A pipe handling apparatus has a frame, a boom pivotally connected to the frame so as to be movable between a first position and a second position, an arm extending outwardly of the boom when the boom is in the second position, a gripper affixed to the end of the arm opposite the boom, a first line having a first end affixed to the boom, a second line interconnected to an opposite end of the first line and connected to the frame, and an actuator interconnected to the first and second lines. The actuator changes an angular relationship of the first and second lines so as to selectively tension the lines. The second line includes a first cable offset from linear alignment with the first line and a second cable extending in angular relationship with the first cable.

A lifting apparatus for a lift system is disclosed. The apparatus includes a) a motor adapted for providing a lifting force, b) at least one connector operatively connected to the motor, the connector adapted for connecting a load-bearing component to the motor, c) an information receiver for receiving a load limit information about the load-bearing component, d) a motor controller electrically coupled to the motor and the information receiver, wherein the motor controller is adapted to limit the lifting force of the motor based on the load limit information received by the information receiver.

Various embodiments include a service apparatus for a turbomachine. The service apparatus can include: a frame for coupling to an opening in the turbomachine; a bridge member operably coupled to the frame and spanning a width of the frame, the bridge member being substantially movable along a length of the frame; and a crane member operably coupled to the bridge member, the crane member being substantially movable along the width of the frame, wherein the crane member includes at least one attachment device for attaching to an object within the turbomachine.

A method and an apparatus for handling and/or servicing components of a wind turbine, such as installing and/or dismantling components into or from a wind turbine nacelle or such as servicing exterior components such as blades, hub, tower and nacelle of the wind turbine are disclosed. The gripping apparatus comprising at least one arm for gripping around the wind turbine tower, the at least one arm capable of forming a gap between gripping elements of the gripping apparatus. The at least one arm extends around the entire outer circumference, seen perpendicular to a horizontal plane, of the wind turbine tower.

The present invention provides devices, apparatuses, and systems for lifting and mounting of clinical- and research-related equipment. In particular, the present invention provides a lift and mount system for mass spectrometers (e.g., for time of flight (TOF) mass spectrometers (MS)).

The present disclosure relates to a hydraulic braking apparatus for a crane drive for carrying out crane work, in particular a slewing gear, having at least one hydraulic stopping brake for braking the drive movement of the crane drive in an emergency situation, wherein at least one pressure regulation valve is provided for controlling at least one stopping brake to ensure a time-delayed braking torque build-up.

Disclosed is a hoist apparatus having an improved structure to load an object to be transported in a horizontal direction. The hoist apparatus includes a travel unit to travel along a rail, a carrier unit coupled to the travel unit so as to move in a first direction, and a cart unit coupled to the carrier unit so as to move in a second direction different from the first direction, wherein the cart unit includes a body portion, in which an object to be transferred is located, and a drive portion to drive the body portion in the second direction.

A crane apparatus includes: a telescopic boom including a plurality of boom members, the telescopic boom performing telescopic motion by moving the plurality of boom members one by one using one telescopic cylinder; a condition input part configured to receive, as input, a condition for a crane operation including at least a weight of goods suspended by the telescopic boom, a height to which suspended goods are lifted, and a moving radius of the suspended goods; and a telescopic pattern selecting part configured to select a telescopic pattern that allows the crane operation under the condition inputted to the condition input part.

The Invention provided is a hydraulic powered down hole reciprocating pump traveling valve component to provided lifting hydraulics on the down stroke using the derived motion and pressure of petroleum liquids and gasses, such as oil, water and natural gas and also utilizing the frictional traveling forces driven by the surface equipment. Designed to utilize the elements within the pumping apparatus to obtain the hydraulic power within and transfer the energy's force to the exposed bottom end of the pressure locked traveling ball valve adjacent within the ball valve containment cage, providing ultimate lifting power to open the ball valve on the initiation of the down stroke. The component consist of a Hollow Hydraulic Power Shaft, Hollow Pressure Motion House, and a Fluid Cavity Power Drag Plunger.

In the method and apparatus of the invention, the process point is taken into account when the condition and performance of a control valve are monitored. In the condition monitoring of the valve, process measurements are used in addition to measurements inside the valve in such a manner that the process measurements identify the operating point at which the valve operates, and the measurements inside the valve are observed at these operating points to detect changes and to determine the condition of the valve. According to an aspect of the invention, the variables representing the operating point of an industrial process are considered when changes in the friction load of the valve and/or the load factor of the actuator are observed.

Disclosed is a corrugated plastic composite spring for a vehicle suspension and an apparatus and method for manufacturing the same. The apparatus includes a corrugated extrusion part, a braiding part, and a pultrusion part. The corrugated extrusion part forms a preform having a hollow corrugated structure. The braiding part weaves a three-dimensional woven fabric on the preform. The pultrusion part impregnates the three-dimensional woven fabric with thermosetting resin.

A method and apparatus for fabricating microbraided structures is provided. A microbraiding device includes first and second carrier members that are movable with respect to each other. Each carrier includes a plurality of shelters. Spool-less strands of microfiber are retained in shuttles that are movable between the first and second shelters under magnetic forces. The microbraid structure is fabricated as the shuttles move between the first shelters, and as the first carrier member moves relative to the second carrier member.

An elastic longitudinal net (1) for longitudinal food products, especially cold meat products, is formed as a sleeve having at least one longitudinal main warp (21) of a tightening chain weave having at least one substantially inextensible thread (213, 214), and at least one weft (3) having at least one elastic fiber and circumferential sections (31), the ends of which are interweaved substantially perpendicularly between the substantially inextensible fiber and longitudinal sections (32) existing between neighboring circumferential sections (31) and running in a concurrent manner relative to and weaved with at least one main warp (21). The longitudinal sections are interweaved through at least one main warp (21) substantially perpendicularly relative to its longitudinal axis, passing through loops (215, 216) of the at least one substantially inextensible thread (213, 214) of the main warp, forming a serpentine run having at least two external loops (321).

A method of braiding a stent includes braiding a number of elongate filaments around a mandrel using tensioned braiding carriers without spooling the filaments to the tensioned braiding carriers to form a braided stent having atraumatic ends.

A tower control system, under an indexing mode of operation, receives a first signal from rail yard equipment. In response to the first signal, the tower control system establishes a positioning mode of operation. Under the positioning mode of operation, and in response to actuation of an interface of the tower control system, the tower control system sends a second signal to a lead powered rail vehicle of a consist. The second signal includes a first command to adjust a throttle setting of the lead powered rail vehicle, along with a second command to idle a throttle of any remote powered rail vehicle of the consist.

The invention relates to an apparatus and method which allows information representing a state or condition or an action to be performed as part of a control system to be present to one or more users. The information is selected and generated in a manner which removes or at least reduces the risk of potentially catastrophic error occurring which would be possible if, for example, the information is corrupt or lost during subsequent transmission, remote processing and/or displaying. One such use of the apparatus and method of the invention is in relation to transport vehicles and the control of the movement of said vehicles along predefined geographical paths.

A method and system for verifying trackside conditions in safety critical railroad applications by reporting the status of trackside signals and switches to a remote train control system. The system comprises at least one sensor for providing trackside conditions electrically connected to a circuit for providing trackside conditions to a railroad, said sensor being powered by voltage applied to the circuit such that the sensor is energized only when said electrical component is engaged. The system and method further comprises a method and system which is failsafe and which enables the control system to independently verify signals from each sensor.

An apparatus for operating a railway system, the railway system comprising a lead vehicle consist, a non-lead vehicle consist and railcars, the apparatus including a first element for determining a slack condition of railway system segments, wherein the segments are delineated by nodes, and a control element configured to control an application of tractive effort or braking effort of the lead vehicle consist or the non-lead vehicle consist.

An assembly for molding and demolding hardened cementitious products comprises a flexible mold and a demolding apparatus. The flexible mold has a top side with separate openings for receiving cementitious material therein for hardening thereof, an opposite closed rear side and a perimeter. The apparatus for demolding the hardened cementitious products from the flexible mold comprises a conveyor, a holding member, a clamp, and a movable member. The conveyor conveys the flexible mold. The clamp grips a portion of the perimeter. The holding member engages the mold. The movable member moves the clamp and the clamped portion of the mold about the holding member thereby disengaging the flexible mold from the cementitious material.

An insulated concrete form including of first and second spaced sidewalls forming a cavity therebetween, said sidewalls having an inside surface and interconnected by a plurality of form ties, and a form insert made of an insulative material positioned adjacent the inside surface of at least one sidewall which thereby increases the R-value of the resulting structure.

In a process for producing half-shells (2) which are made from a dough for bakery products and are characterized by an annular orifice rim (6) with a finished surface, by producing a wafer sheet (1) comprising a plurality of half-shells (2) connected to one another by an interconnecting wall (4), by forming and baking said dough in a mold with the use of a mold formed by two complementary plates (12, 14) having respective front surfaces which, as a result of the fitting together of the two plates, can define a forming cavity having a shape generally corresponding to that of said wafer sheet (1), a mold is used wherein the front forming surface of at least one of said plates has shaped portions (26) which project towards the front surface of the other plate (12) and which can define, in the dough that is subjected to baking in the forming cavity, a notch (24) in the interconnecting wall (4) adjacent each half-shell (2), wherein the plates can be fitted together in an initial position in which the forming cavity has a volume smaller than the volume of the wafer sheet to be obtained, the dough is subjected to a first, partial baking step in the forming cavity with the molds fitted together in the initial position, while the volume of the forming cavity is kept constant until the dough is partially solidified, the dough is then subjected to finishing baking with an increase in the volume of the forming cavity, in order to obtain a wafer sheet (1) wherein the half-shells (2) are connected to the interconnecting wall (4) by an annular region (28) having a thickness which is substantially less than the thickness of the interconnecting wall (4); the half-shells can thus be separated from the wafer sheet by a slight pressure exerted in a direction perpendicular to the plane of the wafer sheet.

A method of forming a mesh by a molding a link element around other link elements to form a mesh in which the interlinking link elements are formed as continuous unjoined loops by a molding process. An apparatus for forming a mesh including a plurality of first cavities for accommodating first link elements and a plurality of second cavities for forming interlinking link elements. The method and apparatus allow the continuous production of mesh formed of a range of materials including plastics materials.

An apparatus for making frozen comestibles including a base having a plurality of apertures formed within said first site thereof, and a plurality of molds attached to or formed integrally with the base. Each of the molds includes a receiving surface and an opening aligned with a corresponding one of the apertures of the base. Each of the molds is moveable between a first position, in which a substantial portion of at least one mold is positioned within the interior portion of the base and said receiving surface forms a molding cavity that is adapted to receive a comestible to be frozen, and a second position, in which a substantial portion of the mold extends outwardly from the first side of the base and the receiving surface of the mold is exposed externally.

A method for demolding concrete blocks which are cast in a resilient mold supported in a rigid frame, the mold having a top surface and at least one cavity with an opening on the top surface, which cavity holds a cured cast concrete block. The mold has two opposing edges. The demolded blocks are stacked on a collection surface. A support is positioned over the cavity and the mold, the support and the frame are inverted and positioned in demolding apparatus. After two opposing edges of the mold are engaged by the demolding apparatus, the support is withdrawn to allow the mold to sag. The blocks may release from the mold and fall onto the collection surface. If any blocks remain in the mold, a plunger mechanism is pushed against the sagging mold to release the blocks. Guide members may facilitate positioning the blocks on the collection surface.

A mold and method for making a hollow core concrete block. The mold has two opposing side walls; a bottom wall; a front wall; a top side with an opening through which the block can be removed from the mold; a cover, and a rear side through which liquid, such as concrete, can be poured into the mold. Extending from the two side walls are a pair of trunnions about which the mold is rotatable, such that when the mold is suspended by the trunnions and the mold is empty, gravity rotates the mold from a block-removal orientation in which the top side faces upwards to a mold-filling orientation in which the rear side faces upwards. The trunnions are also positioned such that when the mold is filled with the liquid, gravity rotates the mold from the mold-filling orientation to the block-removal orientation.

A device for controlling the firing of an airsoft gun is provided with a valve under a butt. Pressurized air from a high pressure air canister is directed to a rear section of a chamber in the butt. Opening of a valve directs the pressurized air further into a front section of the chamber via the valve so as to bring a plastic pellet to a ready to fire position. Closing of the valve causes pressurized air in the chamber to push a plunger forward to fire the plastic pellet.

A toy pump action rifle for launching discs having an outer housing, a stock, a grip, a trigger, a handle for cocking the rifle and a revolving drum for storing multiple discs. Within the housing is a mechanism for removing discs, one at a time, from the drum where the discs are arranged in a first position, rotating each disc 90° to a second position, and transporting each disc to a discharge chamber. The mechanism includes a transfer arm to remove each disc from the drum, a disc pocket for receiving the removed disc, the pocket being rotatable to reorient the disc, and disc pocket also being slidable to carry the disc to the discharge chamber. Activation of the trigger releases a cocked launch arm that snaps forward and strikes the disc to cause discharge.

An adjustable mechanical vibration limiting and absorbing device for an archery bow including a hollow housing and two groups of elastomer washers provided in the hollow housing with a means for preventing the first group from advancing out of the hollow housing and separating the first group from the second group. In addition, a fastener extends through the center of the first and second groups of elastomer washers and a lock nut and weight are provided on the projecting end of the fastener.

Methods, apparatus, systems, and kits for loading paintballs into a feed tube of a paintball gun are disclosed. A loader includes a chamber for holding paintballs, a feed mechanism having a rotational feeder within the chamber that feeds paintballs from the chamber along a feed channel when rotating to fill the feed tube, and a drive mechanism that drives the rotational feeder of the feed mechanism, ceases to drive the rotational feeder responsive to stoppage of the rotational feeder, and periodically attempts to rotate the stopped rotational feeder. Paintballs are loaded from a loader into a feed tube of a paintball gun by driving a rotational feeder within the loader, the rotational feeder configured within the loader to feed paintballs into the feed tube when rotating, ceasing to drive the rotational feeder responsive to stoppage of the rotational feeder, and periodically attempting to rotate the stopped rotational feeder.

A double-magazine (“Dmag”) able to house projectile ammunition for a projectile launcher having a first ammunition channel, a second ammunition channel, and a flexible projectile control bar (“FPCB”) is disclosed. In one embodiment, the first ammunition channel contains a first set or column of projectiles and the second ammunition channel which is situated in parallel to the first ammunition channel is configured to house a second set of projectiles. Dmag also includes a follower with a follower lock capable of moving along the first ammunition channel. The follower is configured to push the first set of projectiles toward a first ammunition supply port of the first ammunition channel. The FPCB has a first flexible flap which keeps the first set of projectiles from reaching the loading port of the launcher until the follower lock is released.

The apparatus for mounting at least one dampener and/or stabilizer to an archery bow to absorb shock and vibration realized by an archer upon the release of the archery bow. The present invention provides an elongated support structure releasably connectable to the at least one dampener and/or stabilizer. A releasable fastener is connected to one end of the support structure, and the releasable fastener is releasably connectable to the archery bow such that the support structure is extendible in a cantilevered position relative to the archery bow.

A precision multi-purpose machining apparatus for facilitating lathing, milling, drilling, sawing or routing operations typically using a rotary-type cutting tool. In a preferred embodiment the multi-purpose machining apparatus of this invention is characterized by an elongated support frame and a cutting tool mount cradle which is adjustably mounted on the support frame for receiving a cutting tool, such as an electric-powered DREMEL (trademark) rotary cutting tool. The support frame is capable of resting in a horizontal position, in which the cutting tool can be fitted with a cutting tool bit and the frame fitted with alternative workstock mounting attachments, to facilitate various lathing operations on a wooden or aluminum workstock. Alternatively, a saw table and saw blade can be removably mounted on the horizontal support frame and the cutting tool becomes a saw motor, the rotating shaft of which is connected to the saw blade by means of a drive belt, to facilitate various sawing operations. In another application, the frame can be disposed in a vertical configuration, in which a rotary table is removably mounted on the support frame and the cutting tool fitted with a milling blade or drill bit to facilitate milling and drilling operations, respectively. Alternatively, a router table can be removably mounted on the vertical support frame or on the rotary table, and a router bit mounted in the cutting tool to facilitate router operations.

A way of making small, fragile, decorative handles on a lathe is disclosed along with tools for gluing pen-tubes into these handles is shown. Use of these tools and methods of use allows wood turners to avoid excessive rework and mess associated with the gluing process of making pen blanks while assuring better product due to more complete and uniform distribution of the adhesive layer.

A cutter head for surfacing a flitch, the cutter head including a shaft, a blade non-rotatably mounted on the shaft, wherein the flitch is surfaced by rotating the blade, a bushing including a bore, wherein the shaft runs through the bore, wherein a flange is eccentrically formed about the bore, a guide mounted on the flange of the bushing, wherein the flange axially offsets the guide with respect to the shaft, wherein the guide is arranged to support the cutter head against the flitch while the cutter head is surfacing the flitch, and wherein a radial distance between a tip of the blade and the guide determines a cutting depth of the cutter head, and wherein due to the guide being mounted on the eccentrically formed flange, the radial offset is determined based on a rotational orientation of the bushing about the shaft.

A technique for lowering power loss involved in supply of high-frequency electric power to an ignition plug. The ignition plug includes a tubular insulator having an axial bore extending therethrough; a center electrode disposed in the axial bore; a metal terminal disposed rearward of the center electrode in the axial bore, electrically connected to the center electrode, and supplied with high-frequency electric power from an external source; a metallic shell disposed to circumferentially surround the insulator; and a ground electrode electrically connected to the metallic shell and adapted to generate plasma in cooperation with the center electrode through supply of high-frequency electric power to the metal terminal. At least a portion of the inner surface of the axial bore is coated with metal coating. The center electrode and the metal terminal are in electrical contact with the metal coating.

A high-pressure discharge lamp having an arc tube with a casing made of glass. The arc tube includes a light-emitting part and sealing parts connected to the light-emitting part. A pair of electrode rods are disposed within the glass casing such that their tips face each other with a gap therebetween and project into the discharge space, and their base ends are embedded in the sealing parts and overlap surfaces of metal foils provided in the sealing parts. Each base end is coated with a coating foil made of metal and having a C-like cross section with a slit formed between edges thereof. An end of the coating foil farthest from the light-emitting part is located closer to the light-emitting part than an end of the metal foil closest to the light-emitting part.

A method and apparatus for separation, concentration, and/or applying a biological or bio-engineered fluid. Generally, the fluid application device includes a sprayer body to enable the application of the fluid and a container adaptable to enable the separation of the fluid into at least a first component and a second component. The container is releasably coupled to the nozzle. The nozzle is adapted to withdraw at least one of the first component or the second component from the container after the fluid has been separated to apply the fluid to a selected site.

A sealer gun that discharges a liquid of a coating agent or filler from a nozzle on its tip is securely prevented from producing dripping that arises as a liquid drips from the nozzle tip and remains when the liquid discharge stops. A pump including a cylinder and a freely movable piston fitting therein is assembled onto a discharge cylinder of the sealer gun, an operation rod interlocked with the pump piston and a grip are interlocked via an interlock mechanism to perform pump operation of suction-discharge by movement of the piston caused by pivoting of the grip, and a suction-discharge aperture of the pump is positioned in an internal space of the nozzle, and configured so that when the liquid discharge sops by releasing the grip, a negative or positive pressure is introduced into the nozzle because of the pump operation caused by resilient pivoting of the grip.

A dispenser including a chamber having a cavity, a spout in communication with the cavity and having an inner surface, a rotatable dial in communication with the spout and having an outer surface, and wherein the dial is positioned at least partially within the spout and rotates coaxially with the spout for dispensing a product within the cavity.

Embodiments herein relate generally to distribution of flow into vessels containing packed beds of media. An example application of such beds is to pressure swing or temperature swing adsorption systems. Systems herein may include a vessel and a distributor for distributing flow into a lower portion of the vessel. The system may include: a vessel comprising a top head and a bottom head; and a bottom head feed/effluent nozzle. A lower distributor having at least one flow permitting surface is disposed within the vessel and encompasses an inlet of the bottom head feed/effluent nozzle. A flow gap is formed between a bottom portion of the lower distributor and the bottom head feed/effluent nozzle.

Apparatus and method for gravity-augmented preload of drive wheels in a monorail vehicle travelling along a guide rail bearing and contact surfaces that are non-parallel with the gravity vector. The vehicle has a structure defining a pivot location against the bearing surface, as well as first and second assemblies for engaging the rail on the bearing and contact surfaces, respectively. The vehicle is mounted so its center of gravity is at a rear longitudinal offset rrl from the pivot location and a vertical offset rvert from the guide rail. A force and moment balance thus created in a normal load on a drive wheel engaged with the bearing surface at the pivot location, where the load value exceeds a standard normal load generated by the mass of the monorail vehicle alone.

Monorail vehicle that travels on a non-featured rail with substantial profile variation and controls roll attitude, lateral location, and loading through judicious placement of the vehicle's center of gravity without using springs or suspensions. The vehicle has a bogie for engaging the non-featured rail so the center of gravity has a lateral offset r1 from the rail centerline to produce a roll moment Nr determined by vehicle's mass and value of r1. The center of gravity also has a vertical offset r2. The bogie uses first and second assemblies for engaging the rail to produce a pair of surface normal reaction forces to thus control roll attitude and loading by the placement of the center of gravity, thereby enabling accurate alignment of the monorail vehicle.

A drive system for a transport apparatus includes a plurality of permanent magnets connected to the transport apparatus, a plurality of stationary windings exposed to a field of at least one of the plurality of permanent magnets, a control system for energizing the stationary windings to provide magnetic force on the transport apparatus, and an arrangement of ferromagnetic components proximate at least one side of the transport apparatus for providing passive stabilization of lift, pitch, and roll of the transport apparatus.

A zip line or trolley system kit for propelling a person or an object using gravity along an extended cable line suspended between two trees or towers. The zip line system having a frame with one or more wheels, an adjustable length seat, a handle and a braking system for slowing the speed of descent of the zip line system. The trolley system having at least two wheels spaced apart at a suitable distance to increase ride smoothness and improve sliding of the zip line system along the extended cable. An actuator of the braking system allows for the rider to control of the speed of descent of the zip line system.

A method for manufacturing high speed pressure compensator-type drip irrigation tubes and the tubes obtained thereby having absolute radial orientation of molecular chains, the orientation imparting strength as well as flexibility to the tube material. The said method comprises extruding a tube using a plurality of extruders; blowing up the extruded tube by introducing a pressure inside the tube relatively higher than the pressure outside the tube; drawing the blown tube simultaneously to the blowing of tube; flattening the blown tube by heat welding the collapsed halves together and forming a tape immediately, subsequent to the process of blowing and drawing the tube; extrusion of a bonding polymer on one border of the tape; printing flow channels into the hot and viscous bonding polymer; and forming a tube by lengthwise folding the tape and heat welding the overlapping borders together using the bonding polymer.

An apparatus and method for coating a substrate using one or more liquid raw materials, includes: at least one atomizer for atomizing the one or more liquid raw materials into droplets, charging means for electrically charging the droplets during or after the atomization and a deposition chamber in which the droplets are deposited on the substrate, the deposition chamber being provided with one or more electric fields for guiding the electrically charged droplets on the substrate. According to the invention there is a charging chamber arranged upstream of the deposition chamber and provided with charging means for electrically charging the droplets.

Methods and systems control an irrigation system that includes an irrigation controller, a valve actuator, and at least one irrigation sensor connected by a communication circuit. A sensor charging pulse having a temporal duration less than a solenoid actuation time threshold for a solenoid is provided over the communication circuit. The sensor charging pulse charges a charge storage device in at least one irrigation sensor. A series of addressing pulses is also generated over the communication circuit, which indicate a device identifier of at least one irrigation sensor. The series of addressing pulses activate at least one irrigation sensor having the device identifier indicated by the series of addressing pulses such that the activated irrigation sensor provides a sensor signal indicative of an irrigation condition to the irrigation controller via the communication network.

An apparatus that supplies washer liquid of a vehicle, in which a washer liquid hose is inserted into a lower end of a pivot shaft by applying a check valve to the lower end of the pivot shaft. In addition, the washer liquid hose is inserted into the pivot shaft and a pipe, to secure a hose route during wiper operation.

In order to improve a high-pressure cleaning apparatus comprising a pump unit adapted to be driven by motor, a first connection element for detachable connection to a liquid supply conduit, said first connection element being connected to the suction side of the pump unit, and a second connection element for detachable connection to a high-pressure conduit, said second connection element being connected to the pressure side of the pump unit, such that it can be handled in a more user-friendly manner, the invention proposes that the first connection element and/or the second connection element be oriented in a direction facing upward away from a supporting surface for the high-pressure cleaning apparatus.

A fuel injection nozzle for a gas turbine combustion chamber with a film applicator (1) is provided with several fuel openings (2). Center axes (5) of the fuel openings (2) through the film applicator (1), with regard to their radial orientation, are essentially parallel to the main flow direction (6) of the air.