Abstract: A sufficient quantity of lubricating oil can be sent into a radial needle bearing and a thrust ball bearing supporting a power roller. The lubricating oil is discharged into a gap space through a send-in side oil supply path formed in a trunnion, and is sent into a receiving side oil supply path in a pivotal support shaft portion. A thrust sliding bearing having a through-hole is provided in the gap space. The downstream end opening of the send-in side oil supply path and the upstream end opening of the receiving side oil supply path are located inside the through-hole.

Abstract: In order to improve the transmission efficiency of a toroidal type continuously variable transmission by reducing the dynamic torque loss of an antifriction bearing, a first output gear is constituted by a pair of helical gears of which the directions of inclinations are opposite to each other, and a second output gear is constituted by a double helical gear. By this construction, a thrust force created in the meshing portion between the first and second output gears is offset and the dynamic torque loss of the antifriction bearing is reduced.

Abstract: A toroidal type continuously variable transmission is arranged to support one disc on the input side, facing a pressure device, on the outer circumference of an input shaft through a needle bearing. The other disc on the input side is supported on the input shaft by means of a spline coupling and a flange. A cam board which constitutes a pressure device is supported on the outer circumference of the input shaft through a ball spline. Disc springs are installed between one face of the cam board and a loading nut. In this way, the number of difficult processing steps and the degree of required precision can be reduced at the same time, hence making it possible to implement the reduction of the manufacturing costs.

Abstract: The total of thrust loads acting on first, second, and third angular ball bearings upon operation of a transmission is reduced. In order to reduce torque losses of the angular ball bearings, a toroidal type continuously variable transmission is arranged so that a thrust load based on the counterforce upon operation of a compression device is received by the third angular ball bearing, and the difference between a thrust load acting on an input-side disk and a thrust load acting on an output-side disk acts on an output shaft. A thrust load corresponding the difference is received by one of the first and second angular ball bearings.

Abstract: In order to prevent portions of a thrust rolling bearing from being worn significantly and being burned, grooves are formed on both inner and outer surfaces of a retainer so as to traverse pockets. Lubricating oil is supplied from oiling holes formed in an outer race toward the retainer. The lubricating oil supplied from the oiling holes flows through the grooves to the rolling bearing uniformly.

Abstract: A toroidal-type continuously variable transmission provides an input side disk disposed on an input shaft, an output side disk disposed on an output shaft, and a power roller for transmitting motive power of the input shaft to the output shaft while engaging both the input side disk and the output side disk, in which the input side disk, the output side disk, and the power roller made of a material are subjected to either a carburizing and grinding process or to a carbonitriding and grinding process so that effective carburized depths of the input side disk, the output side disk, and the power roller are limited to a range between 2.0 mm and 4.0 mm. The toroidal-type continuously variable transmission is capable of improving not only the rolling contact lives of the traction surfaces of the input and output side disks as well as the traction surfaces of the power rollers, but also the fatigue fracture lives of the input and output side disks and power rollers.

Abstract: A lubricating oil composition is herein disclosed which comprises as the main compounds, (A) a base oil comprising a mineral oil or a synthetic oil; (B) a hindered phenol compound represented by the general formula (I) or (II) ##STR1## wherein m is an integer of 1 to 5; (C) an alkylated diphenylamine compound; and (D) a borated succinic acid imide compound. This lubricating oil composition is excellent in heat resistance and oxidation stability in a gaseous phase of the oil, and it stably functions for a long time as a traction drive oil or the like.

Abstract: A toroidal type continuously variable transmission is provided which allows the outer peripheral face of power rollers to be processed by industrial techniques, and prevents an outer ring and a retainer from rubbing against an input side concave surface or an output side concave surface. The outer peripheral face of the power roller is formed of a spherical surface portion and a cylindrical surface portion continuous from a larger diameter side of the spherical surface portion, and the outer diameter of the cylindrical surface portion is selected to be longer than the outer diameter of the outer ring and the outer diameter of the retainer.

Abstract: A loading cam device is constructed of a first cam surface, a second cam surface, a ring-shaped retainer disposed between the first and second cam surfaces and defining pockets at angular intervals, and rolling members maintained in contact with the first and second cam surfaces while rotatably held within the respective pockets. The circumferential width of each pocket is smaller at each side of the retainer but greater along a thicknesswise central axis of the retainer, both compared with the outer diameter of the rolling members. As an alternative, the thickness of the retainer is a little smaller at a location adjacent to each pocket but significantly smaller at a location remote from the pocket, both compared with the thickness the outer diameter.

Abstract: A toroidal type continuously variable transmission intended to prevent an increase in weight of the rear end portion when constructing a automobile transmission and restrain vibrations and noised during an operation. An input shaft is rotated by a crankshaft of an engine through a gear transmission mechanism provided at the front end. The rotations of this input shaft are transmitted to input disks via a driving gear, a driven gear, an external rotary cylinder, cam plates and rollers. Power rollers rotate with rotations of the input disks. The rotations of the power rollers are transmitted to an output shaft via output disks, whereby the output shaft is rotated.

Abstract: In a toroidal type continuously variable transmission having an input disk, an output disk and power rollers sandwiched and frictionally engaged between the input and output disks so as to transmit rotational power therebetween at a transmission ratio variable according to the inclination of the power rollers relative to the input and output disks, a stationary shaft is provided as supported by a housing, and the input and output disks are rotatably supported by the stationary shaft via individual radial bearing means and individual axial bearing means. The stationary shaft has an axial bore and transverse orifices, and the bearings are lubricated by lubrication oil supplied through the axial bore and the transverse orifices.

Abstract: An input disc and/or an output disc of a variable-speed drive, as of the toroidal type, has a central boss portion for attachment to a shaft and a radially extending flange portion with an annular concave power-roller engaging surface. An opposite surface of the flange portion is an annular convex surface having a plurality of radial reinforcement ribs formed thereon. In one preferred form, the ribs have upper surfaces which are inclined so that the front edges thereof are lower than the rear edges thereof in a rotational direction of the disc.

Abstract: An input shaft of a toroidal-type infinitely variable transmission is supported at opposite ends by respective bearings which are secured to a housing, and input and output disks and power rollers are mounted at an intermediate portion of the input shaft. The input shaft has a flange at one end which is connected to an engine, and a pressure adjusting Belleville washer is interposed between the inner end face of the flange and the outer end face of the bearing to bias the input shaft in the direction of the engine so that a predetermined pressing force is applied to the input and output disks and the power rollers during a period in which a small input torque is transmitted to the input shaft. As the input torque increases, the input shaft is moved axially together with a loading cam against the spring force of the Belleville washer, and the inner end face of the flange and the outer end face of the bearing directly abut each other so that a required reaction force is obtained.

Abstract: In a toroidal type infinitely variable transmission wherein power is transmitted between input and output discs by a transmission roller, the angle .theta. formed by the points of contact with the two discs with respect to the center of rotation of the transmission roller is set to 105.degree. or greater. Also, the curvature ratio R.sub.2 /R.sub.1 between the radius of curvature R.sub.2 of the traction surface of the transmission roller and the radius of curvature R.sub.1 of the toroidal surfaces of the input and output discs is 0.6 or more.

Abstract: There is disclosed an engine ignition control device including a control switch element arranged, in its ON state, to pass a current through a primary side of an ignition coil and, in its OFF state, to break the current passing through the primary side of the ignition coil, thereby inducing a high voltage across a secondary side of the ignition coil to cause an ignition of an engine.

Abstract: The present invention relates to a lubricating oil composition for traction drive, which consists essentially of:(A) a base oil containing as the main component a saturated hydrocarbon or hydrocarbons having fused ring and/or nonfused ring,(B) an ethylene-.alpha.-olefin copolymer having a number-average molecular weight of 800 to 8,000, and(C) an anti-wear agent.The lubricating oil compositions of the present invention are effectively used in winter and cold districts, since they have a high coefficient of traction and show a limited change in the coefficient of traction at low temperatures.

Abstract: A tilting angle detector detects a tilting angle of the power rollers which perform the transmission operation of a toroidal type infinitely variable transmission. Based on the detecting signal and a command value signal from command value selecting means for selecting a command value of the transmission ratio, control means controls the power rollers to tilt. In this control, correction means corrects at least one of the detecting signal of the tilting angle detector and the command value signal of the command value selecting means so that a relationship of the transmission ratio with respect to the tilting angle becomes linear, and thus the gain at each transmission ratio is made equal.

Abstract: A lubricant composition for transmission of power consisting essentially of (A) base oil of which main component is a saturated hydrocarbon having condensed ring and/or non-condensed ring, (B) one kind or more than two kinds of zinc dithiophosphate and/or oxymolybdenum organophosphorodithioate sulfide, (C) alkenyl succinimide and (D) rust inhibitor.

Abstract: A lubricant composition for transmission of power consisting essentially of (A) base oil of which main component is a saturated hydrocarbon having condensed ring and/or non-condensed ring, (B) one kind or more than two kinds of zinc dithiophosphate and/or oxymolybdenum organophosphorodithioate sulfide, and (C) at least one kind of compound selected from the group consisting of phosphoric ester, phosphorous ester and their amine salts.

Abstract: A transmission control apparatus for an infinitely variable transmission in which a transmission operating amount is selected by a transmission operating amount selecting system from a memory stored table based on transmission control information from transmission control information detectors which detect the transmission control information such as a throttle opening position command signal, etc., and a driving motor which enables the transmission operation of the infinitely variable transmission to be controlled in an open-loop fashion by a transmission control system in accordance with the transmission operating amount.