Class / Patent application number | Description | Number of patent applications / Date published |
475344000 | Particular gear tooth feature | 20 |
20080207389 | Drive hub unit for a wind power generator - A transmission-hub unit ( | 08-28-2008 |
20090062058 | Plantary Transmission Having Double Helical Teeth - A planetary gear set includes a sun gear including a first set of gear teeth having a helix angle and second set of gear teeth formed as a single unit with the first set of gear teeth and having a second helix angle of opposite hand relative to the first helix angle. A ring gear includes a third set of gear teeth having a third helix angle, and fourth set of gear teeth and having a fourth helix angle of opposite hand relative to the third helix angle. Planet pinions, each include a fifth set of gear teeth having a fifth helix angle, and sixth set of gear teeth formed as a single unit with the fifth set of gear teeth and having a sixth helix angle of opposite hand relative to the fifth helix angle. | 03-05-2009 |
20090069145 | Planet gear speed reducer - A planet gear speed reducer includes a casing having a receiving space defined therein for receiving an output shaft and an input shaft. The output shaft and the input shaft are longitudinally connected to each other. The output shaft includes a planet gear arm and a drive axle concentrically and longitudinally extending the planet gear arm. A third bearing is mounted in a bottom of the planet gear arm. The input shaft has a sun gear axle concentrically extends therefrom and engaged to the multiple planet gears on the planet gear arm. A fourth bearing is securely sleeved on a heel of the sun gear axle and an outer periphery of the fourth bearing is securely received within annular protrusion. A stub concentrically and longitudinally extends from a free end of the sun gear axle and securely received in the third bearing. | 03-12-2009 |
20090118072 | GENERATOR SHEAR GEAR - A shear gear arrangement with gear teeth on the bearing liner positioned to engage complementary teeth on a shear gear main body. The bearing liner is static, while the shear gear main body mounts on the rotating drive shaft. If a failure occurs, the drive shaft displacement causes the shear gear main body gear teeth to engage the bearing liner teeth, instantaneously loading the shear section of the shaft with a sufficient torque load to shear the section as designed. | 05-07-2009 |
20100292043 | Planetary ring gear lug design for NVH improvement - In the present invention, an improved planetary gearset which reduces the amount of vibration transferred from the planetary gearset to a housing. The present invention is a new way to interface the ring gear of a planetary gearset with the housing by incorporating a series of lugs around the ring gear and adjusting the number of lugs and the size and the shape of the lugs. The distribution of these lugs affects the sound levels transferred from the planetary gearset. Additionally, multiple rows of lugs can also be strategically arranged on one ring gear to gain further noise and vibration improvement. | 11-18-2010 |
20110237384 | PLANETARY GEAR MECHANISM FOR A BICYCLE INTERNAL HUB TRANSMISSION - A planetary gear mechanism for a bicycle internal hub transmission that includes at least one stepped planetary gear. The stepped planetary gear has a plurality of first helical gear teeth with a first outer diameter and a plurality of second helical gear teeth with a second outer diameter that is greater than the first outer diameter. The first helical gear teeth have a first helix angle and the second gear teeth have a second helix angle with the first and second helix angles being angled such that for a given amount of rotation of the stepped planetary gear corresponding travel points on the first and second helical gear teeth move the same axial amount with respect to the rotational axis the stepped planetary gear. | 09-29-2011 |
20120208668 | GEARING WITH CYLINDRICAL TOOTH FORMS - Embodiments provide for planetary gearing systems with sun, planetary and ring gears, wherein the ring gears have generally cylindrical or elliptical tooth forms with a common shape and geometric parameters. The ring gear and a sun gear each engage one or more of planetary gears in respective mesh engagements, wherein the gear forms on each may be independently formed as a function of their respective geometries (sun or ring gear pitches, and sun or ring radii from a common central axis of the planetary gearing system), and as a function of the planetary gear tooth form shape and geometric parameters, planetary gear radius from the common central axis, and the planetary gear tooth pitch. | 08-16-2012 |
20120231924 | Optimized Continuous and Reversible Automatic Transmission - This invention is distinguished by a continuously variable transmission that can contain one or more gear sets. This gear set is composed of two coupled gears (attached to each other), concentric with different sizes, with one shaft free to rotate and orbit, because this rotation will furnish the velocity in the direction of the movement to alter gear ratios, without gear shifting; besides two additional concentric and finned structures that complete the system's functionality. There is no need to shift gears, optimizing the movement by means of planetary gears revolving around the drive and driven shafts. | 09-13-2012 |
20120264563 | GAPLESS PLANETARY TRANSMISSION - The present invention provides a backlash-free planetary transmission device, comprising a housing ( | 10-18-2012 |
20130023378 | Method of Assembly for Gas Turbine Fan Drive Gear System - A method of assembling an epicyclic gear train includes the steps of providing a unitary carrier having a central axis that includes spaced apart walls and circumferentially spaced apart apertures provided at an outer circumference of the carrier. Gear pockets are provided between the walls and extend to the apertures, and a central opening in at least one of the walls. A plurality of intermediate gears is inserted through the central opening and move the intermediate gears radially outwardly into the gear pockets to extend through the apertures. A sun gear is inserted through the central opening. The plurality of intermediate gears is moved radially inwardly to engage the sun gear. A gear reduction is also disclosed. | 01-24-2013 |
20130029802 | Two-Array Planetary Gear System With Flexpins and Helical Gearing - A planetary gear system (P) includes a sun gear ( | 01-31-2013 |
20130035197 | PLANETARY GEAR TRAIN AND CORRESPONDING PRODUCTION METHOD - Described herein is a planetary gear train, comprising: a sun gear that can turn about an axis and comprises a plurality of first teeth; a fixed crown wheel comprising a plurality of second teeth; and two planetary gears, each comprising a plurality of third teeth, the planetary gears each meshing with the crown wheel and the sun gear and able to turn about second axes, which are in turn able to turn about the first axis; at least two third teeth simultaneously mesh with second teeth and further two third teeth simultaneously mesh with first teeth; the third teeth comprise a first a second side, which have, respectively, a first and a second pressure angle different from one another; and the number of the third teeth is different from the absolute value of the semidifference between the number of the first teeth and of the second teeth. | 02-07-2013 |
20130035198 | GEARBOX COMPRISING A STATIONARY GEAR COMPONENT FORMED ON THE BASIS OF VARIABLE FLANK PROFILES OF GEAR TEETH - In a gearbox, a stationary gear component such as a ring gear of a planetary gear comprises a tooth trace correction that varies along the tooth trace so as to provide for superior load distribution in the gearbox. In some illustrative embodiments, the gearbox is a component of a wind power plant wherein the circumferentially varying tooth trace correction of the stationary ring gear results in superior durability and performance. | 02-07-2013 |
20130102435 | REDUCTION GEAR AND TRANSMISSION MECHANISM INCLUDING SUCH A REDUCTION GEAR FOR CONTROLLING AN AIRCRAFT - A reduction gear includes a stationary sun gear, a coaxial mobile sun gear, planet gears, and a planet carrier. In order to ensure easy, reliable assembly for the reduction gear, while transmitting high torques having a considerable speed reduction, the helical gear teeth of the stationary and mobile sun gears are reversed relative to one another and are mutually separated in the direction of the main axis of rotation, thus forming a free space between them, which is suitable for adjusting the axial position of the planet gear or gears when assembling the reduction gear, such as to engage the first and second gear teeth of the planet gear with the respective gear teeth of the stationary and mobile sun gears. | 04-25-2013 |
20130237369 | ROTATION TRANSMISSION MECHANISM AND ROTARY CONNECTOR - At least one of plural gears includes a tooth-side base portion and an opposite base portion that are disposed coaxially and connected to each other by connecting portions, the tooth-side base portion is formed in the shape of a ring and includes a tooth row on one peripheral surface thereof, and the opposite base portion faces a peripheral surface of the tooth-side base portion opposite to the peripheral surface of the tooth-side base portion on which the tooth row is formed. Protruding portions are formed on the peripheral surface of the tooth-side base portion facing the opposite base portion. The connecting portions extend from the protruding portions toward the peripheral surface of the opposite base portion facing the tooth-side base portion. A portion, which is connected to the tooth-side base portion, of each connecting portion and a peripheral surface-tangential direction of the tooth-side base portion form an acute angle. | 09-12-2013 |
20140378271 | PLANET FOR A PLANETARY ROLLING-CONTACT SCREW | 12-25-2014 |
20150300474 | RING GEAR MOUNTING STRUCTURE - A ring gear mounting structure is configured such that a ring gear is fitted onto a supporting portion, and the ring gear abuts against a stopper portion that protrudes from on one end portion of the outer peripheral surface in a rotational axis direction of the ring gear. A groove is formed in a portion of the outer peripheral surface that is on the stopper portion side of the outer peripheral surface. A portion of the outer peripheral surface, which is on a side opposite the stopper portion across the groove, is a press-fitting surface that the ring gear is press-fitted onto and contacts. A predetermined gap is formed in a radial direction of the ring gear and the rotational axis direction of the ring gear. | 10-22-2015 |
20160177841 | PLANETARY GEAR SYSTEM FOR TURBOMACHINE | 06-23-2016 |
475345000 | Nonmetallic or resilient | 2 |
20120196720 | PLANETARY GEAR UNIT AND IMAGE FORMING APPARATUS INCLUDING SAME - A planetary gear unit including a sun gear rotatable by torque from a drive source, an outer gear disposed coaxially with the sun gear, multiple planetary gears disposed within the outer gear at equal intervals along an inner circumference of the outer gear to engage the sun gear and the outer gear, a carrier pin to rotatably support each of the multiple planetary gears, and a carrier rotatable coaxially with the sun gear and the outer gear to support both ends of the carrier pin. At least a first end of the carrier pin is constructed of a circular portion and a linear portion to form a first supported part. The carrier includes a first support part that supports the first supported part and is formed to position the circular portion of the first supported part downstream from the linear portion in a direction of rotation of the carrier. | 08-02-2012 |
20130109529 | ROTARY BODY DRIVER WITH PLANETARY GEAR TRANSMISSION AND IMAGE FORMING APPARATUS INCORPORATING SAME | 05-02-2013 |