Abstract: A heat-insulating assembly (10) for insulating a surface of a tubular body (30) relative to the ambient air comprises a length of an annular heat-insulating body (12, 14) defining an inner cylindrical surface (17) and an outer cylindrical surface (16). A vapor-barrier layer is applied to and covers the outer cylindrical surface of the annular heat-insulating body. A through-going slit (11, 15) extends through the annular heat-insulating body (12, 14) in the entire length thereof for allowing the annular heat-insulating body (12-14) to be opened for positioning the annular heat-insulating body (10) circumferentially encircling the tubular body (30) so as to position the inner cylindrical surface (17) juxtaposed the surface of the tubular body (30).

Abstract: A protective sleeve includes a sleeve body and a cover, each having a generally semi-cylindrical cross-section. The cover includes a groove along its longitudinal edges for receiving a silicone chord sealing gasket. The sleeve body has a short cylindrical externally threaded section at one end for threaded connection within the recess of a connector ring. One end of the cover is disposed in the recess and the opposite end engages a stop carried by the sleeve body. The cover and sleeve body are latched with over-center latches to one another whereby an effective seal is formed between the cover and sleeve body. By opening or closing the latches and manipulating the cover relative to the sleeve body, the cover can be replaced rapidly should the sealing gasket become damaged.

Abstract: A composite concrete pipe in which both the inner and outer surfaces are plastic. The pipe may be formed of any diameter by forming the inner and outer plastic surfaces from helically wrapped interlocking plastic strips to form the diameters desired.

Abstract: A braided product and process include a first sleeve formed of interbraided first and second yarns which may be continuous E glass yarns. Warp beads formed by knitting or braiding are equidistantly spaced around the circumference of the braid and introduced to the braider to form an integral part of the structure. One or more heavy denier yarns are loaded on carriers so as to cross the warp beads under relatively high tension, forcing the beads selectively to the inside or outside of the sleeve surface so as to create longitudinally extending spacers which create air gaps between the sleeve and the surface of the substrate being covered.

Abstract: An insulation system for a cold pipe or container includes an inner water-absorbing layer, an intermediate heat-insulating layer defining a slot therethrough, and an outer water-absorbing layer, the inner and outer layers being in contact through the slot.

Abstract: Provided in an insulated assembly including a component covered by a reusable, reinforced insulation blanket, and jacketing covering the insulation blanket. The reinforced insulation blanket includes a plurality of jacket support assemblies that are securely attached to an insulation blanket. The jacket support assemblies support the jacketing so that the insulation blanket is not crushed when weight or other loads are applied to the jacketing. A jacket support assembly includes a component engaging plate disposed between the insulation blanket and the component to be insulated, a jacket engaging plate disposed between the insulation blanket and the jacketing, and a support stud. The support stud passes through the insulation blanket and rigidly connects the component engaging plate to the jacket engaging plate such that the jacket support assembly is securely attached to the insulation blanket. The jacket support assemblies are strategically placed to protect the insulation blanket.

Abstract: An all plastic (preferably fluorocarbon) automotive hose has great strength relative to the light weight thereof. The hose is made of an inner layer which has a preferably circumferential grooves on an outer wall and an electrically conductive surface on an inner wall. An outer jacket is extruded over the outer wall with the jacket material filling all grooves to provide a mechanical interlocking between the inner layer and the jacket. The cross section of the grooves is selected on a basis of the amount of mechanical movement desired between the inner layer and jacket. Some grooves provide uniform flexibility, some provide progressively greater resistance to bending, and some provide a differential resistance to bending--more resistance in one direction than in another direction.

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 conical hollow tube body of paper or another organic molding material is made by forming a conical hollow tube body member having a narrow end and a wide end, and producing a spacing formation by making at least one dimple on an inside in the area of the narrow end by forming a projection in a wall of the body member immediately upon completion of the body member from an outside of the latter.

Abstract: A roll system for a roller hearth furnace for thin slab casters is disclosed. The roll system includes a plurality of fluid cooled rolls rotatably mounted in the furnace configured to contact and at least partially support a charge transported along a pass line through the furnace. An upper surface of each of the fluid cooled rolls is positioned along the pass line. A plurality of dry rolls is rotatably positioned within the furnace wherein at least one dry roll is positioned between each pair of adjacent fluid rolls. The upper surface of each of the dry rolls is positioned below the pass line.

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 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 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: 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: 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 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: An insulated exhaust pipe comprising inner and outer spaced corrugated metallic tubes separated by refractory fiber isulation. Strips of higher density refractory fiber insulation hold the low density insulation in place during operation and prevent degradation of the fiber by vibration. The pipe is made by rolling the inner tube over a layer of insulation, including strips, to which adhesive has been applied. The insulated tube is then inserted into the outer tube, rotating the insulated tube so that the corrugations of the outer tube do not damage the insulation. Specific structure for carrying out these method steps is disclosed.

Abstract: There is disclosed a hot gas flue pipe assembly designed for use inside a heating boiler. The assembly has an outer pipe and an inner pipe, and the outer pipe envelopes the inner pipe in such a way that circumferential contact deformations disposed at least in separate sub zones are capable of transferring heat between the two pipes. In order to prevent the occurrence of cracking noises during the flow of hot flue gases through the hot gas flue pipe, or at least to reduce such noises to an acceptable level, the inner pipe comprises one or more sections which, when inserted inside the outer pipe, define with their opposed ends, a circumferential gap that is filled with an elastic, heat-resistant and moisture-resistant cementitious material.

Abstract: A blast joint and related handling apparatus and method for installing the blast joint in a pressurized well, using a snubber unit. The blast joint has a pressure rated protective jacket, a pressure operated ring load compensator, and an adjustable tubing anchor.

Abstract: A multi-joint blast joint comprising a series of standard length joints of production tubing is disclosed. The blast joint includes a series of cylindrical rings composed of an abrasion resistant material mounted about the tubular tubing joints forming a protective shield about the production tubing. A movable sleeve formed of cylindrical abrasion resistant rings is selectively shiftable to enclose and shield the tubing connection assemblies joining the production tubing forming the blast joint. A slip sleeve is mounted about the blast joint providing a pipe slip engaging surface for suspending the blast joint in the well bore. The production tubing and abrasion resistant rings form a blast joint whose length exceeds the standard length of a single joint of production tubing.

Abstract: Straight and arcuately curved superheater tube shields of refractory material comprising a pair of elongated half shields of identical interchangeable interfitting and interlocking size and shape, each half shield having a semicircular sidewall of corresponding straight or arcuate shape of predetermined radius of curvature extending between opposite ends and to inner diametrically opposite inner sides lying in a central plane and the plane of curvature. A number of mating camming portions with inclined camming surfaces are precisely spaced adjacent each of the inner sides so that one of the half shields may be turned end for end relative to and assembled to the other about a correspondingly shaped superheater tube by a relatively short axial movement and engagement of the inclined camming surfaces whereby the half shields are pulled together to close the joints therebetween and interlocked about the superheater tube. A refractory cement may be applied to attach the half shields to the tubes.

Abstract: In this process a laminate of glass fiber and multicomponent reaction resin, and on top of this a layer of thermal insulation, is placed on the outer side of the stack lining composed of masonry or concrete which is resistant to aggressive media.

Abstract: Hot gas container, including a pressure-proof metallic outer shell having an inner surface, thermal insulation covering the inner surface in the form of ceramic bodies each having a given surface, the bodies partially axially overlapping each other over at least the larger part of the given surface thereof, and anchors fastening the bodies to the outer shell, the anchors being welded to the outer shell, engaged in recesses formed in the bodies and covered by the outer shell and the bodies.

Abstract: According to the invention a seal is established between a rotary spray arm and a stationary pedestal support for the spray arm. Liquid from a pump, which forcibly delivers liquid to the spray arm is forced between cooperating parts of the spray arm and spray arm support in such a manner that a sealing split ring is urged both axially and radially relative to the rotational axis of the spray arm into sealing engagement with surfaces on both the spray arm and spray arm support.

Abstract: A refractory sheathing (1) of incombustible, compressed, flat insulating bodies (8) made of mineral or ceramic fiber for thermally insulating pipes (10) in preheating furnaces fired from below in the steel industry is described. The insulating bodies (8) have an inner and, if desired, also an outer arc-shaped profile, they enclose the pipes (10) to be insulated totally or almost totally in circumferential direction, and they are secured at the pipe in close mutual abutment by at least two retainers which engage the ends of a plurality of adjacent insulating bodies (8) forming a stack of insulating bodies. The risk of separating from the pipe during the constant vibrations of the same is reduced and the space requirement for installation at the building site as well as the cost of mounting involved are scaled down by the line-up of a plurality of insulating bodies (8) on a plurality of spaced apart rods (11) to form a highly compressed insulating body stack.

Abstract: A blast joint comprising a series of standard length joints of production tubing is disclosed. The blast joint includes a series of cylindrical rings composed of an abrasion resistant material mounted about the tubular tubing joints forming a protective shield about the production tubing. A movable sleeve formed of cylindrical abrasion resistant rings is selectively shiftable to enclose and shield the tubing connection assemblies joining the production tubing forming the blast joint. The production tubing and abrasion resistant rings form a blast joint whose length exceeds the standard length of a single joint of production tubing.

Abstract: This invention relates to mounting porous ceramic material to metal surfaces. The metal surfaces may either be flat surfaces or tubes. The ceramic material is held onto a perforated metal sheet by screwed-in spiral springs. The perforated metal sheet acts as a holding device and is located adjacent to a metal surface. The invention provides for porous ceramic insulation which is conveniently mounted with relation to the metal surface. Spiral springs absorb the stresses which occur during use.

Abstract: There is provided a protective method and joint for multiple consecutive production tubing each having a body portion and an increased diameter portion within a zone to be protected, the method including the steps of installing a plurality of first generally cylindrical annular protective rings coaxially over the body portion of each tubular; placing a plurality of second generally cylindrical annular protective rings coaxially locatable along the increased diameter portion of each tubular over the body portion of the first tubular while supporting the second protective rings with at least one sleeve coaxially located along the body portion of the first tubular; coupling a second tubular to the first tubular to form coupled tubulars; and placing the second protective rings over the increased diameter portion of the second tubular while using at least one sleeve to limit movement of the second protective rings in their radial direction and facilitate movement of those rings over the increased diameter and body

Abstract: A non-linear pipe segment, such as an elbow or the like, is disclosed having an inner liner (14) of a wear-resistant material. The outer shell of the segment is in two halves (10, 12) which are coated with a layer of bedding material (16) before being secured around the lines (14) by clamps (28).

Abstract: There is provided a protective joint for production tubing having a body portion and an increased diameter portion within a zone to be protected and including a transition ring formation and a plurality of first and second generally cylindrical annular protective rings coaxially locatable with the body portion and the increased diameter portion, respectively. The transition ring formation is located between the first and second protective rings and may include a transition ring, a supporting ring and a compensating ring which are sealingly biased with the protective rings against two retainers by a biasing means to thereby form a protective shield capable of accommodating longitudinal movement of the production tubing relative to the protective joint as well as flexing in the production string.

Abstract: Method for tightly jointing a sleeve to a submarine pipe laid on a very deep sea-bottom, characterized by the preliminary stages of providing a series of grooves on the inside surface of the sleeve, and of filling each one of said grooves with two half-rings made of a material collapsible under high pressures up to a 70% variation of its volume. A type of such a material is moreover described.

Abstract: A refractory insulating shield for water-cooled pipes in reheating furnaces and the like. The refractory insulating shield has an inner surface in which metallic mesh is partially embedded for reinforcing the shield. A portion of the mesh is exposed and devoid of insulating covering to provide a free pivot for two parts of the insulating shield. The shield may be of substantially trapezoidal cross-section and said free pivot enables mounting on any portion of the cross-rail without the necessity of sliding it onto the end thereof. A modification is to provide a two-part covering for only the lower half of the skid by having a readily detachable connection between the two parts.

Abstract: A pipeline carrying high-temperature fluids and having an inner conduction pipe, an outer pressure pipe and ceramic insulation disposed between the inner and outer pipes and formed of individual sections being spaced apart defining gaps therebetween, includes ceramic insulating rings formed of woven insulating fiber filling the gaps between the sections of the ceramic insulation, the rings being concentrically disposed one against the other on the inner pipe and having doubled-over edges.

Abstract: A non-linear pipe segment, such as an elbow or the like, is disclosed having an inner liner (14) of a wear-resistant material. The outer shell of the segment is in two halves (10, 12) which are coated with a layer of bedding material (16) before being secured around the lines (14) by clamping means (28).

Abstract: A lightweight ceramic refractory covering for water cooled members forming the structural portion of a metalliurgical furnace which is thermally insulating and resists wet scale attack, corrosion and vibrational stresses. The covering comprise an inner layer of thermal insulating ceramic refractory fiber blanket, an open weave ceramic cloth about the blanket, an inner layer of veneering mortar, compressed rings or strips of ceramic fiber material, and a hot face layer of veneering coating.

Abstract: Molded plastic liners for pipe spools and fittings are provided with embedded structural anchors having externally projecting parts that are secured to the metal housing by various mechanical fastening arrangements. In a series of embodiments they are welded into the welded seams of the metal housing for the component. Operation under high vacuum is ensured without liner constriction.

Abstract: Aluminum-shielded coaxial cable is repaired by using a wraparound metallic sheet, such as copper, having a contact means on the sheet, such as "dragon skin" brass strips, and a sealing means, such as a mastic. The metallic sheet provides the electrical continuity and radio frequency shielding and the sealing means provides the environmental seal to prevent moisture from entering the opening in the aluminum shield. The sheet and contact means are held in position by compression means, such as clamps, and the sheet and compression means can then be covered with a wraparound heat-recoverable closure to protect the entire assembly.

Abstract: The present invention describes an encapsulated depleted uranium metal oil field tubular member. The member includes a tubular shell containing bodies of a depleted uranium metal. Substantially all of the volume within the shell not occupied by the bodies of depleted uranium metal is filled with lead. The ends of the shell are capped and have connected thereto threaded connectors for connecting the member to adjacent components in a string.

Abstract: A method for connecting in a sealtight manner a flanged sleeve to a pipe, especially for subsea gas and oil ducts, comprises the steps of introducing the free end of the pipe into the flanged sleeve with a clearance, expanding the pipe within the sleeve with the aid of a resilient expansible body which is axially compressed, releasing the axial compression and withdrawing the expansible body. The radial expansion is such as to expand the pipe at its plastic deformation condition and the sleeve within its elastic deformation limit, so that a union is achieved between the tube and the sleeve which is virtually indissoluble.

Abstract: A covering for insulating a pipe including a U-shaped refractory cast having embedded in the refractory cast a U-bolt, and a plurality of parallel rods welded to the bolt to form a cradle-like frame. The ends of the U-bolt project from the sides of the cast. The cast is seated against the pipe and supported thereto by assembling a collar member on each of the U-bolt ends. The sides of the collar members extend over and are seated against the pipe. Nut members are threaded to the bolt ends and tightened against the collar members. Refractory material in plastic form is applied to the pipe, covering the exposed portion of the pipe, the U-bolt ends, collars and nuts assembled thereto to completely insulate the pipe.

Abstract: A flexible pipe comprising a first set of stress bearing elements extending substantially the whole length of the pipe, for accommodating maximum hoop stress resulting from flow of pressurized fluid through the pipe, and a second set of stress bearing elements extending substantially the whole length of the pipe for accommodating longitudinal stress resulting from a flow of pressurized fluid through the pipe.

Abstract: This is an improved blast joint for subterranean wells which is ideally suited for applications where corrosive compounds such as hydrogen sulfide and carbon dioxide are encountered. The blast joint comprises a plurality of temperature and corrosion resistant hard rings which are in a stacked end face-to-face array, coaxially carried on a length of tubing. The rings are resiliently compressed in the array by spring washers interspaced by flat washers and this assembly is retained by end collars distally carried on the tubing. The end collars which are employed in this invention have a collet type construction; each collar comprising a clamp ring slidably received over the end of the production tubing, having an internally threaded outer end and a tapered inside wall. A collet sleeve with a tapered outside wall is received in the clamp ring.

Abstract: A protective refractory elongated hollow member for protecting pipe and the like in high temperature metallurgical furnaces comprises an arcuately shaped male part and an arcuately shaped female part interconnected at their respective longitudinal edges. The male part includes a clip partially embedded therewithin, which clip includes at least one hook and preferably two extending outward from the longitudinal edge of the part. The female part includes hook-receiving members such as loops partially embedded and extending from its longitudinal edge to receive the hooks. The hooks include locking means or preventive disengaging means for retaining the parts in assembled relationship.

Abstract: Pipe insulation for water cooled support piping in a reheating furnace comprising refractory semicircular, pivotal complementary sleeves having wire reinforcement embedded in the sleeve refractory material and wherein the wire may be prestretched and located on the inner surface of the refractory insulation to directly contact, metal-to-metal, the outer surface of the cooling pipe. The reinforcing reticulations of the wire are at an angle to the longitudinal axis of the refractory sleeve. They enable stressing of the wire reinforcement simply by turning nuts of J-bolts, eliminating the requirement for welding of the reinforcing wire to the pipe. Longitudinal shoulders on the refractory protect the bolts from the effect of heat of the slab. The construction is such that tightening of the bolts and stressing of the reinforcing wire will cause no relative movement between the wire and refractory insulation.

Abstract: An elongated unitary refractory member having a horseshoe-shaped configuration is defined by opposing legs, each having a distal section, an interior surface adjacent to and extending between the distal sections, an outer surface and slot-like openings extending radially through the distal sections adjacent the interior surface. An interconnected reticulated metal structure is solidly embedded within the member and positioned adjacent the interior surface. A connecting plate is secured to the metal structure at each distal section and includes tabs in registry with the slots to permit access to the tabs for attachment to a water-cooled pipe or the like which is to be protected in a high temperature heat treating furnace.

Abstract: Method and apparatus for fastening insulation to a pipe which comprises an adjustable crib which is fastened both to the pipe and to the insulation. It prevents the insulation from shifting along the pipe. Additionally, a system for fastening insulation to a pipe is shown which comprises at least one of the cribs which is mounted both to the pipe and to the insulation. Further, a method is disclosed for fastening insulation to a pipe which comprises the steps of securing at least one of the adjustable cribs to a pipe and then connecting the insulation to the crib.

Abstract: Method and apparatus for applying insulation and a metal jacket to a pipe wherein insulation is first wrapped around the pipe and held by a clamp. A metallic jacket is then wrapped around the insulation and held by a clamp while the adjoining edges of the jacket are permanently secured together. The insulation and jacket respectively are temporarily held on the pipe by a clamping device which consists of a strap, a keeper at one end of the strap, a handle pivoted to the other end of the strap, the handle having a pivotal latch member which is engageable with the keeper.

Abstract: An insulator suitable for use with a truncated triangular shaped support member or skid pipe having a base member, a pair of converging side members which terminate in an apex member and a pair of shoulders extending oppositely one another from the joinder of the apex member and each corresponding side member. The insulator includes a base unit and a pair of converging side walls. When slidingly received around the skid pipe, the insulator closely conforms to the periphery of the base member and side members of the skid pipe. The side walls of the insulator preferably abut a lower lip of each shoulder so that molten slag and other impurities cannot migrate between the insulator and the skid pipe to degrade and dislodge the insulator.

Abstract: A reheat furnace work supporting member has a full length support bar protruding outwardly from precise locations on each of its opposite sides. The support bars extend the full length of the portion of the member which is to be insulated. A sectioned refractory barrier is suspended on the member by metal hangers which rest on the support bars. A method is also disclosed which includes providing a horizontal member having support bars positioned accurately on its opposite sides by preparation of the member outside a reheat furnace, then installing the member in the furnace where a refractory barrier having downwardly extending metal hangers can be attached quickly and easily at proper locations anywhere along the length of the member without requiring welding inside the furnace.

Abstract: There is provided a protective joint for production tubing having a body portion and an increased diameter portion within a zone to be protected and including a transition ring formation and a plurality of first and second generally cylindrical annular protective rings coaxially locatable with the body portion and the increased diameter portion, respectively. The transition ring formation is located between the first and second protective rings .[.and may include a transition ring, a supporting ring and a compensating ring which are sealingly biased with the protective rings against two retainer by a biasing means.]. to .[.thereby.]. form a protective shield capable of accommodating longitudinal movement of the production tubing relative to the protective joint as well as flexing in the production string.