Abstract: A device for coating the internal surface of a pipeline with a cement-sand mixture, includes a mechanism (1) for applying a coating, systems (2 and 3) of feeding the cement-sand mixture and the working medium, hoses (4 and 5) a pull rope (6) and a winch (7). Wound on the shaft (8) of the winch drum (7) are the pull rope (6) and the hoses (4 and 5), some ends of which pass through the cavity of the shaft (8) and communicate through the supporting assemblies (11) of the shaft with respective systems (2 and 3) for feeding the mixture and working medium, and the other ends of which are connected to the mechanism for applying a coating. A joint winding or reeling off of the hoses (4 and 5) and the pull rope (6) make it possible to substantially streamline the maintenance of the device, as well as freely pass the working medium and the cement-sand mixture and water for washing the hose (5) through the hoses.

Abstract: A method of lining pipes comprises the steps of laying along the pipe (56) hoses (63) filled with constituent components of a settable resinous lining composition, axially slitting the hoses, conveying the constituent components to a mixing chamber (65), and centrifugally impelling the mixed lining composition against the wall of the pipe (56). A lining apparatus (50) for carrying out the method is advanced along the pipe (56) and comprises delivery tubes (62) with slitting blades (70) at their leading ends which are pushed through the holes (63) and which communicate with a mixing chamber (65) which, in turn, is open to a centrifugal impeller (57) of a lining machine. The slit and emptied hoses (63) may be left in situ in the pipe (56) or removed therefrom in advance of the lining apparatus (50). A trowelling arrangement using a thin-walled, flexible tube (112) of, for example, a cellulose polymer and a conical trowel (112) is employed to smooth the pipe lining.

Abstract: Apparatus for applying a lining material to a conduit comprises an elongate flexible pipe for lining material. A dispensing nozzle is provided at one end of the pipe and the other end of the pipe is squeezed between a pair of driven rollers to expel the lining material through the dispensing nozzle as the pipe is drawn through the conduit. A pair of circular steel wire brushes are mounted on the pipe below the dispensing nozzle center the pipe in the conduit and also clean the side wall of the conduit ahead of the nozzle. The cross-sectional area of the pipe is calculated so that as the pipe is pulled back down the conduit it deposits an evenly distributed, predetermined amount of lining material on the side wall of the conduit.

Abstract: Apparatus for cleaning radioactive tube banks which have open ends contained in a plane, preferably for cleaning the tube banks of tube bank condensers, includes a high-pressure hose, which is pushed through each of the tubes and which at its free end carries a spray nozzle for discharging a cleaning liquid. The hose is disposed between and positively or non-positively coupled to two feed wheels and is advanced and retracted by the feed wheels in a direction which is parallel to the tubes. The feed wheels are provided with a hose drive and mounted in a cleaning carriage, which is movable by a carriage drive in a plane which is defined by a frame. The cleaning carriage is fixed in cleaning positions, and the frame is provided with a device for fixing the frame to the tube bank.

Abstract: A method and apparatus of applying a protective coating to the inner cavities of vehicle body components comprises a frame supporting a plurality of spray guns which is adapted to mount in a locked position upon the vehicle panel to be coated. Sensors indicate the presence of the frame in a locked position and send a signal to an electro-pneumatic controller. The controller includes a bank of pneumatic valves which interface with the spray guns and sensors mounted to the frame, and a programmable computer control which activates the pneumatic valves. Once the frame is positioned and sensed in a locked position, the controller activates linear actuators which move the spray guns to a predetermined, spraying position with respect to the vehicle body component. Sensors indicate the presence of the spray guns in such spraying position, and send a signal to the controller.

Abstract: The present invention relates to a lining apparatus for a pipe having a plurality of constitutive elements which are connected to each other in a line and include as a whole at least one driving means for moving the apparatus in the pipe, a pair of tanks for containing respective paint materials such as main material and hardener, a pair of feeding devices for feeding the respective paint materials, and a paint injecting device for making paint by mixing the paint materials fed by the feeding devices and injecting the paint to the interior surface of the pipe. The paint injecting device has a hollow rotary injector which is rotated by a driving means and has at least one radially elongated portion forming a nozzle at outer end thereof. The radially elongated portion of the rotary injector has a plurality of guide plates inside thereof for mixing the paint materials passing therethrough.

Abstract: Tank cleaning apparatus is disclosed for cleaning the inside of large railroad car tanks and the like. A sprayhead carrying one or more spray nozzles is mounted on a holding bar which includes a C-shaped semi-circular section and which is mounted on a carrier frame at the outside of the tank for pivotal movement about an axle through the center of curvature of the C-shaped section. The sprayhead is mounted at an end part of the holding bar which extends radially outwardly with respect to the C-shaped section in such a manner that in one end position of the holding bar the sprayhead means is aligned with the center axis of a tank manhole opening and that in the other end position is disposed adjacent the inside end surface of the tank being cleaned. The carrier frame is rotatably mounted at the manhole to accommodate rotation for cleaning respective opposite ends of the tank.

Abstract: A method for lining pipes in a town gas underground pipeline. The method is characterized in that carrier air is flown together with plastics mist passing through a route comprising a branch line for distributing the gas to consumers, so that the pipeline and branch pipe are lined with the plastics.

Abstract: An apparatus and method for metalizing the interior of pipes or tubes is disclosed. The base metal pipe or tube to be internally metalized is moved axially while simultaneously being rotated at a relatively high rpm. A first pre-heat means, preferably an induction heating means, heats a portion of the pipe and its interior to a first elevated temperature, and particles of the metalizing material are deposited into the interior of the pipe to be heated to said first elevated temperature. The rotation of the pipe distributes the fluidized particles into laminae which, under the further influence of centrifugal forces, automatically distributes the semi-fluidized particles effectively. The fluidized metalizing material is bonded together and to the body substrate by application of a second induction heat at a higher heat level or temperature at which bonding occurs between the laminae of metalizing material and between the metalizing material and the base material of the tube or pipe.

Abstract: Apparatus for applying a coating to one of two walls forming a narrow vertical elongated space comprising a vertical guide track supporting a vertically displaceable carriage thereon adapted to removably fit in the said narrow vertical elongated space; a power driven system for vertically displacing the carriage; and a system supported by the guide track for releasably securing the guide track against movement lateral to the two walls and sideways in the narrow vertical elongated space.

Abstract: A distributor head for throwing mortar onto the wall of a pipe (12) being lined. A set of inner rotating vanes (56) throw the mortar onto an outwardly flared conical surface (40 ) and the mortar travels along the surface (40) to the outer vanes (48) on its outer edge from which the mortar is thrown in a high velocity, dense stream against the pipe wall. The inner vanes are individually and releasably fitted into a collar (60) at the inner edge of the flared conical surface.

Abstract: A fay surface sealing tool for applying sealant between wing skin and spar chord joints prior to fastener installation. The fay surface sealing tool includes a plurality of plurality of spaced apartures for dispensing the sealant in bead form between each row of fastener holes and on each edge margin subsequent to joint opening.

Abstract: Apparatus for coating selected portions of the troughs of a corrugated pipe within an adhesive includes a support disposed within the pipe with a reservoir containing the adhesive disposed on the support. A pump, including a spout, is utilized for supplying the adhesive from the reservoir to a trough of the pipe. A rotatable applicator is supported on the support and contacts the trough of the pipe. The applicator itself is sized so as to fit within the trough, and contacts the adhesive in the trough and spreads the adhesive in the trough upon rotation. A trough shield, supported by the support and disposed in the path of rotation of the applicator, is utilized to prevent the applicator from contacting selected portions of the trough. A locator head is also disposed on the support and provides a way for aligning the spout, the applicator, and the trough shield with the trough.

Abstract: The present invention relates to a device for simultaneously projecting a liquid or pasty product and a powdery, granulous or fibrous filler to make a reinforced plastic wall coating, in which the product is brought by pumping to a centrifugal projection member with central supply channel, wherein it comprises, for projecting the product, a revolving spray device with its central supply channel and, for projecting the powdery filler, a centrifugal wheel and a means for supplying the filler to the centrifugal wheel, the revolving spray device and the centrifugal wheel being mounted on the same shaft in the vicinity of each other.

Abstract: A coating method and apparatus for coating the inner surface of a long tube of small diameter, specifically tubes for a condenser. The coating is a type of spray coating wherein a long flexible supply hose, longer than the long tube to be coated, is reciprocated in the long tube with a spray nozzle attached to the tip thereof for spraying the paint by the action of compressed air, from one end of the long tube to the other end thereof while spraying the paint in atomization. The long flexible supply hose of double structure or sometimes of triple structure is composed of a short heating pipe portion adjacent to the spray nozzle and a long flexible hose portion. The paint and compressed air supplied through separate passages in the supply hose are heated to a predetermined temperature by heating means, for example, a sheathed electrical heater wound about an inside pipe of the heating pipe portion upstream of where the paint is sprayed.

Abstract: A fay surface sealing tool for applying sealant between wing skin and spar chord joints prior to fastener installation. The fay surface sealing tool includes a plurality of plurality of spaced apertures for dispensing the sealant in bead form between each row of fastener holes and on each edge margin subsequent to joint opening.

Abstract: A method and apparatus for coating a long tube of small diameter by means of inserting a supplying hose of double structure, with a spray nozzle ahead and two separately extending inner and outer hoses for supplying paint and compressed air respectively therethrough, into the long tube from one end opening thereof toward the other end opening thereof, and retracting the spray nozzle, when it has reached the destination, while spraying the paint at a predetermined speed. The inner hose for the paint is made of flexible material as an elastic hose for being compressive in the diametrical direction under the pressure from the compressed air in the outer hose and again restorable to the original shape when the pressure is released.

Abstract: An internal pipe coating apparatus for coating the interior surfaces of uncoated weld joints in an otherwise internally coated pipeline comprising a frame movable longitudinally along the interior of the pipeline, the frame having a shaft at its forward end and disposed generally along the longitudinal center line of the pipeline, a coating assembly comprising a pair of horizontally spaced arms mounted for rotation on the shaft and extending radially outward on opposite sides thereof, a pair of spaced parallel links having their inner ends pivotally connected to the outer ends of the arms and having their outer ends pivotally connected to a pair of triangularly shaped mounting plates, each mounting plate being in the shape of an obtuse isosceles triangle having a single obtuse angle and a pair of smaller acute angles, each mounting plate being pivotally connected to its associated link at the apex of the obtuse angle, a wheel mounted on each mounting plate at the location of each acute angle thereof, a hollow

Abstract: A pipe interior surface coating device having a spray apparatus for distributing a coating material around an axis of rotation. A carriage supports the spray apparatus and is adapted to be moved longitudinally inside a pipe. A bracket may be used to position the spray apparatus at a chosen distance away from one end of the carriage and the carriage may include apparatus to position the axis of rotation of the spray means concentrically within the pipe.

Abstract: A spray coating tool used for coating the inner surface of a tube. The tool sprays a desired paint through a nozzle while the tool is being shifted inside the tube to be coated along the axis of the same tube. In the nozzle a nozzle insert having a prism portion, on the external surface of which at least one spiral groove is formed, is inscribed to the inner surface of a hollow cylindrical space of a nozzle cap of the above-mentioned nozzle. A plurality of straightly elongated grooves, formed between the inner surface of the nozzle cap and the sides of the prism portion of the nozzle insert, and the spiral groove function to impart atomizing gas a straightly going force and a spirally going force, so as to spirally spray the paint supplied through a paint supply passage extending along the axis of the nozzle insert.

Abstract: The invention contemplates an elongate extension nozzle attachment for a gas torch whereby flame-spraying of coating-powder material may be applied with precision to the bore of a workpiece. The attachment is detachably securable to conventional torch and/or gas-distributor structure and provides independent flows of (a) carrier gas and powder and (b) combustible-gas mixture to a nozzle which is removably fitted to the discharge end. Provision is made for optional use of one or more flame-shaping discharges of air, inert gas or the like at the discharge end, using a further independent supply system within the attachment.

Abstract: This invention relates to apparatus for lining or coating the interior of lengths of large diameter, e.g. sixty inch (152.4 cm) pipe by applying fluent material thereto, and more specifically relates to such apparatus wherein a pipe liner vehicle travels through the pipe applying the material as it moves therethrough.

Abstract: An improved apparatus for maintaining the lance portion of a coating device accurately centered within the bore of a tubular conduit to be coated as the lance is moved axially through such bore. The tubular element of such coating lance is supported by a saddle which in turn is supported between two elongated skids which are respectively engageable with opposed top and bottom surfaces of the conduit bore. Radially projecting pins are respectively provided on each side of the saddle. Two pairs of expanding links are respectively pivotally mounted on each end of the saddle pins in an X configuration and one end of each link is pivotally connected to a pivot mounting bracket formed on one of the skids.

Abstract: The applicator includes two elongated conveyor rollers arranged in parallel alignment and inclined from a sealant application station toward a tire unloading station. The rollers simultaneously rotate a series of tires in the same direction about a common axis in side-by-side engagement with one end tire adjacent the sealant application station and the other end tire adjacent the unloading station. A kicker assembly unloads the latter end tire, whereupon the rollers advance the remaining tires toward the unloading station while maintaining coaxial rotation thereof. A fresh tire then may be positioned at the application station and the application and advancement steps repeated. The applicator further includes a sealant applicator for effecting airless spray application of sealant to a tire, together with a control system for controlling the position of the spray applicator and causing sealant to be purged a predetermined time after no sealant application is made.

Abstract: The applicator includes two elongated conveyor rollers arranged in parallel alignment and inclined from a sealant application station toward a tire unloading station. The rollers simultaneously rotate a series of tires in the same direction about a common axis in side-by-side engagement with one end tire adjacent the sealant application station and the other end tire adjacent the unloading station. A kicker assembly unloads the latter end tire, whereupon the rollers advance the remaining tires toward the unloading station while maintaining coaxial rotation thereof. A fresh tire then may be positioned at the application station and the application and advancement steps repeated. The applicator further includes a sealant applicator for effecting airless spray application of sealant to a tire, together with a control system for controlling the position of the spray applicator and causing sealant to be purged a predetermined time after no sealant application is made.

Abstract: A coating spraying system is shown for use in spraying the internal surfaces of a hollow container. The system includes a spinning element for dispersion of the coating and a specifically configured metering orifice for preshaping the mass of the coating radially disbursed by the spinning head.

Abstract: A powder applicator for applying powder in a stream to side seams of container bodies. The powder is directed towards an associated nozzle entrained in a carrier gas. However, as the gas entrained powder approaches the nozzle, it passes through a centrifuge section of the supply tube wherein the powder is separated from the gas and is directed against a radially outer portion of a return bend which extends through an arc on the order of 180.degree.. As a result, the powder is directed to the orifice of the nozzle as a continuous dense stream with the gas being in a layered relation with respect to the powder.

Abstract: A coating spraying system is shown for use in spraying the internal surfaces of a hollow container. The system includes a spinning element for dispersion of the coating and a specifically configured metering orifice for preshaping the mass of the coating radially disbursed by the spinning head.

Abstract: An inner burr cutting, inner face cleaning and inner face painting apparatus for long pressure-welded pipes of medium and small diameters comprises a carriage mounted on a base for reciprocal movement, a supporting tube mounted on the carriage to be inserted into a long pressure-welded pipe of a small or medium diameter, a hollow rotary shaft projecting from the supporting tube, an inner burr cutting device fixed to the rotary shaft, a mechanism for centering the inner burr cutting device in the pressure-welded pipe, a spatter crushing brush, an electromagnet device for attracting spatters and inner burr chips, a spattering prevention device, a paint spraying device disposed ahead of the electromagnet device, and a cooling device surrounding the pressure-welded pipe.

Abstract: A method of cleaning and renewing sections of pipe is disclosed wherein the flow of fluid through the pipe is shut off and a scrubbing element is inserted into one end of the pipe. The scrubbing element is advanced through the pipe while at the same time ejecting a cleaning fluid to clean the inside of the pipe section. The inner surface of the section is then scraped to remove materials adhering to the inside of the section which were not previously removed. The removed materials are then flushed from the inside of the section and the section is dried. The inside of the section is then painted by passing a painting device through the section which applies a mixture of paint and hardening liquid to the inside of the pipe. A device is also disclosed for coating the inner surface of a pipe which comprises a casing, an air motor and a cowling operatively connected to the motor for scattering coating liquid fed to the device.

Abstract: Pipes, coated with paraffin, scale or otherwise, are cleaned by internally spraying the pipe with a conic sheet of paraffin solvent or scale remover or other fluid. The reaction of the discharge of the sheet of fluid is the propelling force for advancing the nozzle through the opening. An axial jet of fluid clears the tube in front of the nozzle so that the nozzle can advance through the tube. The conic sheet is formed by a pair of sleeves around a mandrel, the sleeves meeting with correlative conic surfaces.

Abstract: A powder applicator for applying powder to form a side stripe to the interior of can bodies along side seams thereof. The powder applicator includes a device for providing a layering effect on the gas entrained powder so that although the powder is normally carried by the gaseous stream it is directed into an orifice of a nozzle as a dense stream with the carrier gas forming a separate layer. In addition, the applicator forms a seal with the interior of the can body to define a limited sealed area within which the powder may pass. This sealed area contains corona charging pins which are arranged in a longitudinal line so that a maximum charging of the powder may be effected. Also, a diffused gas is directed into the sealed area to prevent the powder from clinging to the side walls of the sealed area and the charging pins.

Abstract: A durable crease is formed in a textile article by applying a flexible casting compound in a preformed crease using a non-rotary applicator in conjunction with a structure for guiding the applicator along the crease. A screw driven piston within the applicator dispenses the compound in response to applicator travel.

Abstract: A machine for treating a pipe interior includes a carriage movable longitudinally through the pipe. A support structure is mounted on the carriage and journalled at the top of this structure is a tubular shaft which is mounted to rotate about its own longitudinal axis with that axis being substantially aligned with the corresponding axis of the pipe. Secured to one end of the tubular shaft is a pair of material-conveying tubular arms which are radially disposed with respect to the shaft. A supply hose leading to a source of pressure-driven fluid material is coupled to the opposite end of the tubular shaft. At the junction of the tubular shaft and arms, there is a deflector member which deflects a particular fluid material flowing through the shaft into the amrs so as to be discharged against the pipe interior as the carriage moves through the pipe.

Abstract: A method of rejoining seals at joints in underground pipelines comprises moving a carriage inside a pipeline beyond a joint to be reformed and rapidly spraying a synthetic polymerizable material to cover the joint from a spraying head mounted on the carriage and displaced relatively slowly with respect thereto. The carriage has means for propelling it on rolling members, for anchoring it in the pipeline, and for moving an arm on which the spraying head is mounted.

Abstract: Drive unit for internal pipeline equipment, wherein the drive motor which drives the drive unit is disposed parallel to the pipe axis instead of transverse to the pipe axis, thereby to occupy a reduced space transverse to the length of the pipe and enabling a drive motor of given size to be used in a drive unit of smaller diameter than would be possible if the drive motor were disposed transverse to the pipe axis. In this way, drive units may be adapted for use in pipes of relatively smaller diameters than has heretofore been possible.

Abstract: Apparatus for supplying fluid for use at the internal surface of a tubular workpiece is provided with a housing mounted in a frame which is movable along the inside of the workpiece. A plurality of rigidly connected, coaxially arranged fluid supply pipes are rotatably mounted in the housing and project from one end of the housing. Fluids are supplied to the housing through a plurality of non-rotatable supply pipes, pass through conduits provided by the interior of the inner rotatable supply pipe and by the annular section clearances between radially adjacent rotatable supply pipes, and are discharged through outlet conduits which are connected respectively to the projecting ends of the individual rotatable fluid supply pipes and which are supported at their ends at the outer end of a radial arm carried by the projecting ends of the rotatable fluid supply pipes.

Abstract: A method and apparatus for correcting imbalance occurring in pneumatic tires during their manufacture. Correction is made by depositing on the inside surface of the tire, at a balance-correcting position, a measured quantity of an uncured, quick-curing, urethane or other liquid elastomer composition which bonds to such surface when cured, and curing the composition in place against the surface. The surface is cleaned in advance, as by washing, scrubbing, and/or abrading, to remove mold release agents and the like and to expose the bare rubber of the tire wall for bonding. The elastomer is desirably deposited in a pool, but may be dispensed in a stream of air or other gas directed toward the deposit. The air reduces the thickness of the pool and feathers its edges and thereby reduces the discontinuity between the deposited material and the tire surface, and promotes bonding.

Abstract: A gunning apparatus for repairing a furnace lining is provided with a spray pipe of non-circular hollow cross-section. The spray pipe of non-circular cross section slidably moves back and forth within a rocking sleeve by a slide mechanism while the spray pipe is non-rotatable relative to the slide mechanism and is rotatable only by the rotation of the slide mechanism, whereby the shooting pipe is manipulated without weakening the rigidity or strength thereof which usually occurs on a conventional circular shooting pipe which requires keyways for rotation thereof.

Abstract: An internal pipe coating apparatus for coating the interior surface of uncoated weld joints in an otherwise internally coated pipeline comprising a frame having wheels at the forward and rear ends thereof, the forward end being oriented or directed towards the uncoated weld joint to be coated, and a drive motor for driving one pair of wheels to move the coating apparatus towards and beyond the uncoated weld joint. A feeler mechanism is located at the rear end of the apparatus. Means are provided to elevate the feeler mechanism into contacting position against the internal surface of the pipe when the drive motor is actuated to move the apparatus in a forward direction. The feeler mechanism comprises a pair of electrically conductive arms adapted to bear against the internal surface of the pipe and to create a completed circuit through the pipe when the feeler arms engage the bare surface of the uncoated weld joint to stop the drive motor.

Abstract: A coating apparatus for coating the interior surface of a relatively long, narrow pipe without any portion of the apparatus contacting the interior of the pipe has been provided, and comprises a mobile vehicle carrying a traveling boom on which is mounted a coating or spraying device for coating the pipe, an adjustment mechanism for moving the boom relative to the vehicle and to align the boom with the pipe, and a driving and supporting mechanism for the boom which drives and also supports the boom as it moves into and out of the relatively long, narrow pipe. In addition, several alternative embodiments of spraying devices for the coating apparatus are disclosed which eliminate or reduce "ghosting" or "shading" problems frequently experienced in coating such pipe.

Abstract: An apparatus for insertion into a relatively long tube or conduit in order to inspect or perform operations on the interior thereof. The apparatus includes a device for performing an operation on the tube as well as a plurality of traction units secured at spaced locations along a connecting lead. The traction units include a gear train and one or more driving means.

Abstract: Apparatus for treating a surface comprising a first frame adapted to be moved across the surface to be treated, a sliding frame mounted on and adapted to slide relatively to the first frame in a direction perpendicular to the surface to be treated, an adjustable frame mounted on and adapted to be adjusted relatively to the sliding frame in a direction perpendicular to the surface to be treated, a tool carrier mounted on the adjustable frame and means for maintaining the sliding frame at substantially a predetermined distance from the surface to be treated.

Abstract: A method and apparatus for sandblasting and coating the interior surface of pipe is provided. A plurality of legs extend outwardly from a central mounting plate and are adjustable in length and angular disposition to accommodate different sized pipe. The mounting plate has a central opening for receiving an elongated lance of either a painting or sandblasting tool. The lance carries a collar which is adapted to abut the mounting plate. A spring-biased locking pin on the mounting plate is received by the collar to releasably lock the two plates together. The method of the invention comprises positioning the aforedescribed device in one end of the pipe and then securing a rope of a length equal to that of the pipe to the device. Next, a lightweight bucket is positioned in front of the device and the rope is coiled inside the bucket. A blast of air is then passed through the lance to move the bucket the length of the pipe.

Abstract: A protective coating applicator tool for application of coating material to the interior of well casing.

Abstract: Apparatus for spraying plastic insulating material on the inner surfaces of the inner hull of a tanker for transporting liquefied gas, e.g. LNG, LPG, etc. The apparatus comprises a vertical column adapted to be mounted in a tank, hinged extendible arm rotatable around and up and down on the column, a carriage carried on the free end of the arm, and spraying apparatus on the carriage.

Abstract: A high pressure fluid delivery system is disclosed in which a source of fluid is connected by a rotating mechanism to an elongated lance or a cleaning head each of which includes one or more outlet nozzles for providing a cleaning jet of fluid. The lance or spray head is rotated by the rotating mechanism to provide substantially complete cleaning of the inside of a tubular member. The rotating mechanism may also be connected between a hose reel and the fluid source to permit the payout of a hose from the reel to the fluid delivery apparatus of the system.

Abstract: A method for coating the inner surface of a metal pipe having an inner diameter of about 1 to 15 cm, which comprises feeding from one end of said metal pipe dry particles of a coating composition into the interior of the metal pipe preheated at a temperature of from a softening point of said coating composition to below a melting point thereof, sucking air at the same time from the other end of the metal pipe so as to form an air stream carrying the particles and flowing in the interior of the pipe at a flow rate of about 4 to 20 m/sec and to allow the particles to deposit on the inner surface of the pipe, and fusing the deposited particles at a reduced pressure of 10 to about 100 mm Hg to form a continuous film on the inner surface of the pipe.

Abstract: A self-running and automatic cleaning-coating machine for working the internal wall of a pipe comprising a travel-driving truck, a motor-placing truck a paint-supplying truck and a working truck wherein these trucks are flexibly coupled to one another and including operation mechanisms which is self-running to a required position and automatically operated to clean and coat the internal wall.

Abstract: A pipe lining apparatus for lining pipe in situ with a fiberglas reinforced plastic. The apparatus includes guide rollers for holding the apparatus centrally of the liner in the pipe as the apparatus is drawn through the pipe. Rotating sprays apply a resin and a resin hardening catalyst to the interior surface of the lining and a rubber tube following the spray heads forces the resin and catalyst into the fiberglas of the liner. Rotating rollers then apply pressure to the liner to force the liner into intimate contact with the pipe being lined. A finish coat of resin mixed with wax covered with the catalyst is then sprayed on the liner.