Abstract: A mountable discharge pipe for an end muffler has devices for fastening the discharge pipe to an end muffler housing. A hook provided on the discharge pipe can be suspended at the end muffler housing, and a holding lug provided with an opening is arranged at the discharge pipe. The holding lug can be fastened by way of a nut-bolt connection on the end muffler housing. As a result, an easily mountable fastening of a discharge pipe on an end muffler is achieved.

Abstract: An exhaust pipe with illuminating devices is formed by an inner pipe enclosed in an outer pipe. A gap is formed in between the two pipes. The gap comprises a light socket connected to at least one illuminating device. The light socket and the illuminating device are connected by means of an electric cord. The outer pipe comprises holes on its wall. When the illuminating devices are lighted, the light will shine from the tail end and the holes of the exhausting pipe either directly or reflectively.

Abstract: A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the back side of the exterior chromed pipe cut away along the length of the pipe from the mounting flange to the muffler core. The cut-away exterior pipe is dimensional to allow the interior pipe to be inserted—one piece from the mounting flange to the muffler core, as well as cooling the exterior pipe, thereby preventing heat discoloration of the exterior chromed pipe.

Abstract: A device for noise configuration in a motor vehicle has a hollow body which is divided into at least two spaces. One space is connected to a gas-carrying part of an internal combustion engine arranged in the motor vehicle, and the other space is coupled acoustically to an interior and/or to an engine space of the motor vehicle and/or to the space surrounding the motor vehicle. The hollow body is divided into the two spaces by an essentially acoustically inactive wall. A vibrational element, which extends into both spaces, is arranged within the hollow body.

Abstract: A chromed exhaust pipe and muffler for motorcycles that is capable of withstanding the extreme heat generated at high rpm's of a motorcycle engine without discoloring or “bluing”. A double wall construction is utilized for the exhaust pipe and muffler with the back side of the exterior chromed pipe cut away along the length of the pipe from the mounting flange to the muffler core. The cut-away exterior pipe is dimensional to allow the interior pipe to be inserted in one piece from the mounting flange to the muffler core, as well as cooling the exterior pipe, thereby preventing heat discoloration of the exterior chromed pipe. Spacers are welded to the interior pipe and the exterior pipe at the backside cut-away of the exterior pipe to space the interior pipe within the exterior pipe. The muffler core includes a baffle core enclosed by an interior pipe section, allowing gases to flow out the back end only. The interior pipe is spaced apart from and enclosed in the exterior chromed pipe.

Abstract: A method of manufacturing a exhaust system for an internal combustion engine having two banks of cylinders by which pulses of exhaust gas are alternately directed to a crossfire assembly. The crossfire assembly, which is located in the exhaust system, includes a gas accelerator chamber which divides each pulse of exhaust gas between two secondary exhaust outlets and causes a low pressure wave to occur in the exhaust system to enhance scavenging of a subsequent pulse of exhaust gas and thereby improve engine performance.

Abstract: A muffler assembly is disclosed allowing one or more outlet tips to be secured to an exhaust. The muffler comprises a casing having an outlet end including threaded holes or threaded bolts attached to the casing, an outlet tip with a tubular member and an annular flange connected to the tubular member, wherein the flange has a plurality of holes or incisions and wherein screws or nuts cooperate with the threaded holes or threaded bolts, respectively, to secure the outlet tip to the casing.

Abstract: An engine muffler and spark arrestor includes an outer tube extending along an axis and having an inlet end and an outlet end. A plurality of substantially identical nested discs are disposed coaxially adjacent the outlet end of the outer tube. Each of the discs has a centrally located aperture. Each of the discs also has at least one slot extending therethrough. An end cap is disposed on a distal end of the set of discs. The end cap has a solid central portion which forces at least a portion of an exhaust gas flowing from an internal combustion to which the muffler is connected to flow radially outwardly along interstitial spaces defined between each pair of discs and then flow axially in a direction approximately parallel to a longitudinal axis of the muffler.

Abstract: A muffler is described with a housing having an input and an output. At least one plate is disposed within the housing to divide it into at least a first and a second internal expansion chamber. At least one tube is disposed through the plate, the tube having first and second ends with a bend therebetween, the bend altering an orientation of the second end of the tube so that the second end faces an interior surface of the housing. The housing, the plate and the tube establish a path for the exhaust between the input and the output. In addition, the first and second internal expansion chambers cooperate to attenuate sound, and the tube assists in sound attenuation and/or affects the path of the exhaust to arrest the discharge of sparks from the output.

Abstract: A muffler and method of making a muffler is disclosed wherein the muffler is formed from a single sheet showing four portions separated by three folds lines and wherein the two center portions are formed with tube outlines such that when the center portions are folded 180°, the tube outlines on the center portions abut to provide an exhaust path and wherein the two outer portions are folded over one of the center portions respectively to define two chambers surrounding the tubes and wherein end caps are provided to enclose the chambers.

Abstract: In a double-wall tail pipe for an exhaust pipe of a motor vehicle exhaust system comprising an inner shell to be mounted on the exhaust pipe, an outer shell surrounding the inner shell and being supported thereon in spaced relationship to form an annular air space therebetween for conducting cooling air therethrough, a support structure provided with air passages is disposed between the inner and the outer shells in an area where the inner shell is seated on the exhaust pipe when the tail pipe is mounted on the exhaust pipe which support structure interconnects the inner and outer shells in an area which is spaced from the discharge end of the tail pipe.

Abstract: A single-in/single-out exhaust muffler 20 for an internal combustion engine includes a curved inner tube (26), an exhaust inlet (24) in communication with a first leg (32) of the curved inner tube (26), and an exhaust outlet (28) in communication with a second leg (36) of the curved inner tube (26). The exhaust inlet (24) is configured to receive exhaust gas (22) and the exhaust outlet (28) is configured to output the exhaust gas (22). A curved portion (38) interconnects the first and second legs (32 and 36). A sound absorbing material (40) is wrapped around the curved inner tube (26), and a muffler housing (42) encloses the curved inner tube (26) and the sound absorbing material (40). The first leg (32) includes a perforate region (58, 60) and an imperforate region (62, 64) arranged about a circumference (66) of the first leg (32). Likewise, the second leg (36) includes a perforate region (68, 70) and an imperforate region (72, 74) arranged about a circumference (76) of the second leg (36).

Abstract: A sound adjustable tail pipe structure includes an adjuster secured in a rear section of a tail pipe which defines a first oblong slot. The adjuster includes a tube having a first end provided with a first positioning base and a second end provided with a second positioning base, and an adjusting base rotatably mounted in the second positioning base. The first positioning base defines a first through hole connecting to the tube and has a wall defining a plurality of first guide holes. The second positioning base defines a second through hole connecting to the tube and has a wall defining a plurality of second guide holes, and a peripheral wall defining a second oblong slot. The adjusting base defines a third through hole connecting to the second through hole and has a wall defining a plurality of third guide holes aligning with each of the second guide holes, and a peripheral wall defining a screw hole.

Abstract: An adjustable muffler system for a combustible engine including a muffler adapted for connection with an exhaust pipe of an engine, a blocking tube configured to be removably inserted within the muffler, and latch means adapted to removably secure the blocking tube within the muffler. In other embodiments, the blocking tube can include various holes or slots and may be telescoping or fabricated from multiple pieces.

Abstract: A turbine exhaust structure is provided for a vehicle which includes an exhaust tail pipe having an inner wall defining a screw hole. The turbine exhaust structure includes a turbine exhaust device secured in the inner wall of the exhaust tail pipe, and a bolt co-operating with a nut for securing the turbine exhaust device in the inner wall of the exhaust tail pipe through the screw hole. The turbine exhaust device includes a housing secured in the inner wall of the exhaust tail pipe, a wheel disk secured in the housing, a plurality of catch pieces mounted in the wheel disk, an axle base secured in a central portion of the wheel disk, an axle rod rotatably mounted in the axle base of the wheel disk and having a first end provided with a first vane wheel and a second end provided with a second vane wheel, and two bearings mounted between the axle base and the axle rod.

Abstract: An improved fluid flow system for enhancing fluid flow through an opening. The first embodiment uses a first extension member for extending an opening through a perpendicular surface and a second extension member with a generally converging introductory section secured in a sealed overlapping relationship to the distal end of the first extension member. A second embodiment uses a pair of conduits of equal cross-section with a bulbous section therebetween with one of the conduits inserted into the bulbous section. A third embodiment with unequal cross-sections with the smaller diameter conduit inserted into the larger diameter conduit and sealed thereto for forming a continuous conduit.

Abstract: The invention relates to a device in a silencer unit of an automotive vehicle, for suppressing unwanted noise originating from an exhaust gas flow from the vehicle engine, said silencer unit being terminated by an end pipe, through which said exhaust gas flow is conveyed to the surroundings. The invention is characterized by the end pipe comprising at least one perforated section having a predetermined extension (L2) in the longitudinal direction of the end pipe, and being positioned downstream of a point (L3) along the end pipe where there is substantially no turbulence in the exhaust flow. Through the invention, an improved silencer unit is provided, with which predetermined requirements for comfort directed low-frequency suppression of the exhaust flow noise, as well as statutory requirements for high-frequency absorption of the noise, are fulfilled.

Abstract: A cap-like valve body 37 is fitted on an outer circumference of an end portion of a communicating pipe 35 that provides a communication between a plurality of silencing chambers formed in a muffler main-body. A compressed coil spring 39 is mounted between a flange 35b of the communicating pipe 35 and a flange 37d of the valve body 37. Communication holes 38 are formed in a cylindrical portion 37a of the valve body 37. When the valve body 37 receives the pressure of the exhaust gases at a pressure receiving surface 37b and moves along the axial direction against the biasing force of the spring 39, the exhaust gases within the communicating pipe 35 flow out of the communication holes 38 to the outside of the valve body 37.

Abstract: An exhaust muffler for a motor vehicle includes a louver tube having an intake end and an exhaust end. An outer tube, consisting of a frustoconical portion and a cylindrical portion, is concentrically arranged around the louver tube. A plurality of louvers and associated louver holes in the louver tube scoop a portion of gasses from the louver tube into the outer tube. An end cap, which includes an exhaust exit hole in its center, fits into an exhaust end of the outer tube. A plurality of end cap holes are arranged so that gasses leaving the outer tube flow through them. A restrictor disk between the end cap and louver tube includes a central hole coaxial with the louver tube and the exhaust exit hole of the end cap. Restrictor disk holes are in the restrictor disk between the central hole and its perimeter so that gasses leaving the louver tube flow through the central hole and the restrictor disk holes as they leave the muffler.

Abstract: The device for producing an overtone-rich, sporty exhaust sound of the exhaust system of a four-cylinder engine includes exhaust pipes with four manifold pipes, at least one front pipe and a tail pipe. The length and/or cross-section of at least one exhaust pipe differ from the length and/or cross-section of the other exhaust pipes. At least some of the exhaust pipes lead into a first, second and/or third collecting point.

Abstract: Compactness is enhanced while retaining the performance, noise deadening characteristic and engine output. The ratio of the distance, a, from a gas outlet end, p, of an exhaust pipe to an inner wall of a rear partition wall to an inside diameter ∅A of the exhaust pipe is set in a relation of 0.6≦(a/∅A)<1.2, while the ratio of the distance, b, from a gas inlet end, q, of a tail pipe to an inner wall of a front partition wall to an inside diameter ∅B of the tail pipe is set in a relation of 0.4≦(b/∅B)<1.2, to afford a silencer having an optimum combination of engine output characteristic and compactness while retaining a noise deadening effect.

Abstract: An exhaust system for an internal combustion engine having two banks of cylinders by which pulses of exhaust gas are alternately directed to a crossfire assembly. The crossfire assembly, which is located in the exhaust system, includes a gas accelerator chamber which divides each pulse of exhaust gas between two secondary exhaust outlets and causes a low pressure wave to occur in the exhaust system to enhance scavenging of a subsequent pulse of exhaust gas and thereby improve engine performance.

Abstract: More than two damping chambers 2A to 2C), a communicating pipe (6) for intercommunicating the damping chambers (2A, 2B) and another communicating pipe (7) for intercommunicating the damping chambers (2B, 2C) are provided. Both ends of the communicating pipes (6, 7) are closed by an end plate (9) and the respective damping chambers (2A to 2C) and inside of the communicating pipes (6, 7) are intercommunicated by communicating holes (8A) on an outer circumference of the communicating pipes (6, 7). Exhaust gas flows from the damping chamber (2A) to communicating holes (8A1), inside of the communicating pipe (6), communicating holes (8A2), the damping chamber (2B), communicating holes (8A3), inside of the communicating pipe (7), communicating holes (8A4), and the damping chamber (2C), thus damping exhaust noise by repeated effective contraction and expansion.

Abstract: The invention concerns a conduit element made of metal for uncoupling high frequency vibrations in connection with exhaust gas conduits of motor vehicle internal combustion engines. To improve the uncoupling of these high frequency vibrations, the conduit element of the invention basically comprises a screw thread-shaped or annularly undulating short corrugated sheathing hose of high rigidity inserted into the exhaust gas conduit, as well as a knitted jacket placed on the waved corrugated sheathing hose segment in a force-locking or form-locking manner.

Abstract: An exhaust muffler (20) for an internal combustion engine (25) includes a tapered tube (28) and an outer tube (40) axially aligned with and surrounding the tapered tube (28) so that an annular passage (42) is formed between the tapered tube (28) and the outer tube (40). The tapered tube (28) has an exhaust inlet end (30) for receiving exhaust gases (76) from the engine (25) and an exhaust outlet end (34). The outer tube (40) has an air inlet end (50) for receiving air (49) external to the engine and an air outlet end (52). The external air (49) flows in the annular passage (42) toward the air outlet end (52). The flow of the external air (49) creates a low pressure region (54) downstream of the exhaust outlet end (34) to accelerate the receipt of exhaust gases (76) from the engine, and elliptical holes (62) in the tapered tube (28) allow the smooth flow of exhaust gases (76) from tapered tube (28) to mix with the external air (49) to achieve effective noise attenuation.

Abstract: An exhaust muffler for a motor vehicle includes a louver tube having an intake end and an exhaust end. An outer tube, consisting of a frustoconical portion and a cylindrical portion, is concentrically arranged around the louver tube. A plurality of louvers and associated louver holes in the louver tube scoop a portion of gasses from the louver tube into the outer tube. An end cap, which includes an exhaust exit hole in its center, fits into an exhaust end of the outer tube. A plurality of end cap holes are arranged so that gasses leaving the outer tube flow through them. A restrictor disk between the end cap and louver tube includes a central hole coaxial with the louver tube and the exhaust exit hole of the end cap. Restrictor disk holes are in the restrictor disk between the central hole and its perimeter so that gasses leaving the louver tube flow through the central hole and the restrictor disk holes as they leave the muffler.

Abstract: A process for production of a tube profile element having a swaged closed head end includes the steps of chamfering an unswaged end of a tube profile element having a first diameter to provide a chamfered end on the tube profile element having a chamfer angle of less than 45° relative to a longitudinal axis of the end portion of the tube profile element, supporting the tube profile element in a retaining tool such that an end portion of the tube profile element having the unswaged chamfered end thereon extends beyond the retaining tool, providing a swage tool having a negative die capable of swaging the end portion of the tube into a swaged closed head end having a maximum second diameter larger the first diameter of the unswaged end of the tube, and moving the swage tool toward the end portion of the tube and swaging the unswaged chamfered end of the tube, by the negative die of the swage tool, into the swaged closed head end of the tube profile element.

Abstract: The invention concerns an exhaust silencer arrangement with a transverse exhaust silencer in a four-chamber type of construction, in particular for very small passenger-transporting motor vehicles, with a 3-cylinder rear-mounted engine and an exhaust gas turbocharger. The silencer comprises a housing which is composed of two half shells and accommodates a catalyst module in an integrated manner. The catalyst module, which does not have its own housing, forms a silencer system partition which divides the silencer into a 3-pot main chamber and an additional chamber which is in particular a resonator chamber and communicates with the main chamber via connection ducts formed in the half-shell housing.

Abstract: A silencing member has a plurality of elongate members each having a plurality of elongate glass fibers, with the plurality of elongate members being cross-layered to define a fabric.

Abstract: An exhaust system is provided with a structure that separates water from an exhaust stream and also attenuates the noise of the exhaust system. Water laden exhaust is directed from an inlet conduit through a perforated surface to precipitate water from the water laden exhaust stream. After the water is precipitated out of the exhaust stream, the gaseous portion of the exhaust stream continues from the inlet chamber 24 to an outlet chamber 28 and exits from the housing structure by passing through a first outlet conduit. The precipitated water passes from the housing structure through a second outlet conduit.

Abstract: A muffler comprises an outer shell defining a chamber, a baffle positioned in the chamber defined by the outer shell, and an inner plate positioned in the chamber. The inner plate includes a channel and a ridge coupled to the channel. The ridge extends away from the channel. The baffle includes an outer edge positioned adjacent to the outer shell and an inner edge positioned adjacent to the ridge and spaced apart from the channel.

Abstract: Pipe section running along a curve, intended for use in a muffler, comprising two hollow-formed molded parts which are mirror-symmetrical in relation to the radial plane of the curve and which have connected thereto a flat outside edge running in the radial plane along the outside of the curve, which flat outside edges are placed on each other so that the molded parts together form the pipe section, a third flat part being placed at the position of the radial plane between the two molded parts in such a way that a curved edge of said third flat part is situated between the two flat outside edges of the molded parts and is fastened to said outside edges.

Abstract: An exhaustion pipe structure including a hollow tube body, a fitting ring, locking plates, locking screws, an exhaustion fitting pipe and a decoration. The decoration is replaceably fitted with the hollow tube body which is fitted around the exhaustion pipe of a car so as to beautify the exhaustion pipe.

Abstract: A double U shaped exhaust pipe having varying internal pipe diameters for increasing horsepower, designed within internal combustion engine vehicle racing or other rules that limit such features as overall size. A first stage portion of the exhaust pipe produces a first periodic flow of exhaust, with a vacuum pulse created where the pipe internal diameter increases upon the exhaust reaching a second stage portion. A third stage portion of the exhaust pipe produces a third stage periodic flow of exhaust upon the exhaust reaching an increased pipe internal diameter at a fourth stage portion. These periodic pulsed flows are matched to the opening of the intake and exhaust valves of the engine for a selected engine speed range. The matching of a vacuum pulse to the opening exhaust valve improves engine performance by drawing exhaust gases from the engine.

Abstract: A first muffler (4) is connected to a rear end portion of the exhaust pipe (2) extending from a single-cylinder engine toward one side of a rear portion of the vehicle body and is provided on one side of the vehicle body. A second muffler (5) is provided on the other side of the vehicle body opposite to the first muffler (4) through a connecting pipe (6). An outer side surface near the front end portion of the first muffler (4) and the second muffler (5) are covered with first and second covers (7) and (8) both plated. Each of the exhaust pipe (2) and the first and second mufflers (4) and (5) have double-pipe structure with outside plated. Further, a front end portion of the second cover (8) is curved toward the center of the vehicle body, and a phantom line as a continuous frontward extension from the front end portion of the second cover (8) is positioned before the axis of the connecting pipe (6).

Abstract: A muffler exhaust tip has a first end provided with clamping members and a second end having a decorative exterior finish. The construction of the muffler tip allows the manufacturer to provide multiple decorative exterior finishes on the muffler tip body. Two adjustable clamping members facilitate attachment of the muffler tip to an exhaust pipe of a motor vehicle. The clamping members attach to the tailpipe of a muffler with a high retention force and can accommodate tailpipes of different diameters for a "universal" fit. A sound amplifying member is set inside the muffler tip, comprising a dual plate member which increases the sound decibel output from the tailpipe and also provides an attractive end cover for the muffler tip.

Abstract: The present invention relates to a muffler used in a motor vehicle for cooling the engine exhaust gases. The muffler has an internal tubular member defining an internal chamber and a middle tubular member concentric in relation to and supported on the internal tubular member. The internal and middle tubular members form a first ring-shaped chamber adapted to connect to the exhaust pipe. The muffler also has an external tubular member being concentric in relation to and supported on the middle tubular member. The middle tubular member and the external tubular member form a second ring-shaped chamber with a third inlet portion. Hence, engine exhaust gases of the motor vehicle pass through the first ring-shaped chamber and are sufficiently cooled and depressurized by cooling air that passes through the internal and second ring-shaped chambers.

Abstract: An exhaust system for a vehicle includes a muffler connected to an exhaust pipe, which is in turn connected to an engine. A spark arrester is provided with a tail pipe and connected to the rear end of the muffler, and is capable of discharging an exhaust gas flowing through the muffler through the tail pipe of the spark arrester into the atmosphere. The interior of the muffler can be divided into a plurality of expansion chambers connected by restricting passages by attaching the spark arrester to the muffler to enhance the sound attenuating effect. The interior of the muffler is divided into the plurality of expansion chambers by separators disposed in the muffler and a spark arrester combined with the muffler.

Abstract: A catalytic converter for a tailpipe which further reduces vehicle exhaust emissions from exhaust emission systems and that will meet the more stringent emission requirements of state and federal government regulations. The tailpipe catalytic converter includes a ceramic or steel housing which includes a matrix core of catalytic layered materials which react with the exhaust emission pollutants, such as NO.sub.x, NMHC, HC, and CO. These pollutants are further reduced and oxidized by the catalytic converter in the tailpipe by the typical catalytic materials of platinum, palladium, rhodium, or the like contained within the honeycombed or meshed layers of the matrix core. The catalytic converter is lodged within the interior of the tailpipe adjacent the open end or as an extension to the end of the tailpipe. The tailpipe catalytic converter is held in place by any suitable device, such as a clamp, mounting screws, or mounting brackets.

Abstract: An exhaust muffler for a motor vehicle includes a louver tube having an intake end and an exhaust end. An outer tube, consisting of a frustoconical portion and a cylindrical portion, is concentrically arranged around the louver tube. A plurality of louvers and associated louver holes in the louver tube scoop a portion of gasses from the louver tube into the outer tube. An end cap, which includes an exhaust exit hole in its center, fits into an exhaust end of the outer tube. A plurality of end cap holes are arranged so that gasses leaving the outer tube flow through them. A restrictor disk between the end cap and louver tube includes a central hole coaxial with the louver tube and the exhaust exit hole of the end cap. Restrictor disk holes are in the restrictor disk between the central hole and its perimeter so that gasses leaving the louver tube flow through the central hole and the restrictor disk holes as they leave the muffler.

Abstract: A bubble generator includes a body with an inlet passage and outlet passages. Pumping means which comprises a pair of bellows, a plurality of first check plates, a plurality of second check plates, a pair of permanent magnets and a pair of electromagnets are disposed between the inlet passage and the outlet passages for pressurizing the air that flows through the inlet passage into the bellows and discharges it through the outlet passages. Noise-reducing means which comprises a first pipe having the same inner diameter as that of the outlet passage, a second pipe disposed concentrically with and in the first pipe, and a plurality of ribs supporting the second pipe at the first pipe are disposed in the middle of the outlet passages, for reducing noises caused by the pressurized air which is periodically pressurized by the pumping means and discharged into the outlet passages, by dispersing the pressurized air inside the outlet passages.

Abstract: An improved muffler for silencing the exhaust emitted from a water cooled marine engine employing a first outer housing encompassing a generally cone shaped inner member and forming a silencing volume therebetween and an angularly disposed inner planar baffle, inlet path, outlet path, ramp, and aperture for exhaust gas and cooling water to fluidly communicate from an inlet to an outlet resulting in a diminution in flow velocity so as to attenuate the exhaust noise.

Abstract: A corrugated structure is designed by dividing a given length of a corrugated structure into a number of sections, or corrugations. The length is then divided by the number of sections to obtain a constant value which serves as a reference point for determining the varied pitches of the structure of the present invention. The varying pitch of each section is determined by adding or subtracting a variation value from the constant value to obtain a varying pitch. The variation values, and thus the varying pitches, of the sections of corrugated structure are empirically chosen. Whistles, or pure tones of noise, produced by the flow of a fluid relative to the corrugations are eliminated when the corrugated structure is designed according to three requirements: 1) the total of the pitches of a given section is approximately equal to the length of a given section; 2) no two adjacent sections can have the same pitch; 3) no two variations within a given set of sections can have the same value.

Abstract: An apparatus for attenuating noise produced by fluid pressure pulsations in a hydraulic system in an automotive vehicle is disclosed. The apparatus includes a muffler device comprising a generally elongate tubular member having a predetermined number of attenuating zones therein, each zone having a cross-sectional area of different size than the cross-sectional area of the tubular member. The attenuating zones are spaced at unequal lengths from one another to achieve maximized noise reduction benefits.

Abstract: Disclosed is a visible flame exhaust pipe for use with internal combustion engines. A high temperature resistant glass is incorporated within the exhaust system to allow visibility of combustion flames passing through the exhaust pipe as the flame exits the exhaust system.

Abstract: A tuner hose assembly for a motor vehicle power steering system including a flexible hose, a first flexible tuner tube inside the flexible hose having an upstream end connected to a pump, and a second flexible tuner tube inside the flexible hose having a downstream end connected to a power steering gear. A downstream end of the first flexible tuner tube is longitudinally separated from an upstream end of the second flexible tuner tube by a wave interference gap which terminates where an inner wall of the flexible hose is clamped against the upstream end of the second flexible tuner tube. The length of the second flexible tuner tube is selected, i.e. "tuned", to attenuate higher order pump fluid-borne noise and simulates a rigid metal tube of a prior tuner hose assembly having greater overall length.

Abstract: A device for sound suppression in a channel system for flowing gases or air, particularly an exhaust system or intake system in an internal combustion engine, includes at least one channel which is in communication with two volumes or apertures, wherein standing sound waves arise in the channel. One of the two volumes or apertures can be in the form of a main silencer or a filter housing while the other volume of aperture is in the form of a smaller silencer or an inlet pipe. The pipe, which may be in the form of a volume space, has one end, an inlet opening, in acoustical communication with the channel, while an opposite end is wholly or partly closed against the environment. The pipe is located outside the channel and an acoustic permeable filter is provided in the region near the inlet opening of the pipe. The filter has a flow resistance within the interval 5 Ns/m.sup.3 -2000 Ns/m.sup.3, preferably within the interval 30-300 Ns/m.sup.3.

Abstract: The adaptor includes a tail pipe extension having a sleeve radially spaced about the extension to provide a circular space therebetween. Arms project outwardly from the extension and beyond the attached sleeve and constitute limit stops during installation of an inflatable cuff of an enging exhaust evacuation system. The sleeve serves to protect the cuff from extreme temperatures while ensuring proper attachment of the cuff and subsequent automatic separation from a vehicle.

Abstract: An improved muffler for silencing the exhaust emitted from a water cooled marine engine employing a first housing encompassing a second housing which is partitioned by an angularly disposed inner planar baffle further having an inlet for exhaust gas and cooling water to fluidly communicate into an inlet chamber of the second housing resulting in a diminution in flow velocity so as to attenuate the exhaust noise, the exhaust gas and cooling water exiting the inlet chamber through an aperture fluidly communicated therewith into a silencing volume formed by an area between the first and second housing and forced through an aperture into an outlet chamber of said second housing. The outlet chamber acting as a back flow preventor.

Abstract: This invention relates to a detachable filter and muffler device used in an exhaust system, wherein the filter and muffler device is easily detachable so that the maintenance of the exhaust system is simplified, and the cost of maintenance is reduced.