Abstract: A device for testing decoking tools comprises means 30 for receiving the decoking tool 31 which can be connected to a high-pressure water conduit, as well as means for testing the water jet which exits from a nozzle of the decoking tool 31 following the opening of the high-pressure water conduit. It is possible to test, measure and analyse the high-pressure water jet exiting from the nozzle by means of this testing device in order to optimize the performance of the decoking tool on the basis of the results of this examination. According to the method of the invention the high-pressure water jet generated by means of the nozzles of the decoking tool is exposed to means for testing the high-pressure water jet.

Abstract: A rotary micro-adjustment mechanism for a synchronous double-drive positioning platform (such as a gantry) is disposed between a beam and support pillars of the synchronous double-drive positioning platform and comprises a positioning pillar and elastic members. The positioning pillar is provided to pivot the beam relative to the respective support pillars to compensate displacement error of the beam and the support pillars. The elastic members are provided to resist the pivotal rotation between the beam and the support pillar by their restoring force, so as to improve the rigidity of the overall mechanism.

Abstract: A drive mechanism for dehydrating a mop. The drive mechanism includes a base (10); a driven gear (12) rotatably mounted on the base; a propeller shaft (121) having a lower end rotated by the driven gear and an upper end to rotate a rotation barrel (21); a driving gear (11) meshing with the driven gear; a spinning shaft (111) to rotate the driving gear; a drive member (13) having a spinning shaft hole (131) meshing with the spinning shaft; an elastic member (14) biased between the drive member and a housing (20) to move the drive member downward relative to the spinning shaft; and a pedal (15) pivotally mounted on the base to move the drive member upward relative to the spinning shaft. The driving gear has a diameter greater than that of the driven gear to drive the driven gear to rotate the rotation barrel easily and quickly.

Abstract: An actuator is described which comprises a rotatable actuator member (14, 114) and a lock arrangement (28, 128) operable to lock the actuator member (14, 144) against rotation, the lock arrangement (28, 128) comprising an axially movable lock member (30, 130, 230a, 230b), the lock member being movable between a locked position in which it co-operates with a stop (34, 136) to resist rotation of the actuator member, and a released position, and an actuation device (62, 162) operable to move the lock member towards its released position.

Abstract: A drive transmission device includes a motor pinion gear provided at an output shaft of the driving motor and a-transmission gear engaging the motor pinion gear. In the drive transmission device, a sliding washer and a compression spring are disposed between the transmission-gear and the motor mounting plate. The sliding washer is pressed against a web of the transmission gear by the compression spring.

Abstract: This invention relates to a gear mounting having a spindle (11) extending substantially normal to a carrier (12) and capable of radial excursions from an initial position, when under load. The spindle and carrier have generally conical abutment surfaces (23, 24) normals to which extend substantially through the centroid of a projecting portion of the spindle, and in the initial position of the spindle there is a gap between the abutment surfaces.

Abstract: A coaxial gear set, in particular a hollow shaft gear set for industrial drive technology, having high power density, comprising a drive element (7), an element (3), and an output element, with a gear ratio and a transmission of a drive torque occurring between the drive element (7) and the output element via a plurality of radially movable tooth segments (5), an outer tooth flank contour (11.1, 11.2) of the tooth contour (6) of the tooth segments (5) and/or a flank contour (12.1, 12.2) of a gearing (13) of an inner gearing (15) of an internal wheel (1), relative to a gear axis (M), a tooth contour that allows surface contact in the engagement area comprising a logarithmic spiral.

Abstract: An impact reducing device for a shift lever is provided that enables more safely protecting a driver while effectively reducing impact applied to the driver by a shift lever, by moving the entire shift lever assembly downward while breaking a portion of a bushing by which the shift lever is mounted in a base bracket when impact is applied to the shift lever, a hinge shaft of the shift lever assembly is rotatably fitted and supported in the bushing, which is detachably mounted in the base bracket.

Abstract: A vehicle reversing apparatus is configured to reverse a vehicle by a driving force of a starter motor, which starts an internal combustion engine, or by a driving force of the internal combustion engine. The vehicle reversing apparatus can include a reverse drive gear, a reverse gear, a shifter gear, a shifter gear slide mechanism, and lost motion mechanism. The reverse drive gear is configured to rotate by the starter motor or the internal combustion engine and the reverse gear is configured to reverse the vehicle. The shifter gear is configured to be mounted circumferentially rotatably relative to a reverse shaft and to transmit rotation of the reverse drive gear to the reverse gear. The shifter gear slide mechanism is configured to slide the shifter gear through rotation of a shifter motor to enable the shifter gear to engage the reverse drive gear and the reverse gear. The lost motion mechanism is configured to coaxially connect a rotation shaft of the shifter motor and the reverse shaft to each other.

Abstract: A method for removing impurities from a control device of a work machine and a control device. The control device (1) comprises a trackball (4), from which impurities are flushed away. Flushing medium and impurities collected below the trackball are led along a discharge channel outside the control device. The entry of impurities into a component space comprising electronics is prevented. The discharge channel has a collecting cup for collecting impurities and leading them by means of a hose to a connecting part that has a conical mating surface for receiving the hose.

Abstract: A vehicle pedal assembly includes a pedal housing defining at least a sensor cavity and a resistance mechanism cavity accessible through an opening defined in a base of the housing. A pedal arm is coupled to the housing and includes both a sensor finger extending into the sensor cavity and a contact lever extending into the resistance mechanism cavity. A sensor is mounted in the sensor cavity and is responsive to movement of the sensor finger. A resistance mechanism is inserted and mounted in the resistance mechanism cavity through the opening in the base of the housing. The contact lever is moveable in the resistance mechanism cavity in response to movement of the pedal arm into contact with the resistance mechanism.

Abstract: The invention is directed to a formulation containing at least one hard material powder and at least 2 binder metal powders. The formulation is characterized in that the cobalt is completely contained in the first binder metal powder and is prealloyed with one or more elements of groups 3 to 8 of the Periodic Table of the Elements which are elements of the fourth period and at least one further binder metal powder from the group consisting of powders of the elements Fe, Ni, Al, Mn, Cr and alloys of these elements with one another is present and the further binder metal powders do not contain any cobalt in unprealloyed form. The invention further relates to the use of the inventive formulation in a cemented hard material, a porous sintered agglomerate and a thermal spray powder. The invention also relates to a method of controlling the toxic effect of cobalt-containing metal formulation by utilizing the inventive formulation.

Abstract: The present invention is directed to an iron powder commodity and to a process for producing such iron powder commodity comprising dehydrating and de-oiling hot strip mill (HSM) sludge within an inert gas atmosphere contained in a reaction chamber; venting and processing reaction chamber off-gas into a hydrocarbon product; discharging from the reaction chamber a dry de-oiled iron powder commodity that contains nanoparticle and ultrafine particle iron-bearing solids, and beneficiating the discharged iron powder commodity into particles of similar properties.

Abstract: The invention relates to a mixing reactor for mixing a liquid and pulverous solid, clarification the solution that is formed and discharging the clarified solution from the mixing reactor, in the lower section of which a fluidized bed is formed. The invention also relates to a method for mixing a liquid and pulverous solid into each other in a fluidized bed, for clarification the solution that is formed and for discharging the clarified solution from the mixing reactor.

Abstract: A multi-purpose opener including a head portion having a top side, a bottom side and a tip, the head portion being connected to a handle at a first angle. The head portion includes a curved member protruding from the top side of the head portion and an elongate hook-like member protruding from the bottom side. A pronged element is provided protruding from the tip of the head portion.

Abstract: Disengagement and removal tool consists of five metal parts, which can easily remove swollen glow plug without exposure to break and despite the narrow area between the engine and the body of the vehicle.

Abstract: A forcing tool is provided in which a lobe aperture incorporates opposed lobe pairs having driving flanks. Distal ends of the driving flanks define a spacing consistent with the width of a dowel or tang to be utilized in a twisted-dowel joint. The aperture incorporates location recesses to allow the dowel or tang to pass through the aperture and then through twisting create a lock condition.

Abstract: A punching apparatus comprises a punch for punching holes in a sheet, a cam member for reciprocally moving the punch in a punching direction, a motor for moving the cam member, a pulse generator for generating pulses that are synchronized with the driving of the motor, and a control unit for applying a brake to the motor to stop the cam member upon counting the pulses of a predetermined number from the pulse generator after the cam member moved by the driving of the motor passes through a reference position, in which the control unit, in case of performing an adjust mode that adjusts a timing of the braking of the motor, performs first driving processing for stopping the driving of the motor upon counting the pulses of the predetermined number after the moved cam member passes through the reference position, performs second driving processing for driving the motor by normal rotation or reverse rotation and counting the pulses until the cam member reaches a predetermined position, and determines the predetermi

Abstract: Cutting device for cutting a rubber component (9) for a green belt. The cutting device comprises a roller conveyor (1) for conveying the rubber component in a direction of conveyance. The roller conveyor comprises a number of conveyor rollers (2) which are substantially parallel to and spaced apart from each other. The cutting device comprises a knife (4) for cutting the rubber component at an angle with the direction of conveyance, wherein the cutting device is provided with a lifting beam (8) that extends transverse to the direction of conveyance between two conveyor rollers. The lifting beam (8) is vertically movable for lifting the rubber component. The knife (4) is arranged so as to be displaceable along a guide rail with respect to the roller conveyor, wherein the angle that the knife forms with the direction of conveyance is adjustable in a range of approximately 18° to approximately 34.

Abstract: The invention relates to a deburring tool for deburring abutting edges at orthogonally and obliquely extending transversal boreholes having a diameter of less than 10 mm in a component, such as an engine block, an injection system for combustion engines, a valve block and a camshaft or transmission shaft. The deburring tool is moved in a rotational and/or translatory manner and comprises a tool shaft (1), which is provided with a clamping end (2), and a tubular shaft part (5), characterized in that said tubular shaft part holds one or several cutting bodies (11) with a cutting blade (3), the cutting bodies being mounted in a movable manner in a passage (10), and in that a substance that is pressed under pressure into the through-bore (7) of the tool shaft (1) displaces the blade(s) to the exterior. The deburring tool is configured as a single piece and can be produced at low cost. Different blade geometries remove the burr by means of high speed deburring.

Abstract: A drum comprises a longitudinal central core corresponding to a length of the drum and extending from its ends, end discs, a plurality of intermediary discs provided with notches defining a housing zone of a cutting device and one or several sleeves made of an elastomeric material and braced around the discs. The sleeves at the initial state have a diameter substantially greater than a diameter of the drum and a certain degree of elasticity to deformation. A brace pushes and maintains the sleeves at the bottom of the notches causing an elastic deformation of the sleeves which grip the upper edges of the intermediary discs and an end disc producing pleats between consecutive intermediary discs.

Abstract: An apparatus for manufacturing seeds for polycrystalline silicon manufacture by cutting a silicon rod in an axial direction into at least one plate-like member, and cutting at least one of the silicon plate-like member lengthwise into seeds that are square in cross section, that includes a table which mounts the silicon rod or at least one of the plate-like member, a pair of end-face supporting members which support the silicon rod or at least one of the plate-like member by pressing both end faces thereof in the axial direction, and a cutting blade which cuts the silicon rod or at least one of the plate-like member in the axial direction, in addition the end-face supporting members includes comb-like grooves that allow the cutting blade to pass through.

Abstract: An adjustable handle for a power tool is disclosed. The adjustable handle may be rotated about the longitudinal axis of the handle to a position desired by the user and locked into the desired position by a locking member. The adjustable handle may be positioned into one of a plurality of predetermined handle positions.

Abstract: Provided is a core wire contact detection device which detects contact between a strip blade and a core wire when a sheath of an electric wire is stripped by the strip blade. The core wire contact detection device includes a vibration detection unit capable of detecting a vibration in a frequency range including a vibration frequency generated due to the contact between the core wire and the strip blade, and a contact state determination processing unit which determines that the strip blade and the core wire are in contact with each other when an amplitude of the detected vibration exceeds a predetermined threshold value.

Abstract: A holder is provided for maintaining a device such as a musical instrument in a steady position on the floor upon which the device has been placed. The holder is attached to the floor but can be easily removed. The holder is provided with a recess adapted to receive the device. The recess is located on the top of the holder. The holder separates the device from the floor and comprises a substrate which has a pressure sensitive adhesive affixed to its bottom surface.

Abstract: The present invention provides a multiple fret variable string capotasto implementing a trigger per string/fret location paradigm as well as triggers that adjust for the variable thickness and distance of the strings from the neck and/or device of the present invention.

Abstract: A guitar strap 10 includes an adjuster 13 by which the length of a second belt section 17 is adjusted. The adjuster 13 includes a base 31, a lever 32 manipulated to adjust the length of the second belt section 17, and a torsion spring 38 urging the lever 32 to pivot in a first direction. The second belt section 17 is clamped by the base 31 and the lever 32 due to urging force of the torsion spring 38. The second belt section 17 is released from a state clamped by the base 31 and the lever 32 by pivoting the lever 32 in a second direction, which is different from the first direction, against the urging force of the torsion spring 38.

Abstract: A support system for an acoustic instrument has connecting elements of flexible material extending between and attaching the instrument and a support frame to support and/or balance the weight of the instrument and isolate acoustic frequencies, thereby eliminating deleterious acoustical effects. Embodied exemplarily herein as a support system for a drum, flexible elements extend between and attach the drum head hoop to a circular frame or support that fully or partially encircles the drum. The flexible elements may be made integral with the drum head and/or its head skin.

Abstract: A convertible percussion cart-platform system includes first and second instrument platforms that are shiftable between a transportation position and a performance position for moving and positioning musical instruments and a player platform that is shiftable between folded and unfolded positions for allowing a user to perform on instruments supported by first and second instrument platforms in the performance position.

Abstract: An instructional device and associated method for illustrating the positions of keys and their associated notes on a keyboard are provided. The instructional device includes key markers that are adjustably mounted on a support structure in a configuration corresponding to the keys of a keyboard. The key markers correspond in size to the keys of the keyboard and are adjustable between the ends of the group of markers. Indicators are provided on the markers to indicate a chordal relationship between a respective one of the markers and the other markers. Thus, the device can be used, e.g., to indicate the position of the keys on a piano keyboard and, further, to indicate the relationship of the keys and associated notes to one another, such as by identifying various chordal relationships. In addition, the device can be adjusted to thereby illustrate such key positions and note relationships in connection with an inversion of one or more of the key markers relative to the others.

Abstract: An instructional system and method for students of wind instrument that include audio/video depictions for viewing by users of the system and method an instructor performing steps on a wind instrument, an animated breathing bar presented at least during a time period over which a user is to attempt to replicate the steps demonstrated by the instructor, such breathing bar to visually command a user to alternatively inhale or exhale (while producing tones on his or her wind instrument), and visual indicia instructing in textual form the step or steps to be carried out by a user. A system can include one or many steps being demonstrated and prompted for recreation by a user, as well as additional presentations, such as metronomes, interactive tuners, and the like.

Abstract: When the on-on time between Note 1 and Note 2 is shorter than the double stop judgment time JT, as shown in FIG. 3A, the mode is changed from Unison 1 to Unison 2. When note-on information of Note 1 is inputted at time t1, the parts 1-4 are assigned to Note 1, and simultaneously start sound generation at pitch n1, as shown in FIG. 3B. Next, when note-on information of Note 2 at pitch n2 lower than Note 1 is inputted at time t2, the mode is switched to Unison 2. Part 1 (with the timbre being trumpet) and Part 2 (with the timbre being clarinet) which are higher in the pitch order are assigned to Note 1, and continue generating the musical sound at pitch n1 of Note 1, and Part 3 (with the timbre being alto saxophone) and Part 4 (with the timbre being trombone) which are lower in the pitch order are assigned to Note 2, stop the sound generation at pitch n1, and start sound generation at pitch n2 of Note 2.

Abstract: FIG. 4A indicates a case where Note 1 only is depressed, and the four parts are assigned to Note 1. FIG. 4B indicates a case where Note 2 with a lower pitch than Note 1 is further depressed, wherein Part 1 and Part 2 are assigned to Note 1, and Part 3 and Part 4 are assigned to Note 2. FIG. 4C indicates a case where Note 3 with a lower pitch than Note 2 is further depressed, wherein Part 1 is assigned to Note 1, Part 2 is assigned to Note 2, and Part 3 and Part 4 are assigned to Note 3. FIG. 4D shows a case where Note 4 with a lower pitch than Note 3 is further depressed, wherein Part 1 is assigned to Note 1, Part 2 is assigned to Note 2, Part 3 is assigned to Note 3, and Part 4 is assigned to Note 4. FIG. 4E shows a case where the number of notes is greater than the number of parts, and where Note 5 with a lower pitch than Note 4 is depressed, wherein Part 1 is assigned to Note 1 and Note 2, Part 2 is assigned to Note 3, Part 3 is assigned to Note 4, and Part 4 is assigned to Note 5.

Abstract: An apparatus for signal processing, wherein a disc is placed on a turntable and is provided with a groove which can be followed by the pick-up element, and employing a time-code signal wherein during use of the disc the said time-code signal controls the digital audio source.

Abstract: In a filter device, a filter coefficient calculation circuit has a parameter table. The parameter table stores a plurality of sets of filter coefficients associated with a first parameter based on a frequency and a second parameter based on respective plurality of levels representing a degree of attenuation or enhancement of a gain of a filter in filter characteristics. The filter coefficient calculation circuit extracts a set of filter coefficients from a parameter table with the use of the first parameter and the second parameter determined according to a frequency and a strength of a musical sound signal, and outputs the extracted set of filter coefficients to the filter. The filter circuit performs filter processing for the musical sound signal, based on the filter characteristics determined by the set of filter coefficients.

Abstract: A composite material plate comprising a plurality of hard ceramic stubs with silicon rich metal inclusions in a metal-ceramic, heterogeneous poly-phase matrix and a method of fabrication thereof comprising the steps of fabricating green ceramic stubs; densifying; optionally wrapping carbon fibers therearound and arranging the green ceramic stubs into a closely packed array with organic binder, pyrrolizing and Impregnating a silicon based metal matrix by reactive sintering.

Abstract: A portable shield for use by a peace officer can be carried on an officer's arm and has a curved outer surface and a relatively small overall shape, to provide better enforcement abilities. The shield supports a canister of sprayable protection material, such as pepper spray. The shield has a baton port for supporting an officer's baton during use of the baton.

Abstract: A modular armored cab kit is provided for use on an armored vehicle that includes a cab body having a frame, an armored roof, an armored floor and a plurality of attachment elements, with the roof, floor and attachment elements being permanently attached to the frame. The cab kit further includes at least one non-armored panel, at least one non-armored door, at least one armored panel and at least one armored door, each for attachment to the cab body. The attachment elements facilitate field installation and removal of the panels and doors, wherein the non-armored panel and door are removably attached to the frame in a relatively low threat environment and are removed from the frame and replaced with the armored panel and door in a heightened threat environment.

Abstract: A recoil-operated, impulse averaging, air-cooled, magazine-fed, automatic weapon. An operating group of the weapon includes a chamber, a bolt, a barrel extension and one or more toggles. The recoil action of the weapon from firing a first round drives the toggles in a motion constrained by a cam way. The toggles then drive the chamber in a linear reciprocating motion ejecting a first round and over-riding the next round. An impulse averaging system controls the speed of the recoil.

Abstract: An apparatus is provided for exerting on a regulating piston of a control device a regulating force that is a function of the position of an actuating lever. The apparatus comprises a bearing arrangement for supporting the actuating lever, a first arm and a second arm, each of which is rotatably mounted on the bearing arrangement independently of the others. The apparatus additionally includes a carrier element that is connected to the actuating lever, and an elastic element connecting the first arm and the second arm to one another. The apparatus is especially distinguished by the fact that the position of the carrier element relative to the first arm and to the second arm is adjustable to establish freedom from backlash.

Abstract: A cushioned hydraulic cylinder assembly including a hydraulic cylinder having a reciprocating piston movable between an extended position and a retracted position and a hydraulic fluid port proximate an end thereof for ingress and egress of hydraulic fluid. A cushion member is carried by the piston, wherein the cushion member obstructs hydraulic fluid flow out of the port in the retracted position and is spaced from the port in the extended position. A continuous spiral groove is formed in an outer surface of the cushion member and has a beginning at a first end of the cushion member away from the piston and terminates proximate a second end adjacent the piston. The beginning of the spiral groove has a cross-sectional volume, the cross-sectional volume decreasing toward the second end of the cushion member. The spiral groove gradually reduces hydraulic fluid flow out of the port as the piston moves toward the retracted position.

Abstract: The invention relates to a sealing device for a swivel motor comprising an outer part and an inner part as well as at least one working chamber located between them, which seals the working chamber and comprises at least two rectangular sealing element housed in a groove enclosed in the outer and/or inner part running essentially parallel to the swivel axis of the swivel motor, each of which comprises at least one rectangular sealing plant and at least one gasket.

Abstract: A cylinder for high-pressure hydraulics is disclosed, with a cylinder sleeve extending between a cylinder base and a cylinder head composed of an inner tube and an outer sleeve made from fiber-reinforced plastic placed on the inner tube. According to the invention, a weight reduction without loss of rigidity may be achieved, whereby the inner tube of the cylinder sleeve screwed to the cylinder base and joined to the outer sleeve in a thrust-resistant or shear-resistant manner engages with the cylinder head in a tensile-resistant manner.

Abstract: An apparatus and method for separating a chosen gas from a mixture of gases having no moving parts and utilizing no chemical processing is described. The separation of particulates from fluid carriers thereof has been observed using ultrasound. In a similar manner, molecular species may be separated from carrier species. It is also known that light-induced drift may separate light-absorbing species from carrier species. Therefore, the combination of temporally pulsed absorption of light with ultrasonic concentration is expected to significantly increase the efficiency of separation by ultrasonic concentration alone. Additionally, breaking the spatial symmetry of a cylindrical acoustic concentrator decreases the spatial distribution of the concentrated particles, and increases the concentration efficiency.

Abstract: The present invention relates to a dual feed and dual vacuum four bed VPSA process for selectively adsorbing a component from a feed stream, e.g., nitrogen from air, to produce an oxygen-enriched gas stream using a multi-port indexing drum valve, a system comprising a multi-port indexing drum valve and method for operating such a system.

Abstract: A system and method is presented for reducing a concentration of ambient air used in a feed stream to form an inerting gas in a pressure swing adsorption system. The method includes introducing ambient air into a pressure swing adsorption system to form an inerting gas, introducing the inerting gas to a large volume of atmosphere, thereby inerting at least a portion of the large volume of atmosphere to form an inerted atmosphere, and removing a portion of the inerted atmosphere and introducing the portion of inerted atmosphere to the pressure swing adsorption system to form the inerting gas, thereby reducing an amount of ambient air utilized to form the inerting gas in the pressure swing adsorption system.

Abstract: Methods of characterizing and producing compositions with negative ?13C values are provided. Aspects of the invention include characterizing source materials and process products. Aspects of the invention also include compositions that contain carbon with negative ?13C values.

Abstract: An air filter system for installation within the air inlet duct for an air conditioning system has a pair of mandrels that establish sufficient friction force when a web of fresh filter fabric is drawn from a supply roll to eliminate most undesirable wrinkles and slackness in the web. The “pop-off” feature of the fresh filter fabric supply and contaminated filter fabric storage magazines with a removable side enable a fresh roll of filter fabric to be installed in the system with minimal disagreeable effort. A peripheral step that protrudes from the base of the system enables the system to be adaptable to many existing air conditioner ducting structures. A back-up secondary filter, preferably treated with the activated carbon, permits less-than-particulate contamination, e.g. odors and noxious gases to be removed from the incoming air stream.

Abstract: The present invention relates to air purification techniques and provides an air purifier. The air purifier comprises a shell with an air inlet and an air outlet. An electric field filter, an air passage and a blower are disposed inside the shell. The electric field filter comprises a filter frame disposed at the air outlet and a grid base disposed under the filter frame. A filter is provided inside the filter frame. One end of the air passage connects with the grid base and the other end connects with the blower. The blower is disposed at the air inlet. The filter frame and the grid base are integrated as a hermetic whole. Due to the integrated configuration of the filter frame and the grid base, when removing out the electric field filter, the power is cut automatically. This effectively prevents an occurrence of the electroshock, and improves safety performance of the purifier. Furthermore, air leakage can be greatly reduced, for there is no gap between the filter frame and the grid base.

Abstract: In an absorbing tower including an absorption unit of relatively small diameter capable of absorption and removal by an absorbent slurry for exhaust gas purification and a tank unit of relatively large diameter for temporarily storing the absorbent slurry flowing down from the absorption unit, the tank unit and the absorption unit are joined together by a conical member. By disposing an entrance flue at the conical member, a distance from an upper portion of the conical member to a spray header is shortened, and a height of the absorbing tower can be reduced accordingly. By extending a front end of the entrance flue to the absorption unit into which droplets of the absorbent slurry fall, a high-temperature exhaust gas from a boiler, etc., that has passed through the entrance flue, is made to pass through a circumference of the conical member so that an inexpensive material can be used in the conical member.