With Protection Or Indication Of Pipe Or Trench Patents (Class 405/157)
  • Patent number: 5984581
    Abstract: Method and apparatus for weighting pipe segments of the type that are interconnected to form a pipeline for transporting fluids such as natural gas and the like. The exterior surface of each segment is wetted with a friction reducing agent prior to forming a coating of weighting material along the length of the pipe segment, the friction reducing agent selected to prevent the adhering of the weighting material to the pipe. In the preferred embodiment, where a medial portion of the pipe segment is wrapped with an adhesive material prior to wetting the remaining portion of the pipe segment's external surface with the friction reducing agent, and encasing same with the weighting material. Preferably, the adhesive material is joint tape, the friction reducing agent is vegetable oil, and the weighting material is concrete.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: November 16, 1999
    Assignee: B.L. Key Services, L.L.C.
    Inventors: James C. McGill, James M. McGill, Bobby L. Key
  • Patent number: 5971664
    Abstract: Apparatus and a method for accurately positioning a conduit. The apparatus comprises a vertical tubular section with first and second arms at right angles to the vertical section. The first arm supports a conduit and the second is a fixed and accurate height above the first. A surveying instrument a removeably mounted on the second arm to enable the conduit to be accurately vertically placed. A set screw holds the vertical section in place.
    Type: Grant
    Filed: March 30, 1998
    Date of Patent: October 26, 1999
    Assignee: Wilson Family Trust
    Inventor: Harry L. Wilson
  • Patent number: 5973270
    Abstract: A cable protector for use within a wellbore has at least one housing member adapted to be placed against a wellbore device, such as an electric submergible pumping system. The housing member has at least one and preferably two longitudinal protrusions extending therefrom, which are adapted to receive an electric power cable adjacent to or between the protrusions. One or more bands or straps extend around the housing member to attach the cable protector to the wellbore device and to retain the cable between and inwardly of the protrusions.
    Type: Grant
    Filed: June 16, 1997
    Date of Patent: October 26, 1999
    Assignee: Camco International, Inc.
    Inventor: Marvin A. Keller
  • Patent number: 5904185
    Abstract: A conduit for the circulation of fluid under pressure comprising a tubular enclosure delimited by a thin wall and fixed on a rigid base slab of molded material. The upper part of the enclosure comprises, in cross-section, at least three thin wall segments, including two lateral segments each extending from a lower side to an upper side, and at least one upper segment closing the enclosure by connecting the upper sides of the lateral segments. Each lateral thin wall segment is joined to a rigid support element of molded material fixed at its base to the corresponding side of the slab and comprising an inner surface conjugate with that of the lateral segment onto which the latter is applied. The inner surface extends from the level of the upper surface of the slab as to a level sufficient to maintain the rigidity of the lateral segment over its entire height.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: May 18, 1999
    Assignee: Societe Civile de Brevets Matiere
    Inventor: Marcel Matiere
  • Patent number: 5899636
    Abstract: A reversible lining tube for repairing an existing pipeline is reversible into the existing pipeline so that its initial inner surface becomes its outer surface which adheres to the internal surface of the pipeline. In detail, the reversible lining tube includes an elastomer layer and a flock layer, prior to reversal into the existing pipeline the elastomer layer is an outer layer and the flock layer is an inner layer, upon reversal into the existing pipeline the elastomer layer becomes an inner layer and the flock layer becomes an outer layer which adheres to the internal surface of the existing pipeline.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: May 4, 1999
    Assignees: Tokyo Gas Co. Ltd., Nisshinbo Industries, Inc.
    Inventors: Shigeru Toyoda, Shuichi Yagi, Masaaki Itagaki, Kazuki Okabe
  • Patent number: 5893681
    Abstract: A flexible supply line to connect media transporting underground supply lines includes a metal corrugated bellows, a connection member at each end of the metal bellows and a flexible wrap wrapped along the metal bellows and the connection members. The invention also includes a method for attaching the wrap to the metal bellows.
    Type: Grant
    Filed: January 6, 1997
    Date of Patent: April 13, 1999
    Assignee: Senior Engineering Investments AG
    Inventors: Kurt Boden, Stefan Burger
  • Patent number: 5871306
    Abstract: A pipe supporting apparatus including a pipe supporting portion securable within a trench beneath a length of pipe for support thereof before filling the trench around the length of pipe with backfill material.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: February 16, 1999
    Inventor: Michael S. Tilcox
  • Patent number: 5871034
    Abstract: An improved, cost-effective, insulated pipeline or assembly of pipelines suitable for use in water or below grade, that is insulated with a bituminous composition.
    Type: Grant
    Filed: August 29, 1995
    Date of Patent: February 16, 1999
    Inventor: Glen R. Sumner
  • Patent number: 5870865
    Abstract: A method for repairing a drainage system adjacent a foundation wall includes the step of digging a first ditch to provide access to a section of drain tile, removing that section of the drain tile, digging a second ditch to provide access to a damaged area of the foundation, the second ditch being of a width that is narrower than the first ditch to provide support areas of undisturbed earth. The damaged area is then repaired and a rigid pipe installed and supported on the support areas. Since the rigid pipe is supported on support areas, no sagging of the replaced portion of the drainage system will occur in the event that the underlying earth settles or becomes unstable.
    Type: Grant
    Filed: June 26, 1997
    Date of Patent: February 16, 1999
    Assignee: Everdry Marketing & Management, Inc.
    Inventors: John S. Wesolowski, Jack Myers
  • Patent number: 5846023
    Abstract: Non-abrasive pads are attached to the at least one side of concrete elements with nylon rivets that are embedded into the concrete when the latter is soft. A flexible rope is laced through the center of each element in two directions to form a mat in a row-column array. Adequate spacing is provided between each element to allow the mat to conform to an uneven seabed and cover the underwater installation. The non-abrasive pads separate the concrete elements from the underwater installation to prevent the concrete elements from scratching and ablating the delicate underwater installations. Grooves are provided in selected elements, and loops are provided at the outer edges of the mat to enable several mats to be linked together.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: December 8, 1998
    Assignee: Submar, Inc.
    Inventors: Thomas M. Angel, Robbie Boudreaux
  • Patent number: 5839242
    Abstract: A method for installing a plurality of utility lines from a plurality of utility distribution sources to and end user includes excavating a single trench from a common location at about the utility distribution sources. The trench is excavated between about 66 and 48 inches deep and about 24 inches wide. A plurality of utility lines are positioned in the single trench, wherein an electrical utility line, if installed, is at a lowest elevation in the trench. A water line, if installed in the trench, is at an intermediate elevation therein, and a gas line, if installed, is at an uppermost elevation in the trench. A single partitioned service box is installed in the trench through which the utility lines can be accessed. The utility lines are buried with appropriate fill.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: November 24, 1998
    Assignee: Sierra Pacific Resources, Inc.
    Inventor: Timothy P. Berg
  • Patent number: 5807026
    Abstract: An assembly for pulling the end of a cable includes a hollow anchoring body having an axial passage formed in a front end thereof for receiving an end of the cable. The anchoring body has an integral hollow cylindrical skirt coaxially extending rearwardly, the skirt receiving an axially positioned insulating ring and a clamping assembly that is located radially inwardly of the ring. The clamping assembly has three sections: (a) a hollow sleeve having an internal thread at a rear end thereof and a tapered shoulder at a front end thereof; (b) a clamping member received in the tapered shoulder of the sleeve; (c) a fastener screwed into the internal thread and abutting the clamping member; and (d) a head formed on the fastener to permit it to be screwed into the thread and apply axial pressure to the clamping member thereby forcing the clamping member to clamp the covering of an optical module of the cable. A removable hollow pulling cover axially abuts the anchoring body and covers the cylindrical skirt.
    Type: Grant
    Filed: June 19, 1996
    Date of Patent: September 15, 1998
    Assignee: France Telecom
    Inventor: Jean-Marc Valette
  • Patent number: 5795104
    Abstract: A waterglass-based material containing an inorganic component A of an alkali metal silicate having a low viscosity and a high silica content and a component B having at least one fast hardening agent, preferably carbonic esters, and a hardening retarder of at least one further hardening agent which acts more slowly, preferably dialkyl carboxylates, in particular dimethyl succinate, dimethyl glutarate and/or dimethyl adipate. The material may also contain optional further additives, such as liquefiers, thixotropic agents, lubricants and fillers and the like. Processes for hardening a waterglass-based material and use of such a material for sealing pipelines, sewers and containers, for soil stabilization, coating and impregnation of materials and for the production of shaped articles are also indicated.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: August 18, 1998
    Inventor: Rudolf E. Schanze
  • Patent number: 5785456
    Abstract: A material and method is provided for lining man-entry sized pipes and securing the lining to the pipe. The lining comprises a unplasticized polyvinyl chloride panel including an interior channel through which grout may be injected. Upon the grout's curing, the grout provides strength and support for a second layer of grout injected into an annulus between the pipe's inner surface and an outer surface of the lining.
    Type: Grant
    Filed: September 11, 1996
    Date of Patent: July 28, 1998
    Assignee: Danby of North America
    Inventor: George McAlpine
  • Patent number: 5782584
    Abstract: A utility enclosure apparatus for utility lines extending upward from the ground consists of a housing defining a cavity and an upper aperture opening into the cavity as well as a lower aperture for the passage of utility cables into the cavity. Two rails extend upward from the housing and support a hanger rod therebetween that is slidable along the lengths of the rails. An amplifier or other device may be hung from the hanger rod for connection to the utility cables. An adjustable center support bar extends across the upper aperture in the housing to provide support to the amplifier or other device hanging from the rail. A rock-like cover is configure to fit over and conceal the housing and be removably secured to the housing so as to provide an aesthetic look to the utility enclosure.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: July 21, 1998
    Inventor: Joel C. Arthur
  • Patent number: 5755527
    Abstract: Ramp apparatus conveying water across a thoroughfare includes a pair of ramp elements spaced apart from each other with a liquid carrying element disposed between them. The ramp elements and the liquid carrying element are secured together as an integral unit, and coupling elements are disposed in opposite ends of the ramp for coupling to hoses, etc. The apparatus is designed to be disposed across the thoroughfare, and accordingly has a relatively low profile for ease of traffic problems as traffic moves over the ramp apparatus and at the same time is able to carry a substantial amount of fluid or liquid, such as water, from one side of the thoroughfare to the other side.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: May 26, 1998
    Inventor: Peter Dufresne
  • Patent number: 5738463
    Abstract: The present invention provides methods of grouting a subsurface conduit whereby the hardened grout resists stress failures. The methods basically comprise the steps of forming a hardenable grout composition having elastomeric properties upon hardening, placing the hardenable grout composition adjacent to the outside of a subsurface conduit whereby upon hardening the grout composition forms an elastomeric solid support for the conduit and allowing the hardenable grout composition to harden into an elastomeric solid mass.
    Type: Grant
    Filed: August 15, 1996
    Date of Patent: April 14, 1998
    Assignee: Halliburton Company
    Inventor: David D. Onan
  • Patent number: 5735642
    Abstract: A rotatable trench shield handling assembly provided with upwardly extending excavator hook-engaging means. The rotatable trench shield handling assembly provided with rear downwardly extending trench shield wall engaging means and with an opposed forward transversely positioned horizontally oriented trench shield wall engaging guide stabilizer bar means which cooperates with the rear spaced apart trench shield wall engaging means to positively and easily engage the trench shield so as to enable the excavator operator to have positive control of the trench shield while lifting, handling, lowering, and selectively stacking the trench shield into its operative use position within a trench and subsequently removing the trench shield therefrom.
    Type: Grant
    Filed: March 19, 1996
    Date of Patent: April 7, 1998
    Assignee: Efficiency Production, Inc.
    Inventor: Luther Bradford Barringer
  • Patent number: 5713700
    Abstract: A method of laying a cable system in which the cable guide tube has internal ribs alternating in helical direction and of dimensions and number designed for particular cable radii and cross section to allow the cable, whether a single cable or a bundle or cables to be blown through about 2000 m of the tube with 90 kN of force or to be pulled by a strand through the conduit with a force of 2.5 kN over a stretch of 1400 m without damage to the cable.
    Type: Grant
    Filed: May 15, 1995
    Date of Patent: February 3, 1998
    Assignee: Dipl-Inc. Dr. Ernst Vogelsang GmbH & Co.KG
    Inventor: Horst Vogelsang
  • Patent number: 5683203
    Abstract: A method and apparatus for installing a padmount transformer using a buried support frame is provided wherein the transformer is mounted adjacent a trench about the underground cable, the frame includes a pair of telescopically extendable legs which rest on the trench bottom. Each of those legs reaches to the top of the trench and is removably attached at that upper end to one of a pair of arms that rest on the surface of the ground under where the floater pad is to be placed. A stabilizing bar is removably attached to each of the legs to secure them in a desired relative position. The position of each of these frame elements can be adjusted to permit the top of the frame to be made level. The relatively compact ground at the bottom of the trench and the surface adjacent the trench secures the frame against significant or uneven changes in vertical position over time.
    Type: Grant
    Filed: February 7, 1996
    Date of Patent: November 4, 1997
    Assignee: Donald W. Anderson
    Inventors: Donald W. Anderson, Dieter John Trimolt
  • Patent number: 5681640
    Abstract: A passive fire protection system for the protection of conduits, cable trays, support rods, and structural steel against flame and heat in a severe total environment type fire such as a hydrocarbon fire which includes a multi-layered (laminated), flexible material containing a plurality of layers of intumescent materials. This multi-layered material is configured such that it provides a containment system for the carbonaceous foam resulting from the expansion of the intumescent materials.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: October 28, 1997
    Assignee: Flame Seal Products, Inc.
    Inventor: Michael D. Kiser
  • Patent number: 5624206
    Abstract: An apparatus and method for supporting pipe main repair tools in an excavation while repairs are being made requires only exposure of the top surface of a buried main and utilizes an anchoring system installed in or above the excavation and an elongate support member that spans the excavation in a generally horizontal position above the pipe main and supports an elongate tubular seal tube against the exposed surface of the pipe main. The elongate support member is secured and supported at opposite ends on the ground surface on opposed sides of the excavation by a pair of parallel laterally spaced shoring members firmly engaged on opposed sides of the excavation, or by a pair of parallel laterally spaced anchor plates firmly engaged on the ground surface on opposed sides of the excavation.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: April 29, 1997
    Assignees: Brooklyn Union Gas Co.,, Consolidated Edison Company of New York, Inc.
    Inventors: John H. Cohen, Curtis E. Leitko, Gerard T. Pittard, Terry P. Clifton, Gerald Rockower
  • Patent number: 5611643
    Abstract: In the process for the construction of trenches in ground containing water and/or gas wherein a trench is due in said ground, support media is introduced in said trench to support the walls formed by the treching, vapor or water conduit means are placed in the trench and the trench with this support media is back-filled with particular material to dispose and remove the support media from the trench, the improvement comprising employing as said support media a hydrated cross linked acrylic polymer.
    Type: Grant
    Filed: August 10, 1995
    Date of Patent: March 18, 1997
    Assignee: Envirotrench
    Inventor: Gilbert R. Tallard
  • Patent number: 5605419
    Abstract: Flexible, elongated, tubular ducts or conduits are assembled above ground on transverse supports into a duct bank of an array of layers held by a plastic grid of transverse spacers. An underground trench can be excavated having substantially straight sidewalls, while excavated soil from the trench is placed on the side away from the assembled duct bank. Two or more pieces of equipment, spaced apart, sequentially lift and laterally move the assembled duct bank to the trench. Transverse support members spanning the trench are removed, and the assembled duct bank is lifted and lowered sequentially into the trench using a small angle of displacement from the horizontal while lowering the assembled duct bank onto transverse support members positioned in the bottom of the trench, to provide an underground duct bank. Round, freely rotatable, plastic spacers in groups of four facilitate lowering the assembled duct bank into the trench.
    Type: Grant
    Filed: June 14, 1994
    Date of Patent: February 25, 1997
    Inventor: Gary L. Reinert, Sr.
  • Patent number: 5585725
    Abstract: A system 10 and method of detecting an underground pipe 12 injects magnetic marking droplets 16 into the underground pipe 12 which coat the inside of the pipe 12 and may be detected from aboveground by a magnetometer 28. The droplets 16 include a non-adhesive cover 32 which allows free flow thereof through the pipe 12, with the cover 32 being ablatable for the timed-release of a central core 30 containing magnetic particles 30a which adhere to the inside of the pipe 12 and are detectable from aboveground. The rate of ablation of the droplet covers 32 is selectively variable to control a free flowing incubation zone 12a for the droplets 16 and a subsequent deposition zone 12b in which the magnetic particles 30a are released for coating the pipe 12.
    Type: Grant
    Filed: April 13, 1995
    Date of Patent: December 17, 1996
    Assignee: Associated Universities, Inc.
    Inventors: James R. Powell, Morris Reich
  • Patent number: 5577864
    Abstract: The invention provides that where a main underground pipeline or passageway (10) is lined by a lining tube which extends over the connection of a lateral pipe (12) with the main pipeline or passageway (10), the lateral connection can be readily located and the lining tube (44) cut to re-establish the connection, if such as a steel ball or other deposit, which is radiation detectable, is placed on the surface of the pipeline or passageway (10) at a predetermined distance (77) from the said lateral connection.
    Type: Grant
    Filed: June 23, 1994
    Date of Patent: November 26, 1996
    Assignee: Insituform B.V.
    Inventors: Eric Wood, deceased, Miranda J. Bull, executrix
  • Patent number: 5527070
    Abstract: An in-ground installed pipe system, laid in expansive type soils, that has a plastic-like wrapping of the main pipe area and a plastic-like covered cushion layer of the joint connections, to provide protection to a pipe system against pipe movement and joint connection disruption, during the swelling and shrinkage process of the surrounding expansive soil, during seasonal variations of moisture content of the soil. The plastic-like wrapping of the pipe section is usually installed prior to installing the pipe into the trench. The plastic-like covered cushion layer is installed around the pipe joint connection, in the trench, after the pipe is installed into the end of the previously laid pipe section.
    Type: Grant
    Filed: April 5, 1995
    Date of Patent: June 18, 1996
    Inventor: William C. Blackwell
  • Patent number: 5509758
    Abstract: A template is provided having an expandable base portion (12) with a plurality of raised side cavities (24) to receive and retain underground cables prior to, during and after trench backfilling. The base includes a pair of slidably mounted wings (14) to assist in bridging the trench and stabilizing the base on ground adjacent the trench. A removable back member (28) is attached to the base to bridge the cavities and secure the cables therein. A guide (36) is provided for receiving a grounding rod (38) and a central opening (40) is formed in the base as a hand hold and to permit backfilling under the base when needed. In use, the base is mounted over the trench at the desired location for the padmount transformer. The cables are then secured to the base, and the trench is backfilled with the base being grounded. Afterwards, the cables are released from the base and attached to the padmount transformer.
    Type: Grant
    Filed: October 18, 1993
    Date of Patent: April 23, 1996
    Inventor: Donald W. Anderson
  • Patent number: 5494374
    Abstract: The secondarily contained piping system having two spaced access chambers that are interconnected by a secondary containment pipe to provide a sealed arrangement for a flexible fluid supply pipe, the ends of which are disposed within the access chambers. The outer flexible pipe is sized to permit the insertion and/or removal of the primary flexible pipe during installation and testing of the same and after backfilling of the trench within which the pipe is disposed, the outer flexible tubing partially collapses to engage and prevent relative movement between the two pipes while providing a flow path thereinbetween.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: February 27, 1996
    Inventors: Andrew Youngs, Timothy A. Ashcraft
  • Patent number: 5490742
    Abstract: A portable, modular and easily applied protective pipeline covering which resists impact, penetration and tearing while providing an appearance which enhances visibility. In certain embodiments, a plurality of layers encodes information on the substance carried by the pipeline and the depth of penetration of any tear or abrasion. The covering comprises a resilient wall matrix and may include an outer layer which is relatively penetration-resistant. Modular covers may be flexible, semi-rigid or rigid. They are applied in modules which each comprise one or more pieces which substantially conform to the pipeline surface, being held in place by circumferential tension elements or, in the case of flexible covers which are wrapped or wound on a pipeline, may be inhibited from unwinding by circumferential tension elements or adhesion means coupled to the cover material. Each cover module has attachment means on each end to allow linking of cover modules after placement on the pipeline.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: February 13, 1996
    Inventor: Tommy J. Cronk
  • Patent number: 5482403
    Abstract: Prefabricated concrete pipe encasements are disclosed for stabilizing underground conduit systems from movement caused by flotation, back filling or settling. In one embodiment, a sewer chimney includes a plastic riser connected between a tee-fitting in a sewer main and a cap block at a branch service line. At least one pipe encasement and a prefabricated concrete base encircles the riser for maintaining alignment with the tee-fitting. In other embodiments the pipe encasement encircles a generally horizontal pipe line.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: January 9, 1996
    Assignee: Hail Mary Rubber Company, Inc.
    Inventors: William D. Jones, Louis A. Esposito
  • Patent number: 5476343
    Abstract: An improved thermally insulated, impact and abrasion resistant pipeline and an impact resistant, flexible, cementitious material which maintains low thermal conductivity when submerged and which is suitable for insulating underwater pipelines, said material comprising:hydraulic cement, a closed cell aggregate which exhibits low water absorption under high hydrostatic pressure and a polymeric modifier which increases flexibility and reduces porosity of the cured cementitious material.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: December 19, 1995
    Inventor: Glen R. Sumner
  • Patent number: 5468091
    Abstract: A method of lining an old pipe (1) with a plastics liner (20) avoids the need to excavate a hole at the underground connection (2) between the pipe and a main (3). This is achieved by injecting a flowable sealant material into the annular space between the liner (20) and the pipe (1) such that the sealant extends close to the connection (2). To prevent sealant entering the main (3), the advancing sealant is detected when it approaches the connection (2) by a capacitative sensor (81) located within the liner on a flexible elongate carrier (69). The procedure is carried out with gas in the main (3), a removable plug (67) being housed in a terminator (62) for the liner (20), and the plug being subsequently captured by a connector (68) on the carrier (69) and then withdrawn through the liner. The sensor (81) also enables the liner prior to injection of the sealant to be correctly positioned axially of the pipe ( 1) according to the type of connection (2).
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: November 21, 1995
    Inventors: Kevin E. Arnold, Keith Baylis
  • Patent number: 5452969
    Abstract: An apparatus for spreading a bedding material in a ditch to provide a bedding layer for laying a pipe thereon is disclosed. The apparatus includes a screened opening which extends for selectively passing bedding material below a readily selected particulate size, and particulate matter above the selected particulate size is directed forward of the apparatus. The apparatus further includes a discharge opening having side plates which control the width of the bedding layer. The discharge opening also has a back-skid plate for controlling the vertical thickness of the bedding layer. The back-skid plate is a horizontally extending plate which is adjustable for selectively determining the vertical thickness of the bedding layer deposited.
    Type: Grant
    Filed: February 1, 1994
    Date of Patent: September 26, 1995
    Inventor: William A. Crook
  • Patent number: 5449250
    Abstract: A method and system for long-term control of root growth without killing the plants bearing those roots involves incorporating a 2,6-dinitroaniline in a polymer and disposing the polymer in an area in which root control is desired. This results in controlled release of the substituted aniline herbicide over a period of many years. Herbicides of this class have the property of preventing root elongation without translocating into other parts of the plant. The herbicide may be encapsulated in the polymer or mixed with it. The polymer-herbicide mixture may be formed into pellets, sheets, pipe gaskets, pipes for carrying water, or various other forms. The invention may be applied to other protection of buried hazardous wastes, protection of underground pipes, prevention of root intrusion beneath slabs, the dwarfing of trees or shrubs and other applications. The preferred herbicide is 4-difluoromethyl-N,N-dipropyl- 2,6-dinitro-aniline, commonly known as trifluralin.
    Type: Grant
    Filed: May 23, 1991
    Date of Patent: September 12, 1995
    Assignee: Battelle Memorial Institute
    Inventors: Frederick G. Burton, Dominic A. Cataldo, John F. Cline, W. Eugene Skiens
  • Patent number: 5449020
    Abstract: An elongated enclosure designed to withstand internal pressure which may exceed 10 bars and forming a sealed, fluid-tight tubular space having a truncated transverse section, the enclosure comprising a lower part formed by a rigid concrete slab resting on the ground and an upper part constituted by a thin metal wall in the shape of a curved arch extending between two lateral ends parallel to the longitudinal axis and connected to the slab, each of which is attached by a longitudinal junction piece connected tangentially to the lateral end of the arch.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: September 12, 1995
    Inventor: Marcel Matiere
  • Patent number: 5423630
    Abstract: A tubular structure (21) composed mainly of a sheet material (22) formed from a thickened solution of an ultraviolet-curing resin in which high-strength fibers are dispersed, is inserted into a pipeline (7) so as to face a damaged part (26) thereof, is expanded into intimate contact with the inner surface of the pipeline (7), and is irradiated with ultraviolet light on its inner surface, whereby the resin is cured. Sealing members (24, 24') capable of swelling with water are fitted about the opposite end portions of the tubular structure (21) so that the sealing members (24, 24') may be located on the opposite sides of the damaged part (26) of the pipeline (7) from each other.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: June 13, 1995
    Assignee: Ashimori Industry Co., Ltd.
    Inventors: Takayoshi Imoto, Shinichi Takebe
  • Patent number: 5385431
    Abstract: An apparatus is provided for conveying flow across a traffic way between a first flow conduit and a second flow conduit. The apparatus includes a ramp member defining an interior region, a first coupling attachment coupling to the first flow conduit for delivering flow to the interior region, a second coupling attachment coupling to the second flow conduit to deliver flow from the interior region to the second flow conduit, and connectors for connecting both coupling attachments to opposite ends of the ramp member. A kit having components to allow assembly of such an apparatus in the field is also provided. A method for conveying flow across a traffic way between a first flow conduit and a second flow conduit is also provided.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: January 31, 1995
    Assignee: Miller Pipeline Corporation
    Inventor: Henry E. Topf, Jr.
  • Patent number: 5385430
    Abstract: A conduit weighting device comprising containment device adapted to supportingly receive a superposed charge of ballast material, in contained relation within an at least one enclosure circumscribed on all sides by upwardly extending containment device walls adapted to retainingly confine the charge between the walls. The device is adapted to be positioned in straddling, superposed relation over a conduit, to thereby at least partly counter displacement forces effecting the conduit means.
    Type: Grant
    Filed: April 23, 1993
    Date of Patent: January 31, 1995
    Inventor: Geoff W. Connors
  • Patent number: 5380128
    Abstract: A method and material for the manufacturing or retrofitting of fluid transport systems. The material chosen for the lining, or the pipe itself, will be selected based on physical properties such as a high impact strength and a low coefficient of friction. The low coefficient of friction will be essential to prevent the initial adhesion of foreign substances to the inner surface of pipes. In particular, an improved pipe composite will be useful in the lining or construction of water intake pipes where there is a well-recognized problem of the buildup of foreign substances including algae and other marine microorganisms. Therefore, by preventing buildup, the present invention will provide a more economical and efficient method to maintain the overall piping system.
    Type: Grant
    Filed: March 2, 1992
    Date of Patent: January 10, 1995
    Inventor: Clois D. Fears
  • Patent number: 5350253
    Abstract: A method of supporting distribution means, such as a pipeline, that accommodates temperature-induced expansion or contraction of the distribution means as well as unexpected, infrequent shocks to the structure, and provides effective thermal isolation of the distribution means from the surface on which the structure rests. The method includes arranging laterally spaced apart fixed bearing supports on a surface adjacent a path for distribution means and supporting elongated elastic members on the bearing supports at a distance spaced inwardly from the ends of the elastic members. Distribution means may be placed in association with the elastic members. Beginning from an equilibrium state, each elastic member is capable of bending in proportion to the magnitude of an additional load applied intermediate the ends of the elastic member, with the ends of each member sliding against the bearing members a distance also proportional to the magnitude of the additional load.
    Type: Grant
    Filed: March 24, 1993
    Date of Patent: September 27, 1994
    Inventor: John Cunningham
  • Patent number: 5336023
    Abstract: A self-propelled trench box includes a pair of side panel enclosures and respective drive tracks mounted within the enclosures. The drive tracks are powered by a compact hydraulic drive mechanism mounted within the trench box to move the trench box in either direction within the trench. A plurality of track path plows are mounted to each side panel enclosure to clear loose material from the paths of the drive tracks to facilitate movement of the trench box within the trench.
    Type: Grant
    Filed: January 12, 1993
    Date of Patent: August 9, 1994
    Inventor: Clyde Burdine
  • Patent number: 5322653
    Abstract: A method of repairing a damaged (e.g., cracked) portion of a buried sewage pipe by permeating one or more layers of fibrous material with a hardenable plastic compound (such as epoxy resin), convoluting the thus obtained mat around a radially expandible length of hose to permit frictional engagement between the internal surface of the mat and the external surface of the hose, introducing the hose into a selected defective portion of the pipe, expanding the hose and the convoluted mat so that the mat engages the internal surface of the pipe, deflating the hose, and withdrawing the hose from the pipe, preferably after the plastic compound has set wherein a film of polyethylene is inserted between the external surface of the hose and the internal surface of the convoluted mat to enhance friction and to thus compel the hose to turn in the course of the expanding step.
    Type: Grant
    Filed: June 5, 1992
    Date of Patent: June 21, 1994
    Inventor: Hans Muller
  • Patent number: 5308193
    Abstract: An apparatus for dispersing chemicals into an underwater pipe comprising first and second chemical feed pipes, the feed pipes being mounted to an intake pipe forming part of the underwater pipe, the first feed pipe extending along the length of the intake pipe and being connected to the second feed pipe, the second feed pipe being mounted to the intake pipe at that portion of the intake pipe adjacent an intake pipe opening, the second feed pipe including a plurality of inwardly extending releasing valves for dispensing chemicals into the intake pipe, the chemicals being delivered to the second feed pipe through the first feed pipe. A cone-shaped device is also disclosed for inserting the first chemical feed pipe into the intake pipe, the cone-shaped device having first and second cone elements coaxially spaced apart to form an air pocket therebetween.
    Type: Grant
    Filed: March 15, 1991
    Date of Patent: May 3, 1994
    Inventor: Paul G. Rufolo
  • Patent number: 5271699
    Abstract: A process and apparatus for forming a wood grain simulation pattern on surfaces of synthetic articles such as synthetic lumber planks. The articles are fed along a predetermined path on a conveyor surface. A plurality of cutting blades are disposed about the periphery of a rotatable cylindrical element supported on a drive shaft. As the synthetic article is fed under the rotatable cylindrical element which is in rotation, the blades which are disposed across an outer surface of the article on which a grain simulation is desired, cut a plurality of short slits spaced laterally from one another in an offset pattern. These slits extend along the feed axis of the article and simulate a wood grain in the outer surface thereof.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: December 21, 1993
    Inventors: Guy Barre, Vigneault, Remi
  • Patent number: 5242247
    Abstract: The invention relates to an apparatus for laying pipe and/or drainage tile at a desired depth below ground, and a preferred level grade within a trench. The invention maintains the placement of the pipe and, upon substantial completion of backfilling operations of the trench, may be removed for reuse. The invention includes a shaft having an adjustable sleeve and an adjustable pipe-grasping sleeve adapted for engagement to a variety of sized pipes and/or drainage tile. The invention may be securely placed into a trench by manual manipulation of the handles and/or by striking of the strike plate with a hammer. The invention is designed for fast and convenient removal from a trench.
    Type: Grant
    Filed: April 3, 1992
    Date of Patent: September 7, 1993
    Inventor: John H. Murphy
  • Patent number: 5230842
    Abstract: To rehabilitate an internally corroded underground pipeline, excavations are made at its opposite ends to which launching and receiving pipe structures are then secured. Various pig member sets, with appropriate treatment fluids carried thereby, are air-driven through the entire length of the pipeline to successively acid clean, etch, and neutralize its interior surface. The interior pipeline surface is then thoroughly dried by flowing dehydrated air through the pipeline. Specially designed leading and trailing extruder pigs, with 100% solid, high viscosity, solvent-free epoxy coating material therebetween, are then air-driven through the pipeline to extrude a first protective coating layer onto its interior surface. The first layer is then dried with dehydrated air.
    Type: Grant
    Filed: October 4, 1991
    Date of Patent: July 27, 1993
    Inventor: Bruce A. Munde
  • Patent number: 5224742
    Abstract: A cut-off material is provided, which includes an impermeable cutoff member (10, 70) provided with an expandable hose portion (18, 72) and a flange portion (20, 74) formed integrally with one end of the hose portion. The cutoff member is disposed in first and second pipelines, so that the flange portion is positioned within the first pipeline (12) and that the hose portion is positioned within the second pipeline (14). The cut-off member is maintained, for example, by a base (24,54,82) that is wound to be radially expandable, so that the flange portion is brought into liquid tight contact with the inner surface of the first pipeline and the hose portion extends within the second pipeline.
    Type: Grant
    Filed: July 29, 1991
    Date of Patent: July 6, 1993
    Assignees: Toa Grout Kogyo Kabushiki Kaisha, Kabushiki Kaisha Iseki Kaihatsu Koki
    Inventors: Sinkiti Ooka, Yukio Suzuki, Hisashi Kitajima, Hidehiro Noda
  • Patent number: 5200704
    Abstract: Both a system and a method are provided which allows an eddy current probe to accurately determine both the proximity and dimensions of non-conductive structures which are normally invisible to such probes. The system includes a portable target medium that is movable into a known position with respect to the non-conductive structure, and that includes a conductive material that couples strongly with a fluctuating magnetic field, and a movable eddy current probe that emanates a fluctuating magnetic field and which generates a signal indicative of the magnitude of the interaction between the field and the portable target medium from which the distance between the two may be computed. The system may be used to determine the proximity of non-conductive structures such as plastic pipes that have been buried under ground, as well as the dimensions of such non conductive structures.
    Type: Grant
    Filed: February 28, 1991
    Date of Patent: April 6, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: William G. Clark, Jr., Francis X. Gradich, Lee W. Burtner, Michael J. Metala
  • Patent number: 5193937
    Abstract: A concrete or the like mattress for laying over a pipeline on the seabed comprises an elongate recess or tunnel (5) having an insulating material (6) located therein. The mattress is laid over a subsea pipeline so that the pipeline is received within the insulant-containing tunnel. The pipeline is thus physically protected and thermally insulated. The mattress can comprise a plurality of concrete or like members (1,2,2',3,3') articulated together.
    Type: Grant
    Filed: July 18, 1991
    Date of Patent: March 16, 1993
    Assignee: SeaMark Systems Limited
    Inventor: Keith E. J. Miller