Abstract: A signal line is a linear conductor provided within a laminated body. A first ground conductor is provided on a positive direction side in a z axis direction within the laminated body, compared with the signal line, and overlaps with the signal line in a planar view seen from the z axis direction. A second ground conductor is provided on a negative direction side in the z axis direction within the laminated body, compared with the signal line, and overlaps with the signal line in the planar view seen from the z axis direction. Via hole conductors connect the ground conductors to each other. In the first ground conductor, a plurality of opening portions are arranged along the signal line in the planar view seen from the z axis direction. The via hole conductors are provided between the opening portions adjacent to one another, in an x axis direction.

Abstract: A thermally enhanced wiring board with thermal pad and electrical post includes a metal slug, a metal pillar, a patterned interconnect substrate, an adhesive, a build-up circuitry and optionally a plated through hole. The metal slug and the metal pillar extend into apertures of the patterned interconnect substrate and are electrically connected to the build-up circuitry. The build-up circuitry covers the metal slug, the metal pillar and the patterned interconnect substrate and can provide signal routing. The metal slug can provide thermal contact surface, and the metal pillar can serve as power/ground plane or signal vertical transduction pathway.

Abstract: A stiffener-integrated flexible printed circuit board includes: (A) a stiffener; (B) a thermosetting adhesive on the stiffener (A); (C) an insulator film on the thermosetting adhesive (B); and (D) a wiring-pattern-equipped film on the insulator film (C), the insulator film (C) containing at least (a) a binder polymer and (b) spherical organic beads. This provides a stiffener-integrated FPC which is excellent in adhesion between a thermosetting adhesive of a stiffener and an insulator film and which is small in warpage.

Abstract: Disclosed herein is a touch panel including: a transparent substrate; conductive patterns formed on the transparent substrate such that wavy lines thereof are spaced apart from each other and arranged in parallel with each other, each of the wavy lines having a sine wave form where first peaks and second peaks alternately continue along a length direction thereof; and connecting patterns formed on the transparent substrate, each of the connecting patterns electrically connecting between the wave lines, so that good visibility can be achieved even though electrodes and wirings are disposed in an active area of the transparent substrate, by forming uniform pattern of electrodes and wirings on the transparent substrate.

Abstract: There is provided an epoxy resin compound including an epoxy resin including a crystalline epoxy, a curing agent, and an inorganic filler. Also, there is provided a radiant heat circuit board including a metal plate, an insulating layer formed on the metal plate; and a circuit pattern formed on the insulating layer, in which the insulting layer is formed by curing an epoxy resin compound including an epoxy resin including a crystalline epoxy, a curing agent, and an inorganic filler.

Abstract: A fabric which is formed of fibers joined together by at least one of knitting, weaving and felting techniques, which is characterized by having a first non-adhesive solid state and a second adhesive solid state, which occurs subsequent to having passed through an adhesive non-solid state.

Abstract: Disclosed herein is a composition, including a fluorine-based polymer or a perfluoropolyether (PFPE) derivative and a PFPE-miscible polymer, an anti-oxide film and electronic component including the same, and methods of forming an anti-oxide film and an electronic component. Use of the composition may achieve formation of an anti-oxide film through a solution process and electronic components using a metal having increased conductivity and decreased production costs.

Abstract: A wiring board with built-in metal slugs includes a dielectric hybrid core and build-up circuitries. The metal slugs extend into apertures of a stiffener of the hybrid core and are electrically connected to the build-up circuitry. The build-up circuitry covers the metal slugs and the stiffener and provides signal routing. The metal slugs can serve as power and ground planes for the wiring board.

Abstract: Disclosed herein are a printed circuit board and a method for manufacturing the same, the printed circuit board including an adhesion promoter (AP) film for enhancing adhesive strength, interposed between a circuit pattern and an insulating layer above a substrate, the AP film containing any one of a first polymer, a second polymer, and an organic compound. According to the method for manufacturing the printed circuit board, there can be provided a printed circuit board having a fine circuit pattern by using the AP film having a low roughness value and having improved adhesive strength with respect to the circuit pattern.

Abstract: Provided is a substrate with a built-in electronic component that can minimize an occurrence of a deformation such as warping or distortion of the substrate with a built-in electronic component, which is caused by a difference in rigidity between a region of low rigidity and a region of high rigidity that are formed in a core layer thereof. In the substrate with a built-in electronic component, electronic components 12 are respectively housed in a plurality of housing portions 11a1 that are formed in a core layer 11a, and in the core layer 11a, a plurality of openings 11a2 filled with an insulator 11k are formed.

Abstract: An electronic apparatus and an insulation structure thereof are provided. The electronic apparatus comprises a circuit board, an insulation structure and a transformer. The circuit board has a top surface, a bottom surface and an opening extending across the top surface and the bottom surface. The insulation structure has a first standing plate and a top plate. The first standing plate is connected with the top plate, and the first standing plate is disposed on the circuit board and inserted into the opening of the circuit board. A bottom surface of the top plate faces towards the top surface of the circuit board. The transformer is disposed on the top plate of the insulation structure and on the top surface of the top plate.

Abstract: A wiring board including an insulating board formed such that an inner insulating layer is laminated under a front insulating layer, a pair of semiconductor element connection pads for a signal, formed on the front insulating layer, and a pair of strip-shaped wiring conductors formed on the inner insulating layer, having connection ends connected to the pair of pads for the signal under the pair of pads through via holes, and having parallel extending portions extending to an outer peripheral portion from the connection ends on the inner insulating layer in parallel to each other, where a part from the connection end to one part of the parallel extending portion has a width smaller than a width of a residual part, and length equal to or less than one-sixteenth of a wavelength of a signal transmitting in the pair of strip-shaped wiring conductors.

Abstract: A hybrid wiring board includes an interposer, a stopper, a stiffener and a build-up circuitry. The stopper is laterally aligned with and laterally extends beyond peripheral edges of the interposer in lateral directions. The interposer extends into an aperture of the stiffener and is electrically connected to the build-up circuitry. The build-up circuitry covers the stopper, the interposer and the stiffener and provides signal routing for the interposer. The stiffener provides mechanical support, ground/power plane and heat sink for the build-up circuitry.

Abstract: A contact area is provided on a carrier for connection to a mating contact area on a further carrier using an adhesive containing conductive particles. The contact area includes at least one recess forming a drain channel for the adhesive, extending from one edge of the contact area to an opposing edge and having a width being less than an average diameter of the particles. Alternatively, the contact area includes boreholes extending from a main surface to an opposing main surface and having diameters being approximately equal to or smaller than the average diameter of the particles in at least one direction and a cavity is formed in the carrier beneath the contact area. Alternatively, integral moldings forming a turf structure are provided on the contact area and distances between the moldings are equal to or smaller than the average diameter of the particles in at least one direction.

Abstract: A multi-cavity wiring board includes a coreless substrate, an adhesive, and a stiffener having a plurality of apertures with lateral shielding sidewalls. The coreless substrate covers the stiffener and includes electrical pads exposed from the apertures of the stiffener as electrical contacts for semiconductor devices packaged within the apertures. The aperture sidewalls of the stiffener can serve as effective lateral electromagnetic shields for the semiconductor devices within the apertures.

Abstract: A detachable solar junction box base is disclosed, having a junction box, whose left and right sides being respectively installed with a pivotal connection button, and the bottom side thereof being installed with at least an elastic snap tab, two elastic clip tabs, a first connection port and a second connection port; and a base, the body thereof being an integral base formed by two arm parts and a traverse board part, in which the two arm parts are located at the left and right sides of the base and the traverse board part is disposed at the front end of the base, and in which each of the arm parts is respectively installed with an ear seat and a pivotal connection hole at the interior corner thereof, as well as a hollow accommodation part constituted by the arm parts and the traverse board part to receive the junction box.

Abstract: A waveguide tube includes a penetration tube and a shielding pipe. The penetration tube extends from an anechoic chamber. The shielding pipe is connected to a distal end of the penetration tube. The penetration tube and the shielding pipe are made of metal and metallic powders are poured into the pipe to sealing and surround an internal electrical cable. An input pipe for the powders extends upward from a top of the shielding pipe. A top end of the input pipe is sealed with a removable upper sealing cap.

Abstract: An external part mounted electric wire 1 includes an external part 3 which is mounted on an electric wire 2 so as to be brought into engagement with a hole in a panel on which a wiring harness 25 is laid. The external part 3 is made of a resin and is formed integrally with the electric wire 2. In addition, a relative position of the external part 3 to the electric wire 2 is provided in such a position that the external part 3 can be brought into engagement with the hole in the panel.

Abstract: A wiring harness for a fire extinguishing system including a connector that has a pair of power leads and a pair of command leads. At least one zone identification element is in communication with the connector and is configured to provide a zone location assignment to the connector.

Abstract: A method of drilling a subsea wellbore includes drilling the subsea wellbore and, while drilling the subsea wellbore: measuring a flow rate of the drilling fluid injected into a tubular string; measuring a flow rate of returns; comparing the returns flow rate to the drilling fluid flow rate to detect a kick by a formation being drilled; and exerting backpressure on the returns using a first variable choke valve. The method further includes, in response to detecting the kick: closing a blowout preventer of a subsea pressure control assembly (PCA) against the tubular string; and diverting the flow of returns from the PCA, through a choke line having a second variable choke valve, and through the first variable choke valve.

Abstract: A sealed mule shoe assembly for use in directional drilling, comprising an outer mule shoe and an inner housing for containing a directional measurement tool which is slidably insertable in the outer mule shoe. The mule shoe assembly advantageously has half-moon mating surfaces which advantageously allow use circumferential seals to thereby prevent ingress of abrasive materials into the landing area between the outer mule shoe and the inner housing, thereby greatly prolonging the life of the mule shoe assembly. Such seals further make use of hydrostatic forces downhole which cause locking landed engagement of the inner tool within the outer mule shoe. Cup seals or a check valve are used to allow escape of fluid when the inner tool is inserted within the outer mule shoe, and similarly prevent ingress of abrasive fluids and drill cuttings into the area of landed engagement.

Abstract: This disclosure is related to a perforator tool and a method of using the perforator tool to perforate a formation. The perforator tool can include a first and second sleeve and optionally a third sleeve. The perforator tool can also include at least one perforation opening and at least one circulation port. The sleeves are slidably disposed within the perforator tool and can be displaced to permit perforation of the formation, block the perforation openings and open circulation ports.

Abstract: Apparatus and methods are disclosed for directionally drilling an earth formation where magnet arrays are utilized to provide net lateral force between a first member coupled to a drill bit and another member that either extends through or around the first member.

Abstract: A reamer is designed to enhance operation of a bottom hole assembly in which it is included. One or more capabilities and/or characteristics of the cutters carried by the reamer blocks of the reamer may be varied even in the same profile portion to enhance the functionality and/or durability of the reamer.

Abstract: A reamer is designed to enhance operation of a bottom hole assembly in which it is included. One or more capabilities and/or characteristics of the cutters carried by the reamer blocks of the reamer may be varied even in the same profile portion to enhance the functionality and/or durability of the reamer.

Abstract: According to the invention, a method for designing a rotary drill bit for drilling a cavity in a medium is disclosed. The method may include determining a characteristic of a drillstring with which the rotary drill bit is coupled. The method may also include determining an initial number of groups of cutters for the rotary drill bit, where each group of cutters includes a plurality of cutters substantially aligned along a different radius of the drilling face. The method may moreover include determining a characteristic of the medium relative to a characteristic of the cutters. The method may additionally include determining a characteristic of a rotational motion source used to rotate the rotary drill bit. The method may further include determining the angles of pitch between each of the groups of cutters to minimize an amount of sticking or slipping of the bit in the medium during a drilling operation.

Abstract: A polycrystalline diamond compact comprising a diamond table is formed in a high-pressure, high-temperature process using a catalyst, the catalyst being substantially removed from the entirety of the diamond table, and the diamond table attached to a supporting substrate in a subsequent high-pressure, high-temperature process using a binder material differing at least in part from a material of the catalyst. The binder material is permitted to penetrate substantially completely throughout the diamond table from an interface with the substrate to and including a cutting surface, and the binder material is selectively removed from a region or regions of the diamond table by a conventional technique (e.g., acid leaching). Cutting elements so formed and drill bits equipped with such cutting elements are also disclosed.

Abstract: Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a diamond table having an indentation in a cutting face thereof and a shaped feature in a substrate at the interface between the diamond table and the substrate, the shaped feature corresponding to the indentation in the cutting face of the diamond table. In further embodiments, a cutting element for an earth-boring tool may include a sacrificial structure positioned within an indentation in a diamond table. In additional embodiments, a method of forming a cutting element may include positioning a sacrificial structure in a mold, positioning a powdered precursor material over the sacrificial structure, and pressing and sintering the powdered precursor material to form a diamond table having an indentation in a cutting face formed by the sacrificial structure.

Abstract: Cutting elements, earth-boring drill bits having such cutting elements and related methods are described herein. In some embodiments, a cutting element for an earth-boring tool may include a superabrasive table having a recessed surface in a cutting face thereof and a shaped feature in a substrate at the interface between the superabrasive table and the substrate, the shaped feature corresponding to the recessed surface in the cutting face of the superabrasive table. In further embodiments, a cutting element for an earth-boring tool may comprise a superabrasive table positioned on a substrate, and at least one substantially planar recessed surface in a cutting face of the superabrasive table. In yet additional embodiments, a cutting element for an earth-boring tool may comprise a superabrasive table positioned on a substrate, and at least one non-planar recessed surface in a cutting face of the superabrasive table.

Abstract: A cutting element for an earth-boring drill bit may include a thermally stable cutting table comprising a polycrystalline diamond material. The polycrystalline diamond material may consist essentially of a matrix of diamond particles bonded to one another and a silicon, silicon carbide, or silicon and silicon carbide material located within interstitial spaces among interbonded diamond particles of the matrix of diamond particles. The cutting table may be at least substantially free of Group VIII metal or alloy catalyst material. The cutting element may further include a substrate and an adhesion material between and bonded to the cutting table and the substrate. The adhesion material may include diamond particles bonded to one another and to the cutting table and the substrate after formation of the preformed cutting table.

Abstract: An improved aircraft towing vehicle includes a base plate, a controller and two drive motors supported by two track assemblies. A pivoting wheel constraint mechanism rests on the base plate and includes a front roller mount, a rear roller mount and a linkage connecting the front roller mount and the rear roller mount. When the rear roller mount is pushed or otherwise urged backward, the linkage causes the front roller mount to pivot upward to confine an aircraft wheel on the base plate. A latch keep is also connected to the base plate for holding the rear roller mount in the backward position and locking the wheel constraining mechanism for moving an aircraft.

Abstract: A multi-axis articulating crawler includes a turntable assembly having a turntable, a first main beam rotatably coupled to a first side of the turntable assembly and a second main beam rotatably coupled to a second side of the turntable assembly. First and second track assemblies are rotatably coupled to the first main beam, and third and fourth track assemblies are rotatably coupled to the second main beam. The axes of rotation of the first, second, third and fourth track assemblies are perpendicular to the axis of rotation of the first and second arms. The longitudinal axes of the first and third track assemblies are on the same line and the longitudinal axes of the second and fourth track assemblies are on the same line. The track assemblies are independently driven to maneuver the crawler.

Abstract: A tracked climbing vehicle containing a compliant suspension apparatus to prescribe the distribution of forces on the adhering members in the tracked climbing machine. The compliant suspension apparatus is configured to negotiate irregularities in a climbing-surface without the vehicle tracks losing full surface contact and adhesion by distributing the loads from the climbing machine chassis to the adhering traction members in a specific prescribed fashion. The apparatus thus avoids exceeding the allowable force in any adhering traction member and significantly improves the performance of the climbing machine.

Abstract: A vehicle (100) comprising an engine (103) arranged to apply a first drive torque to a first wheel (101) for moving the vehicle (100); and an electric motor (40) arranged to apply a second drive torque to a second wheel (101) for moving the vehicle (100) when in a drive mode and to generate a current when placed in a braking mode of operation and the electric motor (40) is being driven by the second wheel (101), wherein the electric motor (40) is arranged to operate in the braking mode when the engine (103) is applying a drive torque to the first wheel (101).

Abstract: An agricultural work vehicle includes a vehicle body having longitudinally extending sides. An enclosed engine compartment is configured within the vehicle body. An air inlet is defined in side of the vehicle body for intake of air into the engine compartment. A grain bin forward of the engine compartment includes a grain bin extension skirt mounted above the grain bin. An intake housing is mounted over the air inlet in the vehicle body side and includes a forwardly extending portion mounted alongside the grain bin extension with an inlet opening oriented so as draw air primarily from an area forward of the engine compartment and above the vehicle body.

Abstract: A motorcycle windshield assembly includes a windshield having a forward surface and an opposed rearward surface. An aperture is provided through the windshield. A duct positioned in the aperture. The duct has a forward facing inlet and a rearward facing outlet positioned above the inlet. The duct has a length of at least 3.0 inches measured along a centerline between the inlet and the outlet. The outlet extends rearward of the rearward windshield surface and is oriented at an angle that is at least about 21 degrees and not more than about 35 degrees with the windshield.

Abstract: Hydraulic steering for automobiles and self-propelled machines features at least two steering wheels and has a steering wheel linked to a hydraulic distributor, characterized in that it has at least two hydraulic modules. Each module includes a module body including an assembly having a double piston integral in translation with a rack. The piston is housed with a sliding aptitude in a cylinder body in which it delimits two opposite chambers. Each module also includes a gear meshing with the rack. Each of these modules is linked, on the one hand, through the intermediary of its pivoting element to one of the steering wheels and, on the other hand, through the intermediary of its fixed organ, to the vehicle chassis, and in that said distributor is connected to one of the chambers delimited by the rack piston of each module, the second of the chambers communicating with each other.

Abstract: A bracket assembly for an audio system that includes a mounting bracket slidably connected to a sub-assembly for attaching first and second loudspeaker enclosures of an audio loudspeaker system. The sub-assembly includes a plurality of vibration isolators disposed between a lower mounting bracket and an upper mounting bracket. The mounting bracket is attached to a first loudspeaker enclosure and the upper mounting bracket is attached to a second enclosure. First and second arms on the mounting bracket are inserted into first and second tracks on the lower mounting bracket to slidably attach the sub-assembly to the mounting bracket.

Abstract: A muffler for an exhaust system of an internal combustion engine comprises: a casing having an inner space, an inlet pipe for sound to enter the muffler, an outlet pipe for sound to exit the muffler, and a separation wall arranged to extend from the inlet pipe to the outlet pipe and being embodied in a manner such as to define first and second acoustical ducts extending through the casing to allow sound propagating along the first acoustical duct to enter the inner space of the casing and to thereafter exit the inner space of the casing again, and to allow sound propagating along the second acoustical duct to acoustically bypass the inner space of the casing.

Abstract: An acoustic protective cover assembly comprising a porous membrane and an acoustic gasket is disclosed. The porous membrane is bonded to the acoustic gasket at a peripheral region, the membrane is left unhanded at a central region. The acoustic gasket comprises a composite of a porous polytetrafluoroethylene (PTFE) polymer matrix of polymeric nodes interconnected by fibrils, resilient expandable microspheres embedded within the matrix.

Abstract: A movable type ladder device for a work vehicle includes a ladder main body, a drive mechanism, and an up-and-down lock mechanism. The ladder main body has first and second end portions in a longitudinal direction thereof with the first end portion being rotatably supported with respect to the vehicle body. The drive mechanism is configured to move the ladder main body between a boarding posture and a retracted posture by rotating the ladder main body at an angle of 90 degrees. The up-and-down lock mechanism is configured to restrict the ladder main body set in the retracted posture from moving in an up-and-down direction. The rotational center axis is disposed perpendicularly to the longitudinal direction of the ladder main body set in the boarding posture in a front view, and perpendicularly to the longitudinal direction of the ladder main body set in the retracted posture in a plan view.

Abstract: A fall restraint device for attachment to an extendable or telescoping ladder platform has a safety rope for attaching a slidable lanyard fixed to a climber. The length of the rope lies on tops of the exposed rungs of the ladder and extends with the ladder as the ladder is deployed and wherein upon retraction of the ladder the rope follows the ladder and toward the base or turntable of the ladder. The lanyard for attachment to a climber of the ladder and for slidable attachment to the safety rope has a locking element at the slidable attachment to the rope. The locking element slides freely unloaded, but locks the lanyard to the safety rope when under load of a falling or slipping climber.

Abstract: Energy loss in a dip lubrication system is reduced by reducing the immersion depth of the gear within a pool of oil. This can be accomplished by increasing the pressure within the dip lubrication system which effectively reduces the flow rate of the oil so that the oil remains separated from the oil pool for a longer period of time thereby reducing the oil level and the immersion depth of the gear within the oil pool. Alternately, this can be accomplished by substituting a higher density gas for air which has the same effect. In a third embodiment the immersed gear includes wind vanes that direct air against the oil pool creating a trough which effectively reduces the immersion depth of the gear within the oil pool.

Abstract: A device for ensuring the supply of oil to the secondary circuit of a transmission of a hybrid drive-train of a motor vehicle, having an electrically operated auxiliary oil pump, which comprises a bypass valve that is connected between the outlet of the auxiliary oil pump and the secondary circuit of the hybrid circuit of the transmission, such that the valve opens at a predetermined opening pressure, closes at a predetermined closing pressure which is lower than the minimum system pressure, and, at a predetermined pressure between the opening and closing pressures, the valve permits flow a predetermined volume flow into the secondary circuit.

Abstract: A first apparatus for supporting a wheel of a vehicle includes a support structure and a support movably mounted on the support structure. At least one locating member and clamping mechanism are mounted to the support structure and the support. The clamping mechanism engages the locating member so that the support is held in a predetermined position relative to the support structure. A second apparatus for supporting a wheel of a vehicle includes a bearing surface and a support movably mounted on the bearing surface. A first locating member is positioned underneath the bearing surface, and a shaft is mounted to the underside of the support and extends through the bearing surface and the locating member. When an actuator is retracted, the first locating member bears against the bearing surface so that the support is held in a predetermined position relative to the bearing surface.

Abstract: An elevator has a car, arranged to be moved along at least one guide rail in an elevator guide way, the car having a brake for braking the car movement by gripping the guide rail, the brake having a gripping device configured to grip the guide rail and exert a friction force thereon, and an adjusting device configured to adjust the gripping device with respect to its friction force exerted on the guide rails in case of braking. The adjusting device is configured to adjust the gripping device depending on the car position in the elevator guide way. With the above construction, emergency braking is allowed, particularly in higher and high rise elevators with a stopping distance which is mostly unaffected by the position of the elevator car in the guide way.

Abstract: The invention relates to a disk brake, in particular for utility vehicles, having a brake application shaft and having an adjusting device for wear-dependent adjustment, wherein a rotational axis of the brake application shaft is perpendicular to a rotational axis of the adjusting device and a pin serves to couple the brake application shaft to the adjusting device. A longitudinal axis of the pin encloses an acute angle with the rotational axis of the brake application shaft. The invention also relates to an adjusting device for a disk brake, in particular for utility vehicles, having an adjusting element in the form of an adjusting nut or an adjusting screw, and having a slipping clutch for limiting the torque which can be transmitted to the adjusting element. The slipping clutch has a friction element which is rotationally coupled to the adjusting element in both rotational directions.

Abstract: The invention relates to an electromagnetic brake and a method for making an electomagnetic brake. The electromagnetic brake comprises a frame part, an armature part movably mounted on the frame part and having a magnetic core, one or more spring elements for activating the brake by moving the said armature part forwards, an electromagnet fitted to the frame part and arranged to release the brake by pulling the said armature part backwards by resisting the said one or more spring elements, and a planar, elastically bendable damping plate fitted to be bent when the armature part is moving and, while being bent, to produce a damping force resisting the bending to dampen brake noise.

Abstract: A system and method are provided for mounting, removing and retaining brake pads in disc brakes, such as air-operated disc brakes utilized on commercial vehicles, in a manner which does not require the use of separate brake pad retaining devices while providing positive retention of the brake pad. A preferred embodiment includes a brake caliper mount having brake pad abutment surfaces having radially-oriented and lateral grooves which permit a brake pad with corresponding projections on is lateral sides to be inserted through an opening of the brake caliper into the radially-oriented grooves until the backing plate projections are aligned with the lateral groove, and advancing the brake actuator behind the brake pad to place the brake pad in an operating position in which the actuator prevents the brake pad from realigning with the radially-oriented grooves until the actuator is retracted to permit brake pad extraction.

Abstract: The invention relates to a brake disc for a land vehicle, particularly a commercial vehicle, having an axis of rotation, a friction ring, a disc pot and a disc flange for flange-mounting the same to the wheel hub of a vehicle, wherein the disc flange includes a flange facing. According to the invention, it is provided that the flange facing encloses an acute angle with a normal of the axis of rotation in the longitudinal sectional plane that contains the axis of rotation, when the flange facing is in the non-flange-mounted state thereof.