Abstract: A method for forming a fluid tight seal is disclosed. The method may make use of a first component having a first sealing surface, and a second component having a second sealing surface. The method may further involve coating one of the first and second sealing surfaces with a metallic film layer adapted to transform into a liquefied metallic layer when a temperature of one of the first and second surfaces exceeds a melting temperature of a metal used to form the metallic film layer. Once it becomes liquefied, the liquefied metallic layer forms a pressure-tight seal between the sealing surfaces.

Abstract: An uncoupling element shields against structure-borne sound, especially for the exhaust pipe of internal combustion engines in motor vehicles. The uncoupling element includes a bellows (2) made of metal and a ring-shaped damping element (4) made of a lightweight composite. The damping element has particle-filled hollow steel spheres inserted at least one end of the bellows between the bellows end and a continuing pipeline.

Abstract: In an exhaust pipe spherical joint X, a spherical annular seal member 36 is fitted and fixed to a pipe end portion 42, the spherical annular seal member 36 is seated by abutting against a flange 43, a flared portion 47 formed of an Fe—Cr base stainless steel and containing 17.00 to 19.00% by mass of Cr is secured to a downstream-side exhaust pipe 44, and an inner surface 48 of a concave spherical surface portion 45 is brought into slidable contact with a composite surface 40 in which a surface 38 constituted by a reinforcing member 5 and a surface 39 constituted by a solid lubricant are present in mixed form in an outer surface 37 of an outer layer 35 of the spherical annular seal member 36.

Abstract: A flexible tube includes a bellows tube, an interlock tube placed inside the bellows tube, and upstream-side and downstream-side joint pipes coupled to opposite ends of the bellows tube. Diameters of fixing end portions located at opposite ends of the interlock tube are made larger than a diameter at a middle portion of the interlock tube, extension portions of the upstream-side and downstream-side joint pipes are fitted and fixed to inner peripheral surfaces of the fixing end portions of the interlock tube, and a depth of each of valley portions of a bellows portion of the bellows tube located over the fixing end portions is smaller than a depth of other valley portions of the bellows portion. Accordingly, it is possible to achieve the downsizing of the flexible tube that is connected to an exhaust system being continuous with an engine to dampen vibrations in the axial direction of the exhaust system.

Abstract: A connector having a tuning tube attached to a secondary fitting where said secondary fitting is secured to said connector using a press fit or a mating thread structure and where said tuning tube is pinched between two different bore radius sections within the connector and a sleeve section of the secondary fitting. In an alternate embodiment, the tuning tube is held by one or more barbs or sharp edged annular rings formed on the inside bore of the connector. The tuning tube can be made of one or more sections of tubing joined together.

Abstract: The invention relates to a decoupling element for an exhaust system (1) of a combustion engine, with an elastic exhaust gas-conducting body (3), with at least one support ring (7) connected to the body (3) in a fixed manner, which encloses an axial end portion (8) of the body (3) on the outside in the circumferential direction (5), and with at least one flange (9), which is fastened to the support ring (7) by means of a weld seam (12), wherein the flange (9) comprises a connecting piece (13), which is inserted in the end portion (8) of the body (3) enclosed by the support ring (7), and wherein the weld seam (12) is configured circumferential on the outside and connects an axial face end (14) of the support ring (7) facing away from the body (3) to the outer circumference (15) of the connecting piece (13) of the flange (9).

Abstract: A sealed coupling for connecting two pipe ends include two operating covers for respective connection to respective pipe ends, and elongated bellows having respective ends and a damping element supported by respective rims of said covers, said damping element disposed radially outwardly of said bellows and oriented centrally of said respective bellows ends for dissipating forces on said coupling uniformly across said bellows.

Abstract: An uncoupling element shields against structure-borne sound, especially for the exhaust pipe of internal combustion engines in motor vehicles. The uncoupling element includes a bellows (2) made of metal and a ring-shaped damping element (4) made of a lightweight composite. The damping element has particle-filled hollow steel spheres inserted at least one end of the bellows between the bellows end and a continuing pipeline.

Abstract: A decoupling element for a conduit includes an interior hose made of metal and a corrugated exterior hose surrounding the interior hose, with a hollow-cylindrical gap formed between the corrugated exterior hose and the interior hose. At least one damping element is arranged in the gap, with the damping element(s) constructed of a woven fabric made of a high-temperature-resistant material and having an outside surface with at least one bulge, wherein the bulge positively engages with a corrugation of the exterior hose. The exterior hose may be a membrane bellows. The woven fabric may be a metallic material. The at least one damping element covers, along the rotation axis, preferably a proportional length of at least 20% of the hollow-cylindrical gap and has preferably a static stiffness in the radial direction of less than 100 N/mm.

Abstract: A flexible conduit for use in a pipe system such as a vehicular exhaust system to provide a torsional or non-torsional joint between two pipes. The conduit has an outer bellows, an inner liner and at least one layer of noise/thermal insulation to attenuate noise, resist thermal transmission and dampen vibration.

Abstract: In a vibration damper of a turbomolecular vacuum pump, a vacuum tightness function and a vibration damping function are both performed by one or more toroidal rings made of an elastic material. The elastic rings assume a resting configuration while the vacuum pump is not operating and the damper is at atmospheric pressure, and they assume a compressed configuration while the vacuum pump is operating and the damper is under vacuum conditions. In the compressed configuration, the elastic rings are deformed due to a compression force. This deformation of the elastic rings prevents metal-to-metal contact between the vacuum pump and a vacuum chamber to which the pump is connected through the damper.

Abstract: A flexible conduit for use in a pipe system such as a vehicular exhaust system to provide a torsional or non-torsional joint between two pipes. The conduit has an outer bellows and an inner liner between which a layer of noise/thermal insulation is sandwiched to attenuate noise, resist thermal transmission and dampen vibration.

Abstract: A pipe/silencer device assembly comprising a connection element, which has a through hole, having an axis, and a branching off hole, which is fluidically connected to the through hole and wherein the assembly comprises: first connection co-operating with a first duct; a second duct, fluidically connected to the connection element; and a blind silencer duct, fluidically connected to the branching off hole.

Abstract: A coaxial cable adapter includes: an outer sleeve pipe, having an inserting slot with a straight aperture disposed therein; a rubber gasket, formed by a straight cylindrical soft rubber, and disposed in the inserting slot of the outer sleeve pipe; and an inner sleeve pipe, having a metal locking head and a plastic cylindrical pushing pipe respectively disposed on two ends of a central pipe, in which one end of the central pipe extends out of the pushing pipe. When the inner sleeve pipe and the outer sleeve pipe are joined, the soft rubber gasket is deformed and filled in the gaps of the adapter to wrap a cable, thereby achieving a better inner waterproofness. Meanwhile, as the adapter has an entirely metal case, its strength is also enhanced.

Abstract: A device for connecting parts of an exhaust gas system which comprises at least one metal tube formed from a bellows and optionally further parts disposed coaxially within and/or outside of the bellows and at least one further system part to be connected to the metal tube, are characterized in that one end of a short connecting tube is inserted positively in an end of the metal tube and the other end is inserted positively in the system part to be connected to the metal tube, and the system part is moved to the end of the metal tube facing the system part, thereby leaving an axial gap, and the system part, the connecting tube and the metal tube being connected from the outside in one working step.

Abstract: Described herein is a pressure-pulsation-damping fluid supply conduit comprising: a flexible covering pipe, which has end portions opposite to one another; tubular elements having respective first axes and being connected to the end portions; respective couplings, connected to the tubular elements in such a way that they are free to rotate; respective flexible pipes, which have respective fixed portions connected to the respective couplings and respective free portions located radially facing one another.

Abstract: For connection of pipelines which are subject to vibration, for example pipelines in vehicle exhaust systems, a liquid-tight decoupling element is used which includes a, e.g. multi-layer wound, metal hose and a tube accommodated in coaxial relationship inside or outside of the metal hose. A first axial fitting firmly secures one end of the tube. The tube is sized to protrude into a second axial fitting, regardless whether the metal hose is completely compressed or completely stretched, to allow movement of the tube in axial and torsional directions in relation to the second axial fitting.

Abstract: The present invention discloses a gasket and a pipe joint using the same, which can achieve airtightness with a locking torque smaller than that used conventionally. The gasket of the present invention is interposed in between two coupling faces of a first pipe and a second pipe interconnecting to the first pipe, and each of the two coupling faces has at least one annular protrudent strip. The gasket of the present invention is characterized in that the gasket has at least one annular reception/contact member corresponding to the annular protrudent strip, and that the annular protrudent strip is pressed against the annular reception/contact member to form a twofold airtight mechanism with an inner annular contact area and an outer annular contact area. Thereby, the present invention can effectively promote the airtightness of the two coupling faces of the first pipe and the second pipe.

Abstract: A connection between a plate and a pipe wherein the pipe passes through an opening in the plate, and wherein the plate has a spring-elastic tongue at the opening which is fixedly connected to the pipe.

Abstract: A compound pipe for conveying fluid comprising an inner pipe positioned within an outer pipe such that the walls of the inner pipe and outer pipe define a gap. The compound pipe further including an insulating material for insulating the inner pipe from the outer pipe, the insulating material and outer pipe defining a fluid channel.

Abstract: An environmental control system muffler including a thin wall polyetherether ketone (PEEK) cover tube, an open cell polymer attenuator tube slip fit there into and polymer end fitting securing the two tubes together and cooperating to form a pneumatic seal with the cover tube. The method of making the muffler apparatus includes the selection of tubing constructed of such PEEK corrugated construction and the open cell polymer noise attenuation construction, telescoping the tubes together and securing the end fittings thereto.

Abstract: A method of avoiding damage to a decoupling hose mounted between two tubes of a motor vehicle exhaust system, said hose comprising a deformable inner portion, an outer sealing leakproofing portion in the form of a continuous and leaktight sleeve having a flexible central zone and two rigid endpieces, and an intermediate portion in the form of a wad of thermal lagging extending substantially over the entire length of the outer sleeve, each rigid endpiece extending at least over a length such that its peripheral end edge connected to the flexible central zone overlies the inner portion of the hose which is subjected to deformation, wherein, in order to avoid any damage to the wad of thermal lagging by said peripheral end edge of each endpiece, the method consists in defining the effective length of the endpieces in such a manner that for the wad of thermal lagging having an initial thickness H0 and a compressed thickness Hc when compressed by said peripheral edge of each endpiece during maximum transverse defle

Abstract: In a vehicle exhaust system support structure, an upstream side exhaust pipe connected to an engine is guided to an inlet of a muffler supported on a vehicle body, and a downstream side exhaust pipe coupled to an outlet of the muffler is disposed in the interior of a rear bumper. The upstream side exhaust pipe and the inlet of the muffler are coupled to each other via a flexible tube, thus floatingly supporting the upstream side exhaust pipe in the muffler. The downstream portion of the upstream side exhaust pipe passes through the interior of the flexible tube, and is inserted into the inlet of the muffler.

Abstract: Described herein is a pressure-pulsation-damping fluid supply conduit comprising: a flexible covering pipe, which has end portions opposite to one another; tubular elements having respective first axes and being connected to the end portions; respective couplings, connected to the tubular elements in such a way that they are free to rotate; respective flexible pipes, which have respective fixed portions connected to the respective couplings and respective free portions located radially facing one another.

Abstract: For continuous high temperature operation over a service life in excess of twenty years, a flexible pipe joint includes various features that tend to reduce the temperature of the load-bearing flex element or reduce strain in the warmer elastomeric layers of the flex element. These features include a heat shield of low heat conductivity material integrated into the inner profile of the pipe extension and interposed between the central bore of the pipe joint and the flex element, low heat conductivity metal alloy components between the hot production fluid and the flex element, high temperature resistant elastomer at least in the warmest inner elastomer layer of the flex element, and a flex element constructed to shift strain from the warmer inner elastomer layers to the colder outer elastomer layers by providing greater shear area, different layer thickness, and/or higher elastic modulus elastomer for the warmer inner elastomer layers.

Abstract: A mounting bracket adapted for use in mounting a wastegate actuator to a turbocharger of an automotive engine. The mounting bracket includes a flat metal bracket having a hole formed therein, for supporting the wastegate actuator, and a clamping portion integrally attached to the metal bracket. The clamping portion surrounds a cylindrical inlet portion of the turbocharger to mount the bracket thereon. The clamping portion is also used to tighten the wastegate actuator in place on the turbocharger body. Once a desired position of wastegate actuator is achieved, the clamping portion is tightened around the turbocharger pipe using a fastener to keep the two halves of the clamping portion fastened together. The design of the mounting bracket allows for a large number of positions in which the wastegate actuator is placed on the turbocharger.

Abstract: A fluid guideline with at least two structural elements made of substantially soundproof material has at least one opening for sound damping. An impedance change (in particular in the form of an impedance discontinuity) of the flow resistance of the fluid flowing through the fluid guideline is present between two adjacent structural elements, and the at least one opening is arranged in the region of the impedance change between two adjacent structural elements.

Abstract: An automobile exhaust-pipe joint structure and a coil spring for use therein. The exhaust pipe connection structure includes a first exhaust pipe having a first flange section, a second exhaust pipe having a second flange section, a ball joint section for connecting the first and second exhaust pipes flexibly, and coupling mechanisms provided at a plurality of positions of the first and second flange sections. One exemplary coupling mechanism includes a bolt member penetrating the first flange section and being secured, at one end part thereof, to the second flange section, and a coil spring of deformed cross-section interposed between the other end part of the bolt member and the first flange section, wherein the cross-section of a wire is reduced in diameter, in the compressing direction with a dimensional ratio between the short diameter and long diameter thereof being in the range of 1.1–2.6.

Abstract: A method of avoiding damage to a decoupling hose mounted between two tubes of a motor vehicle exhaust system, said hose comprising a deformable inner portion, an outer sealing leakproofing portion in the form of a continuous and leaktight sleeve having a flexible central zone and two rigid endpieces, and an intermediate portion in the form of a wad of thermal lagging extending substantially over the entire length of the outer sleeve, each rigid endpiece extending at least over a length such that its peripheral end edge connected to the flexible central zone overlies the inner portion of the hose which is subjected to deformation, wherein, in order to avoid any damage to the wad of thermal lagging by said peripheral end edge of each endpiece, the method consists in defining the effective length of the endpieces in such a manner that for the wad of thermal lagging having an initial thickness H0 and a compressed thickness Hc when compressed by said peripheral edge of each endpiece during maximum transverse defle

Abstract: An exhaust-vibration decoupling connector has an inlet tube (1) extended downstream from a decoupler inlet (2) to an inlet-tube step (22). The inlet-tube step includes a radially inward extension of the inlet tube to a damper seat (23) that includes further downstream extension of the inlet tube. An outlet tube (4) is extended upstream from a decoupler outlet (5) to an outlet-tube step (24) that includes a radially inward extension of the outlet tube to proximate an outside surface of the damper seat. A vibration damper is positioned removably in a damper fixture (3) that includes the damper seat intermediate the inlet-tube step and the outlet-tube step proximate midway between the decoupler inlet and the decoupler outlet. Surrounding the vibration damper, a decoupler bellows (7) has an upstream bellows attachment (9) proximate an outside periphery of the inlet tube and a downstream bellows attachment (10) proximate an outside periphery of the outlet tube.

Abstract: An exhaust-vibration decoupling connector has an inlet tube (1) extended downstream from a decoupler inlet (2) to an inlet-tube step (22). The inlet-tube step includes a radially inward extension of the inlet tube to a damper seat (23) that includes further downstream extension of the inlet tube. An outlet tube (4) is extended upstream from a decoupler outlet (5) to an outlet-tube step (24) that includes a radially inward extension of the outlet tube to proximate an outside surface of the damper seat. A vibration damper is positioned removably in a damper fixture (3) that includes the damper seat intermediate the inlet-tube step and the outlet-tube step proximate midway between the decoupler inlet and the decoupler outlet. Surrounding the vibration damper, a decoupler bellows (7) has an upstream bellows attachment (9) proximate an outside periphery of the inlet tube and a downstream bellows attachment (10) proximate an outside periphery of the outlet tube.

Abstract: An exhaust-vibration decoupling connector has an inlet tube (1) extended downstream from a decoupler inlet (2) to an inlet-tube step (22). The inlet-tube step includes a radially inward extension of the inlet tube to a damper seat (23) that includes further downstream extension of the inlet tube having a bend (36,37) which interlocks with a radially inward extension (24) of an outlet tube to prevent the connector from extension movement. An outlet tube (4) is extended upstream from a decoupler outlet (5) to an outlet-tube step (24) that includes a radially inward extension of the outlet tube to proximate an outside surface of the damper seat. A vibration damper is positioned removably in a damper fixture (3) that includes the damper seat intermediate the inlet-tube step and the outlet-tube step proximate midway between the decoupler inlet and the decoupler outlet.

Abstract: An exhaust pipe decoupler for vehicles including a bellows (10), an outer braid member (20) spaced from the bellows and braided with a predetermined angle, a retainer (30) having a support (31) inwardly curved at both ends thereof for engaging to a ring damper (40), the retainer being affixed to the ends of the bellows (10) and installed between the outer surface of the bellows (10) and the outer braid member (20) to prevent direct contact thereof, the ring damper (40) located outward the support (31) formed in the retainer (30), a fixing cap (50) coupled to the outer diameter of the outer braid member (20) in order that the outer braid member (20) and the retainer (30) are located outward the bellows (10), wherein the outer braid member (20) absorbs tension in excessive outer forces, i.e., displacement of tension and compression, and the ring damper (40) controls the displacement of compression and shear displacement by the ring damper (40), thereby controlling the bellows within the elastic range.

Abstract: A coil spring according to the present invention is used as a coil spring in an automobile exhaust-pipe joint structure. The automobile exhaust-pipe joint structure of the invention is a coil spring using the coil spring according to the invention.

Abstract: An exhaust-vibration decoupling connector has an inlet tube (1) extended downstream from a decoupler inlet (2) to an inlet-tube step (22). The inlet-tube step includes a radially inward extension of the inlet tube to a damper seat (23) that includes further downstream extension of the inlet tube having a bend (36,37) which interlocks with a radially inward extension (24) of an outlet tube to prevent the connector from extension movement. An outlet tube (4) is extended upstream from a decoupler outlet (5) to an outlet-tube step (24) that includes a radially inward extension of the outlet tube to proximate an outside surface of the damper seat. A vibration damper is positioned removably in a damper fixture (3) that includes the damper seat intermediate the inlet-tube step and the outlet-tube step proximate midway between the decoupler inlet and the decoupler outlet.

Abstract: A device for connecting a pneumatically or hydraulically operated tool to a connection coupling in order to provide the connection to a transport line which guides a liquid or gaseous medium. The device includes a first part (11) with an engaging section (13) which is provided so that it can be inserted into a receiving element on the connection coupling and therefore be detachably connected with the same. The device also has a second part (3) with a connecting section (5), which is configured for being permanently connected to the tool. The two parts (3, 11) each have at least one additional section (9, 17), one of the additional sections (9) radially, externally surrounding the other, at a distance, and an elastic connection (19) being provided between the two additional sections. The connection can be produced by casting, injecting or extruding an elastic, rubber-type material between the two sections.

Abstract: A flexible catalytic converter apparatus for use in internal combustion engine powered vehicle exhaust systems. The flexible catalytic converter apparatus includes a vibration decoupling exhaust connector and a catalytic converter insert disposed within, one of the components of the vibration decoupling exhaust connector.

Abstract: The present invention relates to an ventilation duct construction and a method which increases the fire-retardant capability of a ventilation duct. According to the invention, an improved fire-retardant capability of a ventilation duct or sound absorber is obtained by providing the ventilation duct with a shielding sheet at a distance from the same so that an air gap is formed therebetween. The time during which the outside temperature of the construction can be kept down is prolonged, while the construction remains compact.

Abstract: A pipe structure includes an annular corrugation centered on an axis. The corrugation has a cylindrical liner centered on the axis, two annular sidewalls extending radially outward from axially opposite ends of the liner, and an annular crown extending axially between radially outer ends of the sidewalls. An annular cavity is centered on the axis and is bounded by the liner, the sidewalls and the crown. A structural filler is contained within the cavity.

Abstract: A flexible connector apparatus for decoupling vibrations, for example, along the components of an internal combustion engine exhaust system. The flexible connector apparatus is provided for connecting first and second components in the exhaust system, and includes a bellows for accommodating relative movement between the first and second components. The flexible connector apparatus includes an attachment construction which enables weldless, gasketless connection of the bellows to at least one of the first and second components. The flexible connector apparatus may include a liner tube structure having inlet and outlet liner tubes.

Abstract: A decoupling sleeve for mounting in a motor vehicle exhaust pipe (LE), the sleeve (5) comprising in particular a mechanical portion (10) having two rigid end zones (15) for connection to the exhaust pipe (LE), and a sealing portion (11) that is thermally insulated from the inside by an insulation portion (12) and that extends over substantially the entire length of the mechanical portion (10) of the sleeve, the sleeve being characterized in that the sealing portion (11) comprises a central zone (22) formed by a layer or wall (24) made of a material that is flexible and that withstands temperature, and two rigid end zones (23) respectively connected to two end zones (15) of the mechanical portion (10), the sealing portion (11) forming a covering that is continuous, closed, and leakproof.

Abstract: A connection device for making a tight connection between two ends of tubes is provided. The connection device includes a body having two symmetrical and opposite portions for engaging ends of respective tubes, and each of the portions has a hooking element to keep the tube in the connection, and a sealing element for the connection. The hooking element of each portion includes: a truncated chamber arranged in each portion; a longitudinal rib projecting into the truncated chamber; and a split ring whose ends are located on either side of the longitudinal rib. The ring is provided with an internal threading, so as to cause a blocking of the tube by any traction on the tube in a direction opposite to its direction of engagement. The ring is placed free in the truncated chamber, on one hand, and is elastically deformable, on the other.

Abstract: A flexible connector assembly is provided for an exhaust system. The exhaust system includes first and second rigid exhaust pipes. The flexible connector assembly includes a flexible metal hose section and a liner tube. The liner tube has a first, enlarged-diameter section and a second, reduced-diameter section. The liner tube first section is fixedly secured within the hose section. An annular clearance is formed between the liner tube second section and the hose section. The connector assembly effectively resists vibration and provides a relatively fluid-tight passage for exhaust gasses between the first and second exhaust pipes.

Abstract: A decoupler for exhaust pipe of automobiles includes a bellows for absorbing bending and expansion, the bellows being airtight with respect to exhaust gas therein, and an inner, cylindrical sleeve disposed in the bellows for protecting the bellows from the exhaust gas passing through the cylindrical sleeve. A guide member is disposed at one end of the bellows outside of and around at least a portion of the bellows, and a cover member is disposed at the other end of the bellows outside of and around at least a portion of the bellows. A first mesh ring and a second mesh ring are disposed between the guide member and the cover member and form a sliding surface in contact with a body portion of the cover member and circular-arc surfaces of the guide member.

Abstract: Vibration decoupler apparatuses, for decoupling vibrations, for example, between first and second the components of an internal combustion engine exhaust system. The flexible connector apparatus is provided for connecting first and second components in the exhaust system, and includes a resilient flexible sealing member (bellows) for accommodating relative movement between the first and second components. The flexible connector apparatus includes an annular vibration damping member connecting a down pipe to a mounting member for permitting restricted axial, lateral and angular movement of the downpipe, relative to the mounting member, which may be affixed to an exhaust manifold, for example. The apparatus also includes a sealing construction which enables weldless, gasketless connection of the bellows. An alternative construction positions the vibration damping member between the decoupler apparatus and the downstream component.

Abstract: An expansion joint for high temperature air or other gaseous flows, of the type in which two duct ends are separated by a gap, that is bridged by overlapping inner and outer liner ducts. The inner and outer liner ducts are surrounded by at least one insulating pillow. The periphery of the expansion joint is surrounded by a flexible cover. A bellows liner structure is disposed between the inner and outer liner ducts and the at least one insulation pillow.

Abstract: An exhaust pipe assembly provided with a bellows pipe for connecting an upstream exhaust pipe and a downstream exhaust pipe is disposed so as to form a double pipe construction with a first joint pipe which is connected to the upstream exhaust pipe and a second joint pipe which is connected to the downstream exhaust pipe. A pair of ball receiving portions are disposed on a peripheral surface of the first joint pipe at a distance from each other in a circumferential direction, and a pair of ball receiving portions are disposed on a peripheral surface of the second joint pipe at a distance from each other in a circumferential direction. The ball receiving portions are disposed at an angular phase difference with each other in the circumferential direction.

Abstract: The invention discloses a decoupler for exhaust pipe of automobiles including a bellows (10) made of metal and formed in cylindrical and a repeatedly corrugated shapes for absorbing bending and expansion to maintain the exhaust gas to be airtight; an inner sleeve (20) in a cylindrical shape, disposed inward the bellows (10) for protecting the bellows (10) and passing through the exhaust gas at high temperature; a guide member (40) disposed at the one end of the bellows (10) for forming circular-arc surfaces (41, 42) at both ends of a cylindrical portion (43), with respect to the motion center of the bellows (10), wrapped outward the bellows (10); a cover member (50) disposed at the other end of the bellows (10), for having inclined sections (51 and 52) symmetrically formed at the opposing ends of the body portion (53) thereof at a predetermined angle, wrapped outward the bellows (10); first mesh ring (60) and second mesh ring (61) disposed between the guide member (40) and the cover member (50), forming a sli

Abstract: An exhaust decoupler system for motor vehicles includes: a sleeve through which exhaust gas may pass from the engine; a couple of retainer members oppositely positioned from the exhaust pipe and engine, one member engaged with the outer side of the sleeve, at which end the rims are circumferentially bent; bellows between the rims of the inner retainer members, for absorbing the bending and expansion to maintain the exhaust gas to be airtight; outer retainer members located externally the inner retainer members, both ends engaged with the inner retainer members, inner side to be opened toward the center; a guide ring member for dividing the inner retainer members and outer retainer members to symmetrically form first pockets and second pockets, and for surrounding the bellows; and an inner buffering member and an outer buffering member in the form of loop to be filled within in the first pockets and the second pockets.

Abstract: An exhaust piping system is provided for a vehicle with an internal combustion engine and an exhaust system including an emission control device. The exhaust piping system includes an exhaust pipe connected to the engine and an emission pipe connected to the emission control device. The exhaust and emission pipes include ends which are tapered to form reduced outside diameters. A flexible hose coupling includes a bore which telescopically receives the exhaust and emission pipe ends. First and second annular clearances are formed between the reduced-diameter pipe ends and the flexible hose coupling bore, which clearances reduce wearing and abrasion of the flexible hose coupling associated with vibration and relative movement between the pipe ends and the flexible hose coupling.