Advancing Subterranean Length Of Pipe Or Cable Patents (Class 405/184)
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Patent number: 6969215Abstract: A pipeline is constructed in steep terrain by digging a ditch on the incline, assembling pipe joints together adjacent a top of the incline and then lowering the assembled pipe joints down the incline through the ditch. A wheeled assembly at the lower end of the pipeline carries much of the load and rolls down the ditch as allowed by winch equipment at the top of the incline. Bearing supports are installed periodically in the ditch to support the pipeline, the supports being of a softer material than coatings on the pipe.Type: GrantFiled: March 11, 2004Date of Patent: November 29, 2005Inventor: Kenneth R. Duncan
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Patent number: 6953306Abstract: A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, installing a back reamer to the drill string and using a directional drilling machine to pull back the reamer and install a product pipe behind the reamer. A pilot tube is installed on line and on grade by utilizing the guidance system of a microtunneling apparatus to install a pilot tubes between jacking and target shafts. A drill string is installed to displace the pilot tubes and a back reamer is attached to the drill string with a product pipe attached to the reamer. The reamer may be pulled using any suitable pulling device such as a directional drilling machine.Type: GrantFiled: January 27, 2004Date of Patent: October 11, 2005Assignee: Insituform (Netherlands) B.V.Inventor: John Hamilton McGillis
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Patent number: 6953305Abstract: A bundle of tubes or pipes is arranged without trenches according to a fluid-assisted drilling method. A bore channel is made in a first boring step and the bore channel is widened when the bore/flushing head is removed therefrom, the bundle of tubes being drawn into the bore channel. The bundle is composed of individual tubes and flanges arranged lengthwise at a distance from and used as spacers for the tubes. A method is also described, wherein a rotational decoupling device prevents the rotational movement of the bore/flushing head produced during the removal process from being transmitted to the bundle of tubes. The bundle of tubes are supported by stabilizing devices inside the bore channel in the same spatial position as that of the tubes in relation to each other and the surrounding environment and are drawn through the bore channel.Type: GrantFiled: January 29, 2002Date of Patent: October 11, 2005Assignee: Stadtwerke Schwerte GmbHInventors: Martin John, Klaus Rous
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Patent number: 6868913Abstract: An apparatus and method of installing a casing string in a borehole, the apparatus comprising a propulsion system movable through the borehole; the propulsion system comprising an attachment member; and the attachment member being engagable with the casing string causing the casing string to move with the propulsion system through the borehole. The apparatus further including a conduit for circulating fluids through the propulsion system to provide the power to move the propulsion system. The propulsion system may also be disposable.Type: GrantFiled: October 1, 2002Date of Patent: March 22, 2005Assignee: Halliburton Energy Services, Inc.Inventors: William L. Vidrine, Tommy Grigsby, Ian Phillips
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Patent number: 6854932Abstract: A cable pulling apparatus for pulling a work load attached to a cable, including at least one cable-pulling device for engaging the cable. The cable-pulling device or devices each includes at least one cable-pulling member fitted with a cable-gripping element for pulling the cable and the workload.Type: GrantFiled: December 12, 2001Date of Patent: February 15, 2005Inventor: Samuel W. Putnam
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Patent number: 6824329Abstract: For installing a cable duct around a cable buried in the ground, the duct is propelled by a propelling device formed of a solenoid and a corresponding core member of a magnetic material, and a duct transporting device. The core member is provided with a coupling which couples to a free end of the cable. The solenoid is driven by a current so as to maintain, during operation, the free end of the longitudinal member, coupled to the core member, in a fixed position with respect to the transporting device. The propelling operation is supported by feeding a fluid under pressure through the duct, with the foremost end of the duct being provided with a spouting member. Suitable design of the core member in combination with a suitably varying current for driving the solenoid allows increased dynamic propelling operation and consequently improved performance.Type: GrantFiled: April 11, 2003Date of Patent: November 30, 2004Assignee: Koninklijke KPN N.V.Inventors: Cornelis Casparus Van Bijsterveld, Gérard Plumettaz
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Publication number: 20040213636Abstract: The present invention relates to ground drainage apparatus comprising a ground anchor (13) and a length of conduit (10) providing a drainage channel for water. The length of conduit (10) is secured to the ground anchor (13) in such a way that when the ground anchor (13) is driven into the ground then the length of conduit (10) is dragged through a passage in the ground formed by the ground anchor (130 with the result that when the ground anchor is installed at a desired depth then the length of conduit (10) provides a drainage channel in the ground.Type: ApplicationFiled: June 16, 2003Publication date: October 28, 2004Inventors: Michael Hamilton Russell, Andrew David Hawes
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Patent number: 6808030Abstract: The invention concerns a drilling apparatus for enlarging a bore in the ground, comprising a drilling head (6) having a drilling bit (12); a percussion piston (14) which is driven by a drive medium (9) and which impacts against the drilling bit (12), and a hollow drill string (8) to which the drilling head (6) is fixed and through the cavity of which the drive medium (9) is passed to the percussion piston (14). The drill string (8) is surrounded by a hollow outer string (3) enclosing an annular space which surrounds the drill string (8) and through which the drive medium (9) is passed out of the borehole. The invention further concerns a method of enlarging an existing borehole, using a drilling head of that kind.Type: GrantFiled: September 23, 2002Date of Patent: October 26, 2004Inventor: Günter W. Klemm
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Publication number: 20040190996Abstract: A method for placing a tube (11) made of plastic material within a conduit (12) in operation, comprising the stages of inundating the conduit with a liquid, then insert the tube with its initial end placed in the inundated portion, so that it slides along the conduit, while the hydrostatic impulse reduces the sliding effort. Equipment for placement of a tube (11) made of plastic material within a conduit (12) in operation, comprising a pair of collectors (15, 115), each one counting on a connection (16, 116) for the fixation of sealing to a respective end of a portion of conduit (12). Each collector comprises a fragment of tube of entry/exit (17, 117) disposed inclined with an obtuse angle in relation to the axle of the respective end of the conduit, in order to stimulate and allow the passage of the tube in the conduit, and the nozzle (18, 118) of the fragment of the tube being at high above the conduit.Type: ApplicationFiled: February 26, 2004Publication date: September 30, 2004Applicant: Pranha 50 LtdaInventor: Edgardo Chizzoli
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Publication number: 20040184886Abstract: Accordingly the invention resides in a method of selectively repairing the lining of a lined pipeline, said method comprising utilisation of a conveyance adapted to be receivable within the pipeline, said conveyance being adapted to be able to travel through the pipeline, said method further comprising introducing said conveyance into the pipeline, said conveyance comprising an inspection means, an excising means, a debris removal means and an application means, said method further comprising an identification step comprising causing the conveyance to travel along the length of the pipeline, inspecting the surface of the lining and identifying and locating damaged portions of the lining at locations along the pipeline, said method further comprising an excising step comprising moving said conveyance means along the pipeline and at the locations identified by the inspection excising the damaged portions of the lining from the pipeline, said method further comprising a debris removal step comprising causing saiType: ApplicationFiled: January 29, 2004Publication date: September 23, 2004Applicant: WATER CORPORATIONInventors: Mark Berkeley Fitzhardinge, Stephen Reginald Brown, William Alan Hodgkinson
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Publication number: 20040184885Abstract: A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, installing a back reamer to the drill string and using a directional drilling machine to pull back the reamer and install a product pipe behind the reamer. A pilot tube is installed on line and on grade by utilizing the guidance system of a microtunneling apparatus to install a pilot tubes between jacking and target shafts. A drill string is installed to displace the pilot tubes and a back reamer is attached to the drill string with a product pipe attached to the reamer. The reamer may be pulled using any suitable pulling device such as a directional drilling machine.Type: ApplicationFiled: January 27, 2004Publication date: September 23, 2004Inventor: John Hamilton McGillis
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Patent number: 6792820Abstract: A method of replacing an existing underground pipe, especially a sanitary sewer line, uses a boring machine that advances a drill string of hollow rods through the existing pipe.Type: GrantFiled: March 29, 2002Date of Patent: September 21, 2004Assignee: Earth Tool Company, L.L.C.Inventors: Steven W. Wentworth, Payce D. Reynolds
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Patent number: 6786677Abstract: A canal or pipe system and process for rehabilitation of a canal or pipe system and for installation of a cable or empty tube into a canal or pipe system as well as device for installation of a cable or empty tube. For rehabilitation of a canal or pipe system (AR) an outer casing (AL1) is inserted. Subsequently, an inner casing (IL1) with help by distancing elements (AH) is inserted, so that a ring gap (RS) between the inner and outer casings (IL1, AL1) is created. A cable (OC1) or empty tube (LR) to be installed is inserted together with the inner casing (IL1) in such a way, that the cable (OC1) or empty tube (LR) comes to rest in the ring gap (RS). For rehabilitation of the canal or pipe system, where a cable (OC1) or empty tube (LR) is already installed at an inner wall (IW), only the inner casing (IL1) will be inserted into the canal or pipe system (AR), so that the ring gap (RS) is created between the inner wall (IW) and the casing (IL1).Type: GrantFiled: October 10, 2002Date of Patent: September 7, 2004Assignee: CCS Technology, Inc.Inventors: Lothar Finzel, Hans-Jurgen Konig, Klaus D. Schmager
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Publication number: 20040170476Abstract: When a glass fiber cable emerging from a main channel (1) is guided into a domestic channel line (2), in order to prevent this glass fiber cable from unacceptably having an excessively small radius of curvature in the direction-changing area (6), and thus being damaged, and in order to ensure that the glass fiber cable (3) is in the correct position, this glass fiber cable (3) is guided in a rigid guide tube (7) whose longitudinal axis runs essentially along a cylindrical envelope surface in its central section (7′″). The rigid guide tube (7) is fixed in a pipe connecting stub (10) which can be widened elastically and thus, after insertion into the domestic channel line (2), rests on the wall thereof in a stressed manner, and is fixed in its position. That end of the guide tube (7) which projects into the domestic channel line (2) is connected via a sleeve (8) to a flexible pipe, tube (5) or the like.Type: ApplicationFiled: December 29, 2003Publication date: September 2, 2004Inventors: Helmut Kadrnoska, Gerhard Reiss, Bernhard Ogris
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Publication number: 20040165957Abstract: A fiber optic installation structure and method therefor includes a duct having an inner tube, at least one optical waveguide, and a jacket and is disposed within a channel of a paved surface. The jacket generally surrounds the inner tube. When the duct is disposed within a channel defined by a paved surface, a friction fit is created between the duct and the channel for holding the duct in place. Thereafter, a filling material is used for overlying the duct and at least partially filling the channel. In other embodiments, the jacket is capable of being compressed when installed into the channel. The duct may include an armor layer disposed between the inner tube and the jacket for protecting the inner tube. Moreover, at least one optical waveguide may be disposed within at least a portion of the inner tube of the duct and may be introduced after the duct is installed in the paved surface.Type: ApplicationFiled: November 26, 2003Publication date: August 26, 2004Inventors: Jorge R. Serrano, Lothar Finzel
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Patent number: 6773205Abstract: An apparatus for and method of installing a cable in ducting from a location intermediate the length of the ducting. The cable is provided in a coil at the location and some cable is passed from one end of the coil into a first portion of the ducting extending from the location to one end of the ducting. The remaining cable is passed from the other end of the coil into a second portion of the ducting extending from the location to the other end of the ducting.Type: GrantFiled: October 4, 2002Date of Patent: August 10, 2004Assignee: Pirelli General plcInventor: Ralph Sutehall
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Patent number: 6736156Abstract: A method of introducing a fiber optic conduit into a pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first drilling nipple attached to the pressurized gas pipeline. Tools are deployed within a first pressure lock housing attached to the first drilling nipple by using a first manipulator located in the first air lock housing. The duct rod is advanced within pressurized gas pipeline by a driving mechanism, until a second drilling nipple is reached. The translating member is attached to a fiber optic conduit. The duct rod and fiber optic conduit are then pulled back or pulled forward through the pressurized gas pipeline by the driving mechanism. A conduit is installed in a gas service line, to line the cable or conduit in a natural gas main pipeline to a telecommunications panel in a building.Type: GrantFiled: June 7, 2001Date of Patent: May 18, 2004Assignee: Sempra Fiber LinksInventors: Scott A. Beals, Ronald D. Hammer
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Patent number: 6732816Abstract: The present invention is an improved method of installing a flowline below the surface. The method includes the steps of establishing first and second sight relief holes along a linear path, positioning a directional drilling machine on the surface, boring a first portion of a pilot hole from the surface to the first sight relief hole, determining the elevation of the boring tool and adjusting the boring tool to the desired depth, boring a second portion of the pilot hole to the second relief hole, and determining the elevation of the boring tool and adjusting the tool to the desired depth. In another aspect of the invention, a method for directionally boring a flowline is provided.Type: GrantFiled: March 19, 2001Date of Patent: May 11, 2004Assignee: Lattice Intellectual Property LimitedInventor: Ted R. Dimitroff
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Publication number: 20040081516Abstract: The inventions concerns to a bundle (1) of tubes for the laying of tubes (2) by means of a trenchless laying according to the fluid-assisted drilling method, in which in a first drilling process a drilling channel (9) is generated and during the retracting movement of the boring-flushing head (5) this drilling channel (9) is expanded and in this process the bundle (1) of tubes is retracted into the drilling channel (9). Such a bundle (1) of tubes stands out by that the bundle (1) of tubes is formed by a number of single tubes (2) which are ordered in distance to each other by means of flanges (3) distantly arranged at the tubes (2) in lengthwise direction (15) of the tubes (2).Type: ApplicationFiled: July 29, 2003Publication date: April 29, 2004Inventors: Martin John, Klaus Rous
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Publication number: 20040037649Abstract: Method for installing a duct, a longitudinal member being present along the section over which the duct is to be installed, the longitudinal element present being utilised as a guide for the duct to be installed and the duct being propelled, a tape-shaped element being formed around the existing longitudinal element during the propulsion into a duct closed all around, by coupling to one another coupling means present at the longitudinal edges of the tape-shaped element.Type: ApplicationFiled: September 22, 2003Publication date: February 26, 2004Inventors: Cornelis Casparus Van Bijsterveld, Frank Martin Kerling
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Patent number: 6691728Abstract: A method of routing a new pipe duct into an existing pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first fitting attached to the pressurized gas pipeline. The translating member, such as a duct rod, is advanced within the pressurized gas pipeline by a driving mechanism, until it reaches second fitting. The translating member is attached to a pipe inner duct. The duct rod and pipe inner duct are then pulled back through the pressurized gas pipeline by the driving mechanism.Type: GrantFiled: May 29, 2002Date of Patent: February 17, 2004Assignee: Sempra Fiber LinksInventors: Scott A. Beals, Ronald D. Hammer, Robert E. Evans, Kevin Leeds
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Patent number: 6691734Abstract: A method, system and tools for introducing a fiber optic conduit into a pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first fitting attached to the pressurized gas pipeline. Tools are deployed within a first pressure lock housing attached to the first fitting by using a first manipulator located in the first air lock housing. The translating member, such as a duct rod, is advanced within the pressurized gas pipeline by a driving mechanism until a second drilling fitting is reached. The translating member is attached to a fiber optic conduit or cable. The duct rod and fiber optic conduit are then pulled back through the pressurized gas pipeline. Extractor tools extending through seals in the pressure lock housing engage with and withdraw the duct rod. Alternatively, first and second duct rods may be pushed towards each other from the first and second fittings. End elements on the duct rods engage each other.Type: GrantFiled: May 29, 2002Date of Patent: February 17, 2004Assignee: Sempra Fiber LinksInventors: Scott A. Beals, Ronald D. Hammer, Robert E. Evans, Kevin Leeds
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Publication number: 20040028476Abstract: A system and method for automatically drilling and backreaming a horizontal borehole underground. The system includes a horizontal drilling machine and a machine control system for operating the drilling machine. The machine control system has sensors and control circuits for monitoring and automatically controlling the functions of the drilling machine. The machine control system manages the power consumption of the drilling machine, the fluid dispensed during drilling and backreaming, the lengthening and shortening of the drill string, the tracking and recording of progress along a selected bore path, and the guiding of the downhole tool along the selected bore path. In a drilling operation the method involves identifying a selected bore path and automatically guiding the downhole tool along the selected bore path. In a backreaming operation the method involves connecting a backreamer and a utility line to the drill string and automatically pulling the utility line back through the borehole.Type: ApplicationFiled: July 12, 2003Publication date: February 12, 2004Applicant: The Charles Machine Works, Inc.Inventors: David R. Payne, Gerald A. Stangl, Norman E. Stevens, Michael F. Gard
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Patent number: 6681795Abstract: A method of introducing a fiber optic conduit into a pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first drilling fitting (18) (8, 70, 250, 300) attached to the pressurized gas pipeline. Tools are deployed within a first pressure lock housing (30) attached to the first drilling fitting by using a first manipulator (34) located in the first air lock housing. The duct rod is advanced within pressurized gas pipeline by a driving mechanism (60), until a second drilling fitting (80) is reached. The translating member is attached to a fiber optic conduit or cable. The duct rod and fiber optic conduit are then pulled back through the pressurized gas pipeline by the driving mechanism. A conduit or cable is installed in a gas service line, to provide an optical fiber between an optical fiber trunk line or ring and building.Type: GrantFiled: October 9, 2001Date of Patent: January 27, 2004Assignee: Sempra Fiber LinksInventors: Scott A. Beals, Ronald D. Hammer, Robert E. Evans
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Patent number: 6682264Abstract: A method for the trenchless installation of new underground pipe accurately on line and on grade by microtunneling to install a pilot tube, installing a drill string along the pilot pipe line using a directional drilling machine, installing a back reamer to the drill string and using a directional drilling machine to pull back the reamer and install a product pipe behind the reamer. A pilot tube is installed on line and on grade by utilizing the guidance system of a microtunneling apparatus to install a pilot tubes between jacking and target shafts. A drill string is installed to displace the pilot tubes and a back reamer is attached to the drill string with a product pipe attached to the reamer. The reamer may be pulled using any suitable pulling device such as a directional drilling machine.Type: GrantFiled: February 26, 2002Date of Patent: January 27, 2004Assignee: INA Acquisition Corp.Inventor: John Hamilton McGillis
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Patent number: 6672802Abstract: A vertical pull apparatus for converting a vertical pulling motion to a horizontal pulling motion, which vertical pull apparatus typically includes a support for positioning in a generally vertical position. A cable-engaging mechanism is provided on the support, which cable-engaging mechanism engages a cable and defines a generally vertical cable segment and a generally horizontal cable segment in the cable. A first cable-gripping element and a second cable-gripping element on the support alternately and repeatedly grip and release the vertical cable segment of the cable. At least one of the cable-gripping elements is adapted for gripping and pulling the vertical cable segment of the cable along a vertical axis, such that the horizontal cable segment is pulled along a horizontal axis.Type: GrantFiled: September 4, 2002Date of Patent: January 6, 2004Inventor: Samuel W. Putnam
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Patent number: 6659198Abstract: The backreamer assembly for enlarging shallow depth boreholes in an earthen environment includes a substantially conical cutting surface. Contained within the substantially conical cutting surface is a speed reduction, torque increasing gearbox which transmits rotational power from a drive motor to the substantially conical cutting surface.Type: GrantFiled: June 20, 2002Date of Patent: December 9, 2003Assignee: S & S TrustInventor: David Camp
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Patent number: 6652190Abstract: A method and apparatus for installing a pipe casing underground without a trench for distances up to 400 feet with pipe casing up to 168 inches in diameter. The system uses a modified high energy piling hammer to mobilize the energy to drive the casings or tubings that make up the instant tunnel. An example of a piling hammer used in the present invention is the IHC Hydrohammer line of models in between the S-90 and S-280. Specific models planned to be used in this invention, depending on diameter and length requirements and type of soil in the planned alignment, are the Models S-90, S-150, S-280, S-400 and S-500. The present invention's Hydrohammers are needed to be held against the casing pipe to be driven with a force equal to the reactional force of the hammer during recharging of the hammer's system. A special helmet and cutting head increase operational capabilities.Type: GrantFiled: November 8, 2002Date of Patent: November 25, 2003Inventor: Robert J. Verkyk
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Patent number: 6641331Abstract: Method for installing a duct (2) in the ground, whereby a longitudinal element (1) is already present in the ground near the route along which the duct (2) is to be installed, whereby the existing longitudinal element (1) is used as a guide for the duct (2) to be installed and the duct (2) is pushed into the ground with the aid of a fluid under pressure fed through the duct (2), whereby the duct (2) to be installed is coupled to the existing longitudinal element (1) by at least one divisible coupling piece (3) and whereby the coupling element is advanced along the existing longitudinal element (1) The invention also provides a coupling piece (3) for guiding the duct (2) along the longitudinal element (1).Type: GrantFiled: August 26, 2002Date of Patent: November 4, 2003Assignee: Koninklijke KPN N.V.Inventor: Cornelis Casparus Van Bijsterveld
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Publication number: 20030198518Abstract: For installing a cable-duct (1) around a cable (3) buried in the ground the duct is propelled by propelling means (17) which comprise solenoid means (49) and a corresponding core member (53) of a magnetic material, and duct transporting means (47). The core member is provided with coupling means (55) for coupling to the free end of the cable, and the solenoid means are driven by a current as to maintain during operation the free end of the longitudinal member coupled to the core member in a fixed position with respect to the transporting means. The propelling operation is supported by feeding a fluid under pressure through the duct, the foremost end of the duct being provided with a spouting member. Suitable design of the core member in combination with a suitably varying current for driving the solenoid allow more dynamical propelling operation, and consequently better performance.Type: ApplicationFiled: April 11, 2003Publication date: October 23, 2003Applicant: Koninklijke KPN N.V.Inventors: Cornelis Casparus Van Bijsterveld, Gerard Plumettaz
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Patent number: 6616378Abstract: A device (6) for attachment to a pipe (7) to be installed in the ground has load cells (17) for detecting a pulling force applied to the pipe (7), as the latter is pulled through the ground, an inclinometer (18), for detecting the inclination of the device (6), and a pressure transducer (20) for detecting the pressure surrounding the device. Data representative of the pulling force, inclination and pressure is stored in the device (6) and protected against unauthorised access by a security code or procedure, so that a verifiable record of the pipe installation process is available.Type: GrantFiled: February 27, 2001Date of Patent: September 9, 2003Assignee: Staploe LimitedInventors: Simon Charles Coote Turner, Martin David Warner
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Publication number: 20030147700Abstract: The basic features of the invention include a pipe parting mole, a length of cable that is engagable to the mole, a cable pulling device and a cable pulling device engagement means that provides a mounting structure for the cable pulling device. The cable pulling device engagement means generally includes a reaction plate and a structure for removably engaging the cable pulling device therewithin. A cable pulling frame may be advantageously used to facilitate the removal of the cable from a relatively small hole that is created at the pulling end of the pipe.Type: ApplicationFiled: January 6, 2003Publication date: August 7, 2003Inventors: Robert Ward Carter, Robert Williams Carter
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Publication number: 20030143033Abstract: A process for providing a power grid distribution system using the interstate highway system and larger state highway systems for mass distribution of energy products including petroleum, gas, electricity, gasoline and fiber optics comprises the steps of placing energy product supply lines below the ground surface of median and adjacent right-of-way areas of interstate highways Each energy product supply line is connected to a source of the energy product. An outlet conduit is connected to lines each supply conduit and these outlet lines are located below the surface of the ground The outlet lines interconnect the supply lines with distributors and end users of the energy products.Type: ApplicationFiled: January 28, 2002Publication date: July 31, 2003Inventor: William P. Cramer
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Patent number: 6588982Abstract: In a method of laying a cable, or a pipe for the subsequent introduction of a cable, in a fresh-water conduit, the surface of the cable or pipe is cleaned during the laying process immediately before entering the fresh-water conduit.Type: GrantFiled: January 30, 2002Date of Patent: July 8, 2003Assignee: AlcatelInventors: Klaus Nothofer, Hans-Detlef Leppert, Hans-Jürgen Lysson, Wolfgang Teschner
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Patent number: 6585453Abstract: An apparatus for replacing underground pipe. The apparatus has a fracturing or cutting element to fracture or cut underground pipe as it is drawn through the underground pipe. The apparatus additionally has an expanding element to expand the cavity of the underground pipe and a pipe guide to guide replacement pipe into the cavity of the underground pipe. The apparatus incorporates a longitudinal bore running the length thereof. A pulling line is passed through the longitudinal bore and connected to a block. The pulling line and block are operative to draw the apparatus through the underground pipe. A retaining line is connected to the block and trails the apparatus through the underground pipe. The retaining line permits retrieval of the apparatus in the event of an obstruction of the underground pipe. In addition, a plate connected to the retaining line is used to push replacement pipe into the cavity of the underground pipe behind the apparatus.Type: GrantFiled: July 19, 2001Date of Patent: July 1, 2003Inventor: Gerald M. Robinson
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Patent number: 6581265Abstract: An apparatus for the repair or maintenance of a vehicle is provided which facilitates the removal of a wheel, wheel rim, brake rotor, brake drum or the like, when these become seized or fused onto the wheel hub of the vehicle. The wheel pulling apparatus provides a pull plate to pull on, for example, a brake drum, and a push plate which acts to directly or indirectly push on the wheel studs of the vehicle. A simple, easy to use wheel pulling apparatus is provided.Type: GrantFiled: August 27, 2001Date of Patent: June 24, 2003Inventor: Eli Sawaya
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Patent number: 6565285Abstract: For laying synthetic underground piping (1) a ground channel (2) is first bored and the piping (1) is introduced into the ground channel (2). To facilitate laying an underground pipe length particularly effectively, the pipe length (1) comprising a hardening synthetic mass is manufactured at the same time as it is introduced into the ground channel (2) by the prepared synthetic mass being formed continuously inside the ground channel (2) as a run of piping (3) and left to harden.Type: GrantFiled: February 26, 2001Date of Patent: May 20, 2003Inventor: Wolfgang Landrichter
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Patent number: 6561280Abstract: A new method and apparatus have been developed which inserts and withdraws tubing from pipes without bending or kinking the tubing. Beneficially, the new method and apparatus may be employed to insert and withdraw tubing to depths greater than ever possible before. The method involves using a thruster pig to provide force to inject the tubing, and skate apparatuses to reduce coiling and friction of the tube. Advantageously, the apparatus is portable, easily handled, and adaptable to handle tubing of differing diameters.Type: GrantFiled: February 5, 2002Date of Patent: May 13, 2003Inventors: Benton F. Baugh, James R. Crawford
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Patent number: 6561732Abstract: A driving pipe and method for the construction of an essentially horizontal pipeline, whose wall is made at least primarily of concrete polymer. At least sections of the wall of the concrete polymer pipe are made of a liquid-permeable filter material consisting of polymer-bound, gravel-like particles.Type: GrantFiled: August 25, 2000Date of Patent: May 13, 2003Assignee: Meyer Rohr & Schacht GmbHInventors: Thomas D. Bloomfield, Michael Welzel
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Patent number: 6554539Abstract: A process for the laying of high pressure fluid pipelines is described, in which the existing fluid pipelines of different nominal pressure stages are used in order to provide a new assembled high pressure fluid pipeline of a standardized and higher nominal pressure stage. This is achieved by inserting a woven fabric hose of a correspondingly higher nominal pressure stage into the existing old fluid pipeline according to the woven fabric hose relining process.Type: GrantFiled: February 8, 2001Date of Patent: April 29, 2003Assignees: Radlinger Maschinen-und Anlagenbau GmbH, VNG-Verbuhdbetz Gas AGInventors: Josef Rädlinger, Walter Weiss, Frank Heinze, Frank-Michael Kopping
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Patent number: 6551028Abstract: A tool for replacing pipe, in which the existing underground pipe is fractured or cut into fragments, which are forced inward so that they pass through the tool. The tool has breaking members that extend radially outwards and backwards from a nose such that, when the tool is pulled through an existing underground pipe, the breaking members are forced against the inside of the existing underground pipe, thereby breaking it. The fragments are forced inwards by the leading edge of the cylindrical base of the tool and pass through a bore in the cylindrical base. In this way the replacement of existing underground pipe is made possible without expanding the cavity of the existing underground pipe. The tool may additionally include a pipe guide for guiding replacement pipe into place behind the tool as the tool is pulled through the existing underground pipe. The fragments pass through the pipe guide and into the replacement pipe.Type: GrantFiled: September 17, 2001Date of Patent: April 22, 2003Inventor: Gerald M. Robinson
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Patent number: 6536463Abstract: A method of introducing a fiber optic conduit into a pressurized gas pipeline includes the step of introducing a translating member into the pressurized gas pipeline via an entry port in a first drilling nipple attached to the pressurized gas pipeline. Tools are deployed within a first pressure lock housing attached to the first drilling nipple by using a first manipulator located in the first air lock housing. The duct rod is advanced within pressurized gas pipeline by a driving mechanism, until a second drilling nipple is reached. The translating member is attached to a fiber optic conduit. The duct rod and fiber optic conduit are then pulled back or pulled forward through the pressurized gas pipeline by the driving mechanism.Type: GrantFiled: October 10, 2000Date of Patent: March 25, 2003Assignee: Sempra Fiber LinksInventors: Scott A. Beals, Robert E. Evans
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Publication number: 20030012606Abstract: Method for installing a duct in the ground, whereby a longitudinal organ is already present in the ground near the route along which the duct is to be installed, whereby the existing longitudinal element is used as a guide for the duct to be installed and the duct is pushed into the ground with the aid of a fluid under pressure fed through the duct, whereby the duct to be installed is coupled to the existing longitudinal element by means of at least one divisible coupling piece and whereby the coupling element is advanced along the existing longitudinal element. The invention also provides a coupling piece for guiding the duct along the longitudinal element.Type: ApplicationFiled: August 26, 2002Publication date: January 16, 2003Inventor: Cornelius Casparus Van Bijsterveld
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Patent number: 6499912Abstract: A tool for replacing existing plastic water service pipes that are buried underground. The proposed tool is pulled through an existing pipe by a stranded steel cable. The internal wall of the pipe is scored by a single cutting blade incorporated into the tool. The pipe is split open along the scoring as a result of the outward pressure created by a rearward portion of the conically shaped tool which is larger in diameter than the inside of the existing pipe. A replacement pipe is attached to the end of the tool and simultaneously pulled into place. The short tapered shape of the tool allows it to be pulled through bends encountered in the existing plastic pipe.Type: GrantFiled: December 21, 2000Date of Patent: December 31, 2002Inventor: Darren L. Coon
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Patent number: 6491476Abstract: Apparatus and method for the trenchless laying of pipework underground, having a total and a gauge for the continuous widening of a preferably wound preformed pipe on a linkage for use in pits of small dimensions, preferably inspection shafts of sewage systems.Type: GrantFiled: April 21, 1999Date of Patent: December 10, 2002Assignee: Tracto-Technik Paul Schmidt SpezialmaschinenInventor: Alfons Hesse
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Patent number: 6491475Abstract: A cable laying method is disclosed, which facilitates an easy cable laying on a cable bed without damaging cables. The method comprises dragging a cable onto a cable drag route of a cable bed, and shifting the cable onto a cable housing provided adjacent the drag route.Type: GrantFiled: November 23, 1999Date of Patent: December 10, 2002Assignee: Mirai Kogyo Kabushiki KaishaInventor: Shohachi Shimizu
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Patent number: 6481930Abstract: An apparatus for inserting and removing a flexible first material into a second material (20) includes a moveable carriage (22). An adjustable clamp (24) is connected to the moveable carriage (22), adjustable between an open position and a clamped position on the first flexible material. In a preferred embodiment, a receiver stiffener casing (26) is configured to receive and support the flexible first material as the flexible first material is inserted into and removed from the second material.Type: GrantFiled: November 30, 2000Date of Patent: November 19, 2002Assignee: Longbore, Inc.Inventor: John Forrest
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Patent number: 6478508Abstract: An apparatus for laying underground electric cables, in particular for high-voltage lines, having a vehicle towable along a trench and carrying, on a first van, a first deposition unit adapted to form a base layer of inert material for heat dissipation at the trench bottom. Mounted on the first van is a guide structure engaging the cable for laying it on the base layer previously compacted by a vibrating plate. A second van carries a second deposition unit forming a covering layer of inert material upon the previously laid-down base layer and cable.Type: GrantFiled: October 19, 2001Date of Patent: November 12, 2002Assignee: Pirelli Cavi E Sistemi S.p.A.Inventors: Francesco Magnani, Mario Genovesi, Danilo Caslini
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Publication number: 20020153170Abstract: A method of slitting a flexible conduit in an underground bore, the conduit having entry and exit ends thereof exposed for access, includes: (1) fitting a retainer to flexible underground conduit adjacent to the entry end thereof, the retainer securing the flexible conduit to limit longitudinal movement thereof relative to the bore, (2) passing pulling means through the flexible conduit; (3) connecting the pulling means to a pipe slitter, and (4) pulling the pipe slitter through the retainer and flexible conduit to slit the conduit, the retainer holding the flexible conduit taut as the slitter passes through the conduit. In one embodiment, the retainer is a shoring clamp assembly including a pair of ring clamps that are secured onto a split end of the flexible conduit and transfer the longitudinal forces applied to the conduit during the slitting operation to an adjacent structure such as a pit wall, thereby holding the conduit taut during the slitting operation.Type: ApplicationFiled: April 20, 2001Publication date: October 24, 2002Inventors: Robert F. Crane, Steven W. Wentworth
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Patent number: 6443658Abstract: An improved method and apparatus for trenchless placement of pipe or conduit that allows termination at a vault or manhole structure without destruction of the vault or manhole. The specific improvement is the means of making the bursting ram and all components used in the procedure (but for the replacement pipe) disassemblable in a small space, such as a vault or manhole. The disclosed improvement is a means to keep the bursting ram together during use but then to allow the bursting ram after it enters into the manhole or vault, to be disassembled with hand tools and removed in parts without destruction or damage to the vault structure. This makes the trenchless placement of conduit or piping non-destructive over the distance of the route as well as at the termination at a manhole.Type: GrantFiled: July 3, 2000Date of Patent: September 3, 2002Inventor: David A. Lincoln