Abstract: An insulated duct, for example for electric cables, comprises first and second co-operable members forming a duct therebetween and toggle clips to secure the first and second members together such that the first and second members are urged towards each other. Each member comprises a base of thermal insulation material and at least one wall portion of thermal insulation material extending from the base of at least one of the members. An external skin is provided on the thermal insulation material, and an internal lining is provided on the thermal insulation material. The thermal insulation material, the external skin and the internal lining of the first member are dimensioned substantially to abut against the thermal insulation material, the external skin and the internal lining respectively of the second member.

Abstract: This invention is a pipe support for a pipe covered by a cylindrical bat of insulation. The insulated pipe is suspended by a pipe hanger having a clevis extending round and beneath the pipe. The pipe support comprises an upwardly concave saddle engageable with the underside of the pipe within the insulation. A pipe support base is secured to the clevis and comprises a bracket fixedly secured to the clevis by a lock bolt; alternatively, a portion of the clevis may serve as the pipe support base. Top and bottom ends of a vertical connector are secured respectively to the saddle and to the support base. A vertical connector extends through the insulation at the bottom of the pipe. The ends of the connector are fixedly secured respectively to the saddle and to the support base. In one embodiment, the connector is a single shaft or rod. In another embodiment, the connector is a rod removably telescopically assembled within a hollow sleeve.

Abstract: A pipe fitting cover is provided for covering a pipe fitting which has been covered with insulation. The pipe fitting cover is a flexible, resilient, sheet formed in a shape generally corresponding to the external shape of the pipe fitting and larger than the external shape of the pipe fitting to accommodate insulation between the pipe fitting and the pipe fitting cover. The sheet has a hole intermediate the ends of the sheet. A clear window insert is secured in the hole whereby insulation covered by the pipe fitting cover can be viewed with the pipe fitting cover in place on the pipe fitting.

Abstract: A rigid fiber glass air duct for conveying an airstream has an interior surface, adapted to be in contact with the airstream, which is coated with a polymeric coating with an organic biocide. The polymeric coating has a dry solids content of between 10 and 20 grams per square foot of duct board surface and retains its abrasion strength and puncture resistance whereby the interior surface of the duct can be cleaned by conventional industrial or commercial cleaning methods while in service without exposing glass fibers to the airstream.

Abstract: Roll designs for roller hearth furnaces operating at temperatures ranging from under 1200.degree. C. to substantially higher are disclosed. A rotary mounted main roll body may be provided with a plurality of spaced tires for contacting and transporting a charge carried by the roll. An internal coolant circulation system is provided within the main roll body. Insulation may be provided around the main roll body.

Abstract: A vessel for use in the transportation of cryogenic liquids in over the road cryogenic tankers has a double wall with a highly efficient, relatively light weight fiber glass insulation in the cavity between the walls. The fiber glass insulation increases in density from the inner wall of the cavity to the outer wall of the cavity having the least density adjacent the cold inner wall of the vessel which contains the cryogenic liquid and the highest density adjacent the outer wall of the cavity which is exposed to ambient conditions. One or more layers of reflective septa can be incorporated into the fiber glass insulation to reduce radiant heat transfer.

Abstract: A drainage circuit surrounding a hydraulic circuit, such as a circuit for distributing drinking water on an aircraft, includes an element around one enlarged portion (right connector, T, Y connector, etc) of the hydraulic circuit, namely a draining unit (20) formed of two half shells (24, 26) and tubular joining pieces (28). Imperviousness between the two half shells and between the half shells and the joining pieces is ensured by projecting portions (36, 38) which penetrate into a humidity-repellent stabilized gel (40) placed inside receptacles (42, 44). In addition, clipping members (48, 50) are provided on the half shells.

Abstract: A heat resistive sleeve (10) is capable of surrounding conduits, hoses and the like. The heat resistive sleeve (10) includes one outer layer (20) and, if necessary, a plurality of inner layers (12, 30, 38), all of which are fabricated of interwoven fiberglass yarns. To increase the insulating properties of the fiberglass, fibers of a second outer fiberglass yarn (24) are braided together to form a solid braid (26) having a radial thickness (T2) greater than the radial thickness (T1) of a first outer fiberglass yarn (22). A second inner layer (30) includes a first untextured fiberglass yarn (32) interwoven with a third textured fiberglass yarn (34), the textured fiberglass yarn (34) being less dense and having a radial thickness (T3) greater than the radial thickness (T1) of the untextured fiberglass yarn creating additional spaces (36) which further increase the thermal insulation of the heat resistive sleeve (10).

Abstract: An assemblage and method for covering the terminal end of an insulated pipe.

Abstract: A fire resistant plastic structure comprises a pair of parallel walls, wherein the spacing between the walls is filled with an array of mutually spaced strut elements, thereby providing a flow path for a cooling fluid throughout the spacing.

Abstract: Annularly ribbed tube comprises one or more coaxial co-extruded inner layers and a coaxial outer layer of thermoplastic material. The tube has sharply upstanding annular or helical ribs having a width which is small in comparison to distance between annular ribs or between turns of the helix. At least one of the inner layers of extrudate fills a hollow outer shell of each rib which is formed by the outer layer. An innermost layer may be a smooth inner skin or may have a smooth inner wall and another wall which bulges into the rib cavity.

Abstract: A device for locking refractory insulation members on support elements in a heat treating furnace, boiler or other piping has a first strap end with a ramp and a second strap end with a raised bearing tab. The ramp engages the bearing tab with an interference-fit to capture the first strap end on the second strap end. The first embodiment of the invention includes a hook insertable in a window. The hook has a deflectable ramp with a bearing edge which engages a lock surface on the raised bearing tab to lock opposing strap ends to one another. The second embodiment of the invention includes an angled edge on the first strap end which engages the raised bearing tab on the second strap end. The first and second strap ends have opposing slots. The first strap end includes a notched back which, when the opposing slots are fully interengaged, receives the bearing tab to capture the first strap end on the second strap end.

Abstract: A flexible pipe with improved thermal protection in which a fluid is liable to flow under pressure and comprising at least one tightness sheath or tube of polymeric material, at least one reinforcement therein further comprises as thermal protection, a sheath of composite material comprising cork granules and a flexible metal tube which is disposed outside said sheath of composite material. Application notably to flexible pipes for oil installations.

Abstract: An assemblage and method for covering the terminal end of an insulated pipe.

Abstract: A composite plastic duct structure comprised of an outer layer of fabric material impregnated with a fire-resistant resin material and an inner liner layer of chemically corrosion resistant resin material impregnated with a fabric material. The invention includes a method wherein multiple wrappings of resin impregnated material are wound on a mandrel to form the inner and outer layers.

Abstract: A compact, easily used, high quality sealing plug for use with ultrasonic testing equipment which incorporates a single annular body with an indented diaphragm portion, two lips, an annular vertical wall extending upwardly from said indented diaphragm portion of said single circular body with two annular lips extending outwardly therefrom, one at the upper end of said annular wall and the other therebelow so that when said seal is in use, the upper lip will maintain a position above the insulation material in which the seal is placed, while the lower lip will be below said outermost surface, both lips counteracting each other to maintain tension therebetween and the present invention from becoming unintentionally dislodged from its location. Alternative embodiments of the present invention are also disclosed which include alternative lip arrangements for alternative sealing needs and desires.

Abstract: A double-layer pipe bend for a pipeline includes an inner pipe of cast steel, an outer pipe of weldable steel surrounding the inner pipe, and connecting flanges at the ends of the pipe bend. The connecting flanges are welded to the outer pipe. The inner pipe and the outer pipe are formed such that a pressure-compensating layer can be formed by the transported medium between the pipes. Another pressure-compensating layer can form between an inner wearing ring and an outer coupling ring of each connecting flange. The wearing ring and, thus, the inner pipe, is axially secured by a groove in the wearing ring and a radial collar in the coupling ring.

Abstract: An insulated structure, typically a drum, can initially have an outer uninsulated wall of heat conductive material. The outer wall, such as the outer cylindrical wall of a drum, may then be insulated with insulation supplied as panels. Each panel covers a part of the surface, e.g., extends part way around a portion of the circumference of a drum. Each panel connects, end-to-end, to at least one other insulation panel. Adjacent panels are advantageously joined end-to-end by adjustable joining means. Each panel has an outer metal sheet, such as of galvanized steel. This sheet has an inner layer of ceramic fiber insulation bonded to it. In addition to being attached to each other, panels may also be secured to the wall.

Abstract: The present invention relates to a transportation pipe or conduit (10, 20, 30) which preferably is adapted to be installed on the seabed between a permanent or floating off-shore platform (3) and an on-shore terminal (4). The transportation conduit comprises an inner tube or pipe (21, 31) which primarily is constructed for the transmission of gas and/or oil or similar, a plurality of elements (23, 33) provided preferably as a layer outside the pipe (21, 31) and being adapted for transmission of preferably electric power. The elements (23, 33) which preferably might be made of copper or another material of appropriate electric conductivity, is insulated against the outer environment, for example by means of an appropriate thermal insulation material (24, 34). The inner tube (21, 31) might be manufactured from steel or a flexible material of considerable strength, and be surrounded by a corrosion preventing layer (22, 32).

Abstract: Flexible piping includes a first, spiral-wound band forming an inner winding and a second, spiral-wound band forming an outer winding in covering relationship over the inner winding. Inner and outer spiral-wound bands of insulating material are wound between the inner and outer windings and over the outer winding respectively. An insulating sleeve receives the spiral-wound inner and outer windings and the inner and outer insulating material bands. A method and a machine for forming the flexible piping are also disclosed.

Abstract: The present invention relates to a system of adjustable preformed ductwork for the conveyance of a fluid. The system uses a distribution box which includes an upper portion having a plurality of walls and a bottom plate. The distribution box may act either as a diffuser boot or as a splitter box. The distribution box is joined to interconnecting duct lines by adaptor conduits. The adaptor conduits are duct line which are adapted at one end for connection to an opening in a wall and are adapted at the other end for connection to adjoining duct line. A valve having a housing, a first cone and a second cone is also included in the system either in a duct line or in an adaptor conduit. The first and the second cone have matching apertures. The second cone is rotatable within the first cone such that the matching apertures may be selectively aligned or misaligned to adjust the flow of the fluid through the ductwork system.

Abstract: An insulation sheath for a pipe in a furnace is provided. The sheath has excellent insulation properties together with adequate resistance to the corrosive environment and thermal shock conditions. A pre-formed, substantially C-shaped, elongate member shaped to conform to the pipe over a portion of its circumference, the member comprising an inner layer of bonded insulating material integrally-bonded to a protective outer layer of refractory material. The inner layer is preferably formed of bonded ceramic fibre.

Abstract: A method for preparing watertight and fireproof cable ducts through walls and ceilings. Cables are inserted into shaped parts, spacing the cables in the plane of the cable duct's frontal area. The remaining spaces between the wall of the cable duct and the spacers are filled with pieces of the same material. The modules used to construct the frontal walls include fibrous insulating material, such as long-fiber fiber glass insulating material or rock wool.

Abstract: A unitary pipe insulation and shield assembly of upper and lower partially cylindrical insulation elements defining a cylindrical pipe receiving cavity, a surrounding water repellant jacket having an integral hinge, and channel ring clamp elements fastenable together, the insulation elements, jacket and clamp elements being secured together to form a clamshell arrangement extendable about a pipe to snap fasten the clamp elements together.

Abstract: A concrete structure is lined with a statically self-supporting glass shell composed of shell segments which are themselves joined together by sealing strips. In a pipe embodiment of the invention, the shell segments form a ring spaced from the concrete body with the spacing being filled by a backfill mass so that a compressive prestress is provided to the arch shape. When used in a container, the shell may be a laminate of two or more glass layers bonded full surface together.

Abstract: A conduit and method of making a conduit for an underground conduit system, where the conduits are protected from ultra-violet rays, the conduit system being able to transport and insulate a variety of materials including, but not limited to, fluids and wires. The assembled conduits being able to be located underground to support the weight of the soil without crushing the insulating layer and thus destroying the insulating qualities of the insulating layer. The assembled conduits coact to protect the interior of the conduit system from moisture located radially outward of the conduit system.

Abstract: A fire-proofing protective covering for an elongate structure such as a hose, an electrical or optical cable, or pneumatic or hydraulic ducting, comprises: a first plurality of layers made of an inorganic material having a structure which is suitable for imprisoning air while still allowing the operation of the elongate structure to be maintained at relatively high temperatures, of the order of at least 850.degree. C., and for a given length of time, of the order of at least several minutes, and a second plurality of layers, with each of the layers being disposed alternately relative to each of the layers of the first plurality so that the layers of the first plurality are on the inside while the layers of the second plurality are made of a material which substantially constitutes a barrier for the air imprisoned in the corresponding layer of the first plurality. The invention is applicable to the opto-electrical industry, to the hydraulic industry, etc. . . . for protecting ducting from fire.

Abstract: A method for insulating a pipe, including skid pipes for walking beam and pusher type furnaces and the well known over-and-under skid pipe, including providing an appropriately contoured anchor band which can be applied around the pipe, the two ends secured together, each anchor band having a plurality of outwardly projecting prongs. A ceramic fiber blanket is applied around the exposed part of the pipe and then a pliable refractory material is applied around the blanket so that the prongs extend through the blanket and sufficiently into the pliable refractory material to support the refractory material around the pipe. Preferably a preformed insulator laminae comprising a ceramic fiber blanket, a pliable refractory material and a plastic-like film between and secured to them is applied to the prongs to reduce installation time.

Abstract: A thermal insulation blanket for enclosing or draping a compound curved surface or a generally cylindrical pipe or conduit includes a first plurality of strips of insulation material comprised of an alternating pattern of blocks of flexible insulation material and blocks of rigid insulation material and a second plurality of strips of insulation material comprised of flexible insulation material is alternated with the first plurality of strips. The blocks of material are adhesively joined together to create the first plurality of strips and the two pluralities are adhesively joined together to create the blanket.

Abstract: An automotive exhaust system incorporating an insulated exhaust pipe. The insulation is selected so that it is very efficient at relatively low temperatures, thereby allowing the exhaust gases to reach the light-off temperature of the catalytic converter in a short time, and less efficient at high temperatures, thereby maintaining the temperature of the exhaust gases below the level at which aging of the catalytic converter increases.

Abstract: A pipeline has an inner surface which comes into contact with cryogenic fluid at a temperature of 70.degree. K. The outer surface of the pipeline carries a coating of foamed polyurethane having closed cells containing carbon dioxide. The pipeline is located in an outer sleeve. The annular space defined between the pipe and the sleeve is filled with perlite powder and is able to be purged with dry nitrogen gas.In operation with the inner surface of the pipelines subjected to a temperature of 70.degree. K., the carbon dioxide in the cells of the polyurethane solidifies creating a vacuum therein. This increases the temperature difference across the polyurethane coating and enables the perlite powder to be maintained at a temperature above 77.degree. K. so that the nitrogen purgant does not condense. A relatively simple alternative to conventional vacuum insulation is thereby provided.

Abstract: A pipefitting cover specially designed to enclose an insulated Y-shaped joint is disclosed comprising two half sections, where one half section is adapted to interlock with the other half section while accommodating an additional pipe segment protruding at an angle from the first straight pipe segment.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a sleeve of stiff polymeric material disposed between the sleeve of reinforcing material and the inner corrugated hose and having an outer peripheral surface that is substantially straight-line smooth and continuous and substantially coplanar with the apexes of the projections and having an inner peripheral surface that substantially mates with and is disposed in engagement with the projections and the recesses from the one end to the other end of the inner corrugated hose.

Abstract: A cover for insulating exhaust systems of internal combustion engines comprising a tubular shaped layer of insulating material circumscribingly engaging the exhaust system and a flexible metal sleeve for protecting the insulating material and holding the insulating material against the exhaust system. The present invention is held in place using mechanic's wire or steel tie wraps such as a hose clamp. The present invention can also be varied for use in retrofitting existing exhaust systems. In this manner, the insulating layer and flexible metal sleeve are made of sheet material which can be wrapped around the installed exhaust system without necessitating removal of the system.

Abstract: A length of pipe insulation is provided, that has a longitudinal slit that enables it to be positioned over a pipe that is to be insulated. A facing material is provided on the exterior of the generally tubular shaped insulation material. The facing material on one side of the slit has a somewhat adhesive-resistant material that lends itself to an adhesive strip not being permanently secured thereto, and a flap of facing material extends across the opening, having an adhesive flap portion generally in overlying relation to the somewhat adhesive-resistant material. The flap is capable of being extended by grasping it and moving it such that the adhesive portion extends further around the tubular shape to be able to engage the facing material, a securement strip holds the flap folded in a restrained fold but is capable of being broken when force is applied.

Abstract: This invention relates to a machine insulation jacket assembly which can be mounted on an injection heater barrel utilized in plastic molding machines that operate to handle high temperature molded plastic for forming the into molded plastic parts. The machine insulation jacket assembly includes a primary jacket assembly used in conjunction with an end cover jacket assembly to be mounted about and enclose the ejection heater barrel. The primary jacket assembly includes a main support body member interconnected in a mounted condition through a plurality of connector strap members. The main support body member is provided with outer and inner wall sections having an insulation body section mounted therebetween. The connector strap members are operable in order to engage and hold the main support body member in a clamped and sealed condition about the injection heater barrel.

Abstract: Improved insulation segments for fluid conduits such as pipes and ducts, having a non-tacky moisture resistant strip which extends along edges of the insulation which are adapted to be secured to other portions of the insulation, or to other insulation segments using a pressure sensitive, adhesive tape. This strip preferably comprises a cured adhesive which bonds to the paper or other surface to which it is applied which provides a good, dry, dirt free, smooth surface to which the pressure sensitive adhesive tape will strongly adhere. This strip may also comprise a layer of a plastic or a layer of a metal foil. A tape construction is also disclosed incorporating a non-tacky, moisture resistant strip which can be applied to insulation segments. This tape construction provides both a temporary closure and a permanent closure.

Abstract: In pipe jacking wherein a pipe line is formed by horizontally inserting pipes one by one from a vertical pit without moling the ground, a pipe of spigot and socket type to be used is coated with such material as concrete to form an uniform common external diameter from a flange section with its external diameter enlarged to a spigot section, a pipe whose external surface is covered with another smooth outer pipe so as to make the external surface smooth and reduce frictional resistance is provided.

Abstract: Insulating the exhaust pipe of an internal combustion exhaust system by sliding a flexible insulated tube over the exhaust pipe. The tube comprises concentrically arranged inner and outer corrugated stainless steel tubes, with the annulus between the corrugated tubes filled with refractory fiber insulation. The wall thickness of the corrugated tubes is in the range of 0.002 inch and 0.004 inch, which provides the insulated tube with sufficient flexibility to be trained over the angled portions of the exhaust pipe. The contact between the corrugations and the pipe assists in holding the insulated tube in place. The inner tube may extend beyond the outer tube and be flared back to the outer tube to enclose the insulation and facilitate movement of the insulated tube over the exhaust pipe. Alternatively, the insulation may also be sealed by end caps.

Abstract: An insulated pipe construction avoids deterioration of the refractory due to thermal cycling by supporting the refractory material against the force of gravity without restraining movement of the refractory material due to thermal expansion thereof. Excessive hoop stresses in the shell of the conduit due to thermal expansion of the refractory material can be prevented by providing a crushable layer of insulating fiber board inbetween the refractory material and the inner surface of the shell.

Abstract: An exhaust apparatus for a combustion equipment comprises an exhaust liner which includes a tubular member. The tubular member is formed by weaving or braiding a SiC fiber. A SiC is infiltrated thereinto out of the inner wall portion of the tubular member by the CVD method, thus obtaining an exhaust liner including a SiC Fiber/CVD - SiC composite. The density of SiC is greater in the inner wall of the exhaust liner than in the outer wall thereof.

Abstract: A pipeline casing insulator to support a coated pipe within a tubular, metallic casing. The pipeline casing insulator comprises a flexible belt formed of a material that is capable of bonding to an organic resin. A plurality of parallel bar-like runnners are formed fron an insulative and non-abrasive polymer concrete that is cast onto an outer facing surface of the belt. The belt is preferably a strip of an organic non-woven material. The polymer concrete is preferably a mixture of a thermosetting polymer resin, such as epoxy, polyester or polyrethane, and an aggregate. The aggregate preferably comprises a mixture of substantially incompressible coarse particulate material, such as sand or gravel, and fine filler material, such as calcium carbonate, silica flour, or kaolin. The inner facing surface of the belt preferably has a mastic coating covered by a release paper that can be removed, to allow attachement of the belt to the outer surface of the pipe by circumferentially wrapping the belt around the pipe.

Abstract: Bracing strips 7 are interposed between compressible strips 4, so-called laminate strips, of an insulating mat 1 in the form of a laminate mat with a carrier web 2, in order generally to impart compression resistance to the insulating mat 1. The compressible strips 4 normally consist of mineral fibers 6 of low compression resistance and are readily compressible parallel with the plane of the carrier web 2, while the bracing strips 7 consist of mineral fibers of higher compression strength and are substantially incompressible. Particularly good compression strength results from the fibers 8 of the bracing strips 7 also being orientated at right-angles to the carrier web 2. The resulting pressure-resistant laminate insulating mats 1 are suitable not only for the conventional fields of application of laminate mats but can also serve at the same time as a bracing since in many cases they offer superior qualities to those of supports or braces which consist of solid bodies.

Abstract: A flexible heat protective cover adapted for disposition around and securement to hot water pipes in order to provide both heat insulating qualities and to protect an individual from coming into contact with a hot water pipe. The heat protective cover generally comprises an elongated section adapted to extend around a length of pipe and a heel section adapted to extend over an elbow fitting in a water line. Velcro fasteners or similar fastener are used to releasably secure ends of the cover about the pipe. A strap extends through opposite sides of the heat protective cover and is sized to extend about a water pipe for providing permanent securement of the heat protective cover to the hot water pipe. A seepage hole may also be included in the heel section to collect and permit drainage of condensed water.

Abstract: A hot pipeline is welded to a flange which is supported by brackets connected to a nozzle. The pipeline with a flange can expand freely radially. Welded to the other end of the flange is a pipe, which can withstand an axial temperature gradient between a temperature T.sub.1 at the pipeline and flange, and a temperature t.sub.2 at a compensator and the nozzle. The axial expansion of pipe is accommodated by the compensator, which is welded to the pipe and at its other end to the nozzle. The pipeline, the flange, the pipe and the compensator are subject to the difference between pressure p.sub.2 in the vessel and the pressure p.sub.1 in the pipeline.

Abstract: A pipe comprises a hollow support member made from a member selected from copper and copper compounds and a copper oxide superconducting ceramic material which covers the inner surface of the support member with a space kept in the pipe for use in a magnet or power accumulator device.

Abstract: One embodiment of the present invention is an insulated curved metal pipe characterized by a curved body of a given length having a first section, a central section and an end section. The body has a monolithic refractory lining extending for the length of the body which is in contact with the internal surface of the first section and second section and which is spaced apart from the internal surface of the central section by a flexible insulating material, whereby the insulated curved pipe has greater flexibility (i.e., less stiffness) than otherwise possible when the cast refractory is in contact with the internal surface of the entire curved body. The curved pipe also includes a plurality of anchors attached to the internal surface of the curved body. Importantly, the anchors in the central section are sufficiently flexible to permit at least some deformation of the central section of the body relative to the refractory.

Abstract: A rigid or semi-rigid cover for installation over an insulated pipe fitting is provided. The cover is pre-cut in the geometric design that enables it to conform to the shape of the pipe fitting when installed.

Abstract: A one piece pipefitting cover for insulated Y-shaped joints, including strainers or lateral 45.degree.-Y fittings, made of a flexible material, i.e., polyvinyl chloride, comprising a relatively flat base symmetrical about its center axis having oppositely facing lateral members and semi-circular edge members along its sides wherein when rotated about its center axis forms a cover conforming to the shape of the insulated fitting.

Abstract: A flexible heat protective cover adapted for disposition around and securement to hot water pipes in order to provide both heat insulating qualities and to protect an individual from coming into contact with a hot water pipe. The heat protective cover generally comprises an elongated section adapted to extend around a length of pipe and a heel section adapted to extend over an elbow fitting in a water line. Velcro fasteners or similar fastener are used to releasably secure ends of the cover about the pipe. A strap extends through opposite sides of the heat protective cover and is sized to extend about a water pipe for providing permanent securement of the heat protective cover to the hot water pipe. A seepage hole may also be included in the heel section to collect and permit drainage of condensed water.