Class / Patent application number | Description | Number of patent applications / Date published |
074333000 | Combined gear and clutch | 29 |
20090013809 | Manual Helical Planetary Transmission and Power Divider for Motor Vehicles Comprising Said Transmission - A manual helical planetary transmission comprises a housing, a sun gear, a planet carrier with helical planetary gears and an axially displaceable ring gear which can be coupled to the housing or to the planet carrier. The transmission provides a compact and easy-to-produce solution for locking the gears. For this purpose, first saw-tooth coupling teeth are provided on both sides of the fronts of the ring gear and have a gently sloping first profile. Second saw-tooth coupling teeth provided on the housing and the planet carrier have a gently sloping profile and fit into the first coupling teeth. In the respective gear, the peripheral forces acting upon the ring gear force the gently sloping first profiles of the first coupling teeth against the gently sloping first profiles of the second coupling teeth on the housing or the planet carrier, thereby frictionally keeping the ring gear in the respective engaged position. | 01-15-2009 |
20090064810 | TRANSMISSION AND VARIABLE RADIALLY EXPANDING SPRING CLUTCH ASSEMBLY - A transmission generally includes a shaft member having a continuous cylindrical surface portion longitudinally disposed next to a cylindrical outer surface portion interrupted by longitudinal grooves. A first gear assembly has a first clutch spring that holds a first set of rolling members between lobes that extend from a first output gear. A second gear assembly has a second clutch spring that holds a second set of rolling members between lobes that extend from a second output gear. The first gear assembly and the second gear assembly are configured to move longitudinally along the shaft member to a position where at least one of the first gear assembly and the second gear assembly is engaged for rotation with the shaft member when a value of torque at the shaft member is below a torque threshold value. | 03-12-2009 |
20090078070 | METHOD OF CONTROLLING A VEHICLE TRANSMISSION - A method of controlling a vehicle transmission, the vehicle transmission including a power shift gearbox, the power shift gearbox having a power shift input shaft, a power shift output shaft, power shift input gearing and power shift output gearing, and a plurality of power shift clutches to drivingly connect the power shift input gearing and the power shift output gearing, and a master clutch operable to connect the power shift input shaft to a prime mover, the method comprising the steps of, disengaging the master clutch, and engaging at least two of the power shift clutches. | 03-26-2009 |
20090078071 | TRANSMISSION - Provided is a transmission in which gears of a first-speed to a seventh-speed shift stages are relatively rotatably supported on an outer circumference of a rotational shaft with clutch mechanisms. A desired shift stage is achieved by selectively engaging or disengaging the clutch mechanisms by moving, in an axial direction, the slide cam disposed inside the rotational shaft. While the slide cam is formed into a cylindrical shape, a cylinder, as an actuator, is disposed in a space inside the cylindrical slide cam. Oil chambers are formed inside the cylinder respectively to sandwich a piston therebetween. Oil pressure is supplied to the oil chambers to move the slide cam in the axial direction. The provided transmission with such a configuration has a smaller size than a transmission with the actuator disposed outside the slide cam. | 03-26-2009 |
20100199793 | SYNCHRONIZED GEAR SHIFT SYSTEM - A mechanism with an inner race, which has cams, an outer race and rollers between the cams and the outer race. The inner race has a first notch while the outer race has a second notch with a narrow portion and a wider portion. A member is disposed in the first and second notches. Positioning of the member in the first notch and the narrow portion of the second notch inhibits relative rotation between the inner and outer races and power is not transmitted between the outer race and a power transmitting member, such as a gear. Positioning of the member in the first notch and the wider portion of the second notch permits some relative rotation between the inner and outer races to cause the cams to urge the rollers outwardly so that the outer race frictionally engages the power transmitting member to facilitate transmission of rotary power therebetween. | 08-12-2010 |
20100206109 | Drive Device - A driving device for the rotary or pivoting drive of a constructional unit about an axis of rotation with an electric motor which has a driving pinion which is arranged on a drive shaft and by means of which, via a gearing arrangement, a driven shaft running perpendicularly to the drive shaft can be rotatably driven, the rotational movement of which driven shaft can be transmitted to the axis of rotation of the constructional unit. The gearing arrangement has a crown wheel gearing which can be driven rotatably by the driving pinion of the drive shaft, and a cycloid gearing which is connected downstream of the crown wheel gearing and by means of which the driven shaft can be driven rotatably. | 08-19-2010 |
20100218630 | ARRANGEMENT STRUCTURE OF SHIFTING ACTUATOR OF INTERNAL COMBUSTION ENGINE MOUNTED ON MOTORCYCLE - An arrangement structure of a shifting actuator of an internal combustion engine mounted on a motorcycle is provided in which while the shifting actuator is provided externally of an engine case of the engine so as not to interfere with auxiliaries, it is protected without external protrusion and external appearance is kept satisfactory. An external wall of an engine case is partially inwardly recessed to form a recessed portion capable of accommodating a shifting actuator. An actuator body of the shifting actuator is disposed in the recessed portion. An attachment bracket attached to an end portion of the actuator body is fitted to a first fitting hole of an engine case outer lateral wall on the side of the recessed portion and is secured to the engine case outer wall. The motorcycle has a multistage transmission that can reduce its axial width to achieve compactness. | 09-02-2010 |
20100251842 | GEAR-DRIVEN ASSEMBLY OF TRANSMISSION GEAR SHIFTING - Disclosed is a gear-driven assembly of transmission gear shifting. The gear-driven assembly comprises: a plurality of driven bevel gears engaging with the driving bevel gears of the gear-driving assembly, respectively; a driven shaft formed with at least one slit in an outer peripheral surface thereof in a longitudinal direction thereof, and having at least one ratchet installation section along an extension line of the slit; a sliding member inserted into the slit to slide to the ratchet installation section in a longitudinal direction of the ratchet installation section; and a plurality of ratchets installed between the ratchet installation section of the driven shaft and a coupling groove of the driven bevel gear such that the ratchets have elastic restoring force, in which the ratchets entirely or partially engage with the coupling groove by performing rotation as the ratchets make contact with the sliding member. Further, each driven bevel gear is coupled with the driven shaft and is formed with the coupling groove in an inner peripheral surface thereof. | 10-07-2010 |
20100300226 | Transmission and Variable Radially Expanding Spring Clutch Assembly - A transmission generally includes a shaft member having a continuous cylindrical surface portion longitudinally disposed next to a cylindrical outer surface portion interrupted by longitudinal grooves. A first gear assembly has a first clutch spring that holds a first set of rolling members between lobes that extend from a first output gear. A second gear assembly has a second clutch spring that holds a second set of rolling members between lobes that extend from a second output gear. The first gear assembly and the second gear assembly are configured to move longitudinally along the shaft member to a position where at least one of the first gear assembly and the second gear assembly is engaged for rotation with the shaft member when a value of torque at the shaft member is below a torque threshold value. | 12-02-2010 |
20100319474 | TRANSMISSION AND VARIABLE RADIALLY EXPANDING SPRING CLUTCH ASSEMBLY - A transmission generally includes a shaft member having a continuous cylindrical surface portion longitudinally disposed next to a cylindrical outer surface portion interrupted by longitudinal grooves. A first gear assembly has a first clutch spring that holds a first set of rolling members between lobes that extend from a first output gear. A second gear assembly has a second clutch spring that holds a second set of rolling members between lobes that extend from a second output gear. The first gear assembly and the second gear assembly are configured to move longitudinally along the shaft member to a position where at least one of the first gear assembly and the second gear assembly is engaged for rotation with the shaft member when a value of torque at the shaft member is below a torque threshold value. | 12-23-2010 |
20110072923 | MULTIGROUP TRANSMISSION OF A MOTOR VEHICLE - A multi-group transmission of a vehicle having a motor connected to an input shaft of the transmission, via a starting element, and the transmission comprises a splitter group, a main group and a main transmission shaft, on the drive output side. A powershift unit can couple the input shaft to the main transmission shaft for engaging an intermediate gear during a gearshift. The powershift unit and a shifting device for engaging gear constants of the splitter group are an integrated unit. During operating the transmission, with the starting element at least partly engaged during intermediate gear engagement, the powershift unit operates in a slipping mode and supports torque of the motor at the main transmission shaft while rotation of the motor is synchronized with a target gear. After which, an original gear is disengaged while free from load, the target gear is engaged when synchronized, and the intermediate gear is again disengaged. | 03-31-2011 |
20110113910 | PORTABLE ELECTRIC GENERATOR - A portable electric generator that can be applied to a portable electronic device is provided. The portable electric generator includes a case defining a receiving space, a wheel member rotatably coupled to the case, a driving gear coupled to the wheel member or a shaft of the wheel member, a first one-way rotational gear rotating by a torque transmitted from the driving gear, a second one-way rotational gear rotating by the torque transmitted from the driving gear, a direction change gear rotating by a torque from the second one-way rotational gear, a power transmission gear receiving a torque of the first one-way rotational gear and a torque of the direction change gear, and a generator unit for generating electricity by receiving a torque from the power transmission gear. | 05-19-2011 |
20120011952 | ANGLE DRIVE ASSEMBLY - The disclosure relates to an angle drive arrangement for a drive train of a motor vehicle having a permanently drivable first drive axle and a switchable second drive axle. The angle drive arrangement comprises an input shaft and a shift clutch. The input shaft can be driven in rotation about a first rotational axis. The shift clutch is arranged coaxially with respect to the first rotational axis and which has a clutch input part and a clutch output part which can be coupled to one another in order to transmit a torque. The angel drive arrangement further includes an angle gearing with a crown gear, which is arranged coaxially with respect to the first rotational axis, and a pinion, which is mounted so as to be rotatable about a second rotational axis and which is in meshing engagement with the crown gear. The second rotational axis is arranged at right angles to the first rotational axis; wherein the crown gear is fixedly connected to an intermediate shaft which is mounted in a housing by first and second bearing mechanisms so as to be rotatable about the first rotational axis. The first and second bearing mechanisms are arranged on the same side in relation to the second rotational axis. | 01-19-2012 |
20120067146 | POWER UNIT FOR VEHICLE - A power unit for a vehicle includes first and second clutches, that transmit/interrupt rotary power from a primary reduction gear mechanism to first and second main shafts, arranged at respective ends of the first and second main shafts with selectively established multispeed gears provided among a countershaft, and the first and second main shafts. The primary reduction gear mechanism includes: a single driving gear provided on a crankshaft; a first driven gear supported by a first main shaft for relative rotation therewith at a position adjacent to the first clutch and meshes with the driving gear; an intermediate driving gear rotating with the first driven gear; an idle gear that meshes with the intermediate driving gear, and supported by the countershaft for relative rotation therewith; and a second driven gear, that meshes with the idle gear, and supported by the second main shaft for relative rotation therewith. | 03-22-2012 |
20120090416 | MICRO-ELECTRO-MECHANICAL-SYSTEMS BASED HYDRAULIC CONTROL SYSTEM FOR A WET DUAL CLUTCH TRANSMISSION - A wet dual clutch transmission includes at least one hydraulic component and a pilot valve operably connected to the hydraulic component to actuate the hydraulic component. The pilot valve includes a Micro-Electro-Mechanical Systems (MEMS) based pressure differential actuator valve. The hydraulic component may include but is not limited to a first clutch and a second clutch of the wet dual clutch transmission, a lube regulator valve, an on/off solenoid, a synchronizing shift fork or a line pressure control valve. | 04-19-2012 |
20120096965 | TRANSMISSION DEVICE BETWEEN AN INPUT DRIVE SHAFT AND AN OUTPUT SHAFT, SUCH AS THE SHAFT FOR DRIVING THE WHEELS OF A TRAVELLING MACHINE - Transmission device between an input drive shaft and an output shaft, of the type including a housing inside which are placed at least partially a reduction gear mechanism and a progressive cone clutch mechanism, the reduction gear mechanism including a driving member engaged with a driven member, formed by a gearwheel mounted so as to rotate freely on the output shaft and able to be coupled to/uncoupled from the output shaft via two friction cones of the clutch mechanism, the cones being placed coaxial to the axial bore of the gearwheel and capable of coming, under the action of a control device, into bearing contact with a conical bearing surface of the gearwheel. The conical bearing surfaces of the gearwheel are, relative to the axis of rotation of the gearwheel, offset axially from the gear teeth of the gearwheel and are placed on the same side of the gear teeth. | 04-26-2012 |
20120152046 | MULTISTAGE TRANSMISSION - A gear with an annular member disposed alongside a side wall of an inward protrusion in a manner turnable relative to the side wall. The annular member is formed with abutment projections with inclined surfaces extending in circumferential directions and engaged by engaging pawls. The annular member is urged by return springs in such a manner that the portion of each abutment projection, at least other than the inclined surfaces, overlaps each engaging projection as viewed in axial direction. Each inclined surface of the abutment projection is made up of a bottom-side inclined surface having an inclination angle allowing abutment by the engaging pawls, and a top-side inclined surface having an inclination angle not allowing abutment by the engaging pawls but causing sliding movement of the engaging pawls. The engaging pawls are prevented be imposed with excessive local load when the engaging pawls engage the engaging projections of the gear. | 06-21-2012 |
20120240701 | TRANSMISSION DEVICE FOR TWO-WHEELED MOTOR VEHICLE - A transmission for motorcycle which has an input shaft ( | 09-27-2012 |
20120255382 | SHIFTING DEVICE FOR A GEARBOX - A shifting device for a gearbox which has at least one sliding sleeve that is placed on a transmission shaft in a rotationally fixed and axially movable manner. One idler gear, which is rotationally supported on the transmission shaft, is located at on one side adjacent the sleeve. The sliding sleeve can be axially moved, by an actuating element, from a neutral position into a shifting position toward the idler gear, and upon reaching the shifting position, couples the idler gear with the transmission shaft. The associated actuating elements are arranged in a stationary manner and, upon actuation, engage with at least one shifting groove, provided on an outside diameter of the at least one sliding sleeve and has a curve-shaped path, in the axial direction, so that rotation of the transmission shaft axially shifts the sliding sleeve according to the further path of the shifting groove. | 10-11-2012 |
20120279334 | DEVICE FOR CHANGING THE TRANSMISSION RATIO BETWEEN A TURBINE SHAFT AND A SHAFT OF A STARTER-GENERATOR OF AN AEROENGINE - A device for changing a transmission ratio between a turbine shaft and a shaft of a starter-generator of an aeroengine, the device including: first and second fixed gear wheels carried by the shaft of the starter-generator; first and second idler gearwheels carried by the turbine shaft, and meshing respectively with the first and second fixed gearwheels to define different gear ratios; a changeover sleeve interposed between the idler gearwheels and mechanically coupled to the turbine shaft, the changeover sleeve being movable in translation on the turbine shaft between two coupling positions; and a mechanism causing the changeover sleeve to move in translation automatically from either one of its coupling positions to the other one when the sum of torques between the turbine shaft and the starter-generator shaft changes sign. | 11-08-2012 |
20130036848 | Vehicle Transmissions - There is provided a vehicle transmission including a transmission input, a transmission output, and a main shaft and a countershaft, which together form a plurality of transmission ratios for providing different gears, wherein the countershaft can be shifted by means of at least one or at least two parallel gear ratios that are optionally shiftable in drive connection with the transmission input. The vehicle transmission further includes a range change transmission, comprising at least two range-change unit transmissions that are different from one another, by means of which the main shaft can be shifted optionally into a drive connection with the transmission output, wherein a performance interface for connecting an electric motor is provided in direction of the propulsion power flow from the transmission input to the transmission output downstream of the countershaft and upstream of the range change transmission. | 02-14-2013 |
20140290404 | PROCEDURE FOR ENGAGING A FORM-LOCKING SHIFT ELEMENT TO REALIZE A GEAR IN AN AUTOMATIC TRANSMISSION, WHEREAT AT LEAST ONE FURTHER FRICTION SHIFT ELEMENT IS TO BE ENGAGED TO REALIZE THE GEAR TO BE ACTIVATED - A method of engaging a form-interlocking shifting element to obtain a gear in an automatic transmission in which at least one further, frictional shifting element is involved in obtaining the gear to be engaged and a shifting element, not involved in obtaining the gear to be engaged but which serves as a synchronizing shifting element, is actuated in order to synchronize the interlocking shifting element to be engaged. The further, frictional shifting element, involved in engaging the gear, is engaged and then disengaged, to a defined extent, to bring the frictional shifting element to a slipping condition, in order to ensure the engagement of the interlocking shifting element. | 10-02-2014 |
20150040706 | DUAL CLUTCH TYPE POWER TRANSMISSION WITH ALTERNATIVE TORQUE TRANSMISSION PATH PROVIDING ALTERNATIVE RATIOS - A dual clutch type transmission has first and second sections which respectively include first and second clutches. The clutches may be operated to allow torque transfer from an input to an output by way of the first section or the second section. One or more additional gear ratios is provided by a torque transfer pathway connecting the first and second sections such that torque is delivered from the input to the output by way of one or more stages of the first section and one or more stages of the second section. The additional gear ratios may comprise extra low gear ratios. Some embodiments provide transmissions suitable for driving pumps for use in hydraulic fracturing of geological formations. | 02-12-2015 |
20150128737 | SHIFT ACTUATOR - A shift actuator of the present invention includes a first and a second fluid pressure chamber providing fluid pressure to each of a first and a second piston, a hydraulic control device for regulating pressure of hydraulic oil discharged from a hydraulic source and supplying the same, a first and a second oil passage communicated from the hydraulic control device to each of the first and the second fluid pressure chamber, a first and a second connecting portion for connecting the first oil passage with the first fluid pressure chamber and the second oil passage with the second fluid pressure chamber, and a first and a second orifice portion having a diameter smaller than the inner diameter of the first and the second oil passage provided to each of the first and the second connecting portion. | 05-14-2015 |
20150135872 | IMPACT SWITCHING DEVICE OF AN IMPACT DRILL GEARBOX - An impact switching device of an impact drill gearbox includes a gearbox front shell, an output shaft, a torque regulating mechanism, an impact mechanism, a decelerating mechanism and a gear shifting mechanism. The gearbox front shell on its top is prominently mounted with threaded columns. The gear shifting mechanism includes a function switching loop, a circular adjustment screw, a gear shifting gasket and stop posts. The adjustment screw is in thread connection to the threaded columns. The stop posts are connected to the gearbox front shell. The lower ends of the stop posts are connected with the decelerating mechanism. The gear shifting gasket is slidingly connected to the gearbox front shell along the vertical direction. The upper end face of the gear shifting gasket is prominently provided with position-limiting bosses. | 05-21-2015 |
20150377352 | ACTUATION DEVICE FOR A MOTOR VEHICLE - An actuation device for a motor vehicle having a transmission with gear steps and a friction clutch for automated actuation of both the transmission and the friction clutch, where the actuation device has an actuator device with whose help both a rotational movement and a translational movement is executable, in order to improve the actuation device in terms of construction and/or function. | 12-31-2015 |
20160040726 | CLUTCH MECHANISM AND TRANSMISSION - Under the condition that the rotation speed of a first rotating shaft is higher than that of a second rotating shaft, supported portions go through right-handed helical flutes to perform an engaging operation. Under the condition that the rotation speed of the first rotating shaft is lower than that of the second rotating shaft, the supported portions go through left-handed helical flutes to perform the engaging operation. In a releasing operation, the supported portions go through the right-handed helical flutes to release a clutch mechanism under the condition that the rotation speed of the first rotating shaft is lower than that of the second rotating shaft, and the supported portions go through the left-handed helical flutes to release the clutch mechanism under the condition that the rotation speed of the first rotating shaft is higher than that of the second rotating shaft. | 02-11-2016 |
20160138661 | SYNCHRONIZATION DEVICE FOR MANUAL TRANSMISSION OF VEHICLE - A synchronization device for a manual transmission of a vehicle, including a synchronizer ring configured to synchronize rotation of a transmission gear and clutch hub. The synchronizer ring includes: a ring body having an annular shape; an axial protruding portion protruding from the ring body toward the clutch hub in an axial direction to set a size of an axial clearance between the ring body and the clutch hub; and a radial protruding portion protruding from the ring body toward the clutch hub in a radial direction intersecting the axial direction to set a size of a radial clearance to be formed between the ring body and the clutch hub. The ring body, the axial protruding portion, and the radial protruding portion are formed integrally by metal stamping. | 05-19-2016 |
074334000 | Preselector | 1 |
20090025497 | ALL-TERRAIN VEHICLE GEAR-SHIFTING SAFETY DEVICE - A gear-shifting safety device is provided for an all-terrain vehicle (ATV), including a gear lever, a gear-shifting hub shaft, a gear-shifting gear set, and a reversing bar. An end of the gear-shifting hub forms a step on which a block is provided. The block and the step form a stop face therebetween. The reversing bar has an end forming a stop section that is positionable on the step and is selectively in abutting engagement with the stop face so that to change to the reversing position, the reversing bar must be first actuated to disengage the stop section thereof from the stop face, allowing the switching fork to move to the reversing position on a position chute of the gear-shifting hub, thereby eliminating the damage of accidentally switching to reversing during the forward movement of the vehicle. | 01-29-2009 |