Abstract: A fluid power linear drive including a housing having an inner surface defining a piston receiving space, a piston reciprocally movable within the piston receiving space and a cooperative engagement means provided on the inner surface of the housing and an outer surface of the piston to prevent the piston from rotating relative to the housing. The cooperative engagement means may take the form of a projection means and a cooperating longitudinal groove, wherein the inner surface of the piston receiving space has the projection means extending radially inwardly into the piston receiving space and the piston has the groove cooperatively engaging the projection means for preventing the piston from rotating within the piston receiving space.

Abstract: A brew basket of the present invention useful in drip-style beverage brewing systems comprises a brewing chamber and a filter having replaceable filter medium pivotably attached to and in fluid communication with the brewing chamber, wherein the replaceable filter medium is sealably supported on an annular flange of the filter. The brewing chamber and the filter are two separate components mated together to provide a substantially leak-proof seal. By integrating the filter in the brew basket in an open and obvious position with a replaceable filter medium disk, a user has convenient access to the filter medium for improved compliance in regularly replacing the filter medium.

Abstract: A dischargeable storage device instantaneously moveable between a store position and a discharge position. The dischargeable storage device includes a deck having a pair of pivotable trap doors. Each door has a guide post. The dischargeable storage device has a plunger having two guide channels. The plunger is moveable within the aperture. Each guide channel is adapted to cooperate with one of the guide posts such that when the plunger is depressed, the guide posts travel along the guide channels allowing the trap doors to open. An apparatus for for evenly distributing portions of food having a dischargeable storage device is also disclosed.

Abstract: A method and apparatus for providing easy to be handled, convenient, partially sized bales of hay, fastened together to form a single, “full-size” bale of hay. These partially sized bales made by a baler and then combined together via a bale aggregator.

Abstract: A laterally displaceable guide track for a bale binding apparatus includes a carriage with a guide track portion mounted on it with a hinge. The guide track portion has an engaged position and a disengaged position. The engaged position is aligned with at least one other guide track portion to define a bale loop plane, and the disengaged position is out of the bale loop plane. The mount allows the guide track portion to be moved between the engaged position and the disengaged position. The disengaged position allows the carriage to be withdrawn from a baling station for ejection of a finished bale.

Abstract: A two-piece die for simultaneously embossing a pattern into a web of material and cutting out that pattern from the web includes a flexible die member having male embossing patterns surrounded by a male die cutting edge. A base die member has female patterns into which the male patterns on the base die fit, but no corresponding groove for the male die cutting edge. The two members of the die set are held in a register by upper and lower outwardly projecting register tabs on the base die that are received into corresponding register slots in the flexible die and a register bar raised above the surface of the flexible die along side the register slots are on. An edge of the base die lying between the register tabs butts against the register bar. The die members, with a paper between them, are run through a flat bed press to produce embossed cut out patterns.

Abstract: A screen printing manual repetition system semi-automates use of a screen with a manual printing press. The screen has a screen frame and a screen mesh. The manual repetition system (MRS) has an MRS frame mountable to the screen frame, a track system, and a height adjustor configured to adjust the height of the track system relative to the MRS frame. A squeegee has a squeegee frame with a blade, guide members configured to guide the squeegee through the track system, and an angle adjustor configured to adjust the angle of the blade relative to the screen mesh during operation.

Abstract: A printing material processing machine has an oscillating roll with a roll shaft, a roll barrel rotatably and translatorily mounted on the roll shaft, and an oscillating mechanism for moving the roll barrel to and fro along the roll shaft. The oscillating roll is mountable on a roll lock. A fixing device is provided and constructed in such a way that, in a dismantled state of the oscillating roll, in which the latter is released from the roll lock, the fixing device secures the roll barrel against displacement along the roll shaft and, in an installed state of the oscillating roll, in which the latter is mounted in the roll lock, permits the axial to and fro movement of the roll barrel.

Abstract: A roll for a printing press has at least two circular partial areas (25, 33) made of an ink-friendly material and at least one circular partial area (23, 34) made of an ink-repellent material, which is arranged between the at least two circular partial areas (25, 33) made of ink-friendly material. A process is provided for manufacturing such a roll, wherein at least two annular structures (25, 33) made of an ink-friendly material and, located between these annular structures, at least one annular structure (23, 34) made of an ink-repellent material are formed on a blank roll body (20, 30).

Abstract: A printing unit for influencing lateral web spreading in particular in rotary presses, which makes constant contact conditions possible across the width in the rubber-rubber nip and improves the lateral-register quality and the web run without using concave or convex blanket cylinders, has a blanket cylinder and plate cylinders which can be set against the former for printing on one or both sides of a web. The web passes through between the blanket cylinders in a contact zone, it either being possible to skew at least one of the blanket cylinders with respect to the respective plate cylinder or it being possible to skew at least one of the plate cylinders with respect to the respective blanket cylinder, for producing a concave velocity profile on the web.

Abstract: An arrangement for printing flat workpieces is provided and includes an application roller which rolls on the workpiece surface 6 to be printed and thereby applies a printed image to the workpiece surface 8, the application roller forming a printing cylinder 5 or a transfer roller 1 cooperating with a printing cylinder 5, a counter-roller 2 which forms in cooperation with the application roller a printing gap 3, through which the workpiece 4 passes during the printing process, and a transport device 7 for feeding the workpiece 4 into and out of the printing gap 3 formed by the application roller and the counter-roller 2.

Abstract: The invention relates to a positioning apparatus for positioning flexible printing plates on printing cylinders, wherein the printing plates are provided with at least one mark functioning as reference, wherein the apparatus comprises: a support device for a printing cylinder; at least one camera which is adapted to record the image of the at least one mark of the printing plate positioned on the printing cylinder; and a monitor for enlarged display of the image recorded by the at least one camera, wherein the positioning apparatus is provided with a registering device for registering the image recorded by the camera. Using such a registering device it is possible to establish that the marks are located at the correct position. By making a copy of the data thus inputted into the register, evidence can be provided that the flexible printing plate is placed in the correct manner.

Abstract: Methods and apparatus are provided for a low shock separation joint. A first member couples to a first structure and includes surfaces to prevent separation under compressive and tensile force placed on the separation joint. A second member couples to a second structure and includes surfaces corresponding to the surfaces of the first member. The first member is elastically flexed to allow the surfaces of the first and second members to be aligned to one another. The first member is released from flexing which couples the first and second members together. An explosive device is placed within the separation joint. Detonating the explosive device moves the surfaces of the first and second members out of contact with one another decoupling the first and second members. A passive force is applied to accelerate the first and second members away from one another. After detonation the first and second members are intact.

Abstract: An ammunition unit (1) designed to he adaptable to different types of targets (2,2?) or situations. The said ammunition unit comprises cylindrical warhead charges (4, 5) that confine or form explosive compositions (23), on or around the outside of which there are effect layers or casing containing effect elements (25, 27). These effect elements together with the explosive compositions (24) constitute the combatant function. Two or more cylindrical warhead charges (4, 5) are arranged essentially parallel alongside each other or inside each other. Each of the cylindrical warhead charges comprises effect layers around their cylindrical outer surface that provide different effects in target. The cylindrical warhead charges are rotatably arranged to assume different rotational setting modes, and in each such mode the same type or co-ordinated types of effect layers are directed outwards.

Abstract: A projectile for use in firearms and of the type having on one end a hemispherical tip which communicates at its base with a nose segment which then attaches to a cylindrical body terminating in a surface whose width represents the diameter of the aforementioned cylindrical body. One or many parts of the projectile are coated or plated in a material that creates a surface featuring recesses when it hardens. This surface acts as an aerodynamic aid when the projectile is in flight. The coating or plating may be applied directly to the projectile or layered on top of a jacket.

Abstract: The present invention relates to a friction drive conveyor including carriers 1, which can be propelled along a track by frictional wheels 30 fitted along the track. Each frictional wheel 30 can be driven by a brakeless motor 29. A sensor 32 senses whether each frictional wheel 30 is in contact with any one frictional surface 15 of the carriers 1. The track includes a section along which the frictional wheels 30 are supported at regular intervals equal to or slightly shorter than the total length L of the frictional surfaces 15 on each side of each carrier 1. On the basis of a signal output from each sensor 32, a controller 24 so controls the associated brakeless motor 29 as to start rotating the associated frictional wheel 30 in contact with any one frictional surface 15 when the forward next wheel 30 gets free of the frictional surfaces 15, and as to stop driving the frictional wheel 30 having got free of the frictional surfaces 15.

Abstract: Embodiments of the invention move objects throughout two-dimensional and three-dimensional space by using a movement line that is coupled with a plurality of opposing sides of the platform. The movement line is used to control the horizontal axis motion and Z-axis motion of the platform and is designated the horizontal movement line. Displacing a portion of the horizontal movement line allows vertical displacement of the platform to be traversed. There is no need for a complex computer control system since the Z-axis displacement is substantially independent of horizontal movement over a coverage area serviced by the platform. Nested embodiments utilizing one or more rope allow for three-dimensional movement of an object or angular displacement of an object with respect to the vertical axis. A mounting beam for positioning and supporting the Z-axis and horizontal axis motors and visual display element(s) and other optional multimedia devices may also be positioned independently of the platform.

Abstract: A rail system for transporting dual use vehicles includes a network of multiple non-interconnected rails where each rail comprises an extruded triangular shell and a support material. The rails are supported by a system of support structures where each support structure includes a base with a rail adjustment actuator for selectively adjusting the position of the supported rail. Each rail is sized to support a standardized dual use passenger vehicle adapted for roadway and rail travel.

Abstract: The catering display provides an attractive serving setting for sushi and other foods, increasing the visual appeal of the foods. A stepped base provides multiple surface levels so that sushi and other foods can be well displayed, having pieces toward the center of the base elevated rather than hidden by pieces in front. A hollow interior of the stepped base receives an ice tray so that the entire display base can be kept chilled. The chilled base tends to keep the food items fresh for a longer period of time. Ornamental attachments may be secured to the stepped base, to create a more aesthetically pleasing display of sushi or other food items. For example, a miniature “torii gate”, reminiscent of the ancient temples of Japan, may be mounted atop the stepped base. The “torii gate” may be removed, and replaced with other ornamental attachments.

Abstract: A foldable table includes a tabletop and two leg frames for supporting the tabletop, each of the leg frames having a transverse member pivotally attached to a underside of the tabletop and a standing leg extended from the transverse member and pivotally moveable with respect to the tabletop. A retaining element having a first end pivotally attached to the transverse member and a second end pivotally attached to the standing leg of the other transverse member. The retaining element has an adjustable length adapted for lengthening to become longer than a distance between the transverse members of the leg frames as the leg frame is erected, thereby providing lateral support for the erected leg frame.

Abstract: A pivotable folding utility table includes a table top having a pair of support pedestals pivotally attached thereto. A first pivotal support brace including a distal end and a proximal end attached to the first support pedestal. A second pivotal support brace including a distal end and a proximal end attached to the second support pedestal. The distal ends of the first and second pivotal support braces pivotally attached to a retaining assembly preferably mounted in relation to the table top. Specifically, the retaining assembly includes a cross-brace member operably disposed through openings formed in the distal ends of the first and second pivotal support braces, thus providing a pivotal engagement in relation to the table top.

Abstract: A device for lifting and lowering visual displays, such as television sets, video monitors, plasma displays, pieces of art, or the like. The elevating device includes an elevating mechanism that elevates a first sliding frame and a second sliding frame. The first and second sliding frames move independently inside of a mounting frame. A motor rotates a pair of vertical threaded rods to drive the first sliding frame and cause the first sliding frame to rise and fall. A belt and pulley configuration transfers an elevating force from the first sliding frame to the second sliding frame. The second sliding frame includes supporting bars and is elevated to place the display at a desired height and is retracted to conceal the display in a cabinet, or the like.

Abstract: A supplying apparatus supplies a combustible material capable of enhancing the sealing effects of a supplying system for supplying a combustible material, such as combustible wastes, to a fluidized-bed chamber, stably supplies a combustible material having an undefined shape, and reduces cost for installation. A facility is also provided for gasifying a combustible material using the supplying apparatus for supplying a combustible material, and a method of gasifying combustible materials is also provided. The supplying apparatus supplies a combustible material onto the fluidized bed of a fluidized-bed gasifier chamber or a fluidized-bed combustion chamber. A screw conveyor is inclined, with transportation of the combustible material directed upward, at an angle of 20 degrees or more and 80 degrees or less with respect to a horizontal plane, causing a bed material to flow into a conveyor casing of the screw conveyor.

Abstract: Disclosed is a non-polluting high temperature combustion system which comprises in combination a graphite-lined combustion chamber fueled by a controlled-burn thermite fuel, wherein the fuel burns a temperature of up to 6000 degrees Fahrenheit, wherein the resulting gases are essentially pollution free; the system also include a means of passing a substrate into and out of the combustion chamber and/or a turbine powered by gases from the combustion products, means of injecting a working fluid into the combustion gases upstream of the turbine, a heat recovery means that comprises a geo-thermal hot rock bed, a steam generator utilizing heat from the geo-thermal hot rock bed, a working fluid separation means which comprises a condenser, and means of liquefying the remaining gases for commercial use.

Abstract: Process for rendering inert an ash originating from the incineration of municipal waste, according to which the ash is subjected successively to treatment (19) with a water-soluble phosphate (20) in the presence of water, under conditions adjusted to crystallize hydroxyapatite and/or whitlockite, and to calcination (22). Artificial pozzolana, obtained by subjecting an ash originating from the incineration of municipal waste to such an inerting process.

Abstract: A liquid fertilizer application system for efficiently dispensing and placing liquid fertilizer within a furrow to minimize germination injury. The liquid fertilizer application system includes a fertilizer tube having an input opening and a discharge opening, a mounting tab and a centering bracket. The fertilizer tube is attached to a shank of a planter implement using the mounting tab and is additionally positioned by the centering bracket. The discharge opening of the fertilizer tube is located in front of a scraper attached to the planter implement seed tube. The discharge opening of the fertilizer tube is forward of the seed tube to allows for the application of the fertilizer into a prepared furrow prior to placement of the seed.

Abstract: A device for and method of fixing vertically installed cargo pressure tanks (2), particularly the type used for sea transport of pressurised petroleum products, wherein at least two cargo pressure tanks (2) constitute a liftable cassette (1), the tanks (2) of which preferably are placed in the upright position on a cassette lifting frame (4) and are interconnected by means of a guide frame (6).

Abstract: The invention discloses a wastewater ballast method that includes the steps of collecting wastewater, treating the collected wastewater, storing the treated wastewater, and discharging the treated wastewater during ballast operations.

Abstract: A canting ballast twin foil (CBTF) sailing yacht constructed according to the invention includes a sailing hull, a laterally moveable ballast suspended beneath the hull that provides a counter heeling force when the yacht is underway, and fore and aft foils that provide improved leeway control and ballast. Components are included for at least partially retracting into the hull at least one of the ballast-supporting strut, the fore foil, and the aft foil.

Abstract: A remote tiller control system includes a drive unit mounted to the tiller. The drive unit is adapted to move the tiller back and forth when selectively powered. A handheld remote control transmitter unit is provided to remotely control the drive unit and thus the position of the tiller. The drive unit includes a motor-drive gear that engages a curved rack. The motor is fixed to the tiller while the rack is fixed to a control arm. The end of the control arm is tied off to the boat to create the leverage needed to counteract the steering force on the tiller. Rotation of the gear against the rack creates a moment which drives the tiller.

Abstract: A cleat assembly having a base adapted for mounting on a surface with the base having at least one depending hollow cylindrical guide tube which extends through the mounting surface The cleat assembly includes a cleat member having a head adapted to be received by and seated on the cleat base and at least one cleat post which is received in the base guide tube and reciprocally movable therein. An elastomeric keeper member is attached to the cleat post and frictionally engages the guide tube providing infinitesimal positions of adjustment. The elastomeric keeper member in one embodiment has a faceted surface with longitudinally extending grooves to allow passage of liquids and debris. The keeper elements may be secured to the cleat posts by fasteners which serve to radially expand the elastomeric keepers. Additonal areas of cushioned frictional contact are provided between the post and guide tube to dampen rattling.

Abstract: A launch tube system has two concentric sleeves. An inner sleeve having holes formed therethrough defines a launch tube, and an outer sleeve surrounds the inner sleeve and is spaced apart therefrom. One or more flexible bladders are disposed between the inner outer sleeves. When filled with fluid, the flexible bladder(s) expands and extends into and through the holes and into confines of the inner sleeve to thereby form shock isolation for a projectile housed in the inner sleeve.

Abstract: A watercraft is disclosed that includes a hull, a deck supported by the hull, a propulsion system that is mounted to at least one of the hull and the deck, and a helm that is connected to the deck and configured to control the direction of the watercraft. A pole is mounted to the deck and a compensation device is operatively connected to at least one of the deck and the hull. A controller is in communication with the compensation device, and a sensor is operatively connected to the pole and in communication with the controller. The sensor is configured to sense a pulling force exerted on the pole and communicate a signal regarding the force to the controller. The controller is configured to send a signal to the compensation device based on the signal from the sensor to reposition the watercraft.

Abstract: An under dock floatation system includes a float having a shape-fit projection for nesting against a concrete dock to rehabilitate a degraded free board of the dock and/or to increase a weight bearing capacity of the dock.

Abstract: Method for producing a floating base, which base is made up of a number of coupled-together base elements, characterized in that floating elements and rigid elements are supplied first, after which a number of floating elements and a number of rigid elements are joined together, wherein each base element is assembled from floating elements and rigid elements that have been joined together in this manner, after which a number of base elements thus formed are coupled together so as to form the floating base.

Abstract: A corrosion resistant connection system including a base structure, a threaded orifice in the base structure, a seal about the threaded orifice and a threaded stud with a distal end, a proximal end, and an intermediate shoulder defining a sealing surface opposing a support surface. The distal end of the threaded stud is received in the orifice of the base structure driving the sealing surface of the shoulder to engage the seal to prevent corrosion of the threaded orifice, while maintaining electrical continuity. A terminal is disposed about the proximal end of the threaded stud seated on the support surface of the shoulder. A threaded nut is disposed about the proximal end of the stud engaging the terminal.

Abstract: The present invention relates to saddle-riding type watercraft and other small watercraft. In an embodiment, the invention is a small watercraft capable of reducing noise by utilizing the sponson. For example, a small watercraft is provided with a sponson made of synthetic resin, characterized in that within the sponson there has been fixed a weight matched to the frequency of the hull to thereby have a function as a dynamic damper. In an embodiment, the weight is a plate-shaped weight made of metal along the longitudinal direction of the sponson. In an embodiment, the weight is embedded in the sponson along the longitudinal direction thereof.

Abstract: An indicator device for alerting the driver of a pickup truck to the orientation of the tailgate includes a housing assembly and an indicator assembly carried by and extending from the housing assembly. The housing assembly is attached to the tailgate of the pickup truck in a position that causes at least a portion of the indicator assembly to extend from the side of the truck so that the driver can see the extending portion in the side view mirror of the truck. Viewing the position of the indicator assembly allows the driver of the truck to ascertain the position of the tailgate.

Abstract: This invention relates to a device and a method for allowing performance of several separate treatment of a teat of an animal. The device includes a cup-shaped body (1) having a surface (2) defining an inner space (3), which is arranged to receive the teat of the animal. The device also includes a first delivery mechanism arranged to provide a first treatment by supplying a first medium (4) to the teat via at least a first passage having a plurality of openings (10, 18) to the inner space (3) and at least one additional delivery mechanism arranged to provide an additional medium (13, 26, 28) to the teat, via at least an additional passage having a plurality of openings (10,18) to the inner space(3). Thereby, the device provides at least two different treatments of the teats at different occasions.

Abstract: A mammal milking device includes a milk collection container, a vacuum generating device, and a teat attachment member. The teat attachment member is formed such that it forms an angle of between about 45 and 135 degrees between the teat attachment end and the vacuum attachment end. The vacuum generating device operates to pass milk from a mammal's teat, through the teat attachment member, and into the milk collection container. The teat attachment end is configured with a predetermined size for attachment to relatively small teats.

Abstract: A circular litter box having a scoop removal remounted in a scoop holder which is pushed around the sidewall of the box to scoop the box. The mounting mechanism for the scoop causes the scoop to assume a relatively vertical position during scooping, to minimize formation of a wave of litter in front of the scoop as it is rotated, but causes the scoop to assume a more horizontal position as the scoop is removed, so the collected waste will not spill from the scoop during removal.

Abstract: A pet toilet comprising a shallow tray 2, a plate-shaped urine absorbent mat 3 which is put in the tray 2, and a perforated film 4 which has a number of openings H and covers the entire upper surface of the absorbent mat 3 is disclosed. The openings H of the perforated film 4 have a sidewall extending from one side to the other side of the film. The perforated film 4 is fixed at such a position that at least the lower end of the sidewall of the openings H is in contact with the upper surface of the urine absorbent mat 3.

Abstract: A system and method for measuring an animal includes a light source and an optical source. The light source, which is preferably an array of monochromatic light emitting diodes, at least partially backlights one or more of the animal's legs. The optical sensor or device, which is preferably a single dimension camera or charged-coupled device, opposes the light source and obtains an image that includes silhouettes of one or more legs of the animal. A processor, such as a computer with software and data storage, determines measurements, such as the approximate skeletal trunk length of the animal, from the silhouetted legs in the image. One or more first ultrasound transducers can be arranged to determine an approximate height of the pelvic region, and one or more second ultrasound transducers can be arranged to determine an approximate width of the pelvic region.

Abstract: A cooling system and method of cooling an engine are disclosed. The cooling system includes a first closed loop that circulates coolant at a first temperature and a second closed loop that circulates coolant at a second temperature that is different than the first temperature. Such a construction provides two separate cooling temperature circuits for cooling equipment at different cooling temperatures.

Abstract: In a method for controlling the heat in an internal combustion engine for a vehicle with a coolant circuit and actuable devices for influencing the heat balance of the internal combustion engine, wherein a coolant temperature and further operating parameters of the internal combustion engine are recorded, the actuable devices are operated as a function of the coolant temperature and the further operating parameters of the internal combustion engine in such a manner that an output value for determining a control variable is provided by means of a basic characteristic diagram as a function of the rotational speed and the load on the internal combustion engine, and this control value is corrected by means of a controller as a function of the coolant temperature and/or the further operating parameters.

Abstract: A cooling system of an outboard motor provides back and forth flow of water from one side of an exhaust passage to the opposite side in order to avoid the creation of stagnant pools of water within which minerals and debris can collect. This result is accomplished by causing the cooling water to flow back and forth from one side of the exhaust passage to the other so that all portions of the water passages are forced to conduct water through them at a relatively high velocity. A water reservoir is formed between an exhaust conduit and an oil reservoir in order to reduce the operating temperature of the oil within the reservoir.

Abstract: A water-cooled cylinder head for a multicylinder internal-combustion engine, has a cylinder head housing which has charge cycle ducts, passage bores for receiving cylinder head screws, valve stem guides for inlet and outlet valves controlling the charge cycle ducts, and part-spherical combustion chamber caps which are bounded by a water cooling jacket on a side facing away from the combustion chamber. One spark plug dome respectively has an opening leading to the combustion chamber of the respective cylinder. For reinforcing the cylinder head housing and/or for supporting the part-spherical combustion chamber caps, a rib structure is integrated in the cylinder head housing.

Abstract: A water-cooled cylinder head is provided for a multicylinder internal-combustion engine having two inlet and outlet valves per cylinder. The cylinder head has a cylinder head cooling space with inflow and outflow openings for the coolant which is integrated in the cylinder head housing and extends above a part-spherical cap forming a combustion chamber volume. Water cooling spaces are formed at least in areas around a receiving opening for a spark plug arranged centrally in the cylinder head housing and around the two outlet valves. The water cooling spaces are mutually connected by way of a common annulus section. At least the common water cooling jacket annulus section has a volume which remains an essentially constant distance from the combustion chamber volume, so that, at least in this area, the wall thickness of the part-spherical combustion chamber cap extends in a uniform manner and to close to the combustion chamber volume.

Abstract: A combustion-engined setting tool for driving fasting elements such as nails, bolts, pins in an object, includes a combustion chamber (13), a fuel source (11), a fuel conduit (12) connecting the fuel source (11) with combustion chamber (13) for feeding fuel thereinto, and at least one metering device (30) for metering a predetermined amount of fuel for effecting a setting process and having at least one variable volume metering chamber (31), and a displaceable piston body (34) for a pulsed ejection of fuel from the metering chamber (31).

Abstract: In an insulator (21) inserted between a carburetor (30) and a cylinder (3) for a purpose of insulating heat, there are formed an intake passage (22) connected to the carburetor (30), and a pair of first air passages (23) connected to respective air flow paths (14) communicated with a pair of scavenging ports (10) formed in the cylinder (3). Air control valves (25) are respectively provided within a pair of first protruding portions (33) communicating with an air cleaner (32), and are connected to the pair of first air passages (23) via a pair of connection members (35). Portions from the air passages within the pair of first protruding portions (33) to the pair of first air passages (23) are respectively formed as smooth air passages in which a change of an inner diameter cross sectional area in a connection portion is small.