Class / Patent application number | Description | Number of patent applications / Date published |
476039000 | FRICTION GEAR INCLUDES IDLER ENGAGING FACING CONCAVE SURFACES | 34 |
20080269008 | Infinitely Variable Transmission - An infinitely variable transmission comprising a pair of rotary, generally conical, torque-transmitting members, each being mounted for rotation on its geometric axis, the angularity of the axes, one with respect to the other, being variable, the outer surfaces of each member having torque-transmitting needles extending outwardly from the generally conical surface, the needles of one member meshing with the needles of its companion member, the needles being capable of flexing whereby torque may be transmitted through the rotary members without frictional sliding motion at the area of meshing engagement of the needles, the angularity of one member with respect to the other permitting a wide torque-transmitting ratio range. | 10-30-2008 |
20090176616 | Continuously variable transmission - A continuously variable transmission includes an input shaft rotatably supported in a housing; a first speed change unit and a second speed change unit, provided within the housing and disposed facing each other symmetrically with respect to a plane normal to the axial direction of the input shaft, to continuously vary the speed of rotation of the input shaft using traction force; an output rotating gear supported to be able to rotate freely about the input shaft so that the rotation of the output rotating gear is synchronized with the rotation which has been varied in speed by the first speed change unit and the second speed change unit; and an output shaft. The torque of the input shaft can be doubled by the two speed change units while continuously varying the speed, and the thrust loads generated in the axial direction of the input shaft cancel each other out. | 07-09-2009 |
20100056322 | CONTINUOUSLY VARIABLE TRANSMISSION - Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a control system is adapted to facilitate a change in the ratio of a CVT. In another embodiment, a control system includes a stator plate configured to have a plurality of radially offset slots. Various inventive traction planet assemblies and stator plates can be used to facilitate shifting the ratio of a CVT. In some embodiments, the traction planet assemblies include planet axles configured to cooperate with the stator plate. In one embodiment, the stator plate is configured to rotate and apply a skew condition to each of the planet axles. In some embodiments, a stator driver is operably coupled to the stator plate. Embodiments of 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 disclosed. | 03-04-2010 |
20100197448 | INFINITELY VARIABLE TRANSMISSION WITH OFFSET OUTPUT SHAFT - An infinitely variable power transmission comprising an input shaft, a layshaft, a variator transmitting power from the input shaft to the layshaft, an output shaft, and an internal/external gear pair transmitting power from the layshaft to the output shaft. The output shaft axis may be offset a limited distance from the input shaft axis. | 08-05-2010 |
20110300988 | CONTINUOUSLY VARIABLE TRANSMISSION - The present invention discloses a continuously variable transmission employing an inner-outer spherical traction drive system which uses as a power transmission medium a bevel gear having a traction power transmission surface with an obtuse-angle cone shape. The continuously variable transmission comprises: a gear mounted to rotate with respect to a frame in which the continuously variable transmission is installed, a traction member mounted to rotate coaxially with the gear, power transmission assemblies which include a power roller having a ribbed power transmission part on one side meshed with the gear and a power transmission surface on the other side traction-coupled with the traction member and which transmit torque as the power roller meshes with the gear and traction-couples with the traction member simultaneously, a support member which arranges the power transmission assemblies in a radial direction thereon and supports the power transmission assemblies to couple with the traction member, and a transmission unit which controls the axial position between the traction member and the power transmission assemblies. Therefore, the speed ratio between the gear and the traction member is continuously varied by the transmission unit. | 12-08-2011 |
476040000 | Toroidal | 29 |
20080274855 | Gearless speed reducer or increaser - A gearless speed reducer or increaser consists of an input shaft, an output shaft, and a motor connected to the input shaft. There is an external race connected to one of the shafts, and an internal race attached to the other shaft. Two ball bearings are disposed between the races. After the ball bearings have been inserted, the shafts are tilted relative to each other so that the balls become fixed in pockets created between the races and cannot slide within the races. Rotating one of the shafts thus rotates the other shaft, since the balls do not slip but only rotate between the races. The system acts as a speed reducer or increaser due to the different diameters of the inner and outer races. The system can be uncoupled by pivoting the shafts back into alignment so that the balls can slide freely within the races. | 11-06-2008 |
20090221398 | DRIVE ROLLER CONTROL FOR TORIC-DRIVE TRANSMISSION - A continuously variable transmission, which comprises a drive race for receiving power input, a driven race for transmitting power output and a set of rollers between the races. Each roller in the set is capable of rotating to transfer motion from the drive race to the driven race, is capable of tilting about a first tilt axis to vary a ratio of the continuously variable transmission, and is capable of tilting about a second tilt axis different from the first tilt axis. The transmission further comprises a ratio change actuator acting on each roller of the set for tilting the roller about its second tilt axis, a tilt of the roller about its second tilt axis inducing a reaction force on the roller tending to tilt the roller about its first tilt axis and thus provoke a ratio change. The transmission also comprises a synchronization member coupling the rollers, when a tilting movement is imparted to the rollers about their respective first tilt axes, the synchronization member constraining the rollers to tilt in unison about the respective first tilt axes to produce a coordinated ratio change. | 09-03-2009 |
20090318260 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION UNIT AND CONTINUOUSLY VARIABLE TRANSMISSION - In this toroidal continuously variable transmission unit, a carrier | 12-24-2009 |
20110028267 | Variator - Variators that include a damped roller control part. | 02-03-2011 |
20110130244 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION - A toroidal continuously variable transmission of the present invention comprises: input side disks ( | 06-02-2011 |
20110230306 | VARIATOR - A variator ( | 09-22-2011 |
20120202644 | FULL TOROIDAL TRACTION DRIVE - A toroidal variable speed traction drive is provided. The drive comprises a driving disc and a driven disc. The discs have a common axis. A plurality of pairs of contacting rollers are interposed between the discs. The discs are urged together against the roller pairs (A) by a clamping force. Each of the rollers has a first rolling surface, by which it rolls on the other roller of the pair, and a second rolling surface by which it rolls on the toroidal surface of a corresponding disc. Each roller is mounted on a supporting axle about which it can rotate. The rotational axes of the rollers in a pair are supported in a plane that contains the two points where the rollers of the pair contact the discs. At least one of the rollers in each pair is adapted to be moved to adopt a stable position within the plane by the reactionary force exerted on it by the other roller of the pair. | 08-09-2012 |
20130017925 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSIONAANM Burtt; David JohnAACI EcclestonAACO GBAAGP Burtt; David John Eccleston GB - A variator has an input shaft ( | 01-17-2013 |
20130045831 | DRIVE MECHANISM FOR INFINITELY VARIABLE TRANSMISSION - A variator transmission comprises an input disc ( | 02-21-2013 |
20130244827 | TOROIDAL TRACTION DRIVE - A toroidal traction drive has an axial loading system with a primary loading component and a non-linear cam roller loading component. | 09-19-2013 |
20130260954 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION MECHANISM - A toroidal continuously variable transmission mechanism includes: a biasing device for biasing an input disc in a direction in which the input disc becomes closer to an output disc to press the input disc and the output disc against power rollers; a first bearing for supporting an input shaft on the input disc side; a second bearing for supporting the output disc; a first support member whose one end side is fixed to a base member, and which supports the first bearing; a second support member whose one end side is fixed to the base member, and which supports the second bearing; and a connecting member which connects opposite end sides of the first and second support members. Reaction forces are transmitted to the input disc and the output disc from the power rollers, and are supported by internal stresses of the base member and the connecting member. | 10-03-2013 |
20140135167 | TOROIDAL VARIABLE SPEED TRACTION DRIVE - A toroidal variable speed traction drive is provided. The drive includes a driving disc and a driven disc. The discs have a common axis of rotation. The inner face of each disc is formed with a negative shape of a toroid. The drive further includes a plurality of roller assemblies interposed between the discs, each roller assembly including a roller. The discs are urged together against the interposed roller assemblies by a clamping force. Each roller assembly being connected to a corresponding rotatable trunnion. The trunnion applies a steering force to the corresponding roller assembly at a point relative to the corresponding roller assembly; the applied steering force causing the roller of the corresponding roller assembly to steer and adopt different contact points. The point at which the steering force is applied is located offset from the trunnion rotational axis at a fixed distance. | 05-15-2014 |
20140378272 | CONTINUOUSLY VARIABLE TOROIDAL TRANSMISSION - In a toroidal variator a plurality of rolling elements ( | 12-25-2014 |
20150024900 | Toroidal Continuously-Variable Transmission - Construction of a toroidal continuously-variable transmission is achieved that simplifies the manufacture of parts, management of parts and assembly work, is able to easily reduce costs, stabilizes speed change operations, and is processed easily. An outer ring | 01-22-2015 |
476041000 | With condition responsive means to vary contact pressure | 1 |
20090325755 | Full-toroidal continuously variable transmission - A full-toroidal continuously variable transmission has a hydraulic actuator ( | 12-31-2009 |
476042000 | Plural toric cavities | 11 |
20080200300 | CONTINUOUSLY VARIABLE TRANSMISSION - 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. | 08-21-2008 |
20080220931 | FRICTIONAL DRIVE TRANSMISSION - 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. | 09-11-2008 |
20080254933 | Variator - A continuously variable ratio device (“variator”) is disclosed in which a pair of rotary races ( | 10-16-2008 |
20080305920 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION - Power roller-side concave grooves are opposed to disk-side concave grooves | 12-11-2008 |
20090023545 | STEADY-STATE AND TRANSITORY CONTROL FOR TRANSMISSION BETWEEN ENGINE AND ELECTRICAL POWER GENERATOR | 01-22-2009 |
20130035200 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION - The present invention achieves construction of a toroidal continuously variable transmission of which manufacture, management and assembly of parts can be performed easily, reduction of cost is easy and speed change operation is stabilized. This construction comprises support holes | 02-07-2013 |
20130130863 | VARIATOR OUTPUT GEARSET - A variator assembly for a CVT or an IVT includes an input shaft that defines an axis of rotation, an input disc rotationally coupled to the input shaft and coaxial with the axis of rotation, and an output disc rotationally coupled to the input disc and coaxial with the axis of rotation. The output disc includes a distal portion having an axial width. A gear is connected to the distal portion of the output disc. The gear has a plurality of gear teeth each having a gear tooth face width that is greater than the axial width of the distal portion of the output disc. | 05-23-2013 |
20130210574 | Drive Train Provided with a CVT - A drive train provided with a CVT that can be used in both CVT and Infinitely Variable Transmission (IVT) configurations and that include a High-Low gear selection assembly is described herein. Transitions between configurations are seamless to the operator. | 08-15-2013 |
20140349805 | Continuously Variable Transmission Provided with a Roller Parking Zone - Generally stated, various embodiments described herein concern a toroidal CVT provided with parking zones where the rollers are brought when the CVT is powered down. More specifically, a portion of the toroidal surfaces of the disks is reserved as a parking zone therefore preventing premature wear and/or damages to the working portion of the disks. | 11-27-2014 |
20150133262 | ROLLER POSITION CONTROL IN A TORIC-DRIVE CVT - A roller position control mechanism including a steering element, positioned inside the bearing of each roller and provided with a skew shaft and a steering shaft defining an angle therebetween. A spider element fixes the steering element to a longitudinal shaft of the CVT and a control ring element interconnects the steering elements of the various rollers. Movement of the control ring element with respect to the spider element translates to a tilting movement of the rollers, thanks to the angle between the skew and steering shafts. | 05-14-2015 |
20160025194 | TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION - Provided is a toroidal continuously variable transmission capable of preventing the application of bending stress to a variator shaft during rotation and the application of an eccentric load to each of support parts even when misalignment between the axis of a fitting hole formed in a post and the axis on which the variator shaft is supported occurs. | 01-28-2016 |
476043000 | Including threaded means to adjust idler | 1 |
20160069437 | MECHANICALLY OPERATIONAL STRUCTURE FOR CONTINUOUSLY VARIABLE TRANSMISSION - Disclosed is a mechanically operational arrangement for continuously variable transmission, comprising a central shaft ( | 03-10-2016 |
476044000 | Including toothed gearing to adjust idler | 1 |
20090203493 | VARIATOR - A variator ( | 08-13-2009 |
476046000 | Idler supported by roller bearing | 1 |
20110300989 | Drive Mechanism for Infinitely Variable Transmission - A variator transmission comprises an input shaft ( | 12-08-2011 |