| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 474017000 | Load responsive | 17 |
| 20080268992 | POWER UNIT FOR MOTORCYCLE - A motorcycle including a power transmission device including a continuously variable transmission having a belt wound around a drive pulley and around a driven pulley and a hydraulically-operated clutch provided on at least one of a drive pulley shaft and a driven pulley shaft and an internal combustion engine wherein a supply of working oil to the clutch and of lubricating oil to a continuously variable transmission is enabled while avoiding a complication of an oil passage configuration and an increase in the diameter of the pulley shaft. A clutch control oil passage directs working oil to a clutch and a lubricating oil passage directs lubricating oil to a continuously variable transmission are provided in the particular pulley shaft on which the clutch is provided, so as to be coaxial with each other and be axially isolated from each other. | 10-30-2008 |
| 20100234151 | SELF-TENSIONING PULLEY APPARATUS FOR BELT DRIVE - A pulley apparatus of a belt drive comprises a first and a second pulleys and a belt bearing. A first pulley is fixed coaxial to the power shaft and has a first pitch setting device. A second pulley is coaxially rotatable relative to the first and has a second pitch setting device. A belt bearing maintains a gross bearing surface to bear the belt at a pitch by a cooperation with the two pitch setting devices. Transmission of power loads the pulley apparatus wherein the two pulleys and the belt bearing all rotate together in the same direction at the same speed while the second pulley is induced by the loading to rotate relative to the first in the opposite direction. The load-induced relative rotation increases the pitch by adjustment in the cooperation until a fixed length of the belt allows no further relative movement between the two pulleys. Belt tension due to transmission of the load induces increased belt pressure onto the belt bearing to prevent belt slip in the pulley apparatus for sustained power transmission. | 09-16-2010 |
| 20110034279 | CONTROL DEVICE AND CONTROL METHOD FOR BELT-TYPE CONTINUOUSLY VARIABLE TRANSMISSION - A belt-type continuously variable transmission changes winding radii of a belt that is wound around an input-side and an output-side pulley to shift speeds. The belt-type continuously variable transmission is mounted on a vehicle that switches between two-wheel drive is transmitted only to front wheels and four-wheel drive. An electronic control unit that controls the belt-type continuously variable transmisson adjusts the belt clamping pressure of each pulley as torque is distributed to the rear wheels, to suppress muffled noise due to resonance of vehicle components with belt span vibrations. | 02-10-2011 |
| 20110172042 | SELF-TENSIONING BELT DRIVE FOR VEHICLE POWER TRAIN - A self-tensioning belt drive for vehicle power train has pulley assembly that comprises a first and a second pulley means and a belt bearing means. First pulley means is fixed coaxial to the power shaft and has a first pitch setting means. Second pulley means is coaxially rotatable relative to the first and has a second pitch setting means. Belt bearing means maintains a gross bearing surface to bear the belt at a pitch by a cooperation with the two pitch setting means. Transmission of power loads the pulley assembly wherein the two pulley means and the belt bearing means all rotate together in the same direction at the same speed while the second pulley means is induced by the loading to rotate relative to the first in the opposite direction. The load-induced relative rotation increases the pitch by adjustment in the cooperation until fixed length of the belt allows no further relative movement between the two pulley means. Belt tension due to transmission load induces increased belt pressure onto the belt bearing means to prevent belt slip in the pulley assembly for sustained power transmission. Speed changing in the drive comprises reducing the pitch in the pulley assembly that initiates the speed changing by reducing the rotational speed of one of the two pulley means. | 07-14-2011 |
| 20130150190 | Belt Type Continuously Variable Transmission And Pulley Sheave - Four types of pulley sheaves are common with one another in that each includes a pulley forming body having a tubular portion inserted around the corresponding shaft and a main body portion extending radially outward from one side of the tubular portion in an axis line direction, the main body portion including a conical friction surface inclined to be positioned closer to the other side of the tubular portion in the axis line direction, from an inner side to an outer side in a radial direction. The tubular portion of the pulley forming bodies that forms the driving-side and driven-side fixed pulley sheaves includes a fixing hole, while the tubular portion of the pulley forming bodies that forms the driving-side and driven-side movable pulley sheaves includes a sliding slot that allows the tubular portion to move along the axis line of the corresponding shaft only within the predetermined distance. | 06-13-2013 |
| 474018000 | With actuator driven by electrical or fluid motor | 7 |
| 20080312013 | Belt Continuously Variable Transmission for Straddle Type Vehicle, and Straddle Type Vehicle - [Problem to be Solved] To provide a belt continuously variable transmission for a straddle type vehicle that provides better shift response without the need of increasing the size of an electric motor. | 12-18-2008 |
| 20090069131 | OIL PRESSURE CONTROL APPARATUS - In one embodiment, an oil pressure control apparatus includes a belt-driven continuously variable transmission, a lockup clutch provided in a torque converter, a primary regulator valve that regulates a line oil pressure that becomes a source pressure of oil pressure of various parts, and a clamping oil pressure control valve that supplies a clamping oil pressure to a driven-side pulley of the belt-driven continuously variable transmission. Control of the primary regulator valve is performed with a control oil pressure of a linear solenoid valve that controls the clamping oil pressure control valve, and a control oil pressure of a linear solenoid valve that controls engagement/release of the lockup clutch. | 03-12-2009 |
| 20090176607 | Conical pulley with integrated torque sensor for a belt-driven conical-pulley transmission - A conical pulley assembly with integrated torque sensor. A torque-dependent force is transmitted through a transmitting component to a sensing piston whose position determines the pressure in a sensing chamber. The transmitting member is connected to the movable disk, and is formed in such a way that it transmits the torque-dependent force to the sensing piston in a manner that is dependent on the position of an axially movable disk of the conical pulley. | 07-09-2009 |
| 20090197717 | Hydraulic system - The invention relates to a hydraulic system for actuating a continuously variable belt-driven conical-pulley transmission having two conical pulleys encircled by an endless torque-transmitting means, each of which comprises two conical disks, one of which is axially movable depending on the pressure in an associated pressing chamber, and having a torque sensor which includes a torque sensing chamber that is connected to a hydraulic energy source and is linked with the pressing chambers. | 08-06-2009 |
| 20090209375 | BICYCLE COMPONENT POSITION CORRECTING DEVICE - A bicycle component position correcting device is basically provided with a first sensor, a second sensor, a comparison unit and a position adjuster. The first sensor detects a current absolute value of a positioning angle of a movable part of a bicycle component. The second sensor detects both a movement direction of the movable part and an amount of movement of the movable part. The comparison unit compares the current absolute value of the positioning angle of the movable part to a prestored reference value of the positioning angle of the movable part in response to a component operation command. The position adjuster selectively outputs an adjustment command to the movable part that adjusts the absolute value of the positioning angle of the movable part in accordance with both detected results of the first and second sensors. | 08-20-2009 |
| 20100099525 | Power transmission device and vehicle in which power transmission device is installed - A power transmission device includes a belt-type continuously variable transmission; a first fluid pressure cylinder; a second fluid pressure cylinder; a pressure-adjustment and pressure-feed device;a fluid outflow/inflow device; and a control unit that controls the pressure-adjustment and pressure-feed device based on a fluid pressure that is obtained from a thrust that is required for the second pulley in accordance with a driving state and that, by controlling the pressure-adjustment and pressure-feed device in this manner, controls the fluid outflow/inflow device such that a gear ratio is varied within a permitted gear ratio range in accordance with the fluid pressure that is pressure-fed from the pressure-adjustment and pressure-feed device in conjunction with the pressure adjustment. | 04-22-2010 |
| 20110028251 | MECHANICAL FUNCTION CONTROL OF CONTINUOUSLY VARIABLE TRANSMISSION HYDRAULIC SYSTEM - A simplified continuously variable transmission system control provides a variable clamping force and a differential cylinder pressure manipulation to change sheave ratios. The system control uses two pumps. The first pump provides the variable clamping force. The second pump provides pressure changes to effect ratio changes. The clamping force can be varied based upon operator demand on an associated engine. | 02-03-2011 |
| 474019000 | Via relatively rotating cam and follower | 5 |
| 20090042678 | REVERSIBLE DRIVEN PULLEY FOR A CONTINUOUSLY VARIABLE TRANSMISSION - The driven pulley ( | 02-12-2009 |
| 20090156338 | Pulley Assembly for a Continuously Variable Transmission - Pulley assembly for a continuously-variable vehicle transmission, comprising a support element having an axis, a first half-pulley rotationally connected to the support element, a second half-pulley facing the first half-pulley to define a seating adapted to house a drive belt, the second half-pulley being axially and circumferentially mobile in relation to the support element, and cam means functionally inserted between the second half-pulley and the support element to control the position of the second half-pulley. The cam means define a plurality of circumferential cavities carried by a peripheral portion of the second half-pulley, said cavities being defined by the first and second sides which are transverse to axis, and comprise a plurality of cam-followers which are connected to the support element and housed in the corresponding circumferential cavities to cooperate selectively with the first and second sides. | 06-18-2009 |
| 20130005522 | GENERATOR SET - A generator system includes a prime mover having a drive shaft and a throttle, a driven member having a rotor disposed on a rotor shaft, and a continuously variable transmission pulley system. The transmission pulley system includes a drive pulley coupled to the drive shaft and having a variable drive pulley effective diameter. A driven pulley coupled to the rotor shaft has a variable driven pulley effective diameter responsive to varying torque on the rotor shaft. A belt configured to engage the drive pulley and the driven pulley has a belt tension, wherein the drive pulley effective diameter varies in response to the belt tension. | 01-03-2013 |
| 20130288833 | CONTINUOUS VARIABLE CLUTCH - A continuous variable clutch is provided. The continuous variable clutch includes a first sheave member and a second sheave member. The first sheave member includes a first central hub and a first conical-faced surface extending radially from the first central hub. The second sheave member includes a second central hub and a second conical-faced surface that extends radially from the second central hub. The second central hub of the second sheave member is received in a cavity of the first central hub such that the first conical-faced surface of the first sheave member facing the second conical-faced surface of the second sheave portion. The second central hub moving axially within the first central hub based on an amount of torque on the continuous variable clutch. The first sheave member and the second sheave member further forming a central passage to receive an input shaft of a transmission. | 10-31-2013 |
| 20150024882 | Driven Clutch with Engine Braking for a Continuously Variable Transmission - A driven clutch for continuously variable transmission for a vehicle, the driven clutch permitting engine braking. The clutch includes an output shaft with first and second sheaves. The first sheave is substantially inhibited from moving axially along the output shaft but may be relatively unrestrained rotationally. The second sheave is axially and rotationally movable with respect to the shaft. A slot is formed in the output shaft and adapted to engage with second sheave for providing torque transmission between the second sheave and the output shall. A compression spring is disposed between the helix and the second sheave for biasing the second sheave toward the first sheave. | 01-22-2015 |
