Class / Patent application number | Description | Number of patent applications / Date published |
475348000 | Planet pinion supported by roller bearings | 21 |
20090149293 | WIND TURBINE DRIVE - Wind turbine drive which is formed of a rotor with a rotor shaft and of a transmission box with a planetary gear unit which is connected to the rotor shaft, which drive is of the type whereby the transmission box is supported by the far end of the rotor shaft and is provided with a reaction arm, whereby the rotor shaft is bearing-mounted with at least one bearing which is directly fixed to the nacelle and a second bearing which is either fixed to the nacelle or which is part of the transmission box, whereby the planet carrier of the planetary gear unit is bearing-mounted in the gearbox via one bearing at the most. | 06-11-2009 |
20090163316 | PLANETARY TYPE GEAR UNIT COMPRISING A PLANET CARRIER WITH A PLANET BOGIE PLATE - A planetary type gear unit comprising a planet carrier with a planet bogie plate and at least one planet shaft, whereby on both sides of the bogie plate a planet wheel is mounted on the planet shaft by taper roller bearings, whereby the planet shaft is provided with an axially displaceable piece on each of its extremities forming an abutment which provides an axial support for the inner bearing rings of the taper roller bearings and with a tensioning elements by which the axially displaceable pieces can be displaced to one another for controlling the pre-tensioning on the taper roller bearings. | 06-25-2009 |
20090215583 | Rotation support apparatus - A rotation-support apparatus having construction in which large force is not applied to continuous sections between column sections | 08-27-2009 |
20100120576 | PLANETARY GEAR DEVICE - The present invention provides a planetary gear device that can prevent wear and seizing of a pinion gear and a carrier, has few components, and of which assembly is not complicated. In the planetary gear device of the invention, a pinion gear | 05-13-2010 |
20100151986 | PLANETARY CARRIER PINION PIN RETAINER PLATE - A shaft retainer for a planet gear carrier of a planetary gear assembly both retains the pinion shafts within the carrier and maintains their angular orientation to achieve improved oil flow to the pinion bearings. Each of the pinion shafts includes an opening and an axial passageway that communicates with a radial passageway at the middle of the shaft. At the end of the pinion shaft opposite the axial passageway opening is a flat extending across the shaft. The flat is normal to the axis of the radial passageway. The pinion shafts are slip fit into suitable bores in the planetary gear carrier and support a needle bearing and planet or pinion gear. At one end of the carrier, the flats are engaged by a circular retainer so that the radial passageways of each of the pinion shafts are oriented radially outwardly. The circular retainer may either be a flat circular plate or have an L-shaped cross-section. The circular retainer may be affixed to the planetary gear carrier by a snap ring or a plurality of fasteners. At the end of the carrier having the axial shaft passageway openings, a lube dam directs a flow of lubricating oil from a source such as a hollow drive shaft to the open axial ends of the pinion shafts. | 06-17-2010 |
20110021309 | BEARING ARRANGEMENT FOR THE ROTATABLE MOUNTING OF A PLANET GEAR ON A PLANET CARRIER - A bearing arrangement for rotatable mounting of a planet gear on a planet carrier, which has two tapered roller bearings arranged with an axial spacing to one another. In order to increase the load capacity of the bearing arrangement, at least one radial bearing is arranged in the space remaining between the tapered roller bearings. The radial bearing can be embodied as a cylindrical roller bearing, a needle bearing, a ball bearing or as a plain bearing. In order to distribute the load capacity of the bearing arrangement uniformly, the radial bearing, which is arranged between the tapered roller bearings, is adjustable with regard to the bearing play or a bearing preload. | 01-27-2011 |
20110077120 | PLANETARY GEAR UNIT FOR A GEARBOX FOR A WIND TURBINE - A planetary gear unit ( | 03-31-2011 |
20110118076 | Single Planet Gear Rotary Actuator - A rotary actuator comprises a rotatable output ring with a generally denticulate inner surface region and an output ring axis of rotation; a pair of stationary rings, each with a generally denticulate inner surface region and a stationary ring axis, each located on a different end of the output ring with the stationary ring axes in general alignment with the output ring axis; a generally cylindrical planet comprising distal outer regions that each have outer surfaces for supporting the planet, a generally denticulate central outer surface region that engages the denticulate inner surface region of the output ring, and generally denticulate intermediate outer surface regions that each engage the denticulate inner surface region of a respective one of the stationary rings, and a planet axis of rotation that is generally parallel to the output ring axis; and a pair of generally cylindrical planet carriers, each having a carrier axis of rotation in general alignment with the output ring axis, each carrier supporting the outer surface of a respective one of the distal outer regions of the planet to allow rotation of the planet about the planet axis and movement of the planet axis about the output ring axis in a generally circular path as the planet carriers rotate about their carrier axes of rotation; wherein rotation of the planet carriers about their carrier axes cause the cylindrical planet to rotate about its planet axis as it moves through its circular path about the output ring axis, thereby causing the output ring to rotate. | 05-19-2011 |
20110130243 | PLANETARY GEAR UNIT - A planetary gear unit includes a planet carrier having a backplate and being provided with planet shafts distributed uniformly around the planet carrier's axis and extending through bores in the backplate, each planet shaft rotatably supporting a pair of planet gears by planet bearings, the planet gears being mounted between a ring gear and a sun gear for mutual interaction. The planetary gear unit further includes a key provided in a keyway of the planet shaft and extending to the backplate for preventing the at least one planet shaft from rotating around its own axis. The key and keyway are provided at a location positioned between 45° and 270° in a clockwise direction around the circumference of the planet shaft, with 0° being defined as a point at the planet shaft circumference corresponding with the largest distance from the centre of the bogie plate seen from the rotor side onwards. | 06-02-2011 |
20110212808 | ROLLING BEARING ARRANGEMENT AND PLANETARY TRANSMISSION COMPRISING THE ROLLING BEARING ARRANGEMENT - A rolling bearing arrangement which has rolling elements and at least one cage guiding the rolling elements. The cage has at least one contact zone for sliding contact with a further contact zone. | 09-01-2011 |
20110306462 | AXIAL THRUST CONTROL FOR GEARING - An outboard thrust bearing assembly includes: a drawbolt, an inner end cap, an outer end cap, and at least one race of thrust bearings; the drawbolt for clamping the inner end cap to the outer end cap and about a pinion gear of a planetary gear, wherein the at least one race of outboard thrust bearings is retained in place by the outer end cap, the pinion gear, a planetary gear carrier and a hub cap. A wheel motor and a vehicle are disclosed. | 12-15-2011 |
20120208669 | GEAR BOX FOR WIND TURBINE GENERATOR AND WIND TURBINE GENERATOR - The present invention provides a gear box for a wind turbine generator which can reduce damage by flaking even when a self-aligning roller bearing is adopted as a planet bearing and a wind turbine generator. The gear box | 08-16-2012 |
20130005528 | GEAR TRANSMISSION LOAD SHARING MECHANISM - A method for use with a transmission system (A, A | 01-03-2013 |
20130116083 | Planet Carrier Arrangements - A planet carrier | 05-09-2013 |
20130157802 | MODULAR GEAR UNIT FOR A WIND TURBINE - A planetary gear unit ( | 06-20-2013 |
20130237370 | Pin Retainer - A gear arrangement for a planetary gearbox includes a planet carrier, a planet pin, a planet gear, bearing means located between the planet pin and the planet gear, the bearing means including a bearing ring, a retainer secured to the planet carrier by one or more bolts, and one or more shims located between the retainer and the planet pin. The planet pin is hollow and is in fluid communication with an inside surface of the bearing ring and with an inlet. This means that a fluid forced via the inlet and the hollow planet pin applies a radial force to the bearing ring, reducing the contact friction between the bearing ring and the planet pin and allowing an axial position of the planet pin to be adjusted to provide a correct preloading to the bearing means. This means that the bearing can be pre-set, in-situ using hydraulic actuator and oil injection. | 09-12-2013 |
20130324354 | ROADHEADER GEARBOX - A gearbox includes a shaft input spherical bearing and a shaft output spherical bearing enabling the ring gear to float within the housing and not engage the housing. The shaft output spherical bearing permits angular displacement of the output shaft with respect to the longitudinal axis of said output shaft. A spline connection enables the ring gear to pivot with respect to the cover. Loads transmitted to the housing of the gearbox are not transferred to the gear systems and the gear systems self-align within the housing. | 12-05-2013 |
20140141931 | WHEEL DRIVE UNIT - A wheel drive unit comprises: a planetary gear mechanism including a planetary gear and an internally-toothed gear; a casing integrated with the internally-toothed gear, a wheel being attached to the casing, and the casing transmitting rotation of the internally-toothed gear to the wheel; a bearing fitted to an inner circumferential surface of the casing at a position more toward an interior of a vehicle than the planetary gear and rotatably supporting the casing. An inner diameter of an outer race of the bearing is larger than an outer diameter of the planetary gear. | 05-22-2014 |
20140221150 | ROLLER BEARING - Surface indentation and oil film shortage on rollers is prevented and longer service life of a roller bearing is achieved, by preventing wear debris from being caught and accumulated in pockets of a holder of the roller bearing. Positions and dimensional relations of the diameters of inner and outer ring raceways, the inner and outer diameters of the holder, and inner and outer protrusions which are provided to pillar parts of the holder to prevent the rollers from coming off are defined such that the inner and outer protrusions of the pillar parts always do not come into contact with the outer circumferential surfaces of the rollers in the state where the rollers and the holder are incorporated between inner and outer members. As a result, lubricant oil is smoothly circulated in gaps formed between the outer circumferential surfaces of the rollers and the pillar parts of the holder. | 08-07-2014 |
20160252176 | GEARBOX AND SUPPORT APPARATUS FOR GEARBOX CARRIER | 09-01-2016 |
20160377170 | AXIAL SECURING OF A PLANETARY GEARING BEARING ARRANGEMENT - A planetary transmission, for a wind turbine, having at least one of each of a planetary gearwheel, a shaft and a carrier. The planetary gearwheel is mounted by at least first and second bearings for rotation on the shaft. The first bearing supports the gearwheel against displacement in a first axial direction while the second bearing supports the gearwheel against displacement in a second axial direction, opposite to the first direction. The planetary transmission includes elements for supporting inner rings of the first and the second bearings against respective displacement in the first and the second directions, and an element for supporting the shaft on the carrier against displacement of the shaft in the first direction. The elements for supporting the shaft on the carrier are arranged so that the first and the second bearings cannot be in a load path between the planetary shaft and the carrier. | 12-29-2016 |