Matches 251 - 300 out of 439 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
5400827 Metallic sleeve for bridging a leakage point on a pipe  
A metallic sleeve for bridging a leakage point on a pipe is expanded onto the inner wall surface of the pipe with the aid of an expansion technique. During the expansion process, a gap of...
5397513 Method for installing a length of substantially rigid thermoplastic pipe in an existing conduit  
A thin, flexible tubular membrane provides a heat containment tube for inserting into and inflation within an underground conduit to be repaired. Folded rigid thermoplastic pipe is inserted into...
5388616 Invertible liner for internal surfaces of fluid conveying pipes and the like  
An invertible tubular substrate of resin-permeated fibrous material is surrounded by an impermeable tubular film which, in turn, is surrounded by an impermeable tubular calibrating element. One end...
5385173 Pipe liner composition  
A polymeric pipe lining composition consisting of 100 parts by weight of polyvinyl chloride, 0.5 to 3.5 parts of stabilizer, 5 to 30 parts of plasticizer, 0.4 to 2.0 parts of internal lubricant or...
5380131 System for corrosion protection of marine structures  
A system of corrosion protection and a method of applying the protection on items to be used or being used in marine environments and otherwise susceptible to the deleterious effects of erosion...
5372162 Repair device for the in situ repair of pipes, and a method of repairing pipes  
A repair device for the in situ repair of a pipe comprises an assembly of at least four short cylindrical, inflatable members 1, 2, 3, 4, which are interconnected by articulated rods 5 which are...
5358994 Thermoplastic material for production and repair of polymeric products and coating of metals  
A composition of matter comprises 100-800 parts by weight polyethylenes and copolymers thereof having a melt index of 1-4 g/10 min., a density of 0.93-0.95 g/cc and a weight average molecular...
5351720 Apparatus for repairing conduits  
Method and apparatus for internal repair of conduit system. An inner sleeve is employed which is configured to avoid undue pressure being applied to the inner surface of a damaged conduit section...
5335872 Protective core  
A protective core for protecting the internal surface of a coil of strip material comprises, a cylindrical wall (5) formed from sheets (7, 9) of plastic material separated by webs (11) moulded...
5333649 Plug for blocking a branched pipe opening  
An apparatus for blocking the openings of a branched pipe (2) in a branched portion of a pipeline (1) prior to lining the inner surface of the pipeline (1) with a tubular lining material (100) for...
5329063 Liner assembly for lining branch pipes and a method for manufacturing the liner assembly  
A lining assembly for lining the inner wall of a branch pipe connected to a main pipe having a flexible tubular resin-impregnated liner that has one end externally reversed to form a collar to fit...
5322653 Method of repairing buried sewage pipes  
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),...
5309947 Apparatus for lining an inside wall of a sewer pipe  
An extruder drivable for displacement by moving devices is provided for sewer pipe reconstruction and has a radial nozzle applying by extrusion a thermoplastic tube to the inside wall of a sewer...
5305798 Two-wall leakage detection system for a pipe  
An elongated fluid detection device, together with a body of absorbent material, is located between the inner surface of a pipe and an impervious liner spaced from the inner surface thereof, the...
5301719 Fluoroelastomer lined flue ducts  
A flue duct liner comprising a substrate and a fluoroelastomer provides excellent protection against corrosive gases and easy installation.
5297582 Method for water leakage prevention in pipeline  
A method for water leakage prevention in a portion connecting a first pipeline to a second pipeline having one end thereof in communication with a portion of the first pipeline is provided. This...
5287893 Head for replacing mains  
A method is provided for replacing a length of a branch gas main 1 joined to a spine main 2 with a length of replacement main 7 having an outer diameter smaller than the inner diameter of the...
5282494 Replacement main having nozzle and vanes  
A method is provided for replacing a length of a branch gas main 1 joined to a spine main 2 with a length of replacement main 7 having an outer diameter smaller than the inner diameter of the...
5280811 Method of softlining sewer rehabilitation  
The present invention provides a novel method for softlining rehabilitation of pipe conduits in which the lining hose comprises an inner layer of resin-absorbing material and an outer layer which...
5271433 Hose for lining pressure pipe lines  
A hose for lining pressure pipe lines is described comprising a web being made up of warp and woof threads, which are made of plastic, as well as a coating of thermoplastic material, which coating...
5265647 Apparatus for transferring line travel device from one pipeline section to another  
A plug (10) is disclosed which is clamped to the end of a first pipeline section (14) being worked on by a line travel device (12). The line travel device (12) can completely perform its operation...
5265648 Pipe liner and method of installation thereof  
A liner for a pipe comprises a pair of imperforate sleeves telescoped within one another and having a resin absorbant fiber mat and resin supply tube disposed therebetween. A polymerizable resin is...
5263515 Device for repairing a tube  
A threaded rod (40) extends through two blocks (20, 22). Each block (20, 22) has a bore. The bore of the first of the two blocks (20) is not threaded and is prevented from moving when the threaded...
5261461 Pipeline rehabilitation articulated gasketed-joint pipe  
A liner pipe comprising sections of polyethylene pipe connected by articulated gasketed joints of bell and spigot design which are specifically adapted for ease of compression lining of large...
5241993 Method for grouting cavities using a pumpable cement grout  
A pumpable cement grout and method for use thereof for grouting annular cavities. The pumpable cement grout is a mixture of a hydraulic cement, water in an amount sufficient so that the...
5230842 Interior pipeline coating process  
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,...
5224742 Method for cutting off water in pipeline and structure of connection portion in pipeline  
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...
5203377 Method of repairing a pipeline and apparatus for use in such a method  
A method of repairing a pipeline and apparatus for use in such a method is disclosed where a sheet like repair material is set in position within the pipeline with the use of a settable substance,...
5199463 Method for remotely lining conduits  
A conduit is lined by pressing a liner into contact with the conduit and making it self-supporting. It is transported to the working site (at which its two ends are not at manholes or excavations...
5186215 Apparatus for repairing pipelines  
Pipeline repair and leak sealing are effected by unrolling a tube, using an inflatable mandrel disposed inside the tube, to radially expand a stretchable and circumferentially continuous gasket or...
5167258 Re-lining of sewers  
A sewer (1) is relined by introducing a flexible tubular waterproof membrane (4) and then inserting a pipe or pipe length (5)(5a)(5b) into the tubular membrane (4). Grout (10) is then introduced...
5163481 Tubular liner for softlining pipe rehabilitation  
A tubular liner for use in softlining methods of pipe rehabilitation. The tubular liner is constructed of plastic materials or laminates of plastic material having one or more resin-absorbing...
5148837 Pipe for relining underground pipelines  
Pipe for relining underground pipelines, which is of the composite type having an annularly rigid corrugated outside wall (10) of polymer material, which is connected to the outside surface of a...
5147697 Polyvinyl chloride pipe for the inner lining of existing pipes  
A polyvinyl choride resin pipe serves as an inner lining material for the existing pipes. The resin pipe is formed of a resin composition which comprises as a main component either a polyvinyl...
5119862 Conduit repair apparatus  
A pipe repair sleeve and liner with interlocking elements in a form of a coiled sheet which is covered with compressive gasket. An air bag is inserted into the coiled sleeve and moved to the...
5101863 Rehabilitating underground pipes with expanding helically wound liner  
A method of rehabilitating underground pipes which comprises the steps of: (a) forming a liner pipe (5) by winding a strip (4) made of a synthetic resin into a helical shape so that the side edges...
5098628 Centrifugal molding method for composite pipe having a resin concrete layer  
A centrifugal molding method which can smooth the inner surface of the resin concrete layer of a resin concrete pipe or of a composite pipe having a resin concrete layer even without using any...
5092367 Asymmetrical skid assembly  
A skid assembly for supporting a packer or the like in a pipeline includes three skid blades of different configuration whereby the radial apex of each blade is longitudinally offset from the...
5086809 Pipe coupling and sealing device  
A pipe coupling includes a cylinder with an axial joint and a sealing device for sealing the fluid pathways between a leak location and the outer surface of the coupling. The sealing device...
5079837 Repair lining and method for repairing a heat exchanger tube with the repair lining  
A repair lining for a heat exchanger tube includes a sleeve having ends. A tubular basic body is disposed in the sleeve and has ends protruding beyond the ends of the sleeve. One of the ends of the...
5079824 Method for the installation of a jacket reinforcement for piping  
A jacket for reinforcement of piping, and especially petroleum piping, including a jacket, joint elements between the jacket and the conducting piping, resin disposed in the space between the...
5066208 Pipe joint testing and grouting unit  
A pipe joint pressurizing unit for testing pipe joints and grouting pipe joints with grout, the pressurizing unit having a rigid cylindrical core member with an expandable rubber sleeve mounted on...
5063967 Pumpable cement grout  
A pumpable cement grout and method for use thereof for grouting of annular cavities. There is a pumpable cement grout having portland cement, water in an amount sufficient so that the...
5060696 Plastic pipe comprising an outer corrugated pipe and a smooth inner wall  
A plastic pipe consisting of an outer corrugated plastic pipe and an inner smooth wall consisting of a wear resistant elastomer, particularly a thermoplastic rubber fixed in the inner bottoms wave...
5056282 Injection hose for joints to be sealed in concrete works  
An injection hose for joints to be sealed in concrete works comprises a flexible, liquid-impermeable supply hose element for injection fluid and having an injection region provided with a plurality...
5052445 Pipe section, especially for abrasive and/or corrosive material pipelines  
A pipe section of an outer metallic pipe and a nonmetallic inner lining is provided so that the lining can be removed. To this end, the lining consists of lining segments, the terminal members of...
5044405 Method and apparatus for repair-lining of short sections of pipe  
To facilitate the repair of short sections of pipe by providing a lining in situ, a repair carrier containing the repair lining is moved into position adjacent the pipe length to be lined, the...
5042532 Expandable tube apparatus for repairing pipelines  
Pipeline repair and leak sealing are effected by unrolling a tube, using an inflatable mandrel disposed inside the tube, to radially expand a stretchable and circumferentially continuous gasket or...
5040283 Method for placing a body of shape memory metal within a tube  
A body of shape memory metal is placed within a tubing by a running sub which transports the body to a desired location within the tubing while the shape memory metal is in its martensitic phase...
5033512 Replacement pipe section for a defective pipeline  
A replacement pipe section for a defective pipeline that includes two tubular members telescopically assembled so that the assembly has an adjustable overall length. The replacement pipe section...
Matches 251 - 300 out of 439 < 1 2 3 4 5 6 7 8 9 >