| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 475127000 |
Pressure regulation
| 21 |
| 475118000 |
Speed responsive control
| 12 |
| 475146000 |
Fluid motor structure
| 6 |
| 475138000 |
With positive clutch or brake | 5 |
| 20100248884 | Transmission for an Electrically Powered Vehicle - A simple, lightweight transmission for use in an electrically powered vehicle is disclosed. The transmission is symmetric in both weight and power distribution, and provides two input-to-output gear ratios, a neutral setting, and a park setting. A single “dog” clutch operates in splined relationship with a first shaft, and a single planetary gear assembly is connected to a second shaft. Sliding the dog clutch among four positions serves to shift the transmission among direct shaft engagement for direct drive, engagement through the planetary gear assembly for overdrive, disengagement for neutral, and double engagement for park. Preferred embodiments include reduction gears in the planetary gear assembly. Other embodiments include a synchronizer so as to synchronize the shaft rotation speeds when they are not exactly matched. Further embodiments include a dual-servo shift mechanism that prevents shifting into park unless a park servo is in its park position. | 09-30-2010 |
| 20120083373 | ARRANGEMENT COMPRISING AT LEAST ONE DOG CLUTCH - An arrangement which comprises at least one claw clutch for the shiftable coupling and decoupling of a shaft ( | 04-05-2012 |
| 20120083374 | ARRANGEMENT COMPRISING AT LEAST ONE DOG CLUTCH - An arrangement which comprises at least one claw clutch that can be connected to at least one component of a transmission, such that the claw clutch is arranged substantially within a bearing support ( | 04-05-2012 |
| 20130017919 | Transfer Case with Planetary Gear Range ShiftingAANM Klemm; LauraAACI Shelby TownshipAAST MIAACO USAAGP Klemm; Laura Shelby Township MI USAANM Gady; RichardAACI Rochester HillsAAST MIAACO USAAGP Gady; Richard Rochester Hills MI USAANM Starna; MatthewAACI New BaltimoreAAST MIAACO USAAGP Starna; Matthew New Baltimore MI USAANM Khoryshev; AlekseyAACI TroyAAST MIAACO USAAGP Khoryshev; Aleksey Troy MI US - A transfer case having a planetary gear set, a clutch collar, and an actuator. The actuator is configured to actuate the clutch collar between a low speed range position in which the clutch collar engages a planet gear carrier of the planetary gear set, and a high speed range position in which the clutch collar engages a sun gear of the planetary gear set. | 01-17-2013 |
| 20150354700 | AUTOMATIC TRANSMISSION - An automatic transmission including a clutch that can engage rotation transmission of two rotary members by supplying an engagement pressure to an engagement hydraulic oil chamber disposed on an outer peripheral side of a central shaft to press and move a piston member to one axial side, and disengage the rotation transmission of the two rotary members with an other-side pressing mechanism that presses and drives the piston member to the other axial side. | 12-10-2015 |
| 475117000 |
Temperature responsive control | 4 |
| 20090118049 | SHIFT CONTROL APPARATUS OF AUTOMATIC TRANSMISSION - A shift control method and apparatus of an automatic transmission for controlling a shift from one speed, achieved by engagement of a first and a second frictional element, to another speed, achieved by engagement of a third and a fourth frictional element. The method includes detecting a rotation speed of a turbine, detecting a rotation speed of at least one operating member of at least one planetary gear set of the automatic transmission, and controlling the shift according to the rotation speeds of the turbine and the operating member. The control includes overlapping a first shift, fromn the one speed to an additional speed, with a second shift, from the additional speed to the other speed. The additional speed has a gear ratio that is near a gear ratio of the one speed. | 05-07-2009 |
| 20090312131 | CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - An automatic transmission includes: a frictional engagement element arranged to be switched from an engagement state to a disengagement state at a switching from a running range to a neutral range, and including: frictional plates; a first piston arranged to push the frictional plates; a second piston arranged to push the frictional plates; a first hydraulic chamber arranged to receive a hydraulic fluid for pushing the first piston; and a second hydraulic chamber arranged to receive a hydraulic fluid for pushing the second piston; a first discharge speed switching section arranged to switch only a discharge speed of the hydraulic fluid of the first hydraulic chamber; and a control unit configured to increase the discharge speed of the hydraulic fluid of the first hydraulic chamber during a predetermined time period by the first discharge speed switching section at the switching from the running range to the neutral range. | 12-17-2009 |
| 20160033032 | OIL PRESSURE CONTROL APPARATUS - Oil pressure is produced by an electrical pump during an engine operation is temporarily stopped according to an idling-stop function and respectively supplied to multiple electromagnetic valves. A command value for a drive current is supplied to each of a driver circuit in order to adjust the oil pressure to be outputted from the corresponding electromagnetic valve. Such adjusted oil pressure is applied to a corresponding gear-change element and an oil-pressure a detecting device detects the oil pressure applied to the gear-change element to obtain detection value for the oil pressure. A current-command characteristic for each of the electromagnetic valves is updated based on the command value of the drive current and the detection value of the oil pressure. | 02-04-2016 |
| 20160076641 | SYSTEM AND METHOD FOR CONTROLLING PUMP PERFORMANCE IN A TRANSMISSION - A hydraulic system of a transmission having a controller and a variable displacement pump. The pump includes an inlet and outlet and is adapted to be driven by a torque-generating mechanism. The system also includes a lube circuit fluidly coupled to the pump. A lube regulator valve is disposed in the lube circuit, such that the lube regulator valve is configured to move between at least a regulated position and an unregulated position. The regulated position corresponds to a regulated pressure in the lube circuit. A pressure switch is fluidly coupled to the lube regulator valve and configured to move between a first position and a second position, where the switch is disposed in electrical communication with the controller. A solenoid is disposed in electrical communication with the controller and is controllably coupled to the pump to alter the displacement of the pump. | 03-17-2016 |
| 475144000 |
Fluid controlled one-way devices | 4 |
| 20090312133 | Compact transmission preventing a vehicle from moving backward on a slope - A compact transmission includes a clutch unit for controlling power transmitted from a bevel gear unit coupled to an output shaft of an engine. The clutch unit includes a subsidiary forward clutch part including friction plates coupled to an inner peripheral surface of an axle housing of the clutch unit; a subsidiary coupling coupled to a backward coupling through a one-way bearing; friction disks coupled to an outer peripheral surface of the subsidiary coupling, the friction plates and the friction disks being arranged alternately; and a piston disposed on one side of the friction plates and the friction disks. When a vehicle moves backwardly on an upward slope, an application of hydraulic pressure to a forward clutch part is interrupted and hydraulic pressure is applied to the subsidiary forward clutch part, so that the piston is moved by the hydraulic pressure to compress the friction plates and the friction disks, thereby fixing the subsidiary coupling to the axle housing. | 12-17-2009 |
| 20100022342 | Front Wheel Drive Automatic Transmission with a Selectable One-Way Clutch - A vehicle includes a front-wheel drive (FWD) transmission having a case, a selectable one-way clutch (SOWC) indexed to the case, pressurized fluid, and a valve body assembly (VBA). The VBA has a piston in communication with the fluid, a return spring, and an actuator plate in continuous contact with or connected to each of the piston and a shift lever of the SOWC. Fluid moving the piston and plate in one direction locks the SOWC to enable a reverse mode, and the spring moves the piston and the plate in another direction to unlock the SOWC in a forward mode. A method prevents spin losses in the FWD transmission by positioning a two-mode SOWC within a case, positioning a VBA adjacently and externally to the case, and admitting pressurized fluid into the VBA to engage the SOWC only during a reverse operating mode. | 01-28-2010 |
| 20120115663 | SELECTABLE ONE-WAY CLUTCH WITH BREAKAWAY FEATURE - A selectable overrunning clutch and breakaway, i.e., energy absorbing, cone clutch is disposed in series between two elements of a planetary gear automatic transmission. An annular piston is received within a complementary cylinder and includes a male cone clutch member that mates with a stationary female cone clutch member. Also carried by the annular piston is an annular drive ring which engages a planetary gear assembly element such as a ring gear. Disposed between the drive ring and the piston is a selection ring having a plurality of circumferential apertures or ports that receive a like plurality of struts. The face of the annular piston includes pockets or recesses that receive the struts and the face of the drive ring includes notches or surfaces against which the struts engage. Tangentially disposed in the annular piston is a small selection piston which rotates the selection ring between two positions to either allow overrunning in one direction between the annular piston and the annular drive ring or lock the two components together. | 05-10-2012 |
| 20120220408 | Mechanism for Controlling a Transmission Component - A transmission latching mechanism includes a component of a transmission gearset, a member secured to and able to rotate with the component, and a piston fixed against rotation and moveable alternately to latch the mechanism, thereby holding the member against rotation and to unlatch the mechanism, thereby releasing the member to rotate. | 08-30-2012 |
| 475136000 |
With ancillary pump or governor drive | 4 |
| 20110124459 | POWER TRANSMISSION APPARATUS - A power transmission apparatus mounted on a vehicle is provided with a motor that transmits power from the motor to an axle through a friction engagement element. The power transmission apparatus is further configured with a mechanical pump that pressure-feeds a fluid to a fluid pressure servo for the friction engagement element, and an electric pump that pressure-feeds the fluid to the fluid pressure servo of the friction engagement element. Furthermore, a lubrication supply passage is configured to connect to a flow passage extending from the electric pump to the fluid pressure servo. A first valve switches between opening and closing the lubrication supply passage such that, during a stop of the motor, so as to supply the fluid to the fluid pressure servo when in a driving position, and to the component to be lubricated when shifted to a neutral position. | 05-26-2011 |
| 20150323063 | HYDRAULIC CONTROL DEVICE - A hydraulic control device includes a C | 11-12-2015 |
| 20080242464 | Electric oil pump control apparatus for vehicle, electric oil pump control method for vehicle, and shift apparatus - When the shift position is changed to the drive position, the amount of oil that is supplied to an automatic shift unit is increased by a larger amount as the standby hydraulic pressure is lower. Therefore, even if the standby hydraulic pressure is decreased, the required hydraulic pressure is more easily achieved when the shift position is changed to the drive position. Therefore, it is possible to decrease the standby hydraulic pressure without slowing down the response to the automatic shift unit to the hydraulic pressure and reducing the useful life of the automatic shift unit. Thus, the amount of electricity consumed by the electric oil pump is reduced. As a result, it is possible to enhance the fuel efficiency. | 10-02-2008 |
| 20120129640 | AUTOMATIC TRANSMISSION GEAR AND CLUTCH ARRANGEMENT - A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members. | 05-24-2012 |
| 475140000 |
Spring engaged, fluid released clutch or brake device | 3 |
| 20100160103 | CLUTCHING METHOD AND MECHANISM FOR ELECTRICALLY VARIABLE TRANSMISSIONS - An electrically variable transmission includes an input member, an output member, two planetary gear sets, two electric motors, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include a rotating clutch and a brake. The rotating clutch and the brake share a common fixed connection. The rotating clutch is released by a stationary actuator that engages a rotatable release plate. The actuator is engaged to release the rotating clutch when the brake is engaged. | 06-24-2010 |
| 20110287884 | PARKING MECHANISM FOR TRANSMISSION - A parking mechanism of a transmission with a planetary gear mechanism for speed changing and outputting the rotation of a driving force source, includes a plurality of friction elements which change a speed ratio of the planetary gear mechanism by being engaged or released; and an engaging unit which engages the friction elements. The engaging unit maintains at least two interlock friction elements, which are engaged to interlock the transmission, out of the plurality of friction elements in engaged states when the operation of the driving force source stops due to a key-off operation. | 11-24-2011 |
| 20160146310 | TRANSMISSION AND WORKING VEHICLE - A first clutch is configured to switch between connection and disconnection of a second carrier and a housing. The first clutch is arranged between a first planetary gear mechanism and a second planetary gear mechanism in the axial direction. A second clutch is arranged between the second planetary gear mechanism and the first planetary gear mechanism in the axial direction. The second clutch has an outer diameter which is smaller than an outer diameter of the first clutch. A first piston is configured so that, by applying pressure to the first clutch, the first clutch is connected. A return spring lines up with the first clutch in the axial direction and is arranged on the outside of the second clutch in the radial direction. The return spring presses the first piston to separate from the first clutch. | 05-26-2016 |
| 475131000 |
Manually actuated ratio selector | 2 |
| 20090258746 | MANUAL VALVE CONTROL FOR MULTI-SPEED PLANETARY TRANSMISSION - A manual valve control for a multi-speed vehicle transmission is provided. Electronic and hydraulic components are provided, including trim valve systems that are multiplexed by a shift valve and a manual valve. The trim valves and shift valve are self-diagnosing via a plurality of multiplexed pressure switches. The control enables single and double range shifts among the multiple forward speed ratios, including shifts to and from sixth and higher forward ratios, reverse and neutral. The control also includes a reduced engine load at stop feature. In addition, a power off/limp home feature provides a plurality of failure modes, including a failure mode for sixth and higher forward speed ratios. | 10-15-2009 |
| 20120094797 | HYDRAULIC CONTROL SYSTEM OF CONTINUOUSLY VARIABLE TRANSMISSION FOR VEHICLE - A hydraulic control system of a continuously variable transmission for a vehicle reduces cost and improves quality reliability by adding switch valve function to a manual valve. The hydraulic control system may control a first brake operated at a first forward speed, a first clutch operated at a second forward speed, and a second brake operated at a reverse speed. The first clutch and the second brake may be operated by operation pressure controlled by a first proportional control solenoid valve and supplied through a manual valve, and the first brake may be operated by operation pressure controlled by a second proportional control solenoid valve, wherein the second proportional control solenoid valve controls hydraulic pressure received from the manual valve to be supplied to the first brake as the operation pressure. | 04-19-2012 |
| 475125000 |
Torque responsive control | 1 |
| 20090247344 | SHIFT CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - Strain gauges and a torque value calculating unit detect a value for torque acting on a sun gear, based on a reaction force. A torque phase detecting unit detects start of a torque phase at which only torque distribution changes while a gear ratio stays at the same level as before upshift, based on a change in the value for torque detected by the strain gauges and the torque value calculating unit. Consequently, when upshifting, an end of a piston stroke can be accurately determined by precisely detecting the torque phase during the shifting. Thus, problems such as burning of friction materials due to excessive heat generation in friction engagement elements can be eliminated. | 10-01-2009 |
| Entries |
| Document | Title | Date |
|---|
| 20090156345 | Speed Changing Transmission Apparatus - A composite planetary transmission section (P) is provided for synthesizing output from a stepless speed changing section ( | 06-18-2009 |
| 20090176612 | Method for Operating an Automatic Gearbox - A method for operating an automatic transmission of a motor vehicle, in particular a variable-speed automatic transmission. The automatic transmission has five shift elements and for transferring torque or force in a forward gear and in a reverse gear at least three of the five shift elements are engaged. In a neutral position of the automatic transmission, to prevent torque or force flow at least one of the shift elements that are engaged in the respective forward or reverse gear is fully disengaged. | 07-09-2009 |
| 20090192002 | AUTOMATIC TRANSMISSION - A second clutch (C | 07-30-2009 |
| 20090215567 | AUTOMATIC TRANSMISSION - An automatic transmission comprises a multi-plate brake to brake a specified rotational element of a transmission mechanism, which includes a plurality of frictional plates, a piston, a piston cylinder member comprising cylinder in which the piston slides, and oil-pressure chambers which are formed between the piston and the cylinder and bias the piston toward the frictional plates with an oil pressure supplied thereto, and a valve body to supply the oil pressure to the oil-pressure chambers. Herein, the valve body is provided in the vicinity of an outer periphery of the piston cylinder member so as to be connected to the piston cylinder member via a connection portion, and there is provided an oil passage to supply the oil pressure from the valve body to the oil-pressure chambers via the connection portion. | 08-27-2009 |
| 20090264237 | Automatic transmission - A first element of a duplex planetary gear set is selectively coupled to an input shaft via a third clutch, or is selectively fixed via a first brake. A second element is selectively coupled, via a second clutch, to an intermediate shaft that is directly coupled to a speed-increasing element of a simplex planetary gear set which increases the rotational speed of the input shaft, or is selectively fixed via a second brake. A third element is directly coupled to an output shaft. A fourth element is selectively coupled to the input shaft via a first clutch. Therefore, by increasing the speed of the rotation of the input shaft by the simplex planetary gear set and transferring it to the duplex planetary gear set, it is possible to reduce the torques on individual components of an automatic transmission and therefore to reduce the sizes of the individual components and the capacities of the individual friction engagement elements. | 10-22-2009 |
| 20090280944 | Speed Change Transmission Apparatus - Disclosed is an apparatus including a stepless speed change device receiving an engine drive; a planetary transmission device for, by a plurality of planetary transmission mechanisms, combining an output from the stepless speed change device and the engine drive not subject to a speed change by the stepless speed change device; and a speed range setting device for outputting the drive combined by the planetary transmission device and divided into a plurality of speed ranges. The planetary transmission device, the speed range setting device and a forward-reverse changeover device are located forwardly of a rear end of an upstream transmission case portion. An electric motor may be used instead of the stepless speed change device. | 11-12-2009 |
| 20100048339 | Triple-axle-drive variable transmission for heavy machinery - The present invention provides a triple-axle-drive multistage transmission for heavy machinery which is provided between a bevel gear unit and a differential gear unit and conducts multistage gear shifting operation, including three forward speeds and two reverse speeds. | 02-25-2010 |
| 20100093477 | HYDRAULIC CLUTCH CONTROL MECHANISM FOR A MULTI-MODE HYBRID TRANSMISSION - An electrically variable transmission (EVT) selectively establishes various EVT modes and a neutral mode. The EVT includes a source of pressurized fluid, fluid-actuated clutches, various solenoid-actuated valves including trim valves and blocking valves adapted to control a flow of pressurized fluid to the clutches to establish the transmission operating modes, and an electronic control unit (ECU). The ECU actuates different combinations of the solenoid-actuated valves to establish the different transmission modes. The solenoid-actuated valves are configured in such a manner as to provide the EVT with one or more default operating modes in the event the ECU temporarily loses electrical power. Depending on the particular configuration, the default modes can be the neutral mode alone, or the neutral mode combined with one or more of the EVT modes, with the EVT modes enabled by providing one or both of the blocking valves with a latching feature. | 04-15-2010 |
| 20100144477 | A Continuous Variable Transmission Assembly - A variable ratio drive assembly ( | 06-10-2010 |
| 20100222173 | AUTOMATIC GEARBOX - The present invention relates to an automatic transmission ( | 09-02-2010 |
| 20100240484 | METHOD AND DEVICE FOR CONTROLLING AN AUTOMATIC TRANSMISSION - The invention relates to a method for controlling an automatic transmission having a torque converter, with the transmission having three gear sets and with the first gear set which has a first brake clutch and a second brake clutch being braked relative to the housing by means of simultaneous actuation of the first and second brake clutches, as a result of which an output shaft which is directly connected to the first gear set is likewise braked. The third gear set is connected in terms of gearing to an input shaft and to the first gear set and can be fixed relative to the housing by means of a third brake clutch. The simultaneous actuation of the first and second brake clutches takes place at least intermittently with the third brake clutch in a slipping state, controlling the speed of the torque converter relative to the engine. | 09-23-2010 |
| 20100279810 | Transmission Clutch Assembly - The present disclosure relates to a piston-actuated clutch assembly for a transmission. Interconnecting members are integrated into a pressure plate of the clutch assembly. The interlocking members are configured to selectively interlock the piston and the pressure plate. The location of the interlocking members reduces wear on the piston and other transmission components. | 11-04-2010 |
| 20100279811 | AUTOMATIC TRANSMISSION GEAR AND CLUTCH ARRANGEMENT - A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members. | 11-04-2010 |
| 20110003660 | DRIVE ARRANGEMENT WITH OPEN LOOP HYDRAULIC MECHANISM OPERABLE AS A PUMP OR A MOTOR - A drive arrangement suitable for driving a final drive comprises a first drive means and a power-splitting gear arrangement. A first hydraulic mechanism is operable either as a pump or a motor. The first hydraulic mechanism is capable of being driven from the first drive means or from the final drive or both concurrently, acting through the gear arrangement. The final drive is drivable through the gear arrangement from the first drive means or the first hydraulic mechanism or both concurrently. | 01-06-2011 |
| 20110009222 | PLANETARY WHEEL END WITH PILOTED SUN GEAR SHAFT - A planetary wheel end assembly includes an axle shaft having an inboard end and an outboard end, a planetary gear assembly receiving driving input from the axle shaft, and a rotational support element that pilots the outboard end of the axle shaft. The planetary gear assembly includes a sun gear that is fixed for rotation with the axle shaft, a plurality of planet gears that are in meshing engagement with the sun gear, a non-rotating ring gear that is in meshing engagement with the planet gears, and a planetary spider that supports the plurality of planet gears. The planetary spider provides driving output to rotate a wheel component. The rotational support element is positioned radially between the outboard end of the axle shaft and planetary spider to allow relative rotation between the planetary spider and the outboard end of the axle shaft. | 01-13-2011 |
| 20110053725 | AUTOMATIC TRANSMISSION GEAR AND CLUTCH ARRANGEMENT - A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members. | 03-03-2011 |
| 20110118072 | MOTOR TRANSMISSION APPARATUS - A motor transmission apparatus is provided between a transmission output shaft coupled to a drive wheel and a motor shaft coupled to a motor/generator. The motor transmission apparatus includes a first power transmission path that is switched to a power transmission condition by a high clutch having a clutch oil chamber, and a second power transmission path that is switched to a power transmission condition by a low brake having a brake oil chamber. Working oil discharged from an oil pump is guided to an oil passage switching valve via an output control valve. The working oil is distributed to one of the clutch oil chamber and the brake oil chamber by the oil passage switching valve, and therefore interlocking, in which the high clutch and the low brake are engaged simultaneously, can be avoided. | 05-19-2011 |
| 20110143876 | AUTOMATIC TRANSMISSION FOR A VEHICLE - A transmission for a vehicle with a clutch and/or a brake which is hydraulically actuated by a cylinder and a piston actuator. A pressure chamber is located between the cylinder and the piston and a hydraulic pressure medium flows into the pressure chamber via an inlet. The pressure medium is supplied to the pressure chamber via a component fixed on the housing, a rotary passage between the fixed component and the rotatable component and then via the rotatable component. The radial distance of the radial middle of the rotary passage is larger than the smallest radial distance and smaller than the largest radial distance of the pressure chamber from the rotation axis of a central shaft of the automatic transmission. The radial arrangement of the rotary passage, between the radially smallest and largest diameters of the pressure chamber, neutralizes centrifugally generated forces on the pressure medium in the pressure chamber. | 06-16-2011 |
| 20110190088 | SELF-CONTAINED HYDRAULIC TORQUE MODULATING DEVICE - A torque modulating coupling device for operatively linking two shafts has a clutch and a piston disposed in a case. The piston selectively applies force to the clutch in response to hydraulic pressure, and a keyed feature adapted to couple with a corresponding keyed feature associated with at least one of the shafts. The coupling device can be formed with two cases that form an enclosure for the clutch and the piston, trapping the piston forces between the cases. This embodiment allows the device to also act as an axle housing cover. In another embodiment, the case is designed to bolt directly to an axle housing cover, trapping piston forces between the case and the cover. | 08-04-2011 |
| 20110275468 | TRANSFER INCORPORATING WET BRAKE - An object of the present invention is to provide a transfer incorporating a wet brake which, for example, enables a gear shaft for a second gear and a sun gear to be supported by two bearings without inconveniences such as an increase in the axial dimension of the transfer. Accordingly, a brake hub ( | 11-10-2011 |
| 20120077634 | FULLY-GEARED CONTINUOUSLY VARIABLE TRANSMISSION - A continuously variable transmission (CVT) responsive to a device for supplying a rotational force. The transmission comprises a planetary gear system that further comprises: a control element, an output element, and an input element caused to rotate responsive to the device for supplying rotational force. The output element is engaged with the control element and the input element. The CVT further comprises a control module comprising a controllable brake connected to the control element for allowing the control element to rotate freely, for stopping the control element and for slowing the control element to a speed between free rotation and stopped. | 03-29-2012 |
| 20120100947 | METHOD AND APPARATUS EFFECTING TORQUE TRANSFER THROUGH A TRANSMISSION DURING ENGINE AUTOSTOP AND AUTOSTART EVENTS - A powertrain system includes an engine coupled via an input member to a transmission to transfer torque to an output member. The engine is configured to execute an autostop event and an autostart event during ongoing powertrain operation. The transmission includes a plurality of planetary gear sets and a plurality of torque transfer clutches. The plurality of torque transfer clutches includes hydraulically-activated clutches and mechanical clutch devices, including an electromechanically-activated selectable one-way clutch. The transmission is configured to provide hydraulic pressure to activate the hydraulically-activated clutches using only a mechanically driven hydraulic pump. The transmission is configured to effect torque transfer among the input member, the plurality of planetary gear sets and the output member in one of a plurality of fixed gear states by selectively activating at least one of the plurality of torque transfer clutches. | 04-26-2012 |
| 20120149519 | TRANSMISSION ASSEMBLY HAVING VARIABLE FORCE CLUTCH - A transmission assembly for a machine is disclosed. The transmission assembly may have a clutch pack, a first pressure chamber, and a second pressure chamber. The transmission assembly may also have a first piston configured to push against the clutch pack when pressurized fluid is directed into the first pressure chamber, and a second piston configured to push against the first piston when pressurized fluid is directed into the first pressure chamber and inhibited from pushing against the first piston when pressurized fluid is directed into the second pressure chamber. | 06-14-2012 |
| 20120178572 | PLANETARY TRANSMISSION WITH LAUNCH CLUTCH - A transmission system is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members a plurality of torque transmitting devices, a launch clutch, and a hydraulic circuit. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes. | 07-12-2012 |
| 20120220406 | Gearset Carrier and Servo Cylinder Assembly - A carrier assembly includes a first plate, a second plate spaced from the first plate and formed with a cylinder, pinions supported on the first and second plates; and a piston located in the cylinder for displacement along an axis of the cylinder. | 08-30-2012 |
| 20120220407 | CLUTCH PISTON SUPPORT - An assembly includes a clutch support formed with multiple cylinders, each cylinder connectable to a source of hydraulic pressure that actuates a clutch, and a planetary gearset including a ring gear driveably connected to the clutch support. | 08-30-2012 |
| 20120322604 | AUTOMATIC TRANSMISSION GEAR AND CLUTCH ARRANGEMENT - A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input member and other coupling members. | 12-20-2012 |
| 20130012349 | GEAR TRAIN UNIT AND ARRANGEMENT FOR A STAMPING PRESS - The invention relates to a gear train unit comprising a plurality of planetary gear train stages, which are connected one after the other and which each comprise a ring gear ( | 01-10-2013 |
| 20130072338 | Hydrodynamic Clutch Device - A wet clutch arrangement includes a housing arrangement which is filled or fillable with fluid, a first friction surface formation which is rotatable with the housing arrangement around an axis of rotation and a second friction surface formation which is rotatable with a driven member around the axis of rotation and which can be brought into frictional engagement with the first friction surface formation by a piston pump. At least a portion of a torsional vibration damping arrangement is provided in a torque transmission path and includes an input region and an output region. The torsional vibration damping arrangement further includes at least in a first torque transmission path a phase shifter arrangement for generating a phase shift of rotational irregularities transmitted via the first torque transmission path relative to rotational irregularities transmitted via a second torque transmission path. | 03-21-2013 |
| 20150141189 | FRICTION ENGAGEMENT DEVICE - In friction engagement device having forward clutch | 05-21-2015 |
| 20150323060 | AUTOMATIC TRANSMISSION - In an automatic transmission including a deceleration planetary gear and a hydraulic clutch, the hydraulic clutch includes a clutch drum, a clutch hub, first and second friction engagement plates, a piston, and an engagement oil chamber defining member. The clutch hub is formed by a ring gear and a support member that rotates together with the ring gear. The piston is movably supported by the clutch hub. The piston and the support member define a cancel oil chamber that cancels a centrifugal oil pressure generated in an engagement oil chamber. | 11-12-2015 |
| 20160033012 | AUTOMATIC TRANSMISSION - An automatic transmission ( | 02-04-2016 |
| 20160069398 | CLUTCH HOUSING AND ASSEMBLY - A clutch assembly includes first, second and third clutches, a housing including a first projection to which the first clutch selectively produces a connection, a second projection to which the second and third clutches selectively produce connections, clutch-apply circuits each circuit corresponding to one of the clutches, and a balance volume circuit for supplying fluid to each of the clutches, and a shaft rotatably supporting the housing. | 03-10-2016 |
| 20160146337 | CARRIER, PLANETARY GEAR MECHANISM, TRANSMISSION, AND WORKING VEHICLE - A carrier is provided with a circular plate section, a cylinder section, a planetary gear arrangement section, a first hydraulic fluid flow path, and a second hydraulic fluid flow path. The cylinder section has a second support section for supporting a support pin for a planetary gear, a first clutch attachment section for attaching to a first clutch, a second clutch attachment section for attaching to a second clutch, and a piston attachment section for attaching to a piston for driving the second clutch. The first hydraulic fluid flow path has a first inlet which is provided in the circular plate section to receive hydraulic fluid to lubricate the first clutch. The second hydraulic fluid flow path has a second inlet which is provided in the circular plate section to receive hydraulic fluid to drive the piston. | 05-26-2016 |
| 20170234410 | AUTOMATIC TRANSMISSION | 08-17-2017 |
