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WO/1998/012465A1 |
The present invention relates to a coating applied onto the internal surface of a pipe, wherein said coating consists of two coaxial tubular and film-type envelopes (2, 3) made of a thermoplastic polymer. The outer envelope (2) rests aga...
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WO/1998/000666A1 |
The invention relates to a method, an arrangement and a plug (4) separated from a strip for closing at least one end of a tube (8) to protect the tube (8) against internal dirtying. The plug (4) formed for closing a tube end (12) is toge...
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WO/1997/048940A1 |
The use of a fabric sheath (2), or other article, on a conduit (1), for example a pipe or flexible hose, to provide abrasion resistance or other forms of protection, for example impact protection or cut-through protection, thereto; and f...
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WO/1997/040080A1 |
The invention relates to a process for the preparation of a polypropylene for e.g. pipe applications, containing from 1.0 to 10.0 % by weight of ethylene or C4-C10-'alpha'-olefin repeating units and having an MFR2 value of between 0.05 a...
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WO/1997/034351A1 |
A corrugated sheath (10) for thermally and mechanically protecting electrical cables is disclosed. The sheath comprises an outer layer of sound-proofing material (14) and includes a cable insertion slot (12). Said sheath further includes...
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WO/1997/033117A1 |
A multilayer pipe having improved resistance to rapid crack propagation is described. The pipe consists of at least two layers of different propylene plastic materials, which are so selected and combined that the pipe has a resistance to...
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WO/1997/033116A1 |
A multilayer pipe with improved resistance to rapid crack propagation is described. The pipe consists of at least two, preferably three layers of different polyolefin plastic materials, which are so selected and combined that the pipe ha...
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WO/1997/019286A2 |
The invention concerns a pipe bend for feed pipes for feeding liquids or gases which may possibly be laden with solids. According to the invention, there is provided a preferably straight centre bend segment (2) of which the outer intern...
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WO/1997/015775A1 |
Fire resistant pipes and pipe fittings include a structural pipe wall (12) d from helically wound reinforcing fiber (14) that is bonded together with a thermoset polymer resin (16). First embodiment pipes include a fire resistant layer (...
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WO/1997/002945A1 |
A sandwich structure has a core which comprises an array of core units (3) that are arranged in a staggered pattern between the walls (1, 2) of the structure such that in a first direction (II-II) adjacent core units (3) are substantiall...
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WO/1996/010710A1 |
A screw joint of an oil-well pipe having a high seizure resistance. The threaded portion and metal seal portion of the pipe has a manganese phosphate chemical conversion treatment coating layer of 5 to 30 'mu'm thickness or a double-laye...
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WO/1996/009493A2 |
A refractory tile adapted for protecting boiler tubes from the corrosive and erosive effects of a hot gas stream comprises an elongated ceramic body covering only that side of a boiler tube upon which the hot gas impinges. The tile is hu...
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WO/1996/007530A1 |
A joiner for joining wound side edges of a liner strip wound helically along the inner surface of a pipe, which joiner includes a longitudinally elongated main body and a pair of engagement protuberance portions disposed on the outer sur...
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WO/1995/024433A1 |
A curable poymeric composition (6) which is a liquid at 20 �C and which comprises 25 to 60 % by weight of a resin component which comprises an epoxy, 5 to 25 % by weight of a curing agent which comprises two components, a first compone...
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WO/1995/021777A1 |
The invention relates to a method and an arrangement for closing of at least one end of a tube to protect the tube (8) against internal dirtying. According to the method a strip (5) comprising a number of plugs (4) is fed up to a positio...
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WO/1995/011542A1 |
A covering device including an elastic covering member (15) in a hollow cylindrical shape, having an inner diameter in a contracted state smaller than an outer diameter of a cable portion to be sealed, and a core (11) in a hollow cylindr...
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WO/1995/010465A1 |
A device (1) for closed systems such as silos, pipelines or the like, that allows for shock waves in the event of dust or gas explosions, has a lightweight hinged cover (3) that can swivel around a swivel axis on an outlet pipe (2). In o...
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WO/1995/006347A1 |
A seal (6) for cable splices (1) is formed of a first element with an adhesive external surface (10) and springy and/or elastic second element, which can store energy to maintain the first element in contact with a surface to be sealed.
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WO/1995/000328A1 |
A polyolefin-coated steel material, in particular, one excellent in the resistances to impact, flaw and abrasion due to drifts of sand and so forth, and usable in steel structures. The invention material comprises an undercoated steel ma...
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WO/1995/000679A1 |
A liquid anticorrosion composition adapted for application to ferrous tubular goods is provided comprising an aqueous solution of cyclohexylammonium benzoate and a benzoate salt which is preferably prepared by reacting cyclohexylamine wi...
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WO/1994/029631A1 |
A hose with a protector comprises a cylindrical-shaped hose body (10), a cylindrical-shaped protector (20) arranged coaxially with the hose body (10) to cover the outer circumferential surface of the hose body (10), and cylindrical-shape...
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WO/1994/029633A1 |
A portable, modular and easiliy applied protective pipeline covering (30, 32, 50, 70, 100, 120) which resists impact, penetration and tearing while providing an appearance which enhances visibility. In certain embodiments, a plurality of...
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WO/1994/028342A1 |
A multi-piece, pipe joint seal (18, 19) has a slidable interface (A) between seal pieces. The slidable iterface (A) allows for slippage between pieces during pipe joint assembly and disassembly, minimizing rotational and other stresses o...
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WO/1994/025791A1 |
A fire-resistant, filament-wound structural member (10, 20) made of a fibrous carrier (12, 22) impregnated with a curable resin containing a fire-resistant material. The fire-resistant structural member (10) is made using an underlying s...
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WO/1994/015138A1 |
A device for securing a pipe against fracture, comprising a sleeve-formed joint arranged around the location (13) of a pipe (12) which is to be secured against fracture. The joint is provided with a first member (10) and a second member ...
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WO/1994/012820A1 |
An improved thermally insulated, impact and abrasion resistant pipeline (10) and an impact resistant, flexible, cementitious material (20) which maintains low thermal conductivity when submerged and which is suitable for insulating under...
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WO/1993/025839A1 |
A protecting structure (2) for explosion vulnerable or combustible, elongated members (1) like hawsers, hoses, cables, pipes and similar comprises a movable system of successive, articulately connected and substantially cylindrical secti...
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WO/1993/023695A1 |
A fluid piping system is provided including a stepped conduit (14) having a transition portion (18) formed to define either a concaved or convexed outer surface relative to the axis (22), wherein the transition portion (18) inhibits rupt...
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WO/1993/020002A1 |
The invention relates to a conveyor for thick substances containing a great deal of solids and having a conveyor pipe (20) which can be filled with the thick substances under pressure and at least one injection point (22, 24) opening int...
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WO/1993/020382A1 |
Known metal pipes with inner and/or outer linings have the disadvantage that the fit between supporting pipe (1, 2, 3, 8, 9, 10, 20) and inner pipe (5, 14, 15, 21) or outer pipe (16), as well as the sealing of the individual pipes, which...
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WO/1993/014253A1 |
Wraparound sleeves formed by weaving, knitting or braiding for the protection of elongated articles, such as cables and hoses, are disclosed. In all embodiments, the sleeves are provided with closure means comprised of interlaced bulky m...
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WO/1993/013352A1 |
The invention provides that where a main underground pipeline or passageway (10) is lined by means of a lining tube which extends over the connection of a lateral pipe (12) with the main pipeline or passageway (10), the said lateral conn...
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WO/1993/000212A1 |
The invention relates to a method of coating a plastic pipe with a surface layer and a plastic pipe coated with a surface layer. The surface layer (12) is formed of plastic upon a pipe (13) into a protective coating by a suitable coating...
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WO/1992/019903A1 |
A fire safety coating, particularly intended to be used on hydrocarbon-conducting steel piping (1) in the splash zone beneath oil plants at sea, consist of at least four layers, where the outer layer (5) is a mechanical protection layer ...
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WO/1992/019431A1 |
In accordance with the invention, a concrete conduit (2) is completely encased within a shell (3) of a plastic resin such as polyethylene. The plastic shell (3) functions to insulate the concrete conduit (2) from mechanical shocks thereb...
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WO/1992/011997A1 |
A wraparound heat shrinkable sheet for covering pipes or cables is positioned therearound so its longitudinal edges overlap. A first patch is then positioned over the lapped edges, and a second patch, which is wider than the first patch,...
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WO/1992/006055A1 |
What is concerned is a process for treating water-conveying systems to seal the surfaces of cement-bound materials. Here, the aim is to seal the material surfaces against the release of their components like sand or fibres into the water...
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WO/1991/014896A1 |
A soft lining process lining tube is made up of an inner layer with one or more reinforcement layers wrapped there around. The or each reinforcement layer is wrapped so that the edges thereof overlap and the said overlapped edges may be ...
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WO/1991/013559A1 |
A method of producing a tubular lining material for use in soft lining processes comprising forming the first web absorbent material into a tubular form by folding the web in two so that web edges come face to face, followed by sewing th...
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WO/1991/008372A1 |
An oil carrying pipe for an oil rig riser comprises an anti-corrosion covering (2), a fire protection covering (3) over the anti-corrosion covering (2) and an outer coating (4) to retain the fire protection cover (3) in place. A field jo...
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WO/1991/008417A1 |
The invention enables damaged joints where secondary sewer pipes join main sewers to be rapidly, inexpensively and reliably repaired without the need to expose the damaged part by excavation. An applicator (1), connected up to a pipe-rep...
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WO/1991/006145A1 |
A safety device for protecting concealed wires and pipes comprises a galvanised steel plate (10) with four triangularly shaped, pointed prongs (14) stamped outwardly therefrom to project perpendicularly to the plane of the plate.
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WO/1990/008915A1 |
An early warning system for a material transfer system having an area to be monitored for internal wear caused by erosive flow action between the area and a transfer material. An inner container or conduit defines the monitored surface a...
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WO/1990/001671A1 |
A crack growth limiter (1) consists of a pipe section (5) with insertions (6) of elongate form built into its walls and oriented at an angle to the expected crack growth direction. The insertions (6) are made of a material whose strength...
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WO/1989/008214A1 |
A well tube liner system includes rigid, self supporting plastic liners (12) inserted within well tube sections (10) and including end flanges (18) adjacent opposed ends of the tube sections for sealing against each other and against a c...
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WO/1989/005939A1 |
The invention concerns a constructional element made of plastic, the walls of which contain hard material to prevent grawing by rodents. The hard material has a hardness of at least 9 on the Mohs' hardness scale. Also described is a coup...
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WO/1989/002050A1 |
Root repelling pipe joints are used to prevent intrusion of root into underground pipelines. The joints comprise an annular member formed of an organic polymer mixed with an effective amount of a dinitroaniline. The dinitroaniline slowly...
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WO/1989/001253A1 |
A polymeric tape intended for use underground near service lines with a biocide incorporated into the polymer. The biocide's presence in the tape after burial discourages vegetative, fungal or other biological growth near the tape. Speci...
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WO/1988/006557A1 |
A novel process and system is provided for protecting such oil field tubular goods such as subs, drill pipe, casings, tubing, drill collars, line pipe and the like (10) having threaded or machined end coupling portions (12, 13), against ...
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WO/1987/004768A1 |
Combined weight- and insulation casing for subsea pipelines (1) and method for production of the casing. The casing is applied by extrusion of thermoplastics on to the pipes. This makes it possible to produce continuous lengths of insula...
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