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Class 192/3.61 - Stepped ratio transmission


Subclass of Class 192 - Clutches and power-stop control
Definition: Device wherein the multi-ratio motion transmitting mechanism
No. of patents: 55
Last issue date: 03/11/2008


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NumberTitleIssue Date
7343619Trusted flow and operation control method
The objective of this invention is to ensure that programs that generate and send data packets are well behaved. This invention discloses a method and system that consist of an end station and a network interface, such that, the network interface is capable of deter...
03/11/2008
7326149Converterless transmission shift control system
A converterless, multiple-ratio transmission and shift control method wherein smoothness of power-on upshifts and downshifts and power-off upshifts and downshifts is achieved by closed loop control of slip speed and friction element actuating pressure for an oncomin...
02/05/2008
7314427Driving force transmission apparatus
A driving force transmission apparatus is provided for a twin clutch transmission with two clutches, that are controlled a gear change control without a torque cutting out to reduce slapping sounds of the gears by performing a pre-shift operation before the gear shi...
01/01/2008
7311187Dual clutch transmission clutch cooling circuit
A hydraulic circuit for controlling the application of pressurized cooling fluid to the clutches of a dual clutch transmission including a cooling unit in fluid communication with a source of the pressurized cooling fluid and adapted to exchange heat from the coolin...
12/25/2007
7273207Bi-directional winch
A winch includes a first cable reel and a second cable reel. A driveshaft rotates the first cable reel and the second cable reel. The driveshaft is moveable along an axis of rotation between a first position and a second position. The driveshaft operationally engage...
09/25/2007
7252621Transmission having plural clutches
A transmission having plural clutches includes a first clutch for connecting and disconnecting transmission of driving force to a first input shaft including a driving gear configured to be engaged with a driven gear provided at an output shaft of the transmission d...
08/07/2007
7225907Hydraulic pressure control system
A hydraulic pressure control system for an automatic transmission is comprised of an engagement element engaged when the vehicle runs and a first engagement control actuator controlling the engagement element by supplying the controlled hydraulic pressure to the eng...
06/05/2007
7171867Multi-clutch system with blended output system for powertrain transmissions
A transmission system is provided utilizing multiple sets of clutch friction elements, each engaged to transfer torque from a torque input, such as an engine, to different gear ratios. The sets of clutch friction elements are operated simultaneously to provide a ble...
02/06/2007
7165662Mobile vehicle comprising a friction clutch and an inch pedal
A mobile vehicle comprising a shiftable transmission with fixed gear ratio steps and a controllable friction clutch contains a distance sensor, which is connected to an inch pedal and in which the starting position and the end position of the inch pedal are adjusted...
01/23/2007
7155993Dual clutch transmission having a synchronizer actuation interlock circuit
A dual clutch transmission for a motor vehicle having a synchronizer actuation interlock system includes two input shafts, a counter shaft, and a plurality of gear sets rotatively disposed on the shafts. The gear sets are adapted to be operatively engaged to and dis...
01/02/2007
7151989Twin-clutch gearbox and method for shifting an initial gear upwards into a target gear in the twin-clutch gearbox of a motor vehicle
The invention relates to a method for shifting an initial gear upwards into a target gear in a twin-clutch gearbox of a motor vehicle. According to the invention, the engine torque (MMotor) of the vehicle is altered when a target gear is selected incorrec...
12/19/2006
7127961Integrated control module for a dual clutch transmission
An integrated control module for a dual clutch transmission that includes a valve body having an inlet, a plurality of outlets with a plurality of internal hydraulic passages disposed therebetween, and a hydraulic control assembly mounted to the valve body. The hydr...
10/31/2006
7107798Drive mechanism for an automatic washer
A drive mechanism for a vertical axis automatic washer. The washer has a rotatable wash basket, a rotatable agitator concentrically mounted in the wash basket and a drive motor. The drive mechanism includes a first drive shaft driven by the motor at a first rotation...
09/19/2006
7086989Control method for shifting a powershift transmission
In a transmission during a shifting process while torque is transferred from a power-outputting clutch, which is initially in the adhered state, to a power-receiving clutch, which is initially open, the power-receiving clutch increases torque capacity in a slip regi...
08/08/2006
7073407Integrated control module for use in a dual clutch transmission having integrated shift actuator position sensors
An integrated control module for a dual clutch transmission having an integrated shift actuator position sensor assembly that includes a valve body having a plurality of raised portions juxtaposed to each other with a plurality of shift actuator bores piston bores f...
07/11/2006
7056264Method and device for controlling gear ratio change in a transmission contained in the drive train of a motor vehicle with gears that can be shifted under power
In a parallel manual transmission, an upshifting under power is executed based upon preset operating conditions, for example with a fully depressed accelerator pedal, without an electronically controlled, load-reducing ignition retard. When shifting to a higher gear...
06/06/2006
7008344Control apparatus for controlling a shift operation in an automatic transmission
A control apparatus for controlling a shift operation in an automatic transmission includes a disengaging side controlling device for performing a feedback control so as to substantially match a slip amount calculated by a slip amount calculating device with a targe...
03/07/2006
6953417Method for controlling a dual clutch transmission
A method of controlling the hydraulic actuation of the clutches and the synchronizers in a dual clutch transmission in the event of a clutch or synchronizer fault. The method includes the steps of determining which clutch is faulted when a clutch-on fault is detecte...
10/11/2005
6945376Foot operated motorcycle clutch
A mechanism to retrofit modern motorcycles with a foot operated clutch or to be installed as original equipment is disclosed. The mechanism has an escapement mechanism, such as a pawl and ratchet, for holding the clutch in disengaged condition when a rider applies p...
09/20/2005
6909955Method of controlling a dual clutch transmission
A method of controlling the timing of the shift events of a dual clutch transmission that includes the steps of sensing the current output speed of the transmission, determining the time required to complete each possible shift event within the transmission, and det...
06/21/2005
6889805Clutch hydraulic mechanism
A check valve is installed in a hydraulic line for hydraulic oil to be fed to a forward movement hydraulic clutch, while an accumulator for accumulating some amount of the hydraulic oil fed to the hydraulic clutch is installed between the check valve and the hydraul...
05/10/2005
6871734Motor vehicle with overspeed protector for the prime mover
The invention pertains to a motor vehicle with overspeed protector. The clutch in the power train of the motor vehicle can be operated in dependency upon the engine speed in such a way that it is disengaged or operates with slip when the engine speed exceeds a prese...
03/29/2005
6872164Clutch braking in a multi-speed transmission
An apparatus for clutch braking in a multi-speed transmission comprising a prime mover, a transmission system, an output shaft and a torque converter. The transmission comprises a first stage and a second stage wherein the first stage comprises at least two range cl...
03/29/2005
6769523Clutch control for overcoming tooth butt
A strategy for overcoming a tooth butt condition includes changing a target closed clutch position over time. When a tooth butt condition exists, a controller selectively closes a clutch to provide limited engagement between the engine and the transmission. A first ...
08/03/2004
6745878Transmission clutch interlock
An interlock mechanism is provided for a transmission system having a gear unit with a plurality of selectable gear ratios. A manually operated clutch control pedal is manually movable from a clutch engaged position to a clutch disengaged position. The transmission ...
06/08/2004
6742639Control apparatus for controlling a shift operation in an automatic transmission
A control apparatus for controlling a shift operation sets an output Mout from a reference model M(s), which is ideally changed, as a target slip amount of a feedback controller Cpi(s). The controller Cpi(s) controls torque transmitted to an off-going friction engag...
06/01/2004
6732601Control apparatus of an automated manual transmission
A control apparatus of an automated manual transmission includes an input shaft provided with a plurality of drive gears, an output shaft provided with a plurality of driven gears engaged with the drive gears, and a reverse idler gear engaging with gears for backwar...
05/11/2004
6719109Method for controlling a bi-directional clutch
A method for the control of a bi-directional overrunning clutch assembly (10) disposed within a vehicle transmission, including the steps of initiating a drive function control routine (112) within an electronic control unit and sensing the commanded g...
04/13/2004
6679362Actuator device for a clutch device
A clutch-actuator device is equipped with a position-detecting device for detecting at least one of the different possible positions of engagement, disengagement and partial engagement of a clutch that serves to control the amounts of torque being transmi...
01/20/2004
6647333Method of regulating the position of a clutch actuator
A method of regulating the position of a clutch actuator in a vehicle employs the concept of adapting the servo-loop parameters of a position controller of the clutch to different operating conditions of the vehicle, as well as the concept of applying and...
11/11/2003
6454067Method and device for controlling and regulating a coupling
A method and device for a coupling (2) in a motor vehicle, transmission (1) are proposed in which the coupling is controlled and regulated during three operational states via a first regulating circuit (3). The regulated quantity corresponds to the actual...
09/24/2002
6443275Power transmission apparatus for a vehicle
In a power transmission apparatus for a vehicle having a gear transmission capable of transmitting power from a crankshaft of an engine to driving wheels by selectively establishing a plurality of shift stages of gear trains and a clutch for cutting power...
09/03/2002
6188943Integrated control system for electronically-controlled engine and automatic transmission
An integrated control system for both an electronically-controlled engine and a steplessly variable automatic transmission, comprises a speed-change ratio arithmetic processing section for calculating the speed-change ratio as a ratio of the transmission ...
02/13/2001
6035984Automatic clutch
This invention relates to an automatically controlled clutch in a motor vehicle drive train. Rotational speed differences between the clutch input and the clutch output are determined by a computer from rotational speeds of the vehicle engine, on the one ...
03/14/2000
6015031Actuating drive with valve units for actuating a friction clutch and an automated shift transmission
An actuating drive for actuating a friction clutch and an automated shift transmission, having valve units which enable a switching operation, on the one hand, of the friction clutch, and on the other hand, of the shift transmission. It is possible for a ...
01/18/2000
6003649Method and apparatus for actuating a transmission
The present invention proposes a power train and the operation thereof, suitable for automated actuation of a transmission shiftable between a plurality of gears with a torque transmitting system being actuated automatically at least during a gear change,...
12/21/1999
5967252Push button actuation system for ATV transmission
A push-button actuated system for an ATV transmission such as those used on a Honda 300 where a DC motor is connected to a cable linkage, which in turn is connected to the gear change pedal now used to upshift and downshift gears of a semi-automatic trans...
10/19/1999
5964680Power train for a motor vehicle
An automated clutch between the engine and the variable-speed transmission in the power train of a motor vehicle is operated by a control unit which receives signals from several circuits and/or sensors via one or more conductors. The control unit shifts ...
10/12/1999
5950781Method for shifting a twin-clutch transmission and twin-clutch transmission arrangement
A twin-clutch transmission having the driving gear wheels of adjacent gears on different transmission input shafts permits skipping one gear stage while shifting gears, i.e. shifting between gears whose driving gear wheels are on the same transmission inp...
09/14/1999
5950780Method of and apparatus for operating a transmission
The power train of a motor vehicle employs an automated transmission and an automated clutch between the transmission and the combustion engine. The clutch is automatically disengaged prior to, and is automatically reengaged after, each selection of a par...
09/14/1999
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