Abstract: In a toroidal continuously variable transmission including at least one transmission unit including: an input disc and an output disc disposed coaxially; and a power roller tiltably interposed between the input disc and the output disc and configured to transmit a driving force from the input disc to the output disc, an integrally rotating member disposed so as to be spaced apart in an axial direction from at least one disc of the input disc and the output disc of each transmission unit and configured to rotate together with the at least one disc, and an annular interposed member provided between the at least one disc and the integrally rotating member and configured to rotate together with the at least one disc, are provided, and the interposed member is formed with a balance adjustment portion capable of adjusting weight balance in a circumferential direction.

Abstract: A rotation generating system comprises a base disk defined by a rim, top and bottom surfaces; a ball bearing engaged on and along the disk rim, said ball bearing comprising balls, a ring rotatably engaging the balls to the disk rim, and side supports propping the balls between the disk rim and the ring; and a shaft having first and second ends, wherein the first end is fixed to an eccentric portion of the disk top surface, wherein the shaft is angled with the disk top surface by forty-five (45) degrees.

Abstract: A direct drive transmission system suitable for use with scooters, go-carts or motorcycles is disclosed. The transmission system comprises a drive shaft coupled to a motor shaft and a friction element which is guided longitudinally on said drive shaft, rotating with the rotation of the drive shaft. The system further comprises a roll bearing fixedly attached around at least part of the periphery of its inner ring to an end of the friction element and a stopper which is fixedly attached to the outer ring of said roll bearing. The stopper is adapted to affix a wire, which when pulled, moves longitudinally said friction element towards the inner end of the drive shaft so as to allow engagement of said friction element onto a traction surface of the drive wheel.

Abstract: A friction drive device has first and second rollers, in which the ratio of the transmission power and the pressing power is nearly constant regardless of the magnitude of the transmission power. The rollers have center axes that are spaced apart by prescribed radial distance, and arranged relative to an x y coordinate system when the rollers are not under load such that the x y coordinate system has an origin corresponding to the center axis of the first roller, and the y-axis passes through the center axis of the second roller. The cam surface is located in a first quadrant of the x y coordinate system, and has a concave arc with a single radius, such that the concave arc has a cam surface center located in a third quadrant of the x y coordinate system near or on an imaginary arc defined by the prescribed radial distance.

Abstract: A frictional drive transmission basically comprises a transmission case, a drive roller unit, a driven roller unit, a gear shifting mechanism and an elastic member. Each of the roller units has a plurality of rollers with each of the driven rollers being associated with a corresponding one of the drive rollers to form roller pairs. The gear shifting mechanism is operatively coupled to one of the roller units to selectively contact one of the roller pairs together to form a contacting roller pair. A cam-shaped support member is provided with a mounting surface and a cam slanted surface such that contact surfaces thereof forms an angle smaller than forty-five degrees with respect to the mounting surface. The elastic member is arranged between the transmission case and the mounting surface of the cam-shaped support member to apply a pressing force in a contact direction of a contacting roller pair.

Abstract: A continuously variable transmission (CVT) having a main shaft configured to support and position various components of the CVT. Shift cam discs cooperate with ball-leg assemblies to shift the transmission ration of the CVT. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed.

Abstract: An output transfer group, or drop box, can include a housing and a gear transfer train, rotatably supported within the housing, that includes an input gear adapted for enmeshing engagement with a transmission output shaft and a gear transfer output shaft that is rotatable upon rotation of the input gear. A coupler can be provided that includes a hub rotatively coupled with the gear transfer output shaft, a bearing carrier, a coupler output shaft rotatively coupled to the bearing carrier, and a coupling mechanism rotatively coupled to the bearing carrier. The coupling mechanism can be movable between an engaged position, wherein the coupling mechanism is rotatively coupled to the hub, and a disengaged position, wherein the coupling mechanism is disengaged from the hub. A solenoid can be arranged with the coupling mechanism to selectively move the coupling mechanism from the disengaged position to the engaged position.

Abstract: The present invention provides a new bearing device of free rolling parts. According to the basic embodiment the bearing device is comprised of: an inner race, an outer race, two rows of rolling parts wherein each rolling part is in not in a contact with two adjacent rolling parts in the same row and in contact with rolling parts of at least one adjacent row and/or with the surface of one of the races. The bearing structure is designed to create orbital eccentricity between the inner race and the outer race. When a load is applied on said bearing it is equally distributed over all rolling parts. Furthermore, the load applied on said bearing decrease the orbital eccentricity wherein minimum limit of orbital eccentricity is maintained through the working process. The device engagement of rolling parts is slack-free.

Abstract: A power transmission apparatus is disclosed. A pulley is journalled through a ball bearing on the outer periphery of a bearing support portion arranged on a housing, and a metal ring is fitted on the inner periphery of the pulley. The outer ring of the ball bearing is press-fitted into the inner periphery of the metal ring, and a punch is forcibly pushed into a front-side end surface of the ring. In this way, punched holes each having a sectional area progressively increased from the rear to front side are formed, and the portions of the metal ring near to the inner periphery than the punched holes are pushed out and caulked. Thus, caulked portions are formed to fixedly caulk the outer ring.

Abstract: A continuously variable mechanical transmission comprised of two wheels, either friction or toothed, of which one or both are in the shape of hemispheres. A hemisphere wheel is mounted through a bearing on a mounting with two pivots attached to the outer race of the bearing, allowing the wheel to rotate around two perpendicular accesses. The center of the wheel is attached to the shaft through a single or double universal joint or a flexible shaft. The other wheel can be a regular narrow wheel fixed to the second shaft. By rotating the hemisphere wheel around the mounting pivots the diameter of the wheel engaged with the second wheel is increased or decreased allowing the transmission rate to vary.

Abstract: A high-speed fluidic device has a friction roller type speed-increasing mechanism, an electric motor, and a high-speed fluidic machine, wherein: the friction roller type speed-increasing mechanism includes a housing, a low-speed side member having an outer ring provided at one end portion thereof, a high-speed side shaft rotatably supported by the housing so as to be eccentric to the low-speed side member and the outer ring, at least one guide roller rotatably supported between the outer ring and the high-speed side shaft, and at least one movable roller rotatably supported between the outer ring and the high-speed side shaft; the electric motor drives the friction roller type speed-increasing mechanism; and the high-speed fluidic machine is connected to the high-speed side shaft so as to be driven by the high-speed side shaft.

Abstract: A toroidal variable-speed drive unit includes at least one axial offset transmission, at least one actuating member, pivotable supporting journals, and rollers arranged on the pivotable supporting journals which are coupled to one another by the at least one axial offset transmission and can be supported on the at least one actuating member, wherein the rollers are arranged between the actuating member and the at least one axial offset transmission.

Abstract: A traction drive type driving apparatus is provided, by which any particular pressing mechanism is unnecessary, by which a big deformation can be obtained easily, in which decreasing degree of the pressing load is extremely small against small amount of abrasion, in which the test for confirming the pressing load at a desired amount can be done easily, and which has a readily constructible hollow structure. The traction drive type driving apparatus comprises an externally contacting shaft (2) located at the center, a plurality of intermediate shafts (1) equidistantly disposed around and externally contacting with the externally contacting shaft (2), and an internally contacting cylinder (3) internally contacting with the intermediate shafts (1), at least one of the intermediate shafts offset from the center is an input shaft, and the externally contacting shaft (2) is a ring-like hollow cylinder and is held by the intermediate shafts (1) to form a floating ring without disposing any particular bearing.

Abstract: At least one of input/output disks, a power roller and a cam disk of a toroidal type continuously variable transmission is formed of a high-cleanness steel in which a size of a maximum inclusion is estimated by the following extremum statistical process. In step S1, a plane including a central line of the high-cleanness steel is cut out in a direction of rolling of the high-cleanness steel. In step S2, a portion d of the cut-out cross-section, which is defined by 40% of a diameter D in the vicinity of the central line, is used as a to-be-tested surface. In step S3, a test reference area S.sub.0 is set at an area not less than 300 mm.sup.2 within the to-be-tested surface, and a root of an area of the maximum inclusion is measured five times or more. In step S4, a maximum inclusion distribution straight line is obtained. In step S5, the root, that is, the size of the area of the maximum inclusion within an estimation area S is estimated.

Abstract: A traction drive type driving apparatus is provided, by which any particular pressing mechanism is unnecessary, by which a big deformation can be obtained easily, in which decreasing degree of the pressing load is extremely small against small amount of abrasion, in which the test for confirming the pressing load at a desired amount can be done easily, and which has a readily constructible hollow structure. The traction drive type driving apparatus comprises an externally contacting shaft (2) located at the center, a plurality of intermediate shafts (1) equidistantly disposed around and externally contacting with the externally contacting shaft (2), and an internally contacting cylinder (3) internally contacting with the intermediate shafts (1), at least one of the intermediate shafts offset from the center is an input shaft, and the externally contacting shaft (2) is a ring-like hollow cylinder and is held by the intermediate shafts (1) to form a floating ring without disposing any particular bearing.

Abstract: In a toroidal type continuously variable transmission, an output gear is supported by a taper roller bearing comprising an inner wheel in contact with an output gear, an outer wheel supported by a casing, and a taper roller that rotates in contact with the inner wheel and the outer wheel. Preferably, a shoulder part in contact with the output gear is formed on the output disk, and deformation of the output gear is prevented by setting an outer diameter R3 of the shoulder part to be equal to or less than a maximum contact diameter R1 with which the inner wheel is in contact with the taper roller.

Abstract: Traction drive transmissions which may be utilized as speed increasers or speed reducers for various power and rotary motor applications including for use in transmissions for helicopter main rotor and tail rotor drives wherein power from the primary input source is transmitted to output shafts or driven elements which may be disposed at a variety of angular relationships with respect to the input source through multiple rollers which are shaped and in frictionally driven contact with one another so as to effectively divide the input load into multiple power paths to the output shafts or driven elements and wherein the rollers are oriented so as to reduce or eliminate the radial loading of stresses on the bearings in which the rollers are mounted.