Inside Separate Hollow Work Patents (Class 118/408)
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Patent number: 4294869Abstract: A method of coating a pipeline comprising the steps of:Welding joints of pipe, end to end to form a continuous pipeline having an entry end and an exit end, winding said pipeline onto a reel, and coating the interior thereof by inserting a pig into the pipeline at one end thereof and affixing a cap at the other end thereof, introducing a coating liquid into the pipeline on the reel, and rotating the pipeline while the pig is maintained in a relatively static position so that the pig smoothly and evenly coats the pipeline as it rotates.Type: GrantFiled: September 26, 1979Date of Patent: October 13, 1981Assignee: Martech International, Inc.Inventor: Christian C. Bassompierre-Sewrin
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Patent number: 4291641Abstract: A liquid dispensing apparatus is arranged to dispense a metered quantity of a liquid adhesive to form a uniform annular bead around an inside peripheral surface of a tube.Type: GrantFiled: December 21, 1979Date of Patent: September 29, 1981Assignee: The Gillette CompanyInventor: Herman P. Nowak
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Patent number: 4289091Abstract: A closed apparatus (10) and method for coating the interior of a tank (12) includes a plurality of interconnected conduits (36, 40, 60, 178), valves (34, 58) and a pump (62) for supplying a coating solution to the tank and draining the tank while containing deleterious fumes. Another plurality of conduits (66, 42), valve (64), and a pump (68) can work therewith to supply a hot curing solution to the tank.Type: GrantFiled: December 13, 1978Date of Patent: September 15, 1981Assignee: Caterpillar Tractor Co.Inventor: Hubert H. Warner
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Patent number: 4279943Abstract: Quantity production of friction nuts prepared for subsequent fusion of thermoplastic resin particles deposited in thread grooves therein, in which the nuts are supported with their axes vertical, a fluid slurry of the particles in a liquid carrier is introduced into the threaded interior of the nuts to fill the threaded opening, including the thread grooves therein, to a predetermined level from the bottom of the nuts. Excess slurry is then drained from the bottom ends of the openings. In order to leave the threads clear of obstruction at the bottom of the nut, the deposited slurry, after partially drying, is removed from the bottom thread convolutions by repeatedly inserting and withdrawing a sponge-like material directly into and out of the lower end of the thread opening, or by strongly agitating a small quantity of water in the lower part of the threaded opening.Type: GrantFiled: January 28, 1980Date of Patent: July 21, 1981Assignee: The Oakland CorporationInventor: Richard B. Wallace
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Patent number: 4273811Abstract: A method whereby slip is applied for providing an enamel coating to interior surfaces of a tank such as a heat exchanger of a hot water boiler, electric water heater and the like fabricated beforehand as by welding. In this method, a larger amount of slip than that actually required for applying the slip coating to the interior surfaces of the tank is introduced into the tank to be applied thereto with the tank being rotated, and the excess slip which has not been applied to the surfaces is forcedly drained from the tank at a rate higher than the rate at which the slip moves relative to the enameled surfaces and which moving rate is determined by the liquid level of the slip within the tank and the size of a discharge port, so that an enamel coating of a desired thickness can be formed on the interior surfaces of the tank. In order to forcedly drain the excess slip from the tank, pneumatic pressure is supplied to the interior of the tank prior to slip application.Type: GrantFiled: September 27, 1977Date of Patent: June 16, 1981Assignee: Hitachi, Ltd.Inventors: Joji Okamoto, Hitoshi Azuma, Katsushi Arai, Takemi Naito, Seiji Kawai, Minoru Goto
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Patent number: 4264647Abstract: A reference electrode is rapidly automatically applied to the interior of tapered vitrified zirconia thimbles for an exhaust gas oxygen sensor. The coating is consistently smooth and predetermined in physical and electrical characteristics. In a specific example, a hollow elastomeric finger is nested within the thimble after dispensing a measured quantity of conductive ink into the thimble bottom. A gas jet applied to the ink from the finger lower end flows the conductive ink throughout a coating cavity below a shoulder in the finger after the ink quantity is substantially all applied to cavity walls, it no longer blocks a cavity vent, and allows the gas to flow freely through the cavity. Gas flow is then discontinued, and the finger withdrawn from the thimble.Type: GrantFiled: October 1, 1979Date of Patent: April 28, 1981Assignee: General Motors CorporationInventor: John Trevorrow
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Patent number: 4253813Abstract: The disclosure is of a method and means for applying a flowable coating material, such as relining, to a tubular stack; e.g. chimney, flue or the like, by means of a distributor moved upwardly into the stack while supplying coating material to an upper surface of the distributor which is configured to cause the material to flow outwardly to the wall to adhere thereto. The apparatus includes selectively added extensions for moving the distributor incrementally through the length of stacks of considerable height, preferably by means of power-operated means; e.g., a fluid-pressure device.Type: GrantFiled: October 9, 1979Date of Patent: March 3, 1981Inventor: Eugene C. Farrell, Jr.
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Patent number: 4249479Abstract: An improved apparatus for supplying fluid such as liquid lubricant or glue to a partially assembled container during assembly thereof. The apparatus employs a flexible tube pump driven by a reciprocatable frame or structure on a container assembling machine via a lever arm acting through a one-way clutch assembly to thereby rotate the tube pump rotor in successive increments of rotation of less than 360.degree.. In one embodiment, apparatus is disclosed in which a liquid dispensing head is reciprocated into and out of engagement with a partially assembled container by means of a reciprocatable frame and actuation of the flexible tube pump is obtained after such engagement in response to additional movement of the frame relative to the liquid dispensing head. In another embodiment, means are disclosed for preventing dispensing of liquid when a container will not be present at the liquid dispensing station.Type: GrantFiled: July 6, 1979Date of Patent: February 10, 1981Assignee: Phillips Petroleum CompanyInventors: William R. Eddy, Frank P. Richards
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Patent number: 4243699Abstract: A method of powder coating the inside of tubular goods, such as oil field pipe and the like, by connecting one end of the pipe to a means for producing a flow of compressible gases therethrough. The other end of the pipe is open to atmospheric pressure. A valve means is connected upstream of the pipe between the inlet end thereof and a container for holding a single charge of plastic powder. The charge of powdered plastic is isolated upstream of the pipe inlet. The charge is of sufficient size to coat the entire inside peripheral wall surface of the pipe with a substantial uniform coating of plastic.Type: GrantFiled: December 20, 1977Date of Patent: January 6, 1981Inventor: Jack E. Gibson
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Patent number: 4197336Abstract: A method comprises diffusion metal coating of pipes carried out in a vacuum chamber which contains metal evaporators. Prior to coating process a metal is fed into the interior of each pipe with the melting temperature thereof being substantially below that of the pipe metal. The metal coating of pipes is effected at a temperature above the melting temperature of the metal disposed within the pipes which are continuously rotating about their axes while axially advancing through the metal evaporator.Type: GrantFiled: December 21, 1978Date of Patent: April 8, 1980Assignee: Ukrainsky Nauchno-Issledovatelsky Institut Spetsialnykh Stalei, Splavov I FerrosplavovInventors: Vladimir I. Savchenko, Anatoly I. Plyshevsky, Evgeny P. Ponomarenko, Grigory D. Duply, Georgy I. Khaustov, Iosif J. Korobochkin, Olga S. Vilyams, Jury K. Belov
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Patent number: 4182262Abstract: A method and apparatus for impregnating a tube of absorbent material in which a mass of flowable material to be absorbed is inserted into the tube by a supply conduit, a vacuum is applied to the tube in spaced relation to the inserted material by a suitable source of vacuum, a flattening device is provided to compress the tube, and the tube is transported by an elongated conveyor through the flattening device commencing at the absorbent material and progressing toward the vacuum to spread the material from side to side of the tube and to extrude the material along the tube.Type: GrantFiled: July 5, 1978Date of Patent: January 8, 1980Assignee: Underground Surveys CorporationInventors: Benjamin A. Everson, Kenneth D. Klotzbier
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Patent number: 4178875Abstract: 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.Type: GrantFiled: November 30, 1977Date of Patent: December 18, 1979Assignee: Siargas -- Societa' Italiana Assistenza Reti Gas S.p.A.Inventor: Armando Moschetti
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Patent number: 4177233Abstract: Method for making a tire whose white sidewall portion is created by, selectively, providing a circumferential groove in the molded tire, buffing the surfaces of the groove, placing an adhesive in the groove, heating the tire about 138.degree. C. to dry the adhesive, bringing the tire temperature to about 100.degree. C. and, while rotating the tire with the groove in a substantially horizontal plane, directing a stream of white polyurethane stock into the groove by means of an applicator which is formed to direct the stock in differing volumes into the bottom of the groove and laterally against its corners and sides; the white sidewall strip so formed has the shape of a concave meniscus.Type: GrantFiled: April 25, 1978Date of Patent: December 4, 1979Assignee: The Firestone Tire & Rubber CompanyInventor: Durward T. Roberts, Jr.
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Patent number: 4135958Abstract: A lining comprising a resin absorbent tube having on the outside a fluid impermeable membrane everted into the passageway to line same using fluid pressure. The resin absorbent material is soaked in resin by trapping a quantity of resin in the lining before it everts in the passageway, and the resin is cured after the lining is everted into the passageway surface, preferably by a curing means following the everting lining along the inside of the passageway.Type: GrantFiled: December 29, 1977Date of Patent: January 23, 1979Assignee: Insituform International Inc.Inventor: Eric Wood
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Patent number: 4125089Abstract: Highly viscous treatment compound is applied to the interior of a pipe at selected locations by a tool passing through the pipe. The tool has axially spaced wall-contacting gaskets defining a pressure chamber therebetween into which the compound is forced. At least one of the gaskets is held in contact with the pipe wall by a support ring to counter the pressure of the compound in the chamber. The ring is withdrawn to permit movement of the tool. Specific apparatus for carrying the compound to and through the tool and for applying the pressure and operating the support means is disclosed.Type: GrantFiled: February 28, 1977Date of Patent: November 14, 1978Inventor: Peter U. Reusser
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Patent number: 4122798Abstract: The interior of a pipe is coated with a uniform thickness of plastic. A fluidized bed of heat-meltable plastic material in particular form is connected to the inlet end of the pipe, while the opposed end of the pipe is made attachable to a source of reduced pressure. A source of compressible fluid is also connected to the inlet end of the pipe. The pipe is preheated and then rotated axially while the compressible fluid flows therethrough. The compressible fluid flowing to the inlet is suddenly terminated while a flow from the fluidized bed is immediately established so that the vacuum at the outlet end of the pipe causes uninterrupted mass flow and pulls a finite pocket of the finely divided plastic into the pipe. The flow of particular plastic material is terminated, while the flow of compressed gas is immediately re-established, thereby pushing the pocket of plastic material into and through the pipe.Type: GrantFiled: May 9, 1977Date of Patent: October 31, 1978Inventor: Jack E. Gibson
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Patent number: 4112617Abstract: A device for pressure-injecting a tree-treating liquid solution (such as an antibiotic, nutrient, or the like) into the trunk of a tree; the device comprising, essentially, an elongated, precisely tapered nozzle fixed on, and projecting from, a hand-manipulated carrier designed for use to forcefully thrust the nozzle--in effective jam-fitting and sealing relation--into a pre-drilled bore, of predetermined diameter, in the trunk of the tree, and to later remove the nozzle from such bore; the carrier having a passage therein leading at one end to communication with the nozzle, and means being provided to couple such passage at the other end with a source of the liquid solution delivered in metered quantity under pressure.Type: GrantFiled: April 1, 1977Date of Patent: September 12, 1978Inventor: Billy Joe Purviance
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Patent number: 4108279Abstract: A dispensing device is pulled through a conduit while a coating material, such as a lubricant, is forcibly dispensed from the dispensing device and spread along the interior surface of the conduit. The dispensing device has an elongate tubular body with a hollow interior portion adapted for containing a supply of the coating material and having an opening in the body through which the coating material is dispensed. An elongate connector extends axially into the hollow interior of the elongate body through the leading end thereof and is connected to a piston located inside the hollow body. When the dispensing device encounters a frictional resistance as it is pulled through the conduit, the piston is pulled forwardly in the hollow body to forcibly dispense coating material from the dispenser and the dispenser thereafter spreads the coating material along the wall of the conduit.Type: GrantFiled: October 20, 1976Date of Patent: August 22, 1978Assignee: Thomas Industries of Tennessee, Inc.Inventor: William B. Marcell
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Patent number: 4079693Abstract: An applicator for applying a layer of coating material around the circumference of an internal surface of a bore within a member, such as on the internal surface of an elongated socket. The applicator includes a chamber which has an elongated portion which can be inserted within the bore of the member to be coated. This chamber is then filled with the coating material to be applied. When the member to be coated is arranged on the elongated portion of the chamber, such arrangement is sensed and serves to actuate a mechanism for providing an opening within the elongated portion. Coating material then passes through this opening into contact with the internal surface of the member.Type: GrantFiled: January 5, 1976Date of Patent: March 21, 1978Assignee: Loctite CorporationInventor: Robert John Cotter
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Patent number: 4072128Abstract: The device comprises a body member having a liquid reservoir therein, a manually operable pump in communication with the reservoir, and an applicator post mounted on the pump. A metered amount of liquid is applied to the inner surface of a portion of a tubular member by manually placing the tubular member portion over the applicator post and then pressing inwardly of the device.Type: GrantFiled: January 28, 1976Date of Patent: February 7, 1978Assignee: Baxter Travenol Laboratories, Inc.Inventor: Warren P. Frederick
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Patent number: 4071641Abstract: A method and an apparatus for lining the interior surface of metal tubing with a protective coating made from either thermoplastic or thermosetting resins. The process is effectuated by the insertion of said resins into the tubing in the form of a knitted or braided mesh, smooth surfaced rods, latticed rods, or rods with perforations; the formation of a vacuum within said tube, and the rotation and heating of the outer surfaces of the tubing.Type: GrantFiled: July 7, 1976Date of Patent: January 31, 1978Assignee: Daiwa Kogyo Co., Ltd.Inventor: Sadao Susai
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Patent number: 4047497Abstract: Apparatus is disclosed for impregnating a wall or the like with damp-proofing fluid. The apparatus comprises a conduit through which the fluid passes and carrying a sealing element designed to seal against the wall automatically under the pressure of the damp-proof fluid. Generally the sealing element comprises a grommet which is deformed into sealing contact with the wall, the deformation being effected either by the direct action of the damp-proofing fluid on the grommet or through an intermediate member such as a piston in a cylinder carried on the conduit.Type: GrantFiled: January 26, 1976Date of Patent: September 13, 1977Inventor: Johannes Hermanus Grobler
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Patent number: 4036170Abstract: In order to form an adherent coating of zinc stearate on the bore surfaces of a plurality of tubes grouped in parallel relation, an alkali cleaner solution is circulated therethrough from a reservoir tank and then returned to the tank by a flow of purge air which is thereafter vented to the atmosphere to remove any alkali residue from the system. A phosphate solution, an alkali neutralizer solution, and a stearate solution are, in turn, similarly circulated and returned to their respective reservoir tanks. Each circulation is followed by a corresponding circulation of hot rinse water which is also returned to its reservoir tank by the same air purge technique.Type: GrantFiled: October 10, 1975Date of Patent: July 19, 1977Assignee: The United States GovernmentInventor: Harold Goodheim
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Patent number: 4001469Abstract: A method of and apparatus for sealing porous material defining a recess therein by placing sealing liquid in the recess, inserting a tubular means therein, pressure sealing said means with respect to the recess and forcing said sealing liquid into the pores by a gaseous pressure applied through said tubular means.Type: GrantFiled: May 27, 1975Date of Patent: January 4, 1977Assignee: Great Lakes Carbon CorporationInventor: Jay A. Harvey
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Patent number: 3977360Abstract: A uniform, continuous layer of a drag reduction material is applied to the internal wall of a conduit by injecting into the conduit the material in liquid form via an apparatus capable of applying the liquid to the internal conduit wall. The apparatus supplies the liquid to the wall at a rate proportional to the rate of travel of the apparatus through the conduit. The drag reduction material may be injected into the conduit either prior to the injection of the apparatus or may be contained in a chamber within the apparatus.Type: GrantFiled: December 23, 1974Date of Patent: August 31, 1976Assignee: Marathon Oil CompanyInventor: Louis C. Mihaly
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Patent number: 3974306Abstract: 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.Type: GrantFiled: October 4, 1973Date of Patent: August 10, 1976Assignee: Kansai Paint Company, Ltd.Inventors: Keizo Inamura, Tadayoshi Tatsuno, Toshio Okoshi
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Patent number: 3956533Abstract: Liquid sealant is applied to threaded parts that are to be connected by screwing or fitting together in a gas- or liquid-tight manner in a uniformly thick coating and the coating allowed to harden, so that the parts may be stored indefinitely before use. The coating is applied by an application tool which has a similar threaded shape to the part to which the coating is to be applied and which is provided with outflow openings in its surface.Type: GrantFiled: September 26, 1973Date of Patent: May 11, 1976Assignee: Georg Fischer AktiengesellschaftInventors: Gunter Weber, Reinhold Speck, Stefan Forberger, Josef Jusko