13148results about "Rigid pipes" patented technology

A labor saving system, method, and apparatus for connecting or coupling lengths of electric metallic tubing (“EMT”). The invention uses couplings/connectors that have barbs that are designed to engage corresponding indentations on EMT to ensure proper installation. In one aspect, the invention is an EMT having: an EMT inner surface forming an EMT cavity; an EMT outer surface; an EMT first end; and at least one indentation in the EMT outer surface at or near the EMT first end, the indentation adapted to receive a corresponding barb from a sleeve device. In another aspect, the invention is a sleeve device comprising; a sleeve inner surface forming a sleeve cavity adapted to receive an end of an EMT; a sleeve outer surface; a first sleeve end; at least one barb on the sleeve inner surface at or near the first sleeve end, the barb adapted to engage a corresponding indentation on the EMT.

PCT No. PCT/JP95/02034 Sec. 371 Date May 23, 1997 Sec. 102(e) Date May 23, 1997 PCT Filed Oct. 4, 1995 PCT Pub. No. WO96/10710 PCT Pub. Date Apr. 11, 1996An object of the present invention is to provide galling resistance to a threaded joint used for an oil well pipe. On a thread portion and a metallic sealing portion of the joint, there is provided a manganese phosphate chemical formation coating layer, or alternatively there are provided a nitriding layer of 1 to 20 mu m thickness and a manganese phosphate chemical formation coating layer of 5 to 30 mu m thickness, and also there is coated a solid lubricant which contains powder of molybdenum disulfide or tungsten disulfide and also contains one of epoxy resin, furan resin and polyamide resin as an essential component, and a ratio of composition is maintained at a specific value, so that a solid lubricant coating layer of 10 to 45 mu m thickness can be formed by heating. Due to the above surface treatment, even when the frequency of repetition of fastening and unfastening of the joint is increased, the occurrence of galling can be prevented over a long period of time.

A sheath useful for remote steering, guidance and/or manipulation of a flexible instrument, including e.g. an endoscope, received through the sheath.

A gas sampling line having a channel for conducting respiratory gases from a patient respiratory interface to a gas monitor, the gas sampling line comprising, i.a., a gas sampling tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide. Use of a tube comprised of a polyether block amide material, the polyether segments of which comprise polyethyleneoxide, for sampling of respiratory gases; and a method for sampling of respiratory gases, the method comprising conducting respiratory gases through such a tube. A gas analysis system for analysing respiratory gases, comprising a gas sampling line as defined above and a gas monitor connectable to the gas sampling line.

A composite multi-layer barrier is produced by first vapor depositing a barrier under vacuum over a substrate of interest and then depositing an additional barrier at atmospheric pressure in a preferably thermoplastic layer. The resulting multi-layer barrier is then used to coat an article of interest in a lamination process wherein the thermoplastic layer is fused onto itself and the surface of the article. The vacuum-deposited barrier may consists of a first leveling polymer layer followed by an inorganic barrier material sputtered over the leveling layer and of an additional polymeric layer flash evaporated, deposited, and cured under vacuum. The thermoplastic polymeric layer is then deposited by extrusion, drawdown or roll coating at atmospheric pressure. The resulting multi-layer barrier may be stacked using the thermoplastic layer as bonding agent. Nano-particles may be included in the thermoplastic layer to improve the barrier properties of the structure. A desiccant material may also be included or added as a separate layer.

A guiding catheter for use in coronary angioplasty and other cardiovascular interventions which incorporates a plurality of segment of selected flexural modulus in the shaft of the device. The segments which have a different flexibility than the sections immediately proximal and distal to them, creating zones in the catheter shaft which are either more or less flexible than other zones of the shaft. The flexibility and length of the shaft in a given zone is then matched to its clinical function and role. A mid-shaft zone is significantly softer than a proximal shaft or distal secondary curve to better traverse the aortic arch shape without storing too much energy. A secondary zone section is designed to have maximum stiffness to provide optimum backup support and stability.

In an umbilical, one or more steel rods, which provide strength and ballast, are wound helically within the umbilical along with the steel tubes and/or elongated active umbilical elements. These steel rods replace some or all of the thermoplastic filler elements that would otherwise be included within the umbilical. An umbilical according to an embodiment of the invention may include a plurality of steel tubes helically wound around a core, and at least one substantially solid steel rod helically wound around the core, the steel rod being arranged in a void between the steel tubes. Thus, the invention avoids the need to apply additional armoring layers to the outside of the umbilical for strength and ballast.

A metallic material of the invention which comprises, in mass %, C: not more than 0.2%, Si: 0.01-4%, Mn: 0.05-2%, P: not more than 0.04%, S: not more than 0.015%, Cr: 10-35%, Ni: 30-78%, Al: not less than 0.005% but less than 4.5%, N: 0.005-0.2%, and one or both of Cu: 0.015-3% and Co: 0.015-3%, with the balance substantially being Fe, and of which the value of 40Si+Ni+5Al+40N+10 (Cu+Co), wherein the symbols of elements represent the contents of the respective elements, is not less than 50 and has excellent corrosion resistance in an environment in which metal dusting is ready to occur and, therefore, can be utilized as or in heating furnace pipes, piping systems, heat exchanger pipes and so forth to be used in a petroleum refinery or in petrochemical plants, and can markedly improve the equipment durability and safety.

A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

A multilayer plastic composition having (I) an outer layer of a thermoplastic molding composition and (II) an inner layer of an electrically conductive thermoplastic molding composition containing graphite fibrils, which are useful for the transport of (petro)chemical materials and also in the motor vehicle sector for conveying brake, cooling and hydraulic fluid and also fuel.

A thermoplastic elastomer composition which, when used for the inner tube and/or outer cover of a hose, can improve the hose flexibility at an ordinary temperature and low temperature, oil resistance, and cold resistance and can reduce the production costs since it does not require a vulcanization step and a hose having said properties using this elastomer composition for its inner tube and/or outer cover and a process and apparatus for the production thereof.

A camera device comprises a movable optical system, a driving unit which drives the optical system, and a control unit which makes the driving unit start driving of the optical system to a predetermined state by an initialization of the optical system by using an interrupt processing which is executed by setting an interrupt processing routine before the operating system is started, when the camera device is started up in a state in which an operation mode for photographing is set.

The invention is directed to an article with a liquid-impregnated surface, the surface having a matrix of features thereupon, spaced sufficiently close to stably contain a liquid therebetween or therewithin, and preferable also a thin film thereupon. The surface provides the article with advantageous non-wetting properties. Compared to previous non-wetting surfaces, which include a gas (e.g., air) entrained within surface textures, these liquid-impregnated surfaces are resistant to impalement and frost formation, and are therefore more robust.

A respirator system and hygroscopic hose used in the system is disclosed. The system includes a means for generating a flow of air, a hose connected to the generating means and a mask adapted to be secured to a patient. The mask connected to the hose such that air generated by the generating means passes through the hose to the mask. The hose is a hygroscopic hose made up of a thermoplastic polyurethane. The thermoplastic polyurethane permits water formed by the respiration of the patient to permeate through a sidewall of said hose from an inner surface of the hose to an outer surface of the hose. The sidewall of the hose does not permit air generated by the generating means to pass through the sidewall.

An exhaust tip for attachment to a tailpipe that includes a thermoset heat shield at least partially surrounding and fastened to the tailpipe, and a thermoplastic decorative cover at least partially surrounding and fastened to the thermoset heat shield. The thermoset heat shield insulates the thermoplastic decorative cover from thermal effects of the tailpipe and spaces the thermoplastic decorative cover a predetermined distance away from the tailpipe.

A packaging laminate having an integrated polyolefin layer is disclosed wherein the polyolefin is integrated with a nanometer size particle of clay. The nanometer size particles may have a thickness of 0.9 to 100 nanometers, and an aspect ratio of 100 to 2000. The clay particles compose only 0.1 to 10 weight percent of the polyolefin layer. The integrated polyolefin layer provides substantial barrier properties to the packaging laminate. The packaging laminate may be used for a pouch, a PET bottle, a parallelepiped container, a gable top carton, a blow moulded bottle, and other applicable containers for flowable foods such as juice, milk and cheese.

Numerous applications for hollow glass bodies made from low melting glass material require an increase in the chemical resistance of the interior surface of the glass body. In order to avoid a disadvantageous de-alkalizing process the hollow glass body must be provided with an interior coating in a comparatively expensive prior art process. In an improved process according to the invention a glass tube acting as a semifinished product from which the hollow glass body is made is provided with an interior coating of oxide material, preferably SiO2, Al2O3, TiO2 or mixtures thereof, having a predetermined coating thickness according to the required chemical resistance or working conditions for forming the glass body and then the hollow glass body is made from the glass tube. The coating is advantageously provided by means of a PICVD process.

Phosphorus-based coatings having a plurality of phosphate moieties, a plurality of phosphonate moieties, or both, covalently bonded to an oxide surface of an implantable substrate exhibiting one or more of the following characteristics: (a) the surface phosphorus-containing group density of the coated regions of the substrate is at least about 0.1 nmol/cm²; (b) the phosphorus-based coating has a thickness of less than about 10 nm; or (c) the surface phosphorus-containing group density of the coated regions of the substrate is equal to or greater than the surface hydroxyl group density of the oxide surface of the substrate. Implantable devices embodying the coated substrates are also disclosed.

Various embodiments of an umbilical are provided. In one aspect, an umbilical is provided that includes a first tube, a second tube positioned in the first tube and a plurality of third tubes positioned in the first tube. Each of the plurality of third tubes has an inner polymer sleeve and an outer sleeve of carbon fibers in an epoxy matrix positioned around the polymer sleeve. The composite tubes yield a lighter umbilical that is easier to handle than a comparably sized conventional umbilical incorporating steel inner tubing and is more tolerant of dynamic bending and hydrostatic pressure loading.

An internally insulated, corrosion resistant pipeline. An inner fluid barrier is formed preferably by a polymer liner. The outer pipe may be a steel pipe. The liner is provided with a plurality of passages or an open annulus. The passages in the liner or annulus between the pipe and liner are filled with an insulation material.

A firing jig for a honeycomb molded body includes a housing body configured to place a pillar-shaped honeycomb molded body including silicon carbide as a main component with a side face of the honeycomb molded body facing down, and a coat layer formed on at least a placing face of the housing body configured to place the honeycomb molded body thereon. A main component of the coat layer is silicon carbide, the coat layer having an arithmetic average height Ra of about 10 μm or less obtained in conformity with JIS B 0601 (2001).

A multilayer barrier structure includes a plurality of relatively thin nanocomposite layers separated by one or more relatively thick intermediate layers selected from synthetic elastomers or non-elastomeric polymers. The composites exhibit remarkably long breakthrough and lag-times and are useful for packaging or protective apparel.