaning photographic emulsions but is also useful in removing other chemical materials and chemicals from an enclosed vessel.

Abstract: An essentially self-contained mobile tube cleaning machine which is remotely operable so that there is no need for operating personnel to be in close proximity to cleaning nozzles or other high pressure lines during tube cleaning operations. As a consequence, significantly higher water pressures and significantly higher water flow rates can be utilized thereby not only accelerating the rate of cleaning but also the efficiency and the effectiveness of the cleaning operation. Through the provision of a nozzle head at the end of an articulatable boom, it is possible to adjust the location of the nozzle through movement of the boom in order to clean the face of a tube bundle, the shell side of a tube bundle and the interior of the tubes themselves.

Abstract: A booth in which components are cleaned by high pressure water ejected from a nozzle assembly associated with a robot. The robot is adapted to move the nozzle assembly along multiple axes so as to enable the nozzle assembly to reach various areas of the components to be cleaned. The nozzle assembly and part of the robot are located in the booth but substantial portions of the robot are located outside of the booth in order to avoid the need for waterproofing those portions. To enable the robot to operate while located partially within and partially outside of the booth, one wall of the booth is formed by groups of slidable panels which expand and contract to accommodate the robot as the robot is moved. In one embodiment, the panels form the ceiling of the booth and, in a second embodiment, the panels define one upright side wall of the booth.

Abstract: A releasably retainable fresh water flushing adaptor for outboard and stern-drive marine propulsion systems having an external lower propulsion housing which includes at least one water intake port along or immediately adjacent either side of the upper forwardly bulbous portion of the lower housing. The flusing adaptor includes a molded cover which is mateably, releasably seal-retaining over this forwardly portion of the lower housing and also includes a fitting connected or connectable into the upper forwardly portion of the cover for releasable attachment to a supply of fresh water. The fitting has an internal passage in alignment and in fluid communication with the housing water intake port. At least one water distribution groove formed into the interior surface of the cover adjacent the fitting for providing water flow one both water intake port is also provided.

Abstract: An automatic swimming pool cleaning apparatus has a surface supply hose connected to a floating unit and a further underwater hose that is connected at one end to the surface unit in fluid communication with the outlet of the surface hose and at its other outlet end to a non-buoyant cleaning unit. The underwater hose and the cleaning unit have jets directed in a downstream direction so that the cleaning unit moves through water in the pool and the underwater hose pushes the surface unit around. The cleaning unit carries a bag in which debris is collected. The surface hose also carries a jet to pull the surface unit around. The surface unit also has a jet which displaces and rotates the surface unit.

Abstract: In a vessel such as a swimming pool, a turbine device is positioned on the bottom of the vessel to create an upward flow of water. The upward flow carries with it any larger debris, which are thereafter carried along the edge of the vessel and recovered by a skimmer. The turbine device is powered by the suction stream of a fluid circulation pump and filter system. Suction is thus created along the bottom of the vessel, which removes small debris. The upward flow of the turbine device is created by a plurality of spaced outlets which surrounds an impeller inlet. The outlets form high velocity streams which are spaced in a manner to exclude large debris from entering the impeller inlet.

Abstract: A treating tank which contains a bath of the liquid and a movable support for the tubular members in the bath. An infeeding device having a three-dimensionally sloping chute is disposed on one side of the treating tank above the bath and causes one end of the tubular members to lead as the tubular members enter the bath. A gratelike support is disposed in the treating tank and has a top surface, which slopes down from that side of the treating tank which is provided with the infeeding device to the other side. The gratelike support is provided at either end with a separate, controllable lifting and lowering device. An outfeeding device having a three-dimensionally sloping chute is provided above the bath on the other side of the treating tank.

Abstract: Process for the removal of coke from a coking reactor of a series of coking reactors, comprising the projection of water under pressure at the coke via a water-ejection device hanging from a flexible tube guided by a guide pulley movably mounted above the reactors for translation between each reactor of the series of reactors.

Abstract: An apparatus for cleaning the inside of tanks of various dimensions comprises a vertically disposed hollow tube inside the tank connected at its lower end to a hollow radial tube having a series of apertures horizontally disposed there along and having adjacent said apertures a plurality of scrapers, the apertures for permitting fluid under pressure to be directed against the inside walls and bottom wall of the tank the scrapers for providing a scraping action on the bottom wall of said tank. An aperture on the end of the radial tube permits fluid under pressure to be directed against the inside walls of said tank for facilitating removal of sediment. A source of fluid pressure is connected to the upper end of the vertically disposed tube providing the cleaning pressure for said tank.

Abstract: A swimming pool skimmer includes a float having skimming foil attached thereto. The skimming foil projects above the surface of the water to receive leaves and other debris thereover for deposit and retention in a receptacle. The receptacle may comprise a removable screen mounted below the float.

Abstract: A process and device for cleaning a rotary regenerative heat exchanger with a rotating part and a storage mass, for the transfer of heat from a higher-temperature, contaminated gas stream to a lower-temperature clean gas stream, in which upon reduction of the rotatory speed of the rotating part, jets of a cleaning agent and, immediately thereafter, jets of a gaseous drying agent, are sprayed onto the storage mass, with a continuous or step-wise radial displacement of the jets from the circumference to the center of the rotating mass and vice versa. The device includes a carriage, which is guided and driven radially over the storage mass. At least one nozzle each for a cleaning agent and a drying agent are on the carriage. A drive is associated with the rotor for establishing variable running speeds and lower cleaning speeds and for varying the rotatory speed of the rotor depending on the position of the carriage between the center and the circumference.

Abstract: As a preliminary step, the dirty filter is dried to remove substantially all moisture from the dust on the filter. The filter is then spun in a closed cabinet. Simultaneously, a jet of pressurized air is reciprocated in close proximity along the inner surface of the filter. Also at the same time, suction is maintained on the cabinet, to remove dust-laden air and assist in the dislodging of the dust from the filter paper. By the combined actions of spinning, close-coupled reverse air jetting, and suction, the dust can substantially all be removed from the dirty filter.

Abstract: A wash station for receiving, clamping, inverting, and washing a tank and pallet assembly consists of a stationary frame having a pair of idler rollers and a pair of drive rollers, and a rotatable carriage mounted on the rollers. The carriage includes two separate vertical arcuate wheel members resting on the rollers, a transverse tank support platform extending transversely between the wheel members, transverse support struts, horizontal and vertical wheel support members, and a movable hold down clamp with an integral nozzle assembly. The hold down clamp and nozzle assembly is movable to a clamped position engaging a tank and pallet assembly resting on the support platform. When the assembly is clamped, spray nozzles are inserted within the tank. The carriage containing the tanks to be washed is then rotated 180.degree., inverting the tanks. Wash fluid is then supplied via the spray nozzles into the interior of the tanks.

Abstract: A method for removing substances adhering to a surface such as a wall of buildings in which a nozzle head having a plurality of nozzles is rotated eccentrically and moved sidewardly when used. The diameter of each of the nozzles is selected so as to be within a range of 0.05 to 0.5 mm, the pressure to be supplied to the nozzles is 800 kg/cm.sup.2 or more, the total amount of water jetted from each of the nozzles is 12 l/min or less and the number of revolutions of the nozzle head is 800 to 4000 rpm.

Abstract: An essentially self-contained mobile tube cleaning machine which is remotely operable so that there is no need for operating personnel to be in close proximity to cleaning nozzles or other high pressure lines during tube cleaning operations. As a consequence, significantly higher water pressures and significantly higher water flow rates can be utilized thereby not only accelerating the rate of cleaning but also the efficiency and the effectiveness of the cleaning operation. Through the provision of a nozzle head at the end of an articulatable boom, it is possible to adjust the location of the nozzle through movement of the boom in order to clean the face of a tube bundle, the shell side of a tube bundle and the interior of the tubes themselves.

Abstract: An apparatus for cleaning a tank-like vessel comprising(a) a supporting arm attached to a fixing plate, which can perpendicularly extend downward,(b) a folding arm of which base portion is rotatably attached to the lower end of the supporting arm, a position of the folding arm being changeable between a housed position and a position in use wherein the folding arm is approximately horizontally stretched out,(c) a rope winded up and winded down by a hoist, and(d) a cleaning nozzle capable of injecting jet water in a two-dimensional direction or three-dimensional direction.

Abstract: An apparatus for cleaning a closed vessel having a retraction mechanism for extending or retracting a spray mechanism within the vessel. The apparatus includes a housing and door assembly for separating the spraying mechanism from the interior to the vessel when not in use.

Abstract: A pool sweep modification is provided for adapting an existing pool sweep to operate substantially below the surface of the water of a pool including a flotation device for positioning at one end of the water line of the sweep and a weight for attachment to the pool sweep head positioned at the end of the water line opposite the flotation device, the weight and the flotation device being balanced to maintain the pool sweep head substantially level during operation.

Abstract: Apparatus for fighting fires within storage tanks includes a frame movably coupled to the lip of the storage tank. The frame includes rotatable members by which the frame may be moved around the lip of the storage tank. Attached to the frame is a holding device adapted to hold a fire extinguisher nozzle on the interior of the storage tank so as to direct fire extinguishing agents down the inside face of the storage tank. The apparatus may include a fire detector to detect the presence and location of the fire, propulsion means to automatically move the apparatus around the storage tank to a location adjacent to the fire source, and a storage tank for storing fire suppressing agents be used to extinguish the fire.

Abstract: Disclosed herein is a portable swimming pool skimmer which can be positioned at any point along the periphery of a swimming pool. The portable skimmer includes a weighted base member from which extends in on outward and downward direction a bracket for holding a skimmer basket. The bracket is vertically adjustable so that the skimmer basket is positioned slightly below the water surface to allow a skimming action. At the bottom of the basket, a fitting to which one end of a pool hose may be attached is provided. The other end of the pool hose is attached to a suction line from the pool pump and filter assembly, which suction line may be a part of a built in skimmer or another hose from the built in skimmer to another device, such as an automatic pool cleaner. In the latter situation, a restriction in the skimmer hose is provided to minimize the suction pressure which operates the pool cleaning device.

Abstract: The invention relates to a handling machine designed in such a way that it can move along a surface having a random slope.The machine has a central chamber and at least one adjacent peripheral chamber with an open side, which can be sealingly applied to the surface by means of gaskets. This application is obtained by producing a vacuum in at least one of the chambers. The displacement of the machine on the surface, e.g. with the aid of caterpillars, is improved by producing an overpressure in at least one other chamber.

Abstract: An automatic swimming pool cleaning apparatus has a surface supply hose connected to a floating unit and a further underwater hose that is connected at one end to the surface unit in fluid communication with the outlet of the surface hose and at its other outlet end to a non-buoyant cleaning unit. The underwater hose and the cleaning unit have jets directed in a downstream direction so that the cleaning unit moves through water in the pool and the underwater hose pushes the surface unit around. The cleaning unit carries a bag in which debris is collected. The surface hose also carries a jet to pull the surface unit around. The surface unit also has a jet which displaces and rotates the surface unit. The surface unit has a flotation member that is rotatable about a vertical axis. A first connector is rotatably mounted below the flotation member and a second connector is rotatably connected to the first connector.

Abstract: A swimming pool cleaning apparatus carries a scraper and deflecting member along one side of a mouth defined by a receptacle of the apparatus and in advance thereof. The scraper and deflecting member has a blade inclined towards the mouth and having a leading edge that may scrapingly engage a wall or floor of the swimming pool. The scraper and deflecting member is pivotally mounted on the apparatus by means of two legs that extend from the ends of the blade. The blade has two ribs on its underneath surface parallel to its leading edge which assist in scraping the walls of the swimming pool.

Abstract: A skimmer cover plate is disclosed for use with a pool skimmer system. The skimmer cover plate allows the pool skimmer to work alternatively with an underwater suction operated pool cleaner. The skimmer cover plate is designed to seal the upper surface of the well of a skimmer. The hose of the suction cleaner is connectable to a pipe on the cover plate. The cover plate includes an indexable valve which is movable between two positions for varying the flow of fluid and debris from the pool directly into the well and basket of the pool skimmer. When fluid flow is restricted through the valve, the suction will be diverted to power the pool cleaner. When the valve is opened, debris will pass from the surface of the skimmer through the valve and into the basket for collection. An indexable valve is provided which indexes in response to the cycling of the pump.

Abstract: A low profile carriage is mounted on widely spread wheels to roll along the underwater surfaces of a swimming pool. The carriage is propelled by a high velocity stream of water projecting from a rearwardly directed thrust nozzle. There is a venturi restriction just forward of the thrust nozzle, creating a low pressure zone that induces flow of water through the bottom of the carriage, drawing in leaves and other debris. The water so drawn in passes through a screen, trapping the debris in a removable pod or bin depending from the carriage. The top of the carriage is relatively flat and the depending debris pod is curved downward to form an inverted air foil, whereby the pressure differential between the top and bottom of the carriage biases the carriage against the swimming pool surface traversed thereby.

Abstract: A lance assembly designed to clean sludge from the portion of the OTSG tube bundle which is inaccessible from the open tube lane. A track assembled between the OTSG outer shell and circular shroud around the tube bundle substantially opposite the open tube lane has a motorized carriage driven on the track which directs high pressure fluid through a plurality of nozzles toward the tube bundle through windows in the circular shroud. The nozzles are attached to a nozzle block which is capable of being moved vertically on the carriage to vary the flow impact area on the tube bundle.

Abstract: The spaces into which the vessel is divided by means of horizontal perforated partions are successively cleaned from top to bottom. Firstly the uppermost space is cleaned: the cover of the access to the space is removed, through the access a high-pressure lance is equipped with a spray head comprising a body rotatable about the lance axis and spray arms rotatably mounted on said body and liquid is sprayed with a pressure lying between 35 and 50 MPa. Then the middle space is cleaned: the cover of the access to the space is removed, through the access a high-pressure lance is equipped with a fixed spray head provided with spray openings directed in various directions and liquid is sprayed with a pressure lying between 50 to 70 MPa. Finally the lowermost space is cleaned in the same way as the uppermost space. The cleaning liquid is discharged through the outlet in the vessel bottom.

Abstract: A cleaning unit for collecting debris in a swimming pool has a hollow main body that is pivotally connected to a leading end section. The leading end section and the main body may pivot through about 10.degree. when in an operative configuration to accommodate curvature of a wall or floor of the swimming pool. The leading end section and the main body are kept in the operative configuration by fingers. The fingers extend from the leading end section into the main body and may be disengaged so that the leading end section may be folded over. The main body defines a mouth at its front end and houses a bag in which debris is collected. When the leading end section is folded over the bag may be removed for cleaning and re-inserted. The leading end section has a tubular conduit which is connectable at its leading end to a supply hose. The tubular conduit carries a displacing jet for displacing the unit.

Abstract: A propelled floating swimming pool skimmer having a plurality of angularly related channels with gate means in each of the channels permitting ingress of water and floating leaves and debris into a central area of the body of the device. Nozzles around the periphery of the body propel the unit in desired directions which change automatically in a desired sequence so the unit will cover the entire pool surface. The entrapped leaves and debris are forced downwardly in a spiral path by downwardly-directed jets into a mesh bag in which the leaves and debris may be removed from the pool and, in another form, the leaves and the debris are drawn downwardly through a mesh basket and then through a flexible conduit to the swimming pool vacuum system. Propulsion is accomplished by water under pressure furnished through a flexible conduit to the unit from a suitable source.

Abstract: An automatic pool vacuum unit is connected to a skimmer housing by a vacuum housing fitted in an inverted U-shaped opening in the skimmer weir, open to the bottom of the weir. In order to avoid interfering with normal pivoting of the buoyant weir by the vacuum housing, the housing in planes at right angles to the pivotal axis of the weir has upper outlines that are arcuate about that axis, and the vacuum housing has an outline matching the outline of the inverted U-shaped opening in planes through the weir pivotal axis, so that the vacuum housing substantially fits and substantially seals the weir opening as the weir pivots. A removable cover over the debris-collecting basket in the skimmer housing has an opening connecting with the vacuum housing and an adjustable opening for skimmer water spilling over the top of the weir. The vacuum housing is removably secured to the cover to facilitate removal of the debris collecting basket.

Abstract: A strainer basket for a swimming pool having a basket top closure affording two flow paths thus-through to the basket, one via a coupling for a suction hose which is so disposed that the hose can be introduced to the skimmer through a lateral throat at the pool surface, and the other via a weir-gated enclosure carried by the basket closure. The relative flow area of these flow paths is controllable by a valve mechanism.

Abstract: A releasably retainable fresh water flushing adaptor and method of manufacture thereof for outboard and stern-drive marine engines having an external lower propulsion housing which includes at least one fresh water intake port along the bottom forwardly bulbous portion of the lower housing. The flushing adaptor includes a molded cover which is mateably, releasably self-retaining over this forwardly portion of the lower housing and also includes a fitting connected or connectable into the bottom forwardly portion of the cover for releasable attachment to a supply of fresh water. The fitting has an internal passage in alignment and in fluid communication with the housing water intake. A water distribution groove formed into the interior surface of the cover adjacent the fitting for an increased water flow into the water intake is also provided.

Abstract: This invention relates to a washing system for washing tanks or the like, preferably ship's tanks (2) having one or more substantially horizontal stringers (2a-2c), the washing system (1) being provided with washing nozzles which while rotating about a substantially vertical axis are at the same time rotatable about substantially horizontal axes. In order that this washing system (1) shall provide effective cleaning of various nooks and recesses in the tank (2), the washing system comprises nozzle holders (9, 24 or 9, 9a, 24) arranged at various elevations, each of said nozzle holders having at least one washing nozzle (11, 25 or 11, 19, 25). An upper nozzle holder (9) at an upper elevation is detachably disposed on a standpipe (3) connected to the tank (2). An extension pipe (21 or 16, 21) is detachably and non-rotatably coupled to the upper nozzle holder (9) via a coupling (17). A lower nozzle holder (24) at a lower elevation is coupled to the extension pipe (16 or 16, 21) via a coupling (23).

Abstract: An erosive fluid jet tool for underwater operation, comprising an erosive fluid jet nozzle connected to a fluid receiver receiving fluid under elevated pressure for providing hydraulic power to the tool, the nozzle providing the working output jet of the tool; and a counterthruster for providing a counterthrusting force for balancing the thrust on the tool produced by the erosive fluid jet, the counterthruster including (a) a counterthrusting fluid jet nozzle connected to the fluid receiver and facing oppositely to the erosive nozzle for providing a counterthrusting jet, and (b) an open ended shroud coaxially surrounding the counterthrusting nozzle, whereby water surrounding the submerged tool is entrained through the shroud for providing additional counterthrusting force during operation of the counterthrusting nozzle, the erosive fluid jet nozzle and the counterthruster being constructed so that in excess of 50% of the hydraulic power provided to the tool is provided to the erosive fluid jet nozzle.

Abstract: A method and apparatus are disclosed for automatically cleaning extrusion screens in finishing machines of a type having a generally cylindrical perforated screen arranged in a housing, juice or the like laden with solids being introduced into the interior of the screen and urged against the screen by a screw element, paddle assembly, or the like to cause the juice to flow through the screen with the solids being retained on the screen. The cleaning method and apparatus comprise a cleaning unit with a plurality of spray nozzles arranged about the screen, the cleaning unit being moved back and forth along the screen by a reversing motor additionally controlled by suitable limit switches. The method and apparatus of the invention are preferably adapted for causing relatively increased cleaning action adjacent a solids outlet end of the screen to better remove larger amounts of juice solids or pomace deposited on that portion of the screen.

Abstract: A process for separating ceramic nuclear fuels out of metallic support mers or support member parts in which there adhere the nuclear fuels, especially subsequent to the burning down of the nuclear fuels in nuclear reactors. The ceramic nuclear fuels are washed off from the support member or carrier member part by means of a liquid jet which stands under a high pressure. The liquid jet is directed against the nuclear fuel, and the pressure of the liquid is set so high, that the nuclear fuel which adheres to the support member is completely removed. The liquid jet finds the transition from the ceramic nuclear fuel to the metallic support member material such that, even at a swelling of the fuel rod, and deformation of the support member part, there is achieved an efficient detaching of the nuclear fuel. The metallic support members or support member parts hereby remain intact and are segregated after the washing off of the nuclear fuel. Only the nuclear fuel fragments are introduced into the chemical solvent.

Abstract: A device for use with an automatic pool cleaner in a swimming pool which consists of a suction head and a suction pipe connecting the suction head to the filter of the swimming pool. The device comprises an attachment member adapted to be attached to the suction pipe of the pool cleaner, a buoyant member and means for connecting the bouyant member to the attachment member.

Abstract: Rinsing methods and apparatus employ a rotatable work support to spray rinsing liquid against a surrounding wall of a processing station. The rinsing liquid washes residual processing liquid from the surrounding wall of the processing station, whereby the work support performs a cleaning function in addition to its conventional processing function.

Abstract: The invention relates to a washing apparatus, especially to an apparatus for rinsing of glass bottles before first filling.The bottles to be rinsed are fed to the apparatus by means of a conveyor installation. The incoming bottles are picked up by a receiving means including a conveyor, the runway of which extending in a vertical plane. The bottles are transferred to a transportation device whereby the bottles are pivoted about 180 degrees. The transportation device includes a conveyor advancing said bottles to a rinsing station having a rinsing device and to a draining station. A removing device pick-up the clean bottles from the transportation device and transfers the bottles to a further conveying installation for discharging the bottles from the apparatus. During transferring the bottles are pivoted about 180 degrees such that upright bottles ready for filling are outputted from the apparatus.

Abstract: A washing apparatus for containers used to hold urine wherein a retaining member for retaining a plurality of urine containers arranged laterally in parallel is supported inside a body rotatably in one step or in a plurality of steps and a cover capable of closing a top opening of each urine container is disposed so as to be opened and closed in synchronism with the rotation of the retaining member, the cover and the urine container are rotated by a required angle by rotation transfer means so the urine may be discharged from the opening at a position where the top opening of the urine container faces downward, simultaneously the urine containers are cleaned successively or all at once automatically by cleaning agent and water ejected from a cleaning agent nozzle and a washing water nozzle provided at the positions corresponding to the opening and returning to the original state after the completion of the cleaning.

Abstract: A buoyant surface unit for pool cleaning apparatus, which is movable by asymmetrical jets and includes vibrating means.

Abstract: An attachment for use with automated pool sweeper systems attaches coaxially to the sweep hoses of such system and is carried thereby over the walls and floor of a pool to brush and buff these surfaces. The attachment is a tubular member of a porous foam-like material that is resistant to deterioration in chlorinated water and is resistant to shedding due to wear. The attachment may be snugly secured between wear rings on the hose and may be further secured by an elastomeric member encircling the attachment and the hose.

Abstract: An extendable and retractable cleaning apparatus includes a multi-stage extendable and retractable arm assembly formed of a plurality of cylindrical members assembled in a telescopic manner, an ejection nozzle provided at a tip end of the innermost cylindrical member of the arm assembly, a mount housing surrounding a substantially central portion of the arm assembly to rotatably support the arm assembly and a casing integrally formed at a base end of the outermost cylindrical member of the arm assembly to form a pressure chamber in cooperation with the assembly. A rotational driving device is provided within the housing for rotationally driving the arm assembly. A washing liquid feed hose is connected to the ejection nozzle. A compressed air feed pipe has one end mounted to the casing to communicate with the pressure chamber.

Abstract: This washing apparatus comprises holding a pipe assembly by means of a holding means. Said pipe assembly is consisted of a pouring pipe which acts to pour a wash liquid in micro wells of a container and a suction pipe which acts to suck said waste wash liquid from said micro wells. Said pipe assembly is formed of a dual-pipe consisting of a suction pipe and a pouring pipe disposed inside said suction pipe. The forward end opening portions of said both pipes are located on the substantially same plane.

Abstract: The sweeping assembly performs the method of drawing impurity-laden liquid from a reservoir throughout the depth of a body of liquid. The assembly comprises a flotation section, a surface skimming section, an intermediate suction section, and a bottom sweep and suction section. The flotation section includes a floating assembly which supports the surface skimming section, the intermediate depth suction section and the bottom sweep and suction section therebelow within the liquid in the reservoir. The surface skimming section includes a mechanism for removing impurity-laden liquid from the surface of the liquid in the reservoir. The bottom sweep and suction section includes a mechanism for placing impurities from the bottom of the reservoir into suspension within the liquid body for drawing impurity-laden liquid from the bottom of the reservoir.

Abstract: Pool cleaner swivel apparatus for above the ground swimming pools includes a generally hollow, toroidal shaped housing with a flotation cap comprising the top of the housing and side and bottom openings through which a swimming pool cleaner vacuum hose extends. A water chamber is connected to a water source, and a swivel plate, disposed at the bottom of the housing and the chamber, moves relative to the housing. The swivel plate is connected to a swimming pool cleaner water supply hose, and the swiveling of the plate allows the swimming pool cleaner to move in the swimming pool relatively unobstructed and without getting entangled in the various hoses.