Abstract: Disclosed is an impeller for a turbomachine. The impeller comprises a hub, full blades equidistantly disposed on the hub in a circumferential direction, and a splitter blade disposed between each adjacent two of the full blades. The splitter blade is shaped in such a way that a spanwise distribution of a pitchwise position of a leading edge of the splitter blade is determined according to a spanwise and pitchwise non-uniformity distribution of fluid velocity of a fluid flowing into the splitter blade, whereby a non-dimensional circumferential position of a leading edge of the splitter blade varies in a spanwise direction.

Abstract: The invention concerns a hydrokinetic coupling apparatus comprising a turbine wheel capable of being interlocked with a driven shaft and housed in an impulse starter wheel with which it can co-operate for hydrokinetic transmission of a torque to said driven shaft, from an input shaft capable of being interlocked with said impulse starter wheel, the turbine wheel and/or the impulse starter wheel being constituted in the form of a wheel (1) including an external doughnut-shaped part (3) fixed on a hub (2) and blades (4) integral with said external doughnut-shaped part (3) and optionally with an internal doughnut-shaped part (8). Said blade wheel (1) is at least partially moulded in one or several parts in synthetic material, in particular a thermoplastic material, a thermosetting material or a synthetic material alloy, said materials being reinforced with resistant fibres.

Abstract: A vane wheel, in particular an impeller wheel or turbine wheel, for a hydrodynamic coupling device includes a shell which is rotatable about an axis of rotation and a plurality of vanes arranged at the shell in circumferential succession. Each of the plural vanes has at least one connection projection inserted into a connection recess provided in the shell. Further, the vanes each have a fastening projection arranged so that the vanes are fixedly connected with the shell in the area of this fastening projections.

Abstract: A blade wheel (10) for a motor vehicle hydrokinetic transmission apparatus having globally a half-torus shape, and comprising axially and successively arranged, a continuous front shell (12) globally shaped like a half-torus with large external diameter, and a continuous rear shell (16), coaxial with the front shell (12), globally shaped like a half-torus with a small external diameter, between which is arranged as assembly of blades (14) whereof the blades (26) extend radially, circumferentially and axially between a concave wall (20) of the front shell (12) and an opposite convex wall (40) of the rear shell (16), the assembly of blades (14), and the front shell (12) are separately made, then assembled to constitute a blade wheel (10), the blade wheel (10) blades (26) being mutually connected at least partly, for example with rings (28, 30), and produced by molding.

Abstract: A stator wheel for a hydrodynamic torque converter comprises a stator wheel hub arrangement and a plurality of stator wheel blades arranged successively in the circumferential direction of the stator wheel hub arrangement. Each stator wheel blade has a radial inner flow-around profile area and a radial outer flow-around profile area such that a flow-around profile in the radial outer flow-around profile area differs from a flow-around profile in the radial inner flow-around profile area.

Abstract: A torque converter is provided with a stator assembly having a nonrotatable body portion and a plurality of blades pivotally attached to the body portion. The plurality of blades are pivotable between a first position for providing torque multiplication and a second position out of the fluid flow.

Abstract: A driving connection is provided for torque transfer in the drive line of a motor vehicle for releasable connection of a crankshaft with a pump wheel of a coaxially mounted hydrodynamic torque converter in which the pump wheel is mounted so that it is rotatably supported integrally with the housing by a radial bearing.

Abstract: Stator structure is provided which is capable of suppressing an increase in fluid sound while maintaining high driving force transmission efficiency. The stator structure is disposed between the turbine runner and pump impeller of a torque converter and is provided with a plurality of circumferential vane portions for increasing torque which is input to the automatic transmission by employing reaction force produced when a flow of oil within the torque converter is abutted in a stall state. Rib portions for rectifying a flow of abutted oil are formed on the exterior surface of the vane portion.

Abstract: The invention relates to a boss formed on a front cover. The boss is formed by deforming a portion of a front cover material, at a central portion thereof, such that the boss is formed unitarily with the front cover. The boss is further deformed to form a central indentation on an end surface thereof. Further, the cylindrical sides of the boss are machined to form an alignment surface.

Abstract: An impeller shell 40a of a torque converter includes a main portion 41, a connection portion 42 and a stepped portion 43. The main portion 41 has a curved inner peripheral surface 41a carrying impeller blades, and is opposed to a turbine 5. The connection portion 42 has a cylindrical form larger in diameter than an outer periphery of the inner peripheral surface 41a, and is fixed to a front cover 3. The stepped portion 43 couples an end of the main portion 41 near an engine to an end of the connection portion 42 near a transmission. A corner portion formed of the inner peripheral surface 41a and a surface 43a near the engine has a radius set to 4 mm or less by preliminary forming by a press and subsequent finish forming by a press.

Abstract: A torque converter for an automatic transmission includes a turbine having the vanes thereof retained by tabs which fit into fluid-tight recesses formed in the housing of the turbine.

Abstract: A turbine wheel for a torque converter for an automatic transmission is formed of fiber-reinforced plastic resin molded about a powder metal hub having a disc formed with corrugations extending radially from a central axis, and slots extending through the thickness of the disc at angularly spaced intervals. The plastic resin of the turbine wheel fills the spaces between the tabs, extends through the slots formed through the disc, and forms a bond to the surfaces of the disc on which it is molded.

Abstract: A hydrokinetic torque converter which includes pump wheels and/or turbine wheels in particular of a Fottinger coupling, wherein all the required blades are stamped in the form of blade blanks, out of a round stamping blank in a single operating process, in such a manner that each blade blank remains connected, by means of a connecting web, to a ring-shaped area of the stamping blank which remains intact during the stamping. The blade blanks are then subjected to a shaping process, in which they are reshaped into the final three-dimensional shape of the blade, whereby the connection with the ring-shaped area remains intact, and, in a shaping process, the ring-shaped area is adapted to the contour of the housing that delimits the pump wheel or turbine wheel. A blade carrier is thereby produced which makes it possible to install all the blades, in their three-dimensional position with respect to the pump or turbine wheel, in a single process.

Abstract: A rotor disposed in a fluid retarder which includes a annular shell having a semicircular cross section and a plurality of blades, each blade being composed of a semicircular blade body and a rib bent from an arcuate edge of the blade body and fixed to an inside of the shell. The annular shell and the blades are composed of sheet metal. The blades are arranged at regular intervals in the circumferential direction of the shell and are welded into place. Because the annular shell and the blades are composed of sheet metal and are brazed together, the cost of manufacturing the rotor can be reduced without reducing its performance.

Abstract: A device for transmitting moment from a drive unit to a transmission using a hydrodynamic converter (2). The output shaft (1) of the drive unit and the hydrodynamic converter (2) are connected via a dog (5) and radially arranged components (6).

Abstract: A vaned element of a fluid coupler such as a torque converter includes vanes having a depression extending from a leading surface area to a trailing edge of the vane. The depression avoids multiple surface layer changes which introduce turbulence to flow of fluid past the vane. The depression also forms reinforcing ribs in the form of raised walls which dimensionally stabilize the mounting tabs for the vane. In addition the vane construction is light weight since it permits the use of simple cross-sectionally shaped vanes while improving the speed capability of the torque converter and the strength of the vaned elements. The blade construction permits automated assembly techniques for the vaned elements.

Abstract: A turbine wheel and a method of manufacturing the same for a hydrodynamic transformer, having an injection molded outer shell, and an integrally formed injection molded blade insert. The blade insert includes one of a hub element and an inner ring, and a plurality of blades. The injection molded blade insert is received within the injection molded outer shell.

Abstract: A turbine wheel of a torque converter for an automatic transmission is formed of fiber-reinforced plastic resin molded about a powder metal hub having a disc formed with tabs extending radially from a central flange, and openings extending through the thickness of the disc at angularly spaced intervals. The plastic resin of the turbine wheel fills the spaces between the tabs, extends through the holes formed through the disc, and forms a bond to the surface of the disc on which it is molded.

Abstract: An improved torque converter assembly utilizing or making use of the same or similar composite materials for each component of the torque converter to result in a high strength yet light weight torque converter assembly which may be easily recycled. Further, the torque converter includes a unique hub member having integral fingers radially extending therefrom for use in bonding hub member to a multi-bladed body such as a turbine, wherein the fingers are circumferentially spaced about an outer circumferential surface on the hub member such that the spacing between a common finger and adjacent fingers on each side thereof is not equal. Such a hub member distributes the loads and stresses onto different planes extending radially and transverse the longitudinal axis of the hub member.

Abstract: A torque converter having an impeller, turbine, and stator each formed of interconnecting upper and lower members, and a method for producing the same. The upper and lower members each include a number of spaced apart blades disposed about a central axis. Preferably, the corresponding upper and lower members are die cast with blades spaced apart at twice the distance desired in the completed assembly. When the upper and lower members are interconnected, their blades nest such that each member provides every other blade of the assembled component.

Abstract: In a bladed rotor of the kind in which each blade has curved side surfaces and having fingers fitted in depressions of a shell and an opening of a core, the depressions of the shell and the opening of the core for receiving therein corresponding fingers of the blades are shaped and arranged so as to have, with respect to an elevational view of the rotor, longitudinal axes which coincide with straight lines extending radially through the center of the rotor, respectively. A die assembly for forming such depressions or openings in the shell or core is also provided. In such a die assembly, first and second die sections are adjustable in relative circumferential position for thereby adjusting the relative circumferential position relationship between the first and second groups of depressions or openings in the shell or core to be produced.

Abstract: A fluid drive system in which a forged alloy steel impeller rotated by an input shaft at a constant speed drives a runner through a fluidic coupling, wherein selectively variable differential speed between the impeller and runner is produced by varying the amount of oil between the impeller and runner, wherein both the impeller and runner have radially extending vanes between them defining pockets between them with a bottom surface, the impeller is provided with reinforcing elements integral with the vanes, each reinforcing element spanning a pocket and being clear of the bottom surface. The runner can also be provided with such elements. In any case, the vanes and reinforcing elements are machined from a forged alloy steel billet, by a multi-axis Computer Numerical Controlled (CNC) milling machine under three-dimensional control with specialized tooling.

Abstract: A coreless torque converter includes a pump impeller provided with coreless blades each having a first leading edge directed forward; a turbine runner provided with coreless blades each having a second leading edge directed rearward; and a stator provided with coreless blades each having front and rear edges which face the second and first leading edges respectively. Each of the first and second leading edges extends generally straight connecting radially outward and inward terminal ends thereof.

Abstract: A torque converter turbine has a plastic bladed element molded around a sintered iron hub to form a substantially semi-toroidal structure. The hub provides ribs, apertures through the hub, and channels in which the plastic bladed element is disposed. Having the bladed element and hub thus engaged allows the bladed element and hub to sustain high torsional and axial loads at elevated temperatures without separating.

Abstract: A compact centrifugal fan that draws air in past the impeller hub, which encloses a motor and which spins about a central axis, and then urges the air through a bend in the fluid passageway. As the air passes through the annular inlet channel about the impeller hub, it flows in a forward axial direction. The air passes through the bend in the fluid passageway, as the air is being swept around the hub by the blades of the impeller. After the air passes through the bend, it has a reverse axial flow component, in addition to a circumferential flow component. Air having a forward axial flow component passes by the portion of an impeller blade that is closest to the impeller hub, and air having a reverse axial flow component passes the portion of a blade that is furthest from the impeller hub.

Abstract: A hydrodynamic retarder has a stationary element and a rotary element, each of which has a semi-toroidal cavity with a plurality of blade members disposed therein. The semi-toroidal cavities are presented in facing relation with the blade curvatures being oppositely directed. The blade members each have a fluid flow profile that accommodates constant acceleration of the fluid from entrance to exit.

Abstract: An impeller for a torque converter embodying the concepts of the present invention utilizes a substantially semi-toroidal shell. The shell has a radially inner periphery which defines an inlet portion and a radially outer periphery which defines an outlet portion. The shell is radially curved between the inlet portion and the outlet portion to define a concave annular recess. A plurality of full vanes and a plurality of splitter vanes are presented from the shell within the annular recess. The impeller vanes are disposed circumferentially about the concave recess at spaced intervals. Each vane has a leading head portion, an intermediate body portion and a trailing end portion. The leading head portions of both vanes are disposed in opposition to the inlet portion--the leading head portion of the full vanes being disposed in proximity to the inlet portion. The leading head portions of the splitter vanes are disposed in radially outwardly spaced relation to the inlet portion.

Abstract: A securing structure and method of a blade for torque converter for use mainly in industrial construction vehicles to provide its rigid and easy-to-manufacture construction. The structure includes plural circular blades which are secured to a concave surface of a shell with some space in the circumferential direction, a core ring which extends along the circumferential direction of the shell and is secured to concave peripheries of the blades. A tab fitting in slot of the shell is formed integrally on the convex periphery of the blade. A tab fitting in a slot of the core ring is formed integrally on the concave periphery of the blade. Ribs extending in the circumferential direction of the shell are only formed on both ends of the convex periphery and concave periphery of the blade. The convex periphery and the concave periphery are brazed to the shell and the core ring respectively.

Abstract: A method for assembling a torque converter impeller includes securing a pality of vanes to a core ring to maintain the vanes in a desired orientation. The core ring and vanes are positioned as a unit in an outer shell where the outer shell has a substantially smooth interior surface. The vanes and core ring unit is secured to the interior surface of the outer shell.

Abstract: A torque converter turbine has a plurality of blades integrally molded or cast with a shell or core to form a substantially semi-toroidal structure. Each blade has a rounded leading edge and trailing edge joined by hydrofoil blade surfaces. The flow space between adjacent blades provides the optimum distributed flow area from the leading edge to the trailing edge.

Abstract: A novel torque converter is disclosed which utilizes streamwise vorticity as well as a mean flow within the passageways of the machine to transfer energy efficiency over an extended utility ratio. This is accomplished with novel blade structures utilizing salient edges disposed in part along the mean flow path. Pairs of counter rotating vortices are produced by the impeller blades. The direction of rotation of these vortices is reversed by the turbine blades, efficiently transferring torque from the impeller to the turbine. At speed ratio zero the directions of rotation of the vortices leaving the turbine are again reversed by the stator to impart torque to the stator. This continues until the design speed ratio is achieved. Thereafter, the vortices are guided by the stator passages to the impeller. Below the design speed ratio, the impeller guides the vortices through it to the turbine where their flow is reversed. Above the design speed, the vortices from the stator are reversed by the impeller.

Abstract: An external shell of a pump wheel of a hydrodynamic flow unit manufactured from a sheet metal pressed part has, in its outlet-side region, an integral connecting sleeve with a cylindrical centering surface and a centered fastening surface extending thereform, and wherein the connecting sleeve is formed by upsettingly deforming, with the fastening surface being given a cylindrical shape and the centering surface being machined to its required diameter after upsettingly deforming.

Abstract: A scoop controlled fluid coupling has a toroidal working circuit W defined by vaned impeller and runner elements 11,12. Working liquid is supplied to the working circuit W from a rotating reservoir 9 by an adjustable scoop tube 15 having a scooping orifice 16, the radial position of which is to determine the degree of filling of the circuit W. To counteract unintentional changes in the filling due to thermal expansion of the liquid, the runner diameter is about 10% smaller than that of the impeller, and the runner has two sets of holes 54,55 which permit liquid to escape from the circuit.

Abstract: A hydraulic torque converter comprising an impeller integral with an input shaft and a rotor which is integral with an output shaft and opposed to said impeller so that a given clearance is formed therebetween, notches which are formed at one circumferential end of the inner periphery of vanes defining outlets of oil passages of the impeller, and notches at circumferential ends of the inner and outer peripheries of the rotor vanes defining inlets of oil passages of the rotor.

Abstract: A cooling assembly including a fan blade subassembly for receipt about a drive shaft and a protective shroud secured to the fan blade subassembly for rotation therewith.

Abstract: A cantilever shaft centrifugal pump including a volute casing and impeller within said casing and mounted on the end of the cantilever shaft. The volute chamber has an inlet coaxial with the axis of the cantilever shaft and an outlet extending tangentially of the wall of said volute casing. The impeller is of the shrouded type having spaced front and rear shrouds opening at the periphery of said shrouds with impeller vanes therebetween. The outer walls of the front and rear shrouds conform to arcs struck from the center of the bearings for the shaft, and the walls of the pumping chamber have clearance with the walls of the front and rear shrouds along arcs struck from the same center as the center of the walls of the front and rear shrouds. This accommodates radial excursions of the impeller and shaft upon large radial thrusts on the impeller and avoids catastrophic contact between the shrouds of the impeller and the stationary surfaces of the pumping chamber.

Abstract: A blade fastening structure for a torque converter or a fluid coupling forming a caulking part previously at an inner peripheral portion of an impeller, and fastening an inner peripheral portion of a blade to a shell by caulking the caulking part; in a torque converter or a fluid coupling forming the shell by welding an inner peripheral portion of a shell body having an annular groove of semi-circular section to a hub concentric with an output shaft, and forming the impeller by arranging a semi-elliptic blade between the shell and a core ring.

Abstract: A blade of an impeller for a hydrodynamic torque converter wherein the central flow thread at the point of the leading edge is displaced with respect to a central flow thread at a point of the trailing edge along a smaller wheel diameter as well as by an angle of rotation leading in a direction of rotation of the impeller. The trailing edge is disposed in a radial plane at least approximately perpendicular to an axis of rotation of the impeller. The leading edge of the point of the central flow thread has a leading angle of about 30.degree. to 40.degree. and the trailing edge is inclined in such a way that its corner point at an inner torus, delimiting an inner side of the impeller, is displaced by an angle of rotation in the direction of rotation toward the front with respect to its corner point at the outer torus which delimits the outer portion of the impeller.

Abstract: A hydraulic torque converter comprises vaned members, viz. an impeller, a turbine, and a stator designed to take up reactive torque. Each vaned member consists of a casing and an inner ring to which are fixed vanes which form a closed fluid circuit enclosed on the outside by the vaned-member casings which jointly form an outer toroidal surface, the inside enclosure being made up of the inner rings which jointly form an inner toroidal surface. The vanes of at least one of the vaned members are secured to the casing and inner ring by means of tongues fitted into slots provided in said casing and inner ring. Said vanes have a hydrodynamic profile of varying thickness and the body of each vane contains a plate whose projecting elements form said tongues.The torque converter constituting the present invention, when used in a passenger car, increases the efficiency of the transmission by 1-3 percent.

Abstract: A method of manufacturing a hydraulic torque converter impeller member and the product of such manufacture in which a hardened steel cylindrical bearing is assembled to a drawn hub portion of a generally annular sheet metal part to comprise a torque converter impeller comprising the steps of (1) semidrawing the part to include a partly drawn hub portion, (2) placing a hardened cylindrical bearing in a die mechanism, (3) assembling the generally annular part into the die mechanism with the hub portion engaged in the cylindrical bearing (4) drawing and extruding the hub by moving an object the size of the desired finished inside diameter of the hub through same whereby the hub is formed and forced against the bearing member with sufficient force to make a permanent connection between the hub and bearing, and (5) trimming the excess material from the outer end of the hub portion to conform same to the dimensions of the cylindrical bearing.

Abstract: A pump wheel for a hydrodynamic unit, especially for a torque converter or a hydrodynamic coupling of motor vehicles, with a pump wheel outer shell that consists of cold-deformed sheet metal material with a welded-in hub member and which receives the pump wheel blades; the pump wheel blades are thereby cast together with a shell member matched to the inner surface of the pump wheel outer shell, whereby the shell member is so inserted into the pump wheel outer shell that entrainment members cast integral therewith engage in corresponding apertures of the pump wheel outer shell.

Abstract: A method of manufacturing a hydraulic torque converter impeller member and the product of such manufacture in which a hardened steel cylindrical bearing is assembled to a drawn hub portion of a generally annular sheet metal part to comprise a torque converter impeller comprising the steps of (1) semidrawing the part to include a partly drawn hub portion, (2) placing a hardened cylindrical bearing in a die mechanism, (3) assembling the generally annular part into the die mechanism with the hub portion engaged in the cylindrical bearing (4) drawing and extruding the hub by moving an object the size of the desired finished inside diameter of the hub through same whereby the hub is formed and forced against the bearing member with sufficient force to make a permanent connection between the hub and bearing, and (5) trimming the excess material from the outer end of the hub portion to conform same to the dimensions of the cylindrical bearing.

Abstract: A plurality of exactly alike vane members are press stamped from a sheet of metal. Each vane member has a blade portion, a core ring portion, a supporting shell portion, a cooling fin portion, and a shrouded ring portion. The vane members are fitted together to form a vaned element with a core ring, a supporting shell and a shrouded cooling fan.

Abstract: Hydrodynamic unit rotor in which a central flange portion of an outer sheet metal shell is interleaved with metal connector plates. The connector plates and flange portion are secured to each other and to a small steel hub by annular electron beam welds.