| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074000000 | Automatic | 15 |
| 074336000 | Speed responsive | 13 |
| 20080314175 | Engine synchronizer - Engine synchronization apparatus and system for multi-engine vehicles such as boats and aircraft providing limited authority throttle cable trim effected by an apparatus interposed between the throttle plate and throttle cable of a slave engine and mounted in a floating configuration. An actuator is mounted to the apparatus to trim the distance between the throttle plate and throttle cable attachment thereby trimming the throttle cable. A system is provided in which a difference signal derived from master and slave engine tachometer signals is used to control the actuator and synchronize the engines within a predetermined range. | 12-25-2008 |
| 20090071277 | METHOD FOR SHIFTING ACTUATION OF AN AUTOMATED GROUP TRANSMISSION - A method for shifting an automated transmission situated in a drive train of a motor vehicle between an engine and a drive axle and having at least one multi-speed main transmission and a two-speed range change group rear-mounted thereon. The main transmission has at least one counter shaft with a transmission brake. A clutch engages the prime mover and the main transmission and the range change group is shifted via unsynchronized dog clutches which are combined in pairs in a common shift set and have two shift positions and one neutral position such that, during a range change gear shift both in the main transmission and the range change group a change between two ratio stages occurs. A range change up-shift includes synchronizing the input shaft and the target gear utilizing the transmission brake and passively synchronizing the dog shifted transmission parts by the edge beveling of the concerned dog clutches. | 03-19-2009 |
| 20090095102 | Dual Clutch Transmission - A dual clutch transmission includes a group of odd-numbered speed drive trains, including at least a first speed drive train to be driven for setting a first speed serving as the lowest speed; a first clutch to be engaged for driving any one of the odd-numbered speed drive trains including the first speed drive train; a group of even-numbered speed drive trains, including at least a second speed drive train to be driven for setting a second speed serving as the second lowest speed; a second clutch to be engaged for driving any one of the even-numbered speed drive trains including the second speed drive train; an automatic speed control system for selecting one of all the odd-and-even numbered speed drive trains to be driven, and for selecting either the first or second clutch to be engaged for driving the selected speed drive train in correspondence to a traveling speed of a vehicle equipped with the dual clutch transmission; and a manual selection device for selecting any one of all the odd-and-even numbered speed drive trains, including the second speed drive train and excluding the first speed drive train, as a starting-and-stopping speed drive train to be driven when the vehicle starts and immediately before the vehicle stops. | 04-16-2009 |
| 20090165584 | Dual Clutch Transmission - A dual clutch transmission includes odd-numbered forward traveling speed drive trains to be activated by engaging a first clutch, even-numbered forward traveling speed drive trains to be activated by engaging a second clutch, and a plurality of backward traveling speed drive trains including at least one backward traveling train to be activated by engaging either the first or second clutch. While a reverse mode is set and when a reverser operation means is shifted between a forward traveling position and a backward traveling position, the first and second clutches are alternately engaged/disengaged for a forward/backward traveling speed shift between a backward traveling speed set by at least one backward traveling speed drive train and a forward traveling speed set by any one forward traveling speed drive train activated by engaging the first or second clutch which is different from the first or second clutch adapted to be engaged for activating the at least one backward traveling speed drive train. | 07-02-2009 |
| 20090193919 | Automated shift transmission - In an automated split path transmission with at least six forward speeds and three characteristic transmission steps (s | 08-06-2009 |
| 20090288513 | ARRANGEMENT OF POSITION TRANSMITTERS ON A SELECTOR ROD - An arrangement of position transmitters on a selector rod for automatic speed change transmissions in motor vehicles, which interact with housing-mounted position sensors of an electrical speed detection circuit, at least one selector rod on its end regions being movably supported in cross walls of the housing of the transmissions and being actuated by means of a preferably electrohydraulically controlled speed selection unit where the selector rod projects through a through an opening in a cross wall of the transmission, which wall separates the oil compartment into the gear chamber which holds at least the speed selection unit and the position sensors, and the position transmitters are attached directly to the selector rod such that the selector rod with the position transmitters can be mounted through the through the opening as a mounting unit. | 11-26-2009 |
| 20100024581 | DUAL CLUTCH TRANSMISSION - A dual clutch transmission includes a first and second input shaft, an output shaft, a dual clutch having a first clutch and a second clutch, a first and second gear transmission mechanisms, and a control device connected to an accelerator opening degree sensor, detecting an accelerator opening degree, and a rotational speed sensor, detecting a rotational speed of an engine, and is provided with a pre-shift control device pre-selecting the shift stage gear set for establishing the shift stage, which is one stage upper or lower than the shift stage established by the selected shift stage gear set from one of the first and second gear transmission mechanisms, when values of the accelerator opening degree, the rotational speed, and the rotation acceleration, becomes equal to or more than predetermined upper shift stage pre-shift setting values or equal to or less than predetermined lower shift stage pre-shift setting values. | 02-04-2010 |
| 20120036953 | Gearbox Shifting Point For Producing A Rotationally Fixed Connection Between At Least One Gearwheel And One Shaft - A gearbox shifting point for producing a rotationally fixed connection between at least one gearwheel and one shaft. The gearbox shifting point comprises a shaft, a shifting sleeve and two gearwheels. The two gearwheels are each rotatably mounted in relation to the shaft. The shifting sleeve is mounted in a rotationally secured fashion on the shaft. The shifting sleeve and the gearwheels are embodied in such a way that a positively locking, rotationally fixed connection can be produced between the shifting sleeve and in each case one gearwheel. In order to improve problems with respect to a gearshifting hole or blockage of the gearbox, the shifting sleeve interacts with the two gearwheels in such a way that at least one positively locking, rotationally fixed connection is always produced between the shifting sleeve and one of the gearwheels. | 02-16-2012 |
| 20120103117 | TRANSMISSION DEVICE FOR AN AUXILIARY OR ACCESSORY OF A VARIABLE-SPEED ENGINE, AN ENGINE EQUIPPED THEREWITH AND USES THEREOF - A transmission device mounted between a supercharger compressor and a pulley designed to drive it from the vehicle motor. Two successive modules each capable of a direct engagement ratio through a free wheel, or of an overdrive ratio by locking the planet gear by means of a clutch are clamped by a spring or released by the action of centrifugal counter-weights. The action is at least compensated by the axial thrust of the teeth F | 05-03-2012 |
| 20130152718 | CONTROL DEVICE OF AUTOMATIC TRANSMISSION - An automatic transmission has an automatic shift mode and a manual shift mode. When an opposite manual operation is performed, during an automatic shift based on a shift map in the automatic shift mode, in an opposite direction opposite to the automatic shift or when the opposite manual operation is performed, during a forced shift performed regardless of the manual operation in the manual shift mode, in the opposite direction opposite to the forced shift, a control apparatus forbids a shift based on a first manual operation and permits a shift based on a second or subsequent manual operation in the opposite direction opposite to the automatic shift or the forced shift. | 06-20-2013 |
| 20140033845 | AUTOMATIC TRANSMISSION CONTROL METHOD AND CONTROL APPARATUS, AND AUTOMATIC TRANSMISSION SYSTEM - A method comprises a pre-charge step of pre-charging operating oil; a holding step of holding an operating pressure at an oil pressure less than an oil pressure during the pre-charge, for a given period of time; and a raising step of raising the operating pressure to cause an engagement-side friction element to be engaged. The method further comprises a setting step of setting a pre-charge period in the pre-charge step. The setting step includes predicting a timing at which the engagement-side friction element is to be engaged; actually measuring a timing at which the engagement-side friction element has been actually engaged; and setting the period of the pre-charge step to allow a difference between the timings to become smaller. | 02-06-2014 |
| 20150101431 | SYSTEM AND METHOD FOR PERFORMING SHUTTLE SHIFTS WITH A TRANSMISSION OF A WORK VEHICLE - A method for performing a shuttle shift with a transmission of a work vehicle is disclosed, wherein the transmission includes an input shaft, a counter shaft and a plurality of driven shafts extending generally parallel to the input and counter shafts. The method may include disengaging a clutch associated with a first directional gear of a directional shaft of the plurality of driven shafts. The first directional gear may be configured to rotate the directional shaft in a first direction. Additionally, the method may include engaging clutches associated with at least two gears of at least one secondary driven shaft of the plurality of driven shafts to reduce a rotational speed of the directional shaft and, after the rotational speed of the directional shaft is reduced, engaging a clutch associated with a second directional gear of the directional shaft such that the directional shaft rotates in a second direction. | 04-16-2015 |
| 20160146341 | METHOD OF CONTROLLING A SYNCHRONIZER ACTUATOR FORK OF A TRANSMISSION - A method and system for controlling movement of an actuator fork of a transmission through a pre-synchronization phase of a synchronization event at a pre-synchronization fork velocity includes adjusting the level of fluid pressure applied to an actuator operatively attached to the actuator fork to control the pre-synchronization fork velocity within a predetermined range of a velocity target. The method determines, via a controller, the fork velocity during the pre-synchronization phase of a current synchronization event, compares the determined fork velocity to a velocity target, and adjusts the pressure level of fluid applied to an actuator piston of the actuator to control the velocity of the actuator fork within a predetermined range defined by the velocity target during a subsequent pre-synchronization phase. The velocity target may be defined for a shift type, such as a fast or slow shift, where the shift type is determined by the controller. | 05-26-2016 |
| 074337000 | Torque responsive | 2 |
| 20090038425 | Automated Shift Control Device and Straddle-Type Vehicle Equipped With the Same - An automated shift control device suppresses overload of the shift motor and reduces the time from beginning to completion of a gear shifting operation. A transmission has a plurality of pairs of speed change gears and a gear selecting mechanism. A shift motor drives the gear selecting mechanism. A shift power transmission mechanism transmits power from the shift motor to the gear selecting mechanism. A torque limiter has a third reduction gear and a third shaft forming a part of the shift power transmission mechanism. The torque limiter transmits power from the shift motor as torque. When the transmitted torque is not more than a predetermined limit torque, the third reduction gear co-rotates with the third shaft. When the transmitted torque exceeds the predetermined limit torque, the third reduction gear rotates relative to the third shaft to limit the transmitted torque to the predetermined limit torque or less. | 02-12-2009 |
| 20170234408 | GEARBOX IMPROVEMENTS | 08-17-2017 |
