Abstract: A hydrodynamic apparatus for cleaning channels and for monitoring channels is provided for pipes and channels. A disadvantage of all conventional bottom floor cleaners, flushing heads, and channel-cleaning nozzles is that during the cleaning process no observation and determination of the soiling state or, respectively, of the cleaning state of the channel and no recognition of damaged areas in the channel is possible. According to the invention, a monitoring unit (6) is installed selectively in or at the channel-cleaning apparatus. For this purpose, for example, a hollow space (11) is furnished at the bottom floor cleaner (S), wherein the monitoring unit (6) is partly integrated into the hollow space (11). The monitoring unit (6) exhibits a camera module (7) or two camera modules (7a and 7b). A video emitter (15) is coordinated to each camera module (7). The transmission to a video receiver (V) is performed without cable wireless from the video emitter (15).

Abstract: An apparatus for coating the inside of pipes An apparatus for coating the inside of pipes, in particular the coolant pipes of steam condensers and heat exchangers with plastics, having a supply unit (V) for bringing up and passing on coating material, an application unit (A) for applying the coating material brought up by the supply unit, and a control unit for monitoring and controlling the supply of coating material and the discharge of coating material on the inside walls of pipes, the application unit (A) having a guide tube (21) with a nose piece (29) to be mounted on the pipe to be coated and an application tube (18) with an application nozzle (30), said application tube being guided within the guide tube (21) and adapted to be introduced into the pipe to be coated through the nose piece (29).

Abstract: A washer for the flueways of a boiler which has an adjustable collar that is inserted between the boiler hood and the exhaust pipe. The collar has an opening through which a spray nozzle is inserted. The spray nozzle is connect to a hot water supply, and has a low voltage solenoid valve which can be connected to a thermostat to turn on and off the supply of hot water as needed.

Abstract: A hydrodynamic tool for the cleaning of pipes and channels exhibits a pressurized water-entry inlet opening (2) connected to pressurized water-discharge outlet openings (4) through water guide channels (3). The water guide channels (3) are continuously connected to the pressurized water-entry inlet opening (2) with a hose connection (2a). The water guide channels (3) exhibit a largest possible deflection radius (r) and partially converge into one another. At least two water guide channels (3) rest with the innermost point of the diameter (d.sub.W1) at the center point (M) and with their outermost point of the diameter (d.sub.W1) at the outer diameter (d.sub.E) of the pressurized water-entry inlet opening (2). The water guide channels (3), corresponding to the arrangement of the pressurized water-discharge outlet openings (4), are either merging into the end of the deflection radius (r) or into the straight line region (3.G) and in an angle (.alpha.

Abstract: A vehicle mounted high pressure water cleaning apparatus includes a water delivery system, hydraulic system, and an electrical system working together to provide, alternatively, high pressure water for a cleaning operation, or recirculation of high pressure water back to a water tank. The hydraulic system is operable to either direct water toward a cleaning operation, or to wind in or play out the water delivery hose while either supplying water to the delivery hose under pressure or recirculating the water back to the water tank.

Abstract: The invention concerns a process for fitting a gas-injecting nozzle in the wall of an installation. The process is characterized in that an external supporting surface (11) whose shape matches the so-called internal supporting surface (12) of the passage (6) provided in the bedding brick is associated with the nozzle (2); the nozzle is placed opposite the passage (6) in the bedding brick: the nozzle (2) is moved in axial translation so as to adjust the position thereof along the longitudinal axis of the passage and move the front face of the nozzle into a desired initial position; the nozzle is locked in this desired initial position; and, at least periodically, the nozzle is inserted further forwards into the passage in the bedding brick in order to compensate the wear in the front face of the nozzle. The invention can be used to prevent clogging, such as in a cement producing plant.

Abstract: A power driving waste line clean out tool which includes an elongated flexible coil spring formed from an elongated spring wire that is helically wound about a flexible water conduit. The water conduit provides water under relatively high pressure to a uniquely designed water jet clean out head assembly that is affixed to the end of the coil spring and is adapted to effectively break up and remove blockages formed in the sewer line being cleaned. A portion of the flexible coil spring is housed within a drum having a conoidal wall through which the coil spring is provided with a feed mechanism and is fed and retracted actually of itself as the drum is rotated.

Abstract: A hydrodynamic nozzle for the cleaning of pipes and channels exhibits a distribution chamber (7), joining to the pressurized water-entrance opening (4), wherein the pressurized water-discharge opening (5a, 5b) join into the distribution chamber (7) through channels (6a and 6b). The distribution chamber (7) exhibits a cone-shaped water subdivider (8), to which a defined radius (r1) follows, wherein the curvature of the radius (r1) is opposite to that of the pressurized water-entrance opening (4). The channels (6a and 6b) are merging tangentially at this radius (r1). Furthermore, the nozzle body (1) can be subdivided into an upper part (2) and a lower part (3), and can exhibit a separate form element (14), which forms the water subdivider (8) and the radius (r1), in the lower part (3). The degree of effectiveness is substantially increased with the nozzle according to the invention and thus the axial pressure of the exiting beam of liquid and the cleaning effect is substantially increased.

Abstract: Methods are provided whereby additive for thermoplastic materials may be recovered in a primary additive supply system simultaneously with the supply of an additive from a secondary additive supply system to a molten thermoplastic stream. Each of the primary and secondary additive supply systems is provided with respective recirculation lines so as to prevent sedimentation of the additive. According to the present invention, therefore, a protocol is employed whereby substantially all of the additive in the additive supply system, including that quantity of additive in the recirculation lines, may be recovered so that a fresh supply of additive (which oftentimes is different from the previous additive) may be connected for injection into the molten thermoplastic stream at the appropriate time.

Abstract: The present invention relates to a mobile pipe cleaning vehicle and a process for cleaning pipes with a mobile pipe cleaning vehicle. The vehicle can be used to clean pipes, e.g., wastewater or storm drainage pipes. The vehicle includes a tank housing divided into three tanks: a sludge tank for holding water with a high degree of sludge and debris, a water supply tank for supplying water to a high pressure pump for high pressure spraying of a pipe to be cleaned, and a water-in-use tank disposed between the water supply tank and the sludge tank. Water used from the water-in-use tank is used for helping to create a seal in a liquid ring vacuum pump, enabling the sludge tank to be placed in a vacuum. Cooler water in the sludge tank and the water supply tank cool the water in the water-in-use tank to prolong the life and increase the efficiency in the liquid ring vacuum pump.

Abstract: A circuit is provided for the circulation of solvent to and from a valve having a movable component and a housing for movably housing the movable component. The movable component has a first orientation with respect to the housing in which it permits the flow of a valved fluid from the valve through a first port provided on the valve and a second orientation with respect to the housing in which it permits the flow of the valved fluid from the valve through a second port provided on the valve. The circuit includes a first passageway provided between the movable component and the housing. A third port is provided on the housing for the introduction of the solvent into the housing and a fourth port is provided on the housing for removal of the solvent from the housing. The first passageway couples the fourth port to the third port. The solvent is a solvent for the valved fluid. A reservoir is provided for the solvent, along with conduits for coupling the third and fourth ports to the reservoir.

Abstract: During the cleaning of a beverage dispense line from a beverage container to a beverage dispenser, beverage is conserved by transferring beverage from the beverage dispense line to a beverage holding vessel, other than the beverage container, prior to cleaning of the dispense line. The beverage dispense line is then cleaned and the beverage from the beverage holding vessel is subsequently returned to the beverage dispense line.

Abstract: Contaminants are removed from oil well components by high pressure jets of hot water. The water and removed contaminants are retained and moved by suction to a holding tank for environmentally acceptable disposal. Rod strings move through a housing assembly which is attached to the pumping tee of the well. Nozzles in the housing assembly apply the water. The water and contaminants are sucked from an outlet in the lower bell cap of the housing assembly. The nipple in the bell cap extends upward at least to the upper edge of the bell cap to prevent water and contaminants from entering the well. Suction is provided by a suction pump which draws air from the holding tank. To decontaminate a tube one end of the tube is sealed off and a tee fitting assembly is attached to the other end. A nozzle fitting on a hose (termed a snake) propels itself through the tube as it removes contaminants. The contaminants and water from the nozzles exit through the tee fitting into a hose to the holding tank.

Abstract: A conduit cleaning jetting pig is provided, the pig having a central axis that can be aligned with a central axis of a conduit to be cleaned, the pig including: a seal means having an upstream side and a downstream side, the seal means effective to prevent a significant flow of fluids from the upstream side of the pig to the downstream side of the pig between the pig and the inside of the conduit when a differential pressure exists between the upstream side and the downstream side of the pig; a rotating element rotatably connected to the downstream side of the seal means; a plurality of nozzles connected to the rotating element each nozzle defining a flowpath through the nozzle for fluids to pass through each of the nozzles, and the flowpath in communication with a channel from the upstream side of the seal means to the flowpath with the flowpath through the nozzle aligned in part tangential to a cylinder around the central axis of the pig and aligned in part toward the inside wall of the conduit; and a frict

Abstract: A power driving waste line clean out tool which includes an elongated flexible coil spring formed from an elongated spring wire that is helically wound about a flexible water conduit. The water conduit provides water under relatively high pressure to a uniquely designed water jet clean out head assembly that is affixed to the end of the coil spring and is adapted to effectively break up and remove blockages formed in the sewer line being cleaned. A portion of the flexible coil spring is housed within a drum having a conoidal wall through which the coil spring is provided with a feed mechanism and is fed and retracted actually of itself as the drum is rotated.

Abstract: A device for washing the teat cups in a milking head, comprising an axially displaceable milking-head holder and a fitting therefor having rinsing nipples over which teat cups fit, wherein the milking-head holder has an axis which is eccentric to an axis of the fitting, and wherein the milking-head holder has an alignment rod mounted for sliding movement back and forth axially in a guide sleeve and whereas the device operates in a specific position wherein the axes of the milking-head holder and the milking-head fitting deviate from the vertical.

Abstract: A portable cleaning and flushing device for beverage conduits such as draft beer distribution coils includes a manifold, couplings and a number of valves which are controllable so as to sequence the supply of detergent from a reservoir, mixing with water from an external water source and flushing and rinsing of the distribution conduits. The device is wheeled about like a handcart and is coupleable to one or more beverage distribution lines by lead lines in place of normally attached kegs. The device is coupled to a water supply and to an electric power outlet. Detergent and pressurized water are mixed and flushed through the beverage conduit to an open spigot at the dispensing end. A preferably programmable computerized controller sequences the operation of valves for detergent addition to a manifold, venting of the manifold, water supply for obtaining a mixing solution, application of the mixing solution to the conduit, rinsing and finally draining.

Abstract: An apparatus and method are disclosed for producing and dispersing herbicidal foam within a sewer line in such a manner as to apply the foam to either the entire interior surface or a specific or a plurality of specific areas within a generally cylindrical line.

Abstract: A sewer cleaning nozzle is provided for attachment to a hose for supplying cleaning fluid through the hose to a number of nozzle tips carried on the nozzle body for providing a sweeping action for material collected in the sewer pipe as the nozzle is pulled forwardly by pulling on the supply hose. The nozzle body includes a central pipe portion and a rearwardly mounted chamber portion attached to the pipe portion. The chamber portion defines a radial front face carrying a plurality of nozzle tips at angularly spaced positions. A conical deflector within the chamber deflects cleaning water along the pipe portion outwardly of the chamber to a curved wall portion of the chamber causing the water to move smoothly around the chamber forwardly to the nozzle tips. Further nozzle tips are provided on the pipe portion having a reduced outward angle relative to the nozzle tips on the front face.

Abstract: Apparatus is provided for thawing frozen pipes or for cleaning pipes, for use with a source of warm thawing water or cleaning water, a source of compressed air, and a flexible tube suitable for being inserted into the end of a pipe through guide means to feed the water into the pipe while the tube is being advanced into the pipe. The apparatus comprises a valved water conduit having an inlet for connection to the source of water and an outlet for connection to the flexible tube, this conduit having a movable valve. A compressed air powered drive, usually a rotator, connectable to said source of compressed air, is arranged to move the valve in such manner as to continually interrupt the flow of water in the conduit and so to produce a pulsating flow of water in the tube for thawing ice in the frozen pipe or cleaning the pipe. The rotator for the valve may be a compressed air driven ratchet drive. A valve may also be provided for injecting air into the pipe to clear out ice or dirt.

Abstract: A cleaning apparatus (10) for removing residual paint from flow passages in a spray painting system comprises a flow passage (12) for conveying paint to a spraying device (14) and a manifold (16) defining a plurality of individual inlets (17) into the flow passage. At least two different paints are supplied to the manifold through the inlets. A solvent supplier (20) supplies a variable pressure and variable volume flow of solvent to the manifold (16) during a cleaning cycle to remove residual paint from the manifold and the flow passage (12) after a completed painting cycle to prepare for a new cycle. The assembly is characterized by including a constant volume flow controller (22) for maintaining a constant volume flow of solvent upstream of the manifold (16) independent of solvent pressure fluctuations.

Abstract: A process for the cleaning and/or disinfection and maintenance care of an, in particular, hollow or tubular medical treatment instrument, in particular a medical or dental treatment instrument, such as a handpiece, in which the treatment instrument is cleaned and/or disinfected with a preferably liquid cleaning and/or disinfecting agent and is then subjected to maintenance care with a maintenance care agent, is characterized in that, there is used a cleaning agent and/or a disinfecting agent and/or a maintenance care agent, one or more of which agents contains or contain a medium which ensures mixing of the cleaning and/or disinfecting agent with the maintenance care agent.

Abstract: In the program-controlled cleaning of endoscopes in a cleaning apparatus, the head parts are cleaned, rinsed, disinfected and rinsed clean in pressure chambers and, at the same time, the insertion tubes are cleaned, rinsed, disinfected and rinsed clean in pipes, attached to these pressure chambers, in a number of cleaning stages using cleaning liquid which is introduced via a circulation pump at a pressure of approximately 200 mbar. Prior to each of these cleaning stages, compressed air generated in the compressed air unit of the cleaning apparatus is introduced from there through the pressure test attachment of each endoscope, which pressure test attachment is connected by means of a pressure test adaptor to a compressed air attachment of the cleaning apparatus, until an internal pressure of 250 mbar is reached.

Abstract: In an endoscope system including an endoscope having an insertion section insertable into a cavity under inspection and an operation section to which a proximal end of the insertion section is connected, and a disposable protection cover having an insertion section cover for covering the insertion section of the endoscope and an operation section cover for covering said operation section of the endoscope, said operation section cover is constructed such that it can be commonly used to cover operation sections of a plurality of endoscopes. Upon removing the insertion section of the endoscope from the insertion section cover, the insertion section section cover is supported by a supporting apparatus including a proximal end supporting unit for supporting a proximal end of the insertion section cover and a distal end supporting unit for supporting a distal end of the insertion section cover.

Abstract: A bladed cylindrical member with high pressure fluid jet nozzles cuts and sweeps aquatic foreign matter from the inside surface of underwater pipes. The method for removing the foreign matter includes reciprocally pulling the device through the pipe and injecting high pressure air into a containment area to force any extricated foreign matter to the surface.

Abstract: An apparatus for cleaning waste collection systems of solid materials using normal and injected water flow to suspend the solids in a slurry, A submersible pump moves the slurry from a collection point up to a pressurized container where the water content of the slurry is decanted and reused as injection water while the particulate material settles to the bottom of the pressurized container. When the container is filled with solid material it may be removed for emptying at a waste dump.

Abstract: An apparatus for cleaning and testing endoscopes by injecting pressurized air into the sheath and pressurized air and washing liquid into the ducts, and monitoring the same. A washing chamber is provided which contains retractable cages to hold the endoscopes during cleaning and testing. The cages include a coupler for detachably connecting tubes supplying the air and washing liquid to the endoscopes. The cages also have markings for automatically activating the apparatus when a cage containing an endoscope is inserted into the washing chamber.

Abstract: A unique cleaning method and structure is disclosed which pulses pressurized fluid into a vessel. The pulses clean internal surfaces within the vessel. The internal surfaces may include the internal surfaces of the vessel, or may include items to be cleaned which are placed within the vessel. The pulsed fluid preferably cavitates within the vessel, and impacts upon the surfaces to be cleaned, removing impurities such as scale or other buildup. The fluid may then be directed downstream and recirculated back through the system. Pulses of fluid are cyclically controlled by a control valve to optimize the amount of cavitation within the vessel.

Abstract: An apparatus for washing pellets of magnetic particles magnetically bound to the bottom of a test tube employs a liquid handling probe having an aspiration channel with a forked inlet for positioning the probe onto the periapical region of the test tube for optimizing both the aspiration and expression of liquids. While contacting the periapical region of the test tube, the forked inlet may aspirate liquid adjacent to the pellet without contacting the magnetic particles. Furthermore, the contact between the forked inlet and the periapical region of the test tube, serves to position the outlet of the liquid channel directly over the pellet for dislodging and resuspending the magnetically bound pellet with a forceful stream of wash liquid.

Abstract: A valve bushing cleaning device for cleaning a valve bushing while the bushing is situated in a valve bore of a valve body, such as in a railway vehicle brake apparatus and a method for cleaning such valve bushing. The cleaning device comprises a hollow cylindrical conduit having a first open end attachable to a source of pressurized fluid and a second closed end. The conduit has a recessed portion with fluid passageways through the wall thereof and structure for securing a sealing member on each side of the fluid passageways. In the method, the closed end of the cleaning device is inserted into a valve bushing disposed in a valve bore of a valve body, with pressurized fluid forced through the conduit, out of the fluid passageways, and through apertures in the valve bushing, with any solids picked up and carried by the fluid through passages formed in the valve body.

Abstract: A foam generator is provided for generating a treatment foam within a pipe, such as a sewer pipe, in need of treatment. The foam generator includes a foam generating head having a first perforated conduit for carrying a fluid such as compressed air and a second perforated conduit surrounding said first conduit for carrying a fluid such as a liquid which contains a foaming agent and a treatment chemical. A wicking material surrounds the first and second conduits in the foam generating head and receives the compressed air and liquid from the conduits and causes the production of a foam. A pressure casing can surround the foam generating head for delivering the foam under increased pressure to coat an inner wall surface of the pipe.

Abstract: A method and an apparatus are disclosed for cleaning water pipe. The pipe is preferably connected to a source of water which normally flows through the pipe to an outlet. A valve is positioned at the outlet and is rapidly opened and closed. When the valve is closed a pressure pulse is created in the pipe and travels towards the source of fluid. This wave is reflected back from the source towards the outlet. The alternate waves expand and contract the pipe wall, and cause pressure fluctuations within the pipe. The combined action removes scale from the wall of the pipe, and when the valve is opened the removed scale passes out of the pipe.

Abstract: An apparatus for applying dry herbicides to sewer lines which includes a container for storing a herbicide, a length of tubing, and nozzle means connected to the tubing. Also included are means for propelling herbicide stored in the container through the tubing such that herbicide may be dispersed from the nozzle. Locomotion means are also provided for transporting the nozzle within the interior of a sewer line such that the interior surfaces of a sewer line may be sprayed with a herbicide. In this fashion herbicide may be directed at any flora growing within the sewer line.

Abstract: The invention relates to an apparatus and process for removing lube and other contaminants from the inside of a tube, the apparatus comprising a flexible hose having a nozzle at one end thereof which is conveyed by a pair of pinch rollers through the length of the tube to be cleaned. A high pressure cleaning fluid is supplied to the nozzle and the pressurized fluid removes the lube and other contaminants from the inside of the tube. The apparatus seals both ends of the tube to be cleaned and provides drainage of the cleaning fluid from the interior of the tube. The apparatus can be used for automatic cleaning of tubes manufactured from a pilger reduction mill or other similar manufacturing process.

Abstract: A liquid chlorine injection line cleaner is provided and consists of a cylindrical housing with a built-in cleaning mechanism between a pipe line from a liquid chlorine metering pump and a water main line so as to prevent liquid chlorine chemical build up and line blockage.

Abstract: Disclosed is an apparatus for cleaning the interior of elongated tubular objects such as pipes, tubes, etc., using a reciprocating lance having a cleaning fluid spray head at its end. Fluid pressure provides reciprocating movement to the lance. The cleaning fluid pressure is independent of the fluid which provides movement to the lance, thereby maintaining the desired fluid pressure to the nozzle through the complete cycle of reciprocation.

Abstract: The invention relates to an apparatus for flushing a hydraulic small-diameter pipe system or the like. Two pressure accumulators (33a and 33b) are arranged at one end of the pipe system (20), connectable alternately to the pipe system and to a tank (39), for receiving a volume of liquid corresponding to volumes of gas and liquid, respectively, which are alternately introduced into the opposite end of the pipe systems for filling the pipe system with alternating columns (42, 43) of flushing liquid and compressed gas, and on achieving a predetermined pressure in the pipe system, the pipe system is opened into a receiving tank, whereby the compressed gas is suddenly expanded and drives a forceful flushing pulse through the pipe system.

Abstract: Apparatus and method for cleaning heat exchangers when overhauling transmissions or the like wherein the inlet and outlet of a heat exchanger is disconnected from the transmission and connected to a source of solvent, oil and air. Solvent is first injected into the heat exchanger in a direction reverse to the normal flow of oil through the heat exchanger. This injection of solvent is stopped, then started again after a predetermined delay time. This injection and delay cycle may be repeated.Air is now injected under pressure into the heat exchanger in a direction reverse to the flow of oil therethrough, i.e. in the same direction as the solvent injection.Thirdly, oil is injected into the heat exchanger in the normal direction of flow of oil therethrough for a predetermined time. This injection of oil is stopped for a predetermined period of time. The injection and delay cycle for oil injection may also be repeated.

Abstract: Coating with clinging foam the upper interior walls of a generally horizontal pipe. A high-pressure pump, connected to a source of water, delivers jetting water to a nozzle through a normally reeled hose. The nozzle has a body divided by a pressure-actuated valve into two chambers, the first one having a series of high-pressure jet exits. The valve is normally open and, when the high pressure is off, leads into a second chamber having a foam outlet. Two pump and metering devices and a compressor then deliver water, chemical and air mixed into a damp sloppy foam to the hose and then, after working at foam to the desired expansion ratio, to the nozzle. A skid supports the nozzle and has a series of skid rods regularly spaced around it so that at any time two of the skid rods engage the bottom part of the wall of the pipe to be coated and hold the nozzle well above the liquid flow in the pipe's bottom.

Abstract: A valve assembly having a diaphragm valve configured for efficient cleaning and sterilization, and a method for operating the valve assembly in a manner controlling the fluid material flow therethrough and for effecting cleaning thereof. The valve assembly includes a valve body defining inlet and outlet ports. The diaphragm valve is operably arranged between the ports. An actuator mechanism selectively positions the diaphragm valve relative to a valve seat defined by the valve body. A selectively operated clamping mechanism arranged on one side of the diaphragm valve develops a clamping force which is used to seal the diaphragm valve against an annular sealing surface area defined by the valve body. A cleaning system arranged on an opposite side of the diaphragm valve facilitates internal cleaning of the valve assembly, including the diaphragm valve and the annular sealing surface area upon release of the clamping force acting against the diaphragm valve.

Abstract: An operator protection device for use in connection with the operation of a sewer and/or catch basin cleaner containing a pressurized water hose, wherein the device comprises a first protective enclosure portion and a second enclosure member comprising a tubular sleeve of tough, flexible material slidably containing an exposed portion of the pressurized hose for protection of the lower extremities of an operator in the event of hose rupture or disconnection of a coupling member used to join sections of the pressurized water hose, and for ease in access and visiblity to the sewer and/or catch basin.

Abstract: Coating with clinging foam the upper interior walls of a generally horizontal pipe. A high-pressure pump delivers jetting water to a nozzle through a normally reeled hose. The nozzle has a body divided by a pressure-actuated valve into two chambers, the first one having a series of high-pressure jet exits. The valve is normally open and, when the high pressure is off, leads into a second chamber having a foam outlet. Two pump and metering devices and a compressor then deliver water, chemical and air mixed into a damp sloppy foam to the hose and thence to the nozzle. A skid supports the nozzle and has a series of skid rods regularly spaced around it. A gravity-operated device at the outlet is connected to the foam outlet from the nozzle's second chamber and causes expulsion of the foam toward the walls of said pipe lying along a predetermined upper sector only.

Abstract: A vacuum refuse collecting vehicle has a tank divided into two hermetically sealed compartments by an internal sloped wall. The forward compartment functions as a water tank and the rear compartment as a waste containment tank. The capacity of the compartments can be increased by the addition of spacers to the cylindrical tank to make the tank longer, by changing the angle of the internal sloped wall, or by changing the depth of the concave end walls of the tank. The rear compartment is equipped with an upwardly tilting hinged concave tail gate for emptying the waste therefrom. The airstream which deposits the waste material in the tank is directed out of the tank into one or more bag filter housings, through an air pump, a silencer, and then to the surrounding atmosphere. The bag filters are so mounted and constructed that they may be removed through the bottom of the housings, thereby maintaining the upper portions of the housings substantially free of waste material.

Abstract: A mobile vacuum loading machine has a swivel assembly permitting the boom to be rotated 360.degree. through the use of internal hydraulic and pneumatic passages in the swivel assembly. The hose reel is mounted on the rear of the machine and capable of being swung out outwardly a full 180.degree. and fixedly held at any position through the use of a linkage assembly attached to a hydraulic cylinder.

Abstract: A method and apparatus provide for selective generation of pulses at water jets of a jet nozzle terminating a high pressure cleaning hose of a sewer cleaning machine. A ball valve is connected as a pressure bleeder to the high pressure side of the sewer cleaning machine pump and hence, the cleaning hose, for relieving pressure from the hose when the valve is open. A motor is connected to operate a rotatable element of the ball valve to automatically cycle the valve and generate a series of high pressure pulses at the water jets to thereby generate a hammering action to assist in penetration of blockages in a sewer being cleaned. The amplitude of the pulses is controlled by a second valve connected to the ball valve and the pulses preferably are generated at a frequency of approximately 3 hertz. The motor may be activated and deactivated by a blockage sensor which detects engagements of the nozzle with blockages formed by concentrations of refuse and debris within a sewer being cleaned.

Abstract: A sanitary control back pressure diaphragm valve employed in a sanitary control system wherein the sanitary valve controls the pressure applied to a fluid in a sanitary contained system, which valve comprises: a valve body having an upper and lower valve member defining a generally conical fluid passageway and a valve seat, the members adapted to move between an open position and a closed position; a diaphragm support between the upper and lower members and a resilient diaphragm on the members on the diaphragm support to provide a seal between the upper and lower members and to provide for relative movement of said valve members between the open and closed valve position, the upper and lower valve members defining a generally conical valve passageway between the valve members, and the valve including a pressurized air inlet to provide controlled air pressure of one member; a sanitary fluid inlet extending in a straight line at an angle into the fluid passageway and a sanitary fluid outlet for the discharge of

Abstract: For removal of the contaminant deposits from a surface such as a tube sheet of a vertical tube heat exchanger, as in a nuclear steam generator, having plural spaced heat exchange tubes connected to the tube sheet, a lance is radially moved along the tube sheet between parallel rows of tubes. The lance carries a nozzle for ejecting a stream of high pressure cleaning fluid toward the sludge deposits, the nozzle acting cyclically to sweep the stream throughout a range of directions centered about the nozzle axis. The nozzle may include diverting streams for deflecting the cleaning fluid stream, with the diverting streams either being generated by a fluidic oscillator or being fed back from the outlet portion of the nozzle. Alternatively, pivoting vane means may be provided in the nozzle to divert the cleaning fluid stream.

Abstract: A portable, multiple purpose drain cleaning apparatus comprising a payout drum supporting a snake hose wound thereon and supported for rotation on a portable support frame, a plurality of fluid tanks in selective fluid communication with a powered pump connected to the snake hose, and a spray hose assembly for providing a source of high pressure fluid for external cleaning operations. A valve assembly is provided for alternately directing the pressurized fluid to the snake hose or to the spray hose assembly. A pressure sensing unit communicates with the spray hose assembly for selectively activating and deactivating the power source powering the pump in response to the pressure of the fluid in the spray hose assembly. In another embodiment a valve assembly is provided to define an open flow path of the fluid during start-up of the pump.

Abstract: A cleaning system in which an elongated object having enclosed channels can be inserted in a rotatably mounted container in a tank to coil therein for cleaning by fluids pumped through the object and into the tank.

Abstract: A highly portable, multiple purpose drain cleaning apparatus comprising a payout drum supporting a snake hose wound thereon and supported for rotation on a portable support frame, a plurality of fluid tanks in selective fluid communication with a powered pump connected to the snake hose, and a nozzle attachment removably supported at the distal end of the snake hose. In one embodiment, with the snake hose wound in its storage mode thereon, the payout drum is quickly removable and replaceable with another payout drum containing a different diameter sized snake hose. Selective high pressure fluid jetting and/or cutting modes are available over a wide range of drain pipes and passage access through various trap sizes and short bends.