Abstract: Disclosed is a continuously variable transmission including: a pair of pressing means that form a torque transmission contact region in a disk overlapping area where the input disk and the output disk are overlapped; a support shaft installed with the pressing means; a first support portion that tiltably supports one end side of the support shaft; a second support portion that is positioned in an upstream side of a rotation direction of the input disk from the pressing means and tiltably supports the other end side of the support shaft; and shift means that shifts the second support portion along the connecting line, wherein the pressing means is tilted together with the support shaft, and the first support portion and the pressing means move in synchronization with movement of the second support portion when the second support portion is shifted by the shift means along the connecting line.

Abstract: Disclosed is a continuously variable transmission including: a pair of pressing means provided movably along a shaft center connecting line obtained by connecting a shaft center of the input shaft and a shaft center of the output shaft in a disk overlapping area where the input disk and the output disk are overlapped, so that a torque transmission contact portion is formed by clamping and pressing both the disks in a position corresponding to a target shift ratio; and a pair of support means that support the pressing means by using one end side as a fulcrum, are configured to move along the shaft center connecting line in synchronization with the pressing means, and are configured to generate a force for clamping and pressing both the disks using the pressing means by virtue of a clamping force applied to the other end side.

Abstract: Disclosed is a continuously variable transmission including: a pair of pressing units; a pair of first support units that support the pressing units by using one end side as a fulcrum, and generate a force for clamping and pressing both the disks using the pressing unit by virtue of a clamping force applied to the other end side; a pair of second support units that extend along a connecting line in parallel with the shaft center connecting line and are configured to clamp and support both the disks such that the other end side of the pair of first support units can move along the connecting line to generate the clamping force; and a clamping force adjustment unit connected to an end of the pair of second support units opposite to the pivot shaft side to adjust the clamping force of the second support units.

Abstract: In a transmission having an input disk installed on an input shaft and an output disk installed on an output shaft, a pair of pressure rollers is provided to be movable along a two-axes connecting line of the axes of the input and output shafts, within a disk overlapping area that the input and output disks overlap with each other. The pressure roller pair is configured to sandwich the input and output disks while applying contact pressure from the outside disk faces at a position corresponding to a required transmission ratio, for creating a torque-transmission contacting portion by elastic deformation of the disks. A biasing device is provided for producing a biasing force from which the contact pressure arises. A biasing-force adjustment device is also provided for adjusting the biasing force to produce an appropriate magnitude of contact pressure suited to a shifting condition.

Abstract: In a multistage transmission, a pair of pressure rollers is provided to be movable along a two-axes connecting line of input and output shafts within a disk overlapping area of input and output disks, and configured to sandwich the input and output disks while applying contact pressure from the outside disk faces at a position corresponding to a required transmission ratio. A plurality of ridged portions, formed on each of the input and output disks, are configured such that the entire length of the two-axes connecting line is divided into an input-side driving radius and an output-side driving radius, both determined based on the required transmission ratio, and that an apex of a selected input-side ridged portion and an apex of a selected output-side ridged portion, both determined based on the required transmission ratio, are arranged to oppose each other on the two-axes connecting line.

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: A single drive ring CVT coupler. Opposing inclined planar sides on outer circumferences of the drive ring have a high friction coefficient for enhanced engagement and power transmission between the pulleys and the drive ring. The drive ring rotationally operates between the cooperating pulleys of a moveable sheave CVT transmission. The opposing sides are inclined at an angle to each other for proper fit between the sheaves of the driver pulley and driven pulley. The drive ring operates between the outboard portions of each pulley. In an alternate embodiment, a drive ring operates in a bearing and is retained between the driver and driven pulleys by a retainer that spans between the pulley shafts. The drive ring comprises inclined opposing frictional sides on outer circumferences for frictionally engaging the sheave sides of a driver pulley and driven pulley. The drive ring operates between the inboard portions of the driver and driven pulleys.

Abstract: A steplessly adjustable pre-stretched film wrapping apparatus includes a downstream film roller driven by a motor through a first shaft and an upstream film roller connected to the downstream roller with a steplessly adjustable mechanical coupling system for unwinding and stretching a film web from a film roll and extending therebetween. The coupling system includes an input disk mounted to an input shaft that is driven by the motor and in turn drives the downstream roller and having a thickness gradually reduced from a center portion to the peripheral edge, and an output disk mounted to an output shaft that drives the upstream roller and having a thickness gradually reduced from a center portion to the peripheral edge thereof. A pair of cramp disks are mounted on a floating shaft which is manually movable between the input disk and the output disk to change the center distance between the floating shaft and both of the input and output shafts.