| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 475160000 | For differential planetary gearing | 31 |
| 20100041505 | AUXILIARY LUBRICATION PUMP FOR CARRIERS - A carrier assembly includes an auxiliary lubrication pump that lubricates gear components positioned within an internal cavity of a carrier housing. A differential gear assembly is positioned within the internal cavity to rotate about an axis. The auxiliary lubrication pump includes a first gear that is driven by the differential gear assembly about the axis and a second gear that is driven by the first gear. The first and second gears of the auxiliary lubrication pump cooperate to direct and control lubrication with the carrier housing. | 02-18-2010 |
| 20100105513 | DIFFERENTIAL LUBRICATION FEED SYSTEM IN A DRIVE AXLE ASSEMBLY - A method for lubricating an axle assembly can include: coupling a pair of tapered roller bearing to opposite ends of a differential housing; placing the differential housing into a carrier housing assembly such that the tapered roller bearings support the differential housing on the carrier housing assembly for rotation about a first axis; collecting a lubricant proximate a side of one of the tapered roller bearings opposite the differential housing; and rotating the differential housing about the first axis to cause the one of the tapered roller bearings to move a portion of the collected lubricant through the differential housing. A related axle assembly is also provided. | 04-29-2010 |
| 20110281680 | Final Drive Comprising A Lubrication System - A final drive comprising a lubrication system is provided. The final drive comprises a differential housing and a reaction plate, wherein the reaction plate is mounted to the differential plate. The final drive also comprises a shaft and a friction disc. The shaft is rotatably disposed with differential housing, and the friction disc, which has a lubrication hole, is mounted about the shaft. The lubrication system comprises a differential supply passage positioned in the differential housing, and it also comprises a plate passage positioned in the reaction plate. The plate passage is in fluid communication with the differential supply passage, and the plate passage is in intermittent fluid communication with the lubrication hole. | 11-17-2011 |
| 20120295751 | DIFFERENTIAL APPARATUS - Differential apparatus capable of guiding and supplying a sufficient amount of lubricant oil to the lubrication elements accommodated in the differential apparatus ( | 11-22-2012 |
| 20080268997 | Lubrication path in a planetary gear unit for a transmission - A planetary gear unit includes a sun gear supported for rotation about an axis and including gear teeth, and a pinion supported for rotation, including pinion teeth engaged with the sun gear teeth and formed with a first passage located between consecutive teeth of the pinion and directed radially toward the engagement of the sun gear and the pinion. | 10-30-2008 |
| 20090186737 | Power transmission apparatus - A power transmission apparatus is capable of easily passing lubricant toward a seal arranged between a higher shat and an opening of a case of the apparatus. The apparatus includes the higher shaft, i.e., a hollow connecting shaft that faces the outside of the transfer case through the opening of the transfer case. The oil seal is arranged between the hollow shaft and the opening of the transfer case. The hollow shaft meshes, through helical spur gears, with an intermediate transferring shaft that is positioned lower than the hollow shaft. A lubricant guide is arranged to receive lubricant splashed up by the ring gear and helical spur gear of the intermediate shaft and guide the received lubricant toward the oil seal and a ball bearin | 07-23-2009 |
| 20090143183 | DIFFERENTIAL GEAR SET IN WHICH LUBRICATION STRUCTURE IS IMPROVED - A differential gear set includes a pinion gear that at least a groove having a inner planar surface, at least a gear is formed in an exterior circumference thereof and at least a pinion shaft in which an end portion is inserted into the groove such that an end surface faces the inner surface of the groove and a planar portion is formed by cutting off in one side of an exterior circumference thereof corresponding to the interior circumference of the groove. | 06-04-2009 |
| 20120142476 | TRANSMISSION SYSTEM - A transmission system includes a housing having a sump. A crown wheel and pinion are positioned within the housing. The transmission system further includes a reservoir having an inlet system and an outlet system. Rotation of the crown wheel causes the oil to be transferred from the sump to the reservoir via the inlet system, and the outlet system allows oil to pass from the reservoir to the sump. | 06-07-2012 |
| 20100144480 | Drive axle assembly with gear mesh lubrication systems for lubricating gear mesh and/or differential bearings - An axle assembly having an axle assembly with first and second sumps for holding a lubricant. A rotating ring gear associated with a differential can rotate through the lubricant in the first sump to cause a portion of the lubricant to cling to the ring gear. A portion of the lubricant that has clung to the ring gear can be removed from the ring gear and transferred to the second sump. The lubricant in the second sump can be drained to lubricate teeth of a pinion that is in meshing engagement with the ring gear and/or to lubricate bearings that support the pinion. A related method is also provided. | 06-10-2010 |
| 20110245010 | VEHICLE TRANSMISSION - A vehicle transmission including a rotatable input shaft connected to a driving source; a countershaft parallel to the input shaft; a differential unit below the countershaft, to which rotation is input from the countershaft, and coupled to right and left wheels; a case member containing the input shaft, countershaft, and the differential unit; a differential chamber disposed in the case member, contains the differential unit, and is separated from an oil storage chamber; and a differential separation member separating the differential chamber from the storage chamber, and formed along the differential unit ring gear, which meshes with an output gear of the countershaft. The differential separation member has an opening so the output gear can mesh with the ring gear, a communication portion, formed in an upper part of the differential separation member, and located on an upstream side of the opening in a rotation direction of the ring gear during forward traveling, discharges oil from the differential chamber, and a wall member on a side of an output gear meshing portion and the ring gear with respect to the communication portion, and contacts the differential separation member outer surface. | 10-06-2011 |
| 20110245009 | POWER TRANSMISSION DEVICE - A vehicle power transmission device including an accumulation portion which accumulates lubricating oil, a pressure pump driven to pump the lubricating oil accumulated in the accumulation portion to the transmission as hydraulic oil, a scooping gear which scoops up the lubricating oil accumulated in the accumulation portion while rotating, a reception and guide portion receiving the lubricating oil scooped up by the scooping gear and guiding it to a predetermined lubrication target, and a leaked hydraulic oil guide portion guiding leaked hydraulic oil, leaked when the hydraulic oil is pumped from the pressure pump, to the reception and guide portion. | 10-06-2011 |
| 20110212805 | METHOD AND APPARATUS FOR LUBRICATING A DIFFERENTIAL IN AN AXLE ASSEMBLY - A power transmitting assembly having a differential case and a differential gearset that is received in an interior chamber in the differential case. The power transmitting assembly is configured to provide improved lubrication into an interior of the differential case. | 09-01-2011 |
| 20090023531 | METHOD AND APPARATUS FOR LUBRICATING A DIFFERENTIAL IN AN AXLE ASSEMBLY - A method for lubricating an axle assembly can include: coupling a pair of bearing to opposite ends of a differential housing; placing the differential housing into a carrier housing assembly such that the bearings support the differential housing on the carrier housing assembly for rotation about a first axis; collecting a lubricant proximate a side of one of the bearings opposite the differential housing; and rotating the differential housing about the first axis to cause the one of the bearings to move a portion of the collected lubricant through the differential housing. A related axle assembly is also provided. | 01-22-2009 |
| 20100304914 | LIMITED SLIP DIFFERENTIAL WITH POSITIVE LUBE FLOW TO CLUTCH PLATES - A differential with a differential case, a differential gear set and a clutch pack. Apertures are formed axially through the differential case and the clutch pack to facilitate the introduction of lubricant through the differential case and into the clutch pack. An axle assembly and a method of operating an axle assembly are also provided. | 12-02-2010 |
| 20080220924 | Vehicle planetary gear device - A vehicle planetary gear device includes a ring gear, a sun gear, and a carrier, and pinions housed in the carrier. A penetration hole formed in a hollow cylindrical portion of the carrier has two inner wall surfaces that face an outer peripheral surface of a pinion. One of the inner wall surfaces has a curvature radius larger than the radius of the pinion, and has a curvature center that is apart from the radius center of the pinion gear. The pinion is disposed with respect to the carrier with a predetermined space formed between the one of the inner wall surfaces and the outer peripheral surface of the pinion, and thereby slides along a radial direction of the carrier. | 09-11-2008 |
| 20090176614 | Differential assembly with oil deflector shield - An axle assembly that includes a housing assembly, a lubricant and a differential assembly. The housing assembly defines a differential cavity with a lubricant sump into which the liquid lubricant is received. The differential assembly is mounted in the differential cavity for rotation about a rotational axis and includes a differential case, a ring gear, a gear set and an oil shield. The differential case has a body, which defines a gear cavity into which the gear set is received, and a flange that is coupled to the body and includes a flange face. The ring gear is coupled to the flange. The oil shield is coupled for rotation to the differential case and covers a least a radially outward portion of the circumferentially discontinuous features so that they do not directly contact the liquid lubricant in the lubricant sump when the differential assembly rotates about the rotational axis. | 07-09-2009 |
| 20110263372 | LUBRICATION STRUCTURE OF DIFFERENTIAL GEAR UNIT - In a lubrication structure of a differential gear unit, a case has a guide rib that extends over a certain area with respect to a rotation path of a head of a bolt when a ring gear rotates, and that protrudes out from the case toward the head of the bolt. Also, a through-hole that extends in a vertical direction is formed in an upper portion of a hollow supporting portion, and the guide rib has an oil reservoir that curves toward an upper end opening of the through-hole. | 10-27-2011 |
| 20100029430 | TRANSMISSION FOR VEHICLE - An automatic transmission includes: a differential mechanism which includes a ring gear; a case which forms a differential chamber that houses the differential mechanism; and an oil pan which is fitted to the case, and which stores oil. The differential chamber includes a first space in which the oil supplied from the oil pan is gathered, and a second space which is formed on the opposite side of the first space with respect to the ring gear in the direction in which the rotational axis of the ring gear extends, and which is communicated with a space inside the oil pan. An oil passage, through which the oil is introduced from the first space to the second space, is formed in the case. The oil passage is formed in a bottom portion of the differential chamber. | 02-04-2010 |
| 20120178576 | AXLE SYSTEM - An axle system is provided that included an axle assembly having an axle member, a gear coupled with the axle member, and a housing encasing a lubrication fluid and at least a portion of the axle member and the gear therein. A device may selectively heat and/or cool the lubrication fluid at one or more regions of the axle system. | 07-12-2012 |
| 20110111911 | METHOD AND APPARATUS FOR LUBRICATING A DIFFERENTIAL IN AN AXLE ASSEMBLY - A power transmitting assembly having a differential case and a differential gearset that is received in an interior chamber in the differential case. The differential case defines a tubular bearing mount and a plurality of oil galleries. The tubular bearing mount terminates at a radially extending shoulder. Each oil gallery intersects the radially extending shoulder at a first end and extends through the differential case to communicate with the interior chamber. At least one location along the length of each oil gallery has a lateral cross-section that is smaller than a lateral cross-section of that oil gallery's first end. | 05-12-2011 |
| 20120010037 | Final Drive Having A Lubrication System - A final drive comprising a lubrication system is provided. The final drive comprises an axle housing and a differential housing. The differential housing is in alignment with the axle housing, and they share a longitudinal axis. The final drive further comprises a lubricant ring having a lubricant ring inner diameter. The lubricant ring travels about an inner surface of the axle housing. Further, the final drive has a longitudinal axis region, defined as the region formed by the lubricant ring inner diameter. The lubrication system comprises a lubrication inlet in fluid communication with a lubricant outlet. The lubrication inlet is disposed in the axle housing to capture a portion of the lubricant ring. The lubricant outlet is disposed in the differential housing to distribute the portion of the lubricant ring generally to the longitudinal axis region. | 01-12-2012 |
| 20120316024 | Drive Axle Housing System for Reducing Oil Churning - A drive axle housing system may minimize churning of splash and spray oil within a drive axle housing. The drive axle housing system includes apparatus for incorporation into the axle, the apparatus including an oil churning reduction member that may be affixed to the interior walls of the axle housing. The oil churning reduction member includes interior surfaces adapted to closely align with interior moving gear components of the axle to minimize efficiency losses due to oil movement. The system may also incorporate an annular element, affixed to the axle housing and closely aligned with the backside of a ring gear component of the differential axle. The combined use of the member and the element may substantially reduce torque losses attributable to excessive churning of oil. | 12-13-2012 |
| 20090131210 | DIFFERENTIAL GEAR UNIT FOR MOTOR VEHICLES COMPRISING AN ACTIVE CONTROL MECHANISM FOR THE DRIVING FORCE DISTRIBUTION - A differential gear unit for motor vehicles comprises a housing and, therein, a differential gear mechanism, two coaxial gear mechanisms and two controllable friction clutches, the coaxial gear mechanisms transmitting an additional torque to one or other axle shaft according to the degree of engagement of the friction clutches. In order for it also to be possible for very high forces to be absorbed in long-term operation with very low installation space and wear, the coaxial gear mechanisms have in each case one internal gear which is connected fixedly in terms of rotation to one side of the associated friction clutch, and one sun gear which is connected fixedly in terms of rotation to the respective output element, and the second element of each coaxial gear mechanism is a sun gear, and a third element is configured as an annular gear which has an external toothing system which meshes with the first element and an internal toothing system which meshes with the second element. | 05-21-2009 |
| 20120172167 | AXLE ASSEMBLY - An axle assembly for a vehicle including a first gear, and a second gear joined to a shaft extending along a longitudinal axis. The second gear engages the first gear. A bearing is disposed over the shaft distal the second gear. A housing is disposed about at least a portion of the shaft. The housing includes a first lubricant pathway spaced apart from a second lubricant pathway, wherein the first lubricant pathway routes lubricant towards the bearing and the second lubricant pathway routes lubricant away from the bearing. The first and second lubricant pathways are not in a position coplanar with a plane of rotation of the first gear. | 07-05-2012 |
| 20100048341 | AXLE ASSEMBLY HAVING MECHANISM FOR CIRCULATING LUBRICATING FLUID TO WHEEL ENDS - An axle assembly with an axle shaft, an annular disc and a pair of change members. The axle shaft includes an unthreaded body portion having a first diameter. The annular disc is mounted on the body portion and has a central aperture through which the unthreaded body portion is received. The central aperture has a second diameter that is larger than the first diameter. Rotation of the axle shaft causes the annular disc to translate on the unthreaded body portion between the change members and wherein a direction in which the annular disc translates is changed through contact between the annular disc and the change members. | 02-25-2010 |
| 20100009800 | DEVICE FOR OPTIMIZING THE FEED FUNCTION OF THE RING GEAR OF A DIFFERENTIAL WITH REGARD TO THE MAXIMUM FLOW RATE - A device for optimizing the oil delivery function of the ring gear of a differential to maximize the volume of oil flow. The device includes an annular disk ( | 01-14-2010 |
| 20110039651 | Lubricating Device for a Variable Speed Transmission - The invention relates to a lubricating device for a variable speed transmission with an integrated interaxle differential for motor vehicles, on the shaft of the transmission there being at least one synchronizer clutch for shifting one or two lower (slower) gear ratios and the interaxle differential, and the synchronizer clutch and the interaxle differential being supplied with lubricating oil by way of a central longitudinal channel in the shaft and by way of radial channels and/or radial gaps branching off from it. For improved adaptation of the lubricating oil supply in defined driving states of the motor vehicle, there are means which are integrated into the longitudinal channel and which change the lubricating oil supply to the synchronizer clutch and the interaxle differential as a function of the driving speed. | 02-17-2011 |
| 20120270693 | LUBRICANT OIL, FRICTION MEMBER, AND GEAR-TYPE DIFFERENTIAL WITH DIFFERENTIAL LIMITING FUNCTION - A lubricating oil used in a friction-type drive power transmission apparatus which includes: at least one of two additives; a first additive selected from at least one of an aliphatic amine having a saturated or unsaturated hydrocarbon group with a carbon number of 12 to 20 (Chemical Formula 1) and an aliphatic amine ethylene oxide adduct having a saturated or unsaturated hydrocarbon group with a carbon number of 12 to 20 (Chemical Formula 2). | 10-25-2012 |
| 20080261742 | LIMITED SLIP DIFFERENTIAL AND MANUFACTURING METHOD FOR LIMITED SLIP DIFFERENTIAL - A plurality of microscopic grooves are created on the surface of the teeth of planetary gears, and thus, irregular unevenness is created. This irregular unevenness includes a plurality of first microscopic grooves which function as lubricant grooves and a plurality of second microscopic grooves which are shallower than the first microscopic grooves. | 10-23-2008 |
| 20120329599 | RING GEAR FASTENING STRUCTURE - Disclosed is a ring gear fastening structure in which a ring gear is fastened to the flange of a differential case configuring a differential sub-assembly. The inner circumferential surface of the ring gear is press-fitted into the outer circumferential surface of the flange, and the ring gear is swaged by means of a swage part which is disposed on at least one end of the flange in the axial direction. The inner circumferential surface of the ring gear is formed with a circumferential groove which extends in the circumferential direction of said inner circumferential surface. The circumferential groove is disposed facing the outer circumferential surface of the flange. | 12-27-2012 |
| 20120100951 | OVERDRIVE UNIT - An overdrive unit for a vehicle is operatively connectable to a transverse mounted front wheel drive vehicle gearbox, which has been arranged to provide a single output shaft. The overdrive unit includes a planetary gear set and a differential are mounted together in an overdrive unit housing such that the output shaft of the vehicle gearbox is operatively connectable to the planetary gear set. The planetary gear set is further operatively connectable to drive shafts of the vehicle via the differential. A clutch unit is provided for selectively engaging gearing of the planetary gear set. | 04-26-2012 |
