Abstract: To provide a structure of a heat exchanger core that enables the outer periphery of an stacked body 8 including an assembly of flat tubes to be held in a previously fastened state and is excellent in mass-productivity, external frame portions of a pair of frame bodies are fitted onto both ends of a bulging portion of the stacked body of the flat tubes, and, in the state where the stacked body is restrained, a casing is additionally fitted onto the outer periphery of the stacked body.

Abstract: An embodiment of a heat exchanger according to the disclosure includes a core configured to receive and place a plurality of mediums in at least one heat exchange relationship, and a first manifold connected to and in fluid communication with the core at a first manifold/core interface. The first manifold includes a first end distal from the core with at least one port adapted to receive or discharge a first medium of the plurality of mediums, and a second end joined to the core at the first manifold/core interface adapted to transfer the first medium to or from a plurality of first heat exchange passages in the core. A plurality of first guide vanes in the manifold defining individual layers for the first medium, and a plurality of second guide vanes divide ones of the individual layers into a plurality of first discrete manifold flow passages extending at least part of a distance from the first end to the second end of the first manifold.

Abstract: Reinforced duct section comprising side walls defining a duct interior. At least two of the side walls are parallel. A compression member extends between ribs provided on the inside surfaces of the two parallel side walls to prevent the parallel side walls from bowing inwardly. A tension member extends between two force distribution members provided on the outside surfaces of the parallel side walls to prevent the side walls from bowing outwardly. The compression member may comprise a truss provided between two ribs. The truss may be longer than the duct section. The ribs may connect first and second flanges provided on the ends of the two parallel side walls.

Abstract: With respect to a header plateless heat exchanger having as a component a flat tube formed by joining a pair of grooved plates together, air-tightness and liquid-tightness are improved between the portion of the flat tube where the plates are joined together and a header tank. A flat tube is formed by folding tab parts extending from side walls of a first plate back outwards to lie over the outer surfaces of those side walls of the first plate, and placing seating portions of side walls of a second plate on the upper end surfaces of the tab parts, after which a header tank is fitted on each longitudinal end of the flat tube.

Abstract: A thermally insulating protection element for piping, including a hollow body with an open concavity and having a wall. The wall includes at least one rigid positioning and/or support platform designed to accommodate the fastening of technical equipment to be associated with the protection element. The element is designed to not only insulate piping, but also to constitute a direct device for supporting and fastening technical equipment such as a sensing line.

Abstract: A flanged duct blank has a male part defined by lead notches formed at each side of a leading end and has a female part defined by trail notches formed at each side of a trailing end. The male part includes a lock tab. The female part includes a leg part and a Z-bend. The Z-bend includes a leg part and a gap. The duct blank is repeatedly clamped and bent by a pivoting wiper to form a duct portion. The pivoting wiper includes a clench tool that has a retractable rib and a retractable roller. With the lock tab inserted into the Z-bend and the retractable rib engaged with the Z-bend, the retractable roller clenches the leg part over the lock tab to lock the male and female parts together in a duct seam.

Abstract: A tube of a radiator includes a tube body, and a reinforcement strip. The tube body has a first curved face and a second curved face. The tube body is formed by a sheet plate which has two opposite ends connected to form a connecting portion which is located at the first curved face of the tube body. The reinforcement strip is mounted in the sheet plate and is located at the second curved face of the tube body. Thus, the first curved face of the tube body is formed with the connecting portion, and the second curved face of the tube body is combined with the reinforcement strip so that both of the first curved face and the second curved face of the tube body have a larger thickness to enhance the stiffness and strength of the tube body.

Abstract: A tubular duct member comprises a plurality of sheet metal panels 10, 12 joined along adjacent longitudinal edges by cooperating folded sheet metal catches 14, 16, the catches being pushed together such that respective detent surfaces 28, 30 on each catch engage behind one another to retain the edges of the sheets together. One of the catches 14 includes a body 36 of resilient material compressed between the catches and biasing the catches apart to maintain the detent surfaces 28, 30 bearing against one another.

Abstract: A harness clamp to hold, position and mount multiple thermocouple wire sensors in a continuous casting mold tube. The harness clamp has longitudinally spaced wire sensor openings with multiple apertured mounting tabs extending from a in use folded wire chase enclosure body member portion with overlying engagement retainment flanges to secure the wire retainment flange portion over the wire sensors positioned therewithin.

Abstract: A ductmaking apparatus bends a metal web to form a duct blank having a lock seam with male and female portions. Prior to shearing off the duct blank, the apparatus bends the web to form a lock tab that secures the lock seam during subsequent handling of the duct blank.

Abstract: A flanged duct blank has a male part defined by lead notches formed at each side of a leading end and has a female part defined by trail notches formed at each side of a trailing end. The male part includes a lock tab. The female part includes a leg part and a Z-bend. The Z-bend includes a leg part and a gap. The duct blank is repeatedly clamped and bent by a pivoting wiper to form a duct portion. The pivoting wiper includes a clench tool that has a retractable rib and a retractable roller. With the lock tab inserted into the Z-bend and the retractable rib engaged with the Z-bend, the retractable roller clenches the leg part over the lock tab to lock the male and female parts together in a duct seam.

Abstract: A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold, which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.

Abstract: A mixing pipe for a gas heater includes an intake port through which gas and air are flowed in; a discharge port through which the gas and the air flowed in through the intake port are mixed and discharged; and an acceleration part disposed between the intake port and the discharge port and having a diameter smaller than the a diameter of the intake port, wherein a distance between the intake port and the acceleration part is greater than 0.5 times of the diameter of the acceleration part and smaller than 1.5 times of the diameter of the acceleration part.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: A seam for ductwork has a male end portion integrally formed at a distal end of a duct wall and a female end portion integrally formed at another distal end of the duct wall. The female end portion includes a first fold and a second fold which define a female groove for accommodating the male portion. A distal end of the second fold is bent transverse to the female groove prior to the male portion being inserted into the female groove.

Abstract: In a safety device for a tank system with a tank pipe 1 which has a pliable region and a rigid region, a reinforcing element 7 is allocated to the rigid region of the tank pipe 1. The reinforcing element 7 is hollow and is in contact with the entire circumference of the tank pipe 1 with its interior contour.

Abstract: The invention relates to an insulation system for pipes, containers, ventilation ducts and like installation parts which have an outer surface temperature which periodically is below the dew point of the ambient air. The insulation system comprises a thermally insulating layer and a vapour barrier arranged on one side of the thermally insulating layer. The insulation system has a hygroscopic material which is arranged between the vapour barrier and the thermally insulating layer, which hygroscopic material is at least partially connected with the vapour barrier. A combination of the vapour barrier and the hygroscopic material is connected with the thermally insulating layer in such a manner that the hygroscopic material partially makes contact with the thermally insulating layer.

Abstract: A ductmaking apparatus bends a metal web to form a duct blank having a lock seam with male and female portions. Prior to shearing off the duct blank, the apparatus bends the web to form a lock tab that secures the lock seam during subsequent handling of the duct blank.

Abstract: A cornerplate-less duct includes plate members joined to each other at side end portions by a seam joint to form a tubular duct having a rectangular cross-section. Two end portions of a plate are bent perpendicular to a longitudinal direction of the plate to form flange forming portions. Corner forming portions protrude from side ends of the flange forming portions in a width direction to form corner portions at the end portions of the duct. In an expanded shape of the plate, a cut portion is provided close to a longitudinal center of the plate member such that the cut portion extends in a width direction of the plate member and has a depth substantially equal to an overlapping portion of the corner forming portion.

Abstract: A rigid pipe (1) is achieved according to the invention in that half-cylinder shaped elements (2) are joined/hinged (3) to each other and where to a such chains are connected together with their concave sides in a zipper-like motion. The two half-cylindrical chains are spooled (13) up individually on each side of a housing (12). This result in a particularly rigid pipe of varying length with a wide area of use.

Abstract: An insulation arrangement for pipes, especially for pipes of a pneumatic system in a passenger transport aircraft, essentially includes at least one insulation layer (6) as well as an outer sheath (3) consisting of titanium foil (31). The outer sheath (3) is connected, in a first end section (32) and in a second end section (33), respectively with a termination profile (7), and thereby a shell (9) with at least one longitudinal seam (13) is formed, into which the insulation layer (6) is insertable.

Abstract: A sealed ventilation duct for an HVAC system includes a sheet of flexible material incorporating an insulated bonding sealer and folded so as to be self-locking. The insulated bonding sealer adheres the opposing longitudinal edges together to maintain the desired shape of the duct and improves the energy efficiency of the HVAC by reducing the overall thermal conductivity of the duct network. The insulated bonding sealer is applied proximal an edge of the sheet of flexible material which is folded so as form a duct. A method of manufacturing a duct is further included.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: A duct main body is formed into a hollow tubular shape having in an interior thereof an intake passageway for introducing outside air into an internal combustion engine by connecting integrally a plurality of divided bodies such as a first divided body and a second divided body which are formed of a thermoplastic resin and has in a duct wall of the second divided body an opening which establishes a communication between the inside and outside of the intake passageway. An air-permeable member is insert molded in the second divided body in such a manner as to cover the opening. The air-permeable member has on an outer edge thereof a joining portion which is impregnated with the thermoplastic resin.

Abstract: A circular sheet metal duct having a sealant applied across the longitudinal seam. The sealant will improve the efficiency and will reduce or eliminate air leakage from the longitudinal seam. The sealant is applied during the manufacturing processes so that an installer does not have to seal the duct work. The method of manufacturing the sealant is provided.

Abstract: A tubing including an overlap portion formed by the first and second circumferential end portions overlapping and joined with each other, and a fluid leakage preventing member for preventing pressurized fluid from leaking from the tubing upon the tubing being subjected to hydrostatic forming. An apparatus and method for hydrostatic forming of a tubing having an overlap portion. The apparatus includes a die and a nozzle having fluid leakage preventing means for preventing the pressurized fluid supplied into the tubing from leaking from a clearance between the first and second circumferential end portions of the overlap portion of the tubing at the longitudinal end portions of the tubing.

Abstract: A duct structure (510), includes lengths of double wall square/rectangular duct (532) manufactured by pre-forming the duct in round cross-section (51) and then transforming the round cross-section into square and rectangular cross-sections utilizing expandable die structures (58). The duct (532) may be connected together end to end by flanged connectors (510, 520) formed from strip stock (71), that is notched at locations that correspond to the corners of the formed flange connector. The cross-sectional profile of the flanged connector is then formed by roll forming and/or bending and/or other techniques. Thereafter, the strip stock is bent at its notched locations to define the corners (80) of the flange connector outer and inner portions (511 and 512) and then the free ends of the strip stock are fixed together. Thereafter, the outer and inner flanged connector portions (511 and 512) are fastened together.

Abstract: A duct structure (50), includes lengths of square/rectangular duct (52) manufactured by pre-forming the duct in round cross-section (51) and then transforming the round cross-section into square and rectangular cross-sections utilizing expandable die structures (58). The duct (52) may be connected together end to end by flanged connectors (54) formed from strip stock (71), that is notched at locations that correspond to the corners of the formed flange connector. The cross-sectional profile of the flanged connector is then formed by roll forming and/or bending and/or other techniques. Thereafter, the strip stock is bent at its notched locations to define the corners (80) of the flange connector (54) and then the free ends of the strip stock are fixed together.

Abstract: A finished laminate is provided. The laminate includes an imperforate metal layer having a metallic surface, and a metallic felt layer having a first surface attached to the metallic surface and an exposed second surface facing away from the metallic surface. Also provided is multi-layer tubing including a thermally conductive metal layer having a metallic surface, and a substantially thermally non-conductive, metallic felt layer having an outer felt layer surface attached to the metallic surface and an exposed inner felt layer surface. The metal layer and the metallic felt layer collectively form a laminate configured as a substantially cylindrical structure with the metallic felt layer positioned radially inward of the metal layer. In certain embodiments, the metal the laminate has opposite side edge portions overlapping and coupled to one another at a coupling portion, without a thermally conductive path through the coupling portion.

Abstract: A pre-formed insulation module is disclosed having a part cylinder body. The body includes an unstriated insulation layer formed of a rigid insulating material substantially uniform in composition and density over its cross section. The insulation layer has an inner surface adjacent to a surface of a component to be insulated, and an outer surface generally concentric to the inner surface. A substantially non-fibrous resilient cladding layer shaped to the body is directly adhered to the insulation layer at the outer surface. Connection means are disposed along the length of the body for connecting with a further insulation module, wherein the insulation and cladding layers of each module are brought into relative contact along the contacting surfaces of the modules to insulate a portion of the component.

Abstract: An objective of the present invention is to provide a joint structure of a duct that can be formed easily and comprising features of the joint structure of a novel duct previously filed by the present applicant. A tip end portion of one of two plate members is bent to form an angle of 90 degrees or more, a U-shaped groove is formed at an tip end portion of the other plate member such that at least an opening portion of the groove is adapted to a bending angle of the one plate member so as to accommodate the bent tip end portion of the one plate member in an end portion of the other plate member, and the guide rail is formed by protruding at least a portion on a bottom side of the U-shaped groove of the other plate member obliquely from an outer face located on a base end side of a portion where the U-shaped groove is formed and constituting one of the wall faces of the duct.

Abstract: A flat, heat exchanger tube formed by rolling metal strip to fold inwardly the lateral edge regions of the strip to provide a tube having parallel, spaced, generally planar upper and lower walls, one of said lateral edge regions being bent to define a longitudinally extending partition wall extending within the tube towards said lower wall, said partition wall including first and second longitudinally extending regions disposed at an angle to one another so as to provide in one face of the partition wall a longitudinally extending recess receiving the free edge portion of the other of said lateral edge regions of the strip.

Abstract: A thermally insulating cover structure adapted for covering a hot pipe comprises a heat insulation layer (2), a filler layer (3) and a jacket (6), which is provided with drain openings (5). The filler layer comprises a material that is permeable to water. The drain openings are shielded against entry of water, while they allow drainage of water from the filler layer into the environment. This cover structure is in particular suited for outdoor pipelines, where moist conditions may arise. The invention also provides a pipeline and a method of providing a pipeline with a thermally insulating cover structure.

Abstract: The modular grill for vehicles such as trucks includes an elongated screen of generally rectangular configuration, with the longest dimension extending horizontally and with the screen having inner and outer surfaces. A plurality of vertically spaced elongated tubular bars are provided which extend horizontally across the screen in surface-to-surface contact with the outer surface of the screen. A plurality of vertically spaced straps are provided, one for each tubular bar, with the straps being in surface-to-surface contact with the inner surface of the screen. Fastening structure extend through the straps, screen and tubular bars for retaining the bars on the screen. A roll forming method is disclosed for making the tubular bar with an integral rolled locking system which extends the entire length thereof and holds the bar in tension. The bar is preferably sweep along its longitudinal axis to create a curvature consistent with modern automotive designs.

Abstract: An accessory to be attached to a base section of trunking for routing electrical cables is provided with a wall for concealing, inside the trunking, any longitudinal gap beyond an edge of at least one length of cover section. The wall has an effacable projecting finger on the front. Applications include the fitting of electrical devices.

Abstract: In a structure for joining a first plastic part and a second plastic part, the first plastic part is composed of at least one resin such as polyamide (PA), polybutylene terephthalate (PBT), polyacetal (POM), polyethylene terephthalate (PET), or polyphenylene sulfide (PPS), while the second plastic part is composed of high-density polyethylene (HDPE). Between the two parts, a metamorphic polyethylene layer exhibiting a good joining property for both the first and second plastic parts is interposed to join the parts.

Abstract: A hanger comprises a contact portion that makes surface contact with one face of the duct; a tongue piece as an engagement member that protrudes from the contact portion toward a tip end; a base portion bent continuously with the contact portion and away from the duct so as to form a guide rail accommodating space between the base portion and the tongue piece; a pressing portion formed continuously with the base portion, for pressing a face adjacent to the one face toward the tip end of the tongue piece to allow the guide rail to be securely retained between the pressing portion and the tongue piece; and a member for mounting a hanging member to the base portion. A method for hanging the duct comprises inserting a tongue piece of the hanger into the groove-shaped space of the duct; and bending the pressing portion toward the guide rail to press the face adjacent to the one peripheral face of the duct, thereby fixing the hanger to the duct.

Abstract: A wire protecting structure for connecting the wire to a insulator mounted onto a pole is directed to facilitate reception of the wire therein and to prevent exposure of the wire therefrom. The wire protecting structure includes a tube having a slit which is longitudinally formed throughout the tube and has substantially a width to facilitate insert of the wire into the tube, and a plurality of protrusions which may be formed at outer surface of the tube; a cover for enforcing the tube to closely contact the wire to the tube, wherein an edge of the cover is integral with outer surface of the tube, other edge of the cover is provided with a plurality of holes which are held to the protrusions of the tube, and a mid-portion of the cover is attached to the top portion of the insulator; and elongated binders wound about the tube and the cover, in a spiral winding configuration, to hold the tube and the cover to the insulator.

Abstract: A drainage pipe for use in a basement waterproofing system is disclosed. The drainage pipe includes a plurality of openings located along its lower sidewalls. The drainage pipe includes a cleaning tube affixed to an interior surface of the drainage pipe. The tube has a plurality of spaced holes which allow fluid such as air or water to be forced out of the tube and clean debris from the drainage pipe. A garden hose, air hose or other fluid source can be attached to the tube.

Abstract: A duct joint structure for assembling a duct used for air conditioning or venting equipment, an assembly tool for assembling the joint portion, an assembly method of a duct, and a hanger for the duct with the duct joint structure. A duct joint structure includes at least two duct plate members arranged substantially at right angles in a sectional view. An end of a first plate member is bent substantially in accordance with the orthogonal relation, and the second plate member is formed at the forward end thereof with a U-shaped groove to accommodate the bent portion of the first plate member. A guide rail is protruded at not less than 90 degrees with respect to the outer surface of the second plate member from the side thereof spaced from the U-shaped groove.

Abstract: A perforated metal center tube is provided for use within an oil, fuel, or hydraulic filter. The tube is fabricated from a perforated metallic sheet formed into a cylinder in which opposite edges thereof are mutually engaged with one another to form a longitudinal multi-layered lockseam. The lockseam is mechanically clinched to inhibit slippage of the mutually engaged edges without the need for welding, soldering or otherwise chemically or adhesively bonding the lockseam. A series of circumferential beads are provided at spaced locations along the length of the tube to provide structural reinforcement. Each bead is formed through lockseam without generating slippage or disengagement of the first and second edges relative to one another. The beads advantageously provide the tube with sufficient structural integrity to withstand typical filtration pressures, with a metallic sheet of relatively thin gauge.

Abstract: A duct joint structure for assembling a duct used for air conditioning or venting equipment, an assembly tool for assembling the joint portion, an assembly method of a duct, and a hanger for the duct with the duct joint structure. A duct joint structure includes at least two duct plate members arranged substantially at right angles in a sectional view. An end of a first plate member is bent substantially in accordance with the orthogonal relation, and the second plate member is formed at the forward end thereof with a U-shaped groove to accommodate the bent portion of the first plate member. A guide rail is protruded at not less than 90 degrees with respect to the outer surface of the second plate member from the side thereof spaced from the U-shaped groove.

Abstract: In a pipe in which a plate material is formed into a cylindrical shape, and a one-side edge portion and the other-side edge portion are joined to each other to thereby form a pipe body, a fitting convex portion is integrally formed on the one-side edge portion of the pipe body, and a fitting concave portion is integrally formed in the other-side edge portion so that the fitting convex portion is fitted into the fitting concave portion. Further, a top end portion of the fitting concave portion is bent and received in a recess portion formed in the pipe body.

Abstract: A sealing arrangement for closing off the areas to be filled with a casting compound of a tension member composed of a bundle of individual elements arranged within a tubular sheathing, for example, a stay cable of a cable-stayed bridge, includes a sealing plug composed of a first sealing layer of a deformable, non-flowable sealing material introduced between the individual elements, a second sealing layer of a setting or hardenable material introduced in a flowable state and arranged adjacent the first sealing layer in the direction toward the area to be filled out with casting compound.

Abstract: Tubular components for use in modular fencing systems are manufactured utilizing die-forming of a flat plastic sheet, rather than by profile extrusion of a tubular form. This approach is made feasible by an aesthetically acceptable and structurally sound longitudinal edge joint configuration. The joint is formed by cooperating clip members formed along opposing longitudinal edges of the sheet. The clip members are interlocked with each other in overlapping relation following the die-forming operations. The clip members are substantially concealed by peripheral side portions of the component that are held in closely spaced or abutted relation. Structural integrity is assured by staking overlapping portions of the clip members to each other at longitudinally spaced locations. This can be accomplished with a thin circular blade having teeth that rotate to pass between the peripheral side portions and to press against and deform the overlapping portions, one into the other.

Abstract: An apparatus for converting a conventional rectangular HVAC duct to a flat oval shaped duct where a conventional rectangular duct fitting is provided with a converting means to convert the opening from rectangular to a flat oval. The converting means is formed by a pair of arcuate members defining semi-circular edges and having recesses to receive portions of parallel members. The apparatus utilizes two sheet metal pieces which are formed in arcuate contours that connect between flat edges of parallel sheets to form the oval shape.

Abstract: An arrangement for tightly enclosing a substrate with a heat-shrinking plastic sleeve (1), which has thickened sections (2, 3) along its longitudinal edges, has at least two rails (4, 5) pushed on the sleeve (1) after it has been placed around the substrate. The rails hold the longitudinal edges of the sleeve (1) together before, during and after the heat-shrinking. The two rails (4, 5) form a junction area and S-shaped profiles (6, 7) are placed in the junction area on both sides of the thickened edge sections (2, 3) and are enclosed by both of the rails (4, 5).

Abstract: There is provided a cove molding cover for use in routing and protecting electrical cables and cords along the inside corners of buildings. The cove molding cover assembly includes clips which are attached to one or more of the surfaces defining the corner, and a cover strip which is snapped into place upon the clips. Each of the cover strips has arcuate lips running along its margins, while the clips have circular beads extending from their sides. The beads are insertible into the lips to attach the cover strip to the clips. Because the beads are free to rotate within the arcuate lips, and because the clips and covers strip are flexible, the entire assembly can be flexed to accommodate any variations or irregularities in the angle between the surfaces defining the corner.

Abstract: A flat tube for a heat exchanger is disclosed. The flat tube is produced by assembling a main part made of a folded metal strip defining a flat side, two rounded ends and two side portions with two free edges, as well as a secondary part made of a metal strip forming a central portion with two flanged free edges, whereby the secondary part is sandwiched into the main part to form a multichannel tube. The tube may be used in heat exchangers for motor vehicle heating and/or air conditioning systems.

Abstract: An apertured drainage pipe including a first section being inverted V-shaped and a second section, the second section being substantially flat, the second section having a first turn-up and a second turn-up to receive the first section. The drainage pipe is used with a drainage apparatus for a basement having a outer wall and footer unit and a floor including the outer wall and footer unit having an open area excavation at the inner margin thereof extending from the lower margin of the wall footer unit up to a level above the footer, the outer wall having vertically extending openings therein that are aligned, the drainage apparatus including an excavation in which the drainage pipe is placed and spaced from the footer, the outer wall draining water therefrom into the excavation, the drainage pipe enabling water to flow therethrough from the excavation, and gravel filler to fill in the excavation around the drainage pipe and support the floor.