Abstract: A power transmission roller assembly includes a power transmission roller configured to be brought into contact with the driving roller and the driven roller, a pivot shaft fixed to a vehicle body, a pivot arm arranged radially inside of the power transmission roller and pivotally mounted on the pivot shaft, and a roller support bearing rotatably supporting the power transmission roller. A pair of biasing members are mounted to the pivot arm and bias the roller support bearing to a predetermined position between the driving roller and the driven roller such that the abutment force between the driving roller and the power transmission roller is balanced with the abutment force between the driven roller and the power transmission roller. Sliding members are mounted on respective shafts of the biasing members to extend through the sliding members, and frictional forces are generated between the sliding members and the respective shafts.

Abstract: A drive mechanism includes an input member rotatable about an input axis of rotation. The input member includes a partial spheroid-shaped input traction surface. The drive mechanism further includes an output member rotatable about an output axis of rotation. The output member includes a partial spheroid-shaped output traction surface. A ring member overlays the input and output members. The ring member is rotatable in a rotational plane and includes a ring traction surface that engages the input traction surface of the input member and the output traction surface of the output member to rotatably couple the input member to the output member.

Abstract: An automated manual transmission apparatus for a vehicle, may include a shifting unit having a plurality of stages between an input shaft and an output shaft and selectively cutting power to the input shaft and the output shaft when shifting between the stages, and a continuous transmission mechanism that may be disposed between the output shaft and a power supply that supplies the power to the input shaft of the shifting unit, wherein the continuous transmission mechanism selectively transmits the power from the power supply to the output shaft with a continuous transmission gear ratio.

Abstract: Disclosed is a continuously variable transmission including: a pair of pressing means that form a torque transmission contact portion in a disk overlapping area where the input disk and the output disk are overlapped; target slip rate setting means that is configured to set a target slip rate between the input disk and the output disk in the torque transmission contact portion to a value higher than a torque transmission start slip rate in the torque transmission contact portion; and control means that is configured to control a force for clamping and pressing both the disks using the pressing means such that an actual slip rate in the torque transmission contact portion becomes the target slip rate.

Abstract: In a disc grinder, a spindle mounted with a grindstone intersects an output shaft of an electric motor. The disc grinder includes the three-point pressing continuously-variable transmission between the output shaft of the electric motor and a bevel gear train. The bevel gear train is used for deceleration. The traction grease having a high traction coefficient is used as the lubricant of the traction drive. A grease reservoir or felt members arranged in sliding contact with the pressing parts are disposed in the transmission case.

Abstract: Components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT) are provided. In one aspect, a control system is adapted to facilitate a change in the ratio of a CVT. A control system includes a control reference nut coupled to a feedback cam and operably coupled to a skew cam. In some cases, the skew cam is configured to interact with carrier plates of a CVT. Various inventive feedback cams and skew cams can be used to facilitate shifting the ratio of a CVT. In some transmissions described, the planet subassemblies include legs configured to cooperate with the carrier plates. In some cases, a neutralizer assembly is operably coupled to the carrier plates. A shift cam and a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are provided.

Abstract: An unlocking controller is provided for an irreversible rotary transmission system having the irreversible rotary transmission system having an irreversible rotation transmission element arranged between an input shaft and an output shaft. The unlocking controller includes an input shaft rotation direction determination section and an unlocking torque setting section. The input shaft rotation direction determination section determines whether an input shaft rotational direction is the same as, or opposite to, a direction of the load torque of the output shaft. The unlocking torque setting section conducts an unlocking torque control that sets the unlocking torque a higher value when the input shaft rotational direction and the direction of the load torque of the output shaft are the same as while the lock is released, than when the input shaft rotational direction is opposite to the direction of the direction of the load torque of the output shaft.

Abstract: A continuously variable transmission having a continuously variable transmission mechanism including an input member, an output member, and a rotary member sandwiched therebetween, transmitting torque between the input member and the output member by means of frictional forces generated by pushing the input member and the output member against the rotary member, and continuously varying a transmission gear ratio between the input member and the output member, an axial force generating portion which rotates in one direction to generate a first axial force for pushing one of the input member and the output member toward the other and rotates in the other direction to generate a second axial force opposite to the first force, and an opposite axial force transmitting portion for transmitting the second force to the other of the input member and the output member when the axial force generating portion generates the second force.

Abstract: A vehicle drive force distributing apparatus includes an irreversible transmission mechanism, an operating state determining component and a command value resolution switching component. The irreversible transmission mechanism prevents a radially oriented pressing force, generated between first and second rollers based on an inter-roller radial pressing force command value, from decreasing during a period while command value is constant to maintain the radially oriented pressing force at a prescribed value without operating an inter-roller radial pressing force generating source. The operating state determining component determines whether first or second vehicle operating states exists during which a first or a lower second precision level of drive force distribution control, respectively, is to occur between main and subordinate drive wheels.

Abstract: An infinitely variable transmission, in which the driver and driven members can exchange their roles—with the driver becoming the driven, and vice versa. The initially chosen driver carries within it a number of movable parts, which the driving forces bring into contact with the driven member, in a manner designed to produce a momentary lock between the driver and driven members, at the point of the torque transfer between them. In one embodiment the driven member—which can be a flat disc—is clamped between two oppositely placed drivers. Infinite variability is achieved by controllably relocating the fixed diameter drivers to smaller or larger diameter points on the so clamped disc. The output can be harvested from the rotation of said driven disc directly. Or one or more driver members like these which are used to rotate said disc, can be brought into contact with different locations on said disc, and become driven by it.

Abstract: In a drive assembly for driving a pulley of a water pump of a combustion engine, a movable supporting arm is fitted idly with a drive wheel, and is loaded by a torsion spring to bring the drive wheel into angular engagement with the pulley fitted to the shaft of the pump, and with a drive belt of the engine; an actuating device (being activatable to exert a force in opposition to that exerted by the torsion spring, and detach the drive wheel from the pulley.

Abstract: There is provided a pressing device (12) capable of, although using two torque cams, setting an appropriate axial force characteristic which is neither excessive nor insufficient. A first torque cam (15) and a second torque cam (20) are disposed in parallel with a transmission path of torque. The first torque cam (15) passes transfer torque in a region (first stage, second stage) where the transfer torque is smaller than a predetermined value (b) to generate an axial force corresponding to the transfer torque. The second torque cam (20) passes transfer torque in a region (third stage) where the transfer torque is larger than the predetermined value (b) to generate an axial force corresponding to the transfer torque.

Abstract: The following steps are performed in the control method: determining a mode of operation from amongst a permanent mode and a transient mode, as a function of a set of variables comprising said estimated values; correcting the value of the speed of rotation of the outlet shaft in such a manner that: if the mode has been determined as being the permanent mode, then the moving average (L?) of the gear ratio (L) over a period (T) of a plurality of unit time intervals lies between a first threshold value (S1) that is negative and a second threshold value (S2) that is positive; and if the mode has been determined as being the transient mode, then said moving average (L?) of the gear ratio (L) lies outside the range of values defined by the first and second threshold value (S1, S2).

Abstract: An articulated-arm assembly for a friction gear of an internal combustion engine that is equipped with belt-driven auxiliary assemblies. The assembly comprises a friction wheel which is urged into engagement with a belt of the auxiliary belt drive, and an articulated arm which guides the friction wheel and can be pivoted about an axis. This arrangement provides a compact articulation that uses existing installation space for the mounting of the articulated-arm assembly. The articulated arm is provided on a mounting unit with a pivot actuator, and preferably with a fixing device configured as a multi-part housing that permits the entire articulated-arm assembly to be mounted on the engine.

Abstract: A variable ratio transmission has a rotating drive cone with a gear at its narrowest diameter end to provide a non-slip high torque drive in low gear. A worm gear and drive shaft smoothly move an output drive disk back and forth along the drive cone to provide a smooth infinitely adjustable gear ratio to the output drive shaft. A slip clutch and forward, neutral, reverse transmission make the system suitable for motor vehicles especially trucks.

Abstract: The invention relates to a stepless friction drive (1) in which friction wheels (2) are mounted. Said friction drive is provided with a system that allows a compensatory displacement of the corresponding friction wheel (2) when the input and output wheels are elastically deformed. Said system is mounted between the lower end of every support (1) and the hydraulic piston (6). The compensation system comprises an upper bearing shell (3), a lower bearing shell (5) and balls (4) that are maintained in a defined arrangement by means of a cage (9).

Abstract: A continuously variable transmission is disclosed for use in rotationally or linearly powered machines and vehicles. The transmission provides a simple manual shifting method for the user. Further, the practical commercialization of traction roller transmissions requires improvements in the reliability, ease of shifting, function and simplicity of the transmission. The present invention includes a continuously variable transmission that may be employed in connection with any type of machine that is in need of a transmission. For example, the transmission may be used in (i) a motorized vehicle such as an automobile, motorcycle, or watercraft, (ii) a non-motorized vehicle such as a bicycle, tricycle, scooter, exercise equipment or (iii) industrial equipment, such as a drill press, power generating equipment, or textile mill.

Abstract: The present invention pertains to the field of machine-tooling and essentially relates to a continuously variable transmission that comprises a central shaft (1), an epicycle (5) having outer central discs (4) attached thereon, solar wheels in the form of inner central discs (2), a carrier (6), a plurality of intermediate friction discs (3) mounted in the support (6) using axes (7) as well as rotating levers (12) and a mechanism for the combined modification of the transmission ratio and of the pressure. The latter includes power members applying an axial action (11) which are arranged on the end sides of all the above-mentioned central friction discs (2, 4), or else members pressing on the rotating levers as well as power members applying an axial action which are arranged on the outer side of the central friction discs so as to ensure contact in predetermined annular areas.

Abstract: A toroidal continuously variable transmission is provided with a power roller 8 which is gripped between input/output disks 5, 6 arranged on the same axis, a cam flange 2 which is disposed on the same axis as the input disk 5 and is connected to an input shaft 1, and cam rollers 3 which are gripped between the cam flange 2 and the rear face of the input disk 5. Bearings 41, 44, 45 are interposed in the contact position on the long radius end face 3b of the cam roller 3 and the inner circumference of the retainer 4. These bearings allow the reduction of frictional resistance on the contact point of the cam roller 3 and the retainer 4 and improve the torque transmission capacity and component lifespan of the toroidal continuously variable transmission.