Abstract: A compressor may include first and second scrolls, a hub plate and a valve. The first scroll may include an end plate defining first and second sides, a primary discharge passage extending therethrough, and a secondary discharge passage extending therethrough and located radially outward from the primary discharge passage. The hub plate may be mounted to the first scroll and may include first and second opposite sides and a hub discharge passage in fluid communication with the primary discharge passage. The first side of the hub plate may face the second side of the end plate and may include a valve guide extending axially toward the end plate adjacent the hub discharge passage. The valve member may be secured on the valve guide for axial movement between open and closed positions to respectively allow and restrict fluid communication between the secondary discharge passage and the hub discharge passage.

Abstract: A rough vacuum pump system includes a primary vacuum pump and a secondary vacuum pump. The primary vacuum pump is an oil-free positive displacement pump, and has an inlet opening, an outlet opening, a compression stage between the inlet and outlet openings, and an intermediate gas passageway that connects to a gas flow path running through the compression stage. The secondary vacuum pump is connected to the intermediate gas passageway of the primary vacuum pump. The compression ratio of the primary and secondary vacuum pumps operating in combination is greater than that of the compression ratio of either of the primary and secondary vacuum pumps operating individually. A vacuum apparatus includes a tracer gas detector connected to an inlet of the primary vacuum pump.

Abstract: A compressor includes a shell, a first temperature sensor, a second temperature sensor, and a control module. The shell includes a motor, a compression mechanism and a lubricant sump. The first temperature sensor is at least partially disposed within the shell and configured to measure a first temperature of a lubricant at a first position. The second temperature sensor is at least partially disposed within the shell and configured to measure a second temperature of the lubricant at a second position that is vertically higher than the first position. The control module is in communication with the first and second temperature sensors and configured to determine a first difference between the first temperature and the second temperature. The control module is configured to determine whether a liquid level of the lubricant in the lubricant sump is below a predetermined level based on the first difference.

Abstract: The invention relates to a motor vehicle vacuum pump having a pump housing surface, on which a noise absorption cap is mounted, said cap defining a noise damping volume.

Abstract: An improved impeller and a casing for a centrifugal pump are disclosed. The impeller comprises vanes which sweep an arc around an impeller axis to provide a smooth path past the impeller and through the pump. The casing is constructed to allow maximum flow rate at the eye of the impeller then shrink the flow channel to reduce internal recirculation promote efficiency, further limiting the effect of damaging forces. The impeller is suited for use in pumps in which a high head is required and in which only low shear forces must be applied to the fluid moving through the pump.

Abstract: A multistage centrifugal pump includes a foot part (1) and a head part (7), between which several pump stages are arranged. Each of the pump stages includes an impeller (4) and a housing (5) surrounding the impeller (4). The housings (5) are arranged over one another. The housings (5) together with an outer casing (9) form an annular channel (8). The housings (5) together with an outer casing (9) are clamped via clamping bolts (11) which are fastened on the head part (7) and the foot part (1). The clamping bolts (11) are arranged within the annular channel (8).

Abstract: A radiator fan of a motor vehicle, in particular a main fan, contains a fan wheel which has a hub and an electric-motor rotor which is attached thereto in a form-locking manner. At least one connecting dome is formed integrally on the rotor, which connecting dome protrudes through a corresponding cutout of the hub and is deformed on the free end side in a rivet-shaped manner in order to produce the form-locking connection.

Abstract: A turbocharger for an internal combustion engine has a housing (12) in which elements (18, 44) are arranged. An optical duct (24) is formed in the housing (12) and is assigned to at least one of the elements (18). The optical duct (24) is assigned an infrared detector (28) that is designed to detect infrared radiation (30) from the at least one element (18) through the optical duct (24) to determine a temperature (T) of the at least one element (18).

Abstract: An arrangement for compensating the axial thrust of a fluid-flow machine is provided. A load-relieving element is non-rotatably connected to a shaft. A flow-restrict gap is formed by the load-relieving element and a counter-element secured to a housing of the fluid-flow machine. The counter-element is provided with a device for maintaining the distance between the load-relieving element and the counter-element. The device includes at least one force-generating element that generates a force that acts in opposition to the axial thrust in order to avoid component contact.

Abstract: An assembly for a gas turbine engine includes a seal and a flow diverter. The flow diverter is disposed adjacent the seal to direct a secondary gas flow that passes across the seal away from a rotor cavity such that the secondary gas flow travels back toward a main gas flow path of the gas turbine engine.

Abstract: A rotary assembly includes a fan disk including a tooth with an upstream face; a platform mounted on the tooth; and a shroud mounted at the upstream end of the disk. The platform, at its upstream end, includes a step with a radial portion that is extended by an axial portion to form a substantially L-shaped longitudinal section. The axial portion radially retains the platform against the tooth. The radial portion extends along the upstream face of the tooth and includes an opening for having a fastener element passing axially therethrough to mount the shroud on the disk. A face of the shroud includes an element that projects and passes through the opening and comes into contact with the upstream face. The element extends from the face of the shroud over a length that is longer than a thickness of the radial portion of the step of the platform.

Abstract: A compressor housing includes an intake port, a scroll, and a shroud. The shroud includes a shroud surface facing the impeller, a sliding member in an annular shape, and a sliding-member fixing portion in an annular shape. An inner circumferential surface of the sliding member defines the shroud surface. The sliding-member fixing portion includes contact portions that are configured to such that an inner circumferential surface of the sliding-member fixing portion and an outer circumferential surface of the sliding member at least partially come into contact with each other. The sliding member is fastened to the sliding-member fixing portion at the contact portions by the fastening members. The sliding member is fastened by the fastening members configured to extend through the sliding-member fixing portion. The fastening members are fastened from an outer circumferential surface of the sliding-member fixing portion to the sliding member.

Abstract: A nozzle for a fan assembly includes an air inlet, an air outlet, an interior passage for conveying air from the air inlet to the air outlet, an annular inner wall, and an outer wall extending about the inner wall. The interior passage is located between the inner wall and the outer wall. The inner wall at least partially defines a bore through which air from outside the nozzle is drawn by air emitted from the air outlet. A flow control port is located downstream from the air outlet. A flow control chamber is provided for conveying air to the flow control port. A control mechanism selectively inhibits a flow of air through the flow control port to deflect an air flow emitted from the air outlet.

Abstract: A mounting system for a gas turbine engine includes a compressor case portion, an inlet frame, an outlet frame, and a mounting structure. The compressor case portion houses rotatable compressor blades. The inlet frame connects to an inlet end of the compressor case. The outlet frame connects to an outlet end of the compressor case portion at an end opposite the compressor case inlet end. An axially fore mounting structure of the mounting structure connects to the inlet frame. An axially aft mounting structure of the mounting structure connects to the outlet frame. A bridging structure of the mounting structure is offset from the compressor case and connects the fore and aft mounting structures, thereby bridging engine loads across the inlet and outlet frames to reduce load induced distortion of the compressor case portion.

Abstract: A flow rectifier (1) for an axial fan (2), having a base body (3) which has rings (4a, 4b, 4c, 4d, 4e) delimited radially inside the outside by cylindrical surfaces (5, 6). Air guide vanes (7) which are distributed in the circumferential direction about a longitudinal axis (X-X) arranged in a generally radial manner and extend between the cylindrical surfaces (5, 6). The air guide vanes (7), in the circumferential direction, extend with a curvature (R1) relative to the axial direction (X-X) between an inflow-side vane edge (7a) and an outflow-side vane edge (7b). In order to minimize the divergence of airflow from the flow rectifier (1), two or more rings (4a, 4b, 4c, 4d, 4e) having air guide vanes (7) are provided in the base body (3).

Abstract: Described is a fan assembly comprising a body comprising an air inlet, an air outlet, and means for generating an air flow through the body. The body has a lower body section and an upper body section capable of rotation relative to the lower body section. The fan assembly also comprises a nozzle for emitting the air flow, and a filter upstream from the air inlet, wherein the upper body section has a seat for supporting the filter such that the filter rotates relative to the lower body section when the upper body section is caused to rotate.

Abstract: The present invention relates to a fan with a cold air function which, through supply of liquid oxygen (LOX), has a strong cold air function and at the same time provides an air cleaning effect by supplying oxygen. A fan including a base part (10) equipped with a plurality of buttons (11), a main body part (20) installed on the top of the base part (10), a motor part (30), rotary blades (40) coupled to a motor shaft at the front of the motor part (30), and a protection net (50) installed to surround the rotor blades (40), the fan comprises: a mounting part (60) in which a liquid oxygen (LOX) charge canister (62) is removably mounted; an opening and closing controller (63) for controlling the output amount of an oxygen gas discharged from the charge canister (62) mounted in the mounting part (60); and a discharge pipe (64) which is connected to the opening and closing controller (63) and configured in such a manner that the discharged oxygen gas is diffused through the rotary blades (40) to the front.

Abstract: A sensor (S) is provided for determining the stroke of the piston rod (6) of a fluid cylinder, particularly a hydraulic or pneumatic cylinder. The sensor includes a lighting unit for illuminating a code applied on the surface of the piston rod and differing from said surface by color, a first camera unit with a first lens system for recording a first image of the illuminated code in a first scanning window, an evaluation unit for evaluating output signals of the first camera unit, and an interface for issuing the evaluated output signals as information regarding the position of the piston rod. Additionally, a second redundant camera unit is provided with a second lens system, which serves for recording a second image of the illuminated code in a second scanning window.

Abstract: A fluid transfer apparatus includes a spiral pipe that is formed by an elastic tube wound in a spiral manner, and a fluid to be transferred flows in the spiral pipe. The fluid transfer apparatus further includes a speaker that is configured to generate a pressure wave in a working fluid in the tube that is a medium, and the pressure wave causes a change of the cross-sectional area of a flow channel of the tube.

Abstract: The present invention relates to a process for preparing ultra-high molecular weight polyalphaolefin. The process consists of polymerizing alphaolefin monomers using the catalyst system consisting of supported Ziegler-Natta catalyst without internal donor in presence of co-catalyst based on alkyl aluminums. The resulting ultra-high molecular weight polyalphaolefins having intrinsic viscosity ?10 dL/g are used as drag reducing polymers for increasing throughput in the pipelines by reducing frictional resistance in turbulent flow.

Abstract: A connection arrangement having at least two bodies of components to be connected to each other and a constraining group for constraining two bodies to each other in a removable manner is disclosed. When the two bodies are in the connection configuration to each other, a recess of one of them defines with a corresponding recess of the other one a respective coupling seat with the constraining group, having at least one pair of locking clamps insertable into a respective coupling seat. When the two bodies are in the connection configuration to each other, they are spaced from each other so that their faces do not have portions in mutual contact with each other.

Abstract: A fixation device for securing a linear element to a workpiece includes a contact component and a fixation component. The contact component typically includes (i) a first contact surface for application to a workpiece and (ii) a first opening for receiving a linear element. The fixation component typically secures a portion of the linear element on a side of the first contact component opposite the first contact surface. The fixation component engages the contact component to prevent passage of the linear element's secured portion through the workpiece when a tension is applied to the linear element in a direction opposite the contact surface.

Abstract: A worktop (1) for pieces of furniture includes two slabs (3, 4) made of stone, arranged so that they are adjacent to each other at the level of corresponding head surfaces (5, 6) in order to define a work surface (2) exposed to the outside. A joining arrangement is suited to stably connect the slabs (3, 4) and includes a first bonding substance (8) interposed between the head surfaces (5, 6) and recesses (9) obtained on the head surfaces (5, 6) of each slab (3, 4), mutually facing each other and configured in such a way as to define corresponding housings completely delimited in the direction of the thickness of the slabs (3, 4), the first bonding substance (8) being spread mainly in the housings.

Abstract: A device which can be fixed to the edge of a panel, for example a sound-absorbing panel formed by heat-bonded synthetic fibers, is disclosed. The device includes a body with a longitudinal through-hole and two walls which define a cavity for enclosing the edge of the panel. The through-hole communicates with the cavity. The through-hole is configured to guide a threaded element (screw or the like) towards the cavity so that the threaded element engages at least with the edge of the panel so that it expands towards the walls of the cavity and is firmly retained by them.

Abstract: A hardware system for assembly to form an item, such as an item of furniture. The system includes a tension adjustment device, such as a turnbuckle, which may be threadably engaged with two rods, inserted into two rod inserts located on each of the turnbuckle's two opposite sides. The rods may pass through a series of alternating base material components and spacers therebewteen to form an item's body, the turnbuckle being located, for example, in or near the middle of the two series. The ends of the rods opposite the turnbuckle may be threaded into inserts fixed in an end piece of base material of their respective series. The turnbuckle may be twisted or otherwise adjusted to secure or compress the system. A final assembly may have one or more such series and may give the illusion of a solid bar of hardware being passed through the base material.

Abstract: A joint structure (1) for a composite member made from a composite material. The joint structure includes a plate for increasing thickness (40a, 40b) adhered to at least one side of the composite member (10). The composite member (10) and a counterpart member (20) are fastened together by inserting and fixing a fastener member (30) into a through-hole (24, 26) formed through the composite member (10), the plate for increasing thickness (40a, 40b), and the counterpart member (20) to be joined to the composite member.

Abstract: A connector for removably securing a first member having a hollow cavity with a second member such that a portion of the second member is removably fixed within the hollow cavity of the first member. The connector is configured to be inserted into the hollow cavity and has an outer bearing surface configured to rest in abutting engagement with the corresponding portion of the inner wall of the cavity when the connector is inserted into the cavity. The connector also includes an inner bearing surface that corresponds with a portion of an outer wall or surface of a second member and is additionally configured to accommodate the use of a force applicator to press the second member against the inner bearing surface and to press the outer bearing surface against the first member's inner wall to removably fix the second member and connector within the cavity.

Abstract: A modular frame for seats or furnishing elements provided with a supporting surface includes a plurality of section bars that are adapted to be rigidly constrained to one another so as to define the frame of the supporting surface. The cross section of the section bars is at least partially hollow and substantially triangular and is provided with an opening configured to allow a conveniently shaped terminal part of fixing elements to be longitudinally inserted in the section bar in order to join at least two section bars.

Abstract: Fasteners and related systems according to the invention include a collet body having a first part of a two part anti-rotation arrangement and a cylinder body having a second part of the two part anti-rotation arrangement wherein the collet body and the cylinder body are matably axially translatable with respect to each other, and have the same or similar outer diameter in some embodiments or not in others. A threaded member rotationally engages the collet body and compressively contacts the cylinder body during operation of the fastener to creating a clamping effect. Rotational interference between the first and second parts of the anti-rotation arrangement preferably occurs at sectional face portions of at least the collet body. Resistance to induced rotation of the cylinder body relative to a work piece rotation of the threaded member is preferably provided by a tool engaging a tool interface present on the cylinder body.

Abstract: A bolt used for securing a back rest cushion on a chair in which the backrest support for the cushion defines an oval aperture. The bolt comprises a head that has a front and a rear side, the front side of the head defines an adjusting point. And, a shank attached to the rear side of the head, the shank has a front, a rear, a top, a bottom, a left and a right side, the top and bottom sides of the shank define an oval groove and the top and bottom sides of the shank are oval shaped, the left and right sides of the front of the shank are flat, and the top, bottom, left and right sides of the shank taper from the front side of the shank toward the rear side of the shank.

Abstract: A lockbolt for installation into apertured workpiece members, comprising a pin having a head and a tail end provided with locking grooves and a single pull groove, wherein an installation tool having a collet with a corresponding shape to the pull groove is used to apply an increasing pulling force to the pin tail, thereby to push the collet towards the workpiece, and as the force applied by the hydraulic piston further increases, causing the collar to be swaged into the lock grooves, and halting the force applied by the tool either at a predetermined maximum value or when the pin tail breaks at a breaker groove formed by the single pull groove.

Abstract: An assembly of a vehicle seat is provided. The assembly includes a component which includes an opening which is delimited by an opening edge and a fastening device which is to be secured on the component and includes a clamping part and a screw part which is to be connected in a screwing manner to the clamping part. The clamping part includes at least one clamping portion, is insertable into the opening in a direction of insertion and is connectable to the component in a clamping manner as a result of screw-connecting the screw part to the clamping part.

Abstract: In a method for connecting a press-in bolt with a metal sheet, the metal sheet is positioned upon a cover element of a joining tool. The press-in bolt is forced by the joining tool in a pilot hole of the metal sheet as the metal sheet is supported by the cover element in its capacity as a die, until a head portion of the press-in bolt rests upon one side of the metal sheet and the cover element is pressed upon a shaft portion of the press-in bolt and radially deformed to rest upon another opposite side of the metal sheet.

Abstract: A fastening device including a fastener having a head portion and an elongated threaded body portion extending axially from the head portion. The threaded body portion includes opposing flat sections. A lock washer has a lower surface with an array of radially extending engagement teeth. The lock washer also defines an axial aperture for receiving the fastener. The axial aperture has two flat inner surfaces for cooperating with the two flat sections of the threaded body portion to prevent relative rotation of the washer and threaded body portion. A threaded lock nut mates with the threaded body portion. The lock nut has an upper surface with at least one cantilevered pawl members for ratcheted engagement with the array of radially extending engagement teeth of the lock washer.

Abstract: A pivot pin assembly for a tree shaker pivotally attaches the clamping arm to the stationary arm. Each end of the cylindrical pivot pin extends outside of a cylindrical bore of the clamping arm. A longitudinal load member extends through an aperture in the stationary arm and into an aperture in the cylindrical pivot pin. An axial load may be applied to the longitudinal load member which compresses a plate of the stationary arm against the cylindrical pivot pin, but without compressing the stationary arm against the clamping arm. This configuration allows substantial torque to be applied to the longitudinal load member, which reduces play between the stationary arm and the clamping arm without inhibiting the free rotation of the clamping arm. Application of this torque eliminates radial and vibratory movement in the shaker head, which otherwise cause damage to the components of the shaker head.

Abstract: On a facing surface (12a) of a pad (12) that faces a rotation shaft, an oil supply unit (24) is provided in an end region downstream of the rotation shaft in the rotation direction, and the oil supply unit (24) is formed along part of an isopleth of the pressure distribution on the facing surface (12a) generated by a lubricant being caught between the rotation shaft and the facing surface (12a), said part of the isopleth being downstream, in the rotation direction, of the pressure maximum of the pressure distribution.

Abstract: A wheel bearing assembly includes a wheel hub which is mounted on an axle element by at least one wheel bearing, and a temperature-measuring device, visible from outside the wheel bearing assembly, configured to measure and display the exceeding of a limit temperature in the wheel bearing, wherein the temperature-measuring device comprises at least two separate temperature-measuring elements, each of which is connected to the wheel bearing in a heat-conducting manner along a heat-conducting path and undergoes a visually identifiable change at a predetermined trigger temperature. The at least two temperature-measuring elements are disposed in such a way that, when the wheel bearing heats up, the elements heat up at different rates, and/or the temperature-measuring elements have different trigger temperatures.

Abstract: A hybrid shaft bearing, a wind generator comprising the hybrid shaft bearing, a use of the hybrid shaft bearing, and a method of operating the hybrid shaft bearing is provided. The hybrid shaft bearing comprises a hydrodynamic friction bearing and a rolling bearing. Both the hydrodynamic friction and rolling bearings cooperate with a support structure and rotatably support a shaft. The hydrodynamic friction bearing is a passive hydrodynamic bearing.

Abstract: A squeeze film damper includes a static member and a whirling member positioned adjacent to the static member. A gap is formed between the static member and the whirling member. A pressurized oil reservoir is formed in the gap between the static member and the whirling member. A first low pressure oil reservoir is formed in a first cavity in the whirling member, wherein the first low pressure oil reservoir is positioned on a first end of the pressurized oil reservoir. A second low pressure oil reservoir is formed in a second cavity in the whirling member, wherein the second low pressure oil reservoir is positioned on a second end of the pressurized oil reservoir. A first primary seal is positioned between the first end of the pressurized oil reservoir and the first low pressure oil reservoir, and a second primary seal is positioned between the second end of the pressurized oil reservoir and the second low pressure oil reservoir.

Abstract: A self-lubricating slide module is provided. The slide module comprises a rail and a slider. The slider includes a metal member and a plastic member, wherein the metal member includes at least one engaging structure. The plastic member binds to the metal member by injection molding, so as to cover at least a portion of the metal member, and be embedded into the engaging structure to firmly engage to each other.

Abstract: A bearing component composed of steel which contains carbon not less than 0.95 mass % and not more than 1.1 mass %, silicon less than 0.3 mass %, manganese less than 0.5 mass %, sulfur less than 0.008 mass %, and chromium not less than 1.4 mass % and less than 1.6 mass % and is composed of remainder iron and an impurity and having a carbonitrided layer formed at a surface portion is provided. An average concentration of nitrogen in the surface portion is not lower than 0.3 mass % and not higher than 0.6 mass % and variation in nitrogen concentration is not higher than 0.1 mass %. An amount of retained austenite is not greater than 8 volume %. An area ratio of a precipitate in the inside where no carbonitrided layer is formed is not lower than 11%.

Abstract: An inner ring includes: a pair of shoulder outer peripheral surfaces on first and second axial sides of a raceway surface of the inner ring in contact with balls; seal grooves disposed in first and second axial ends of the inner ring and defining labyrinth clearances with lips; and edges disposed on the first and second axial sides. Each of the edges is configured to cause grease flowing along an associated one of the shoulder outer peripheral surfaces to leave the shoulder outer peripheral surface in the direction of an extension thereof. Each of the lips includes a lip oblique surface functioning as a guide surface to guide the grease that has left the edge not to a radially inner region of the bearing but to a radially outer region of the bearing.

Abstract: A rolling bearing includes an outer race, an inner race, rolling elements mounted between the outer race and the inner race, and a seal ring formed with an oil passage hole and covering at least one of the axial end openings of the bearing space of the bearing. A filter is mounted to the seal ring so as to cover the oil passage hole of the seal ring, and is configured to catch foreign matter contained in lubricant oil, and a magnetic member is mounted axially inwardly of, and adjacent to, the filter, and is configured to attract foreign matter to the magnetic member due to the magnetic force of the magnetic member.

Abstract: The present invention relates to hydrodynamic bearings, X-ray tubes, X-ray systems, and a method of manufacturing a hydrodynamic bearing for an X-ray tube. The rotor of a hydrodynamic bearing is supported, in steady-state operation, by the pressure of lubricant which is pumped through grooves in the rotor. When the rotor is speeding up or slowing down, the pumping force will not be sufficient to lift the rotor clear of a stationary bushing, and damage, caused by direct contact of the metal surfaces of the bearing, can occur. Providing special coatings on the bearing surfaces can ameliorate this effect.

Abstract: A tolerance ring is adapted to be deployed between inner and outer components. The tolerance ring includes a generally cylindrical body. The sidewall can include an undeformed portion. The sidewall can further include a plurality of wave structures. The wave structures can protrude radially from the undeformed portion. Some or all wave structures can protrude inwardly or can protrude outwardly. Furthermore, the tolerance ring when placed in an assembly having an inner component and an outer component can have a first torque break-point T1 in a first rotational direction. A torque break point for an assembly comprising an inner component, an outer component, and a tolerance ring is the torque at which slippage occurs.

Abstract: A ball cam actuated dog clutch assembly for a motor vehicle transmission includes a clutch sleeve having a plurality of gear teeth positioned at a first end and multiple ball bearings disposed at a second end. A clutch hub having multiple helical grooves is created in an outer facing wall. Each of the helical grooves receives a portion of one of the ball bearings. An actuator member acts to rotate the clutch hub. Rotation of the clutch hub causes axial translation of the clutch sleeve in a selected one of a first direction or an opposite second direction by translation of the ball bearings within the helical grooves.

Abstract: A friction plate is formed by circularly fixing a plurality of friction material segments to a substantially annular core plate. A through groove that penetrates from an inside diameter side to an outside diameter side of the core plate is formed between the friction material segments, and each of the friction material segments has a circumferential groove that opens to the through groove, extends in a circumferential direction, and terminates in the friction material segment.

Abstract: A limiting mechanism or assembly for a self-adjusting friction clutch to prevent the overadjustment of cam rings caused by a sudden impact to the vehicle. The limiting mechanism connects the cover to the adjustment mechanism using straps that link fixation members together. In one embodiment, a first fixation member comprises a bolt that attaches a bushing, which is placed through a corresponding hole in the cover of the clutch, relative to the pressure plate and a second fixation member comprises a bolt that engages a corresponding hole on the adjusting ring.

Abstract: A torque transmission module (M) intended to be part of a motor vehicle transmission (1), comprising: a cover (10), a double wet clutch mechanism (11) movable rotationally around an axis (X), and a clutch cover (12) having an oil distribution device intended to supply oil to the double wet clutch, the cover (10) and the clutch cover (12) being assembled so as to form a casing defining a receptacle in which the double wet clutch mechanism is partly received, the casing being able to be received entirely or in part in a clutch housing (5) of the transmission.

Abstract: A race for a mechanical clutch assembly may be formed from multiple race layers that assembled from pluralities of stamped arcuate segments. First and second race layers may have the same shape when their arcuate segments are assembled are assembled. The arcuate segments of the first race layer may be identical to each other, and the arcuate segments of the second race layer may be identical to each other, but the first layer arcuate segments are not identical to the second layer arcuate segments. Interlocking joints between the first layer arcuate segments are not aligned with interlocking joints between the second layer arcuate segments when the race layers are joined together and aligned for use in the mechanical clutch assembly.