Class / Patent application number | Description | Number of patent applications / Date published |
475168000 | Gear teeth comprise rolling bodies | 22 |
20080207377 | Oscillating internally meshing planetary gear system and method for manufacturing eccentric body shaft - The oscillating internally meshing planetary gear system has the configuration of rotating external gears inside an internal gear oscillatingly through the intermediary of eccentric bodies so that a relative rotation between the internal gear and the external gears is taken out through a pair of first and second carriers arranged on both axial sides of the external gears. In this configuration, eccentric body shafts are supported by the first and second carriers through needles. Thrust receiving means for restricting axial movement of the eccentric body shafts are arranged between step portions formed on the eccentric body shafts and the first and second carriers. | 08-28-2008 |
20080287244 | Simple structural speed differential mechanism - A simple structural speed differential mechanism installed between a driving shaft and two driven shafts comprises a transfer shaft with a polygonal outer shape; a middle section of the transfer shaft being a gear which is engaged to the driving shaft; two roller frames installed at two ends of the transfer shaft; each roller frame being installed with a plurality of penetrating openings; the number of the penetrating openings being equal to that of the side surfaces of the transfer shaft; each penetrating opening receiving a rolling post; and two shaft connecting units; an outer side of each roller frame being installed with a shaft connecting device; one end of each shaft connecting unit being installed to an outer side of the roller frame; and another end of the shaft connecting unit serving for assembling the driven shafts. | 11-20-2008 |
20090118050 | Reduction Gear Transmission and Manufacturing Method Thereof - A reduction gear transmission is realized in which the total speed reduction ratio is adjusted to a desired value without making any changes to a rotation direction changing gear mechanism or a speed reduction unit. | 05-07-2009 |
20090270215 | TRANSMISSION - Described is a transmission, having a hollow cylindrical base body, which has an internal toothing and a rotational axis, with end sides in which are rotatably mounted a driven input element and an output element, wherein the output element comprises two rotary bodies which can be or are connected to one another in a non-rotatable fashion and which have a circular cross section transversely with respect to the rotational axis and between which are arranged at least one gearwheel and means for converting planetary movements of the gearwheel into rotational movements of the output element. In the transmission, the forces which hold the output element together and the bearing forces which act between the output element and the base body are independent of one another. | 10-29-2009 |
20100216585 | Rolling Ball Type Two-Stage Low Speed Changer Device - In a rolling ball type two-stage low speed changer device | 08-26-2010 |
20110092332 | COMPACT BACKDRIVE RESISTANT TRANSMISSION - A configurable power transmitter device having an input structure, an output structure, and a torque conversion assembly. The input, output, and torque conversion assembly are arranged to rotate with respect to each other and to be contained within a housing structure. The power transmitter includes structure for transforming concentric rotational motion from the input structure into eccentric motion of the transmitting structure to concentric rotational motion of the output structure. The power transmitter device has a configuration which has anti-back drive features and which provides self-governing and self-braking capabilities operative on the output structure. | 04-21-2011 |
20110319216 | GEAR STAGE - A gear stage ( | 12-29-2011 |
20110319217 | ROLLER TYPE TRANSMISSION DEVICE - In a roller type transmission device | 12-29-2011 |
20110319218 | ROLLER TYPE TRANSMISSION DEVICE - In a roller type transmission device | 12-29-2011 |
20110319219 | DECELERATOR - An in-wheel motor drive unit ( | 12-29-2011 |
20120015774 | Eccentric dual stepping gear roller bearing system - An eccentric dual stepping gear roller bearing system, which consists of an input shaft and an output shaft associated with a gear ring holding an exterior row of equally spaced ball bearings, an output gear with an interior row of lesser diameter with fewer equally spaced ball bearings held at a different plane relative the exterior row, and at least one stepping gear with exterior and interior stepping gears having differing radii joined off-set on top of one another and eccentrically mounted on the drive shaft to act on the interior and exterior rows of roller bearings, which act as gear teeth to rotate the output gear to reduce shaft output. | 01-19-2012 |
20120289372 | ROTARY SPEED-CHANGE TRANSMISSION - A transmission has a housing having a main axis with a retaining element fixed in the housing and forming a set having a predetermined number of radially extending and angularly equispaced guides. An output element rotatable in the housing about the axis is formed with an array having a number smaller than the predetermined number of radially inwardly open recesses axially adjacent the guides. An input element rotatable in the housing about the axis has a radial outer and generally circular peripheral surface centered on an axis radially offset from the main axis. Respective transmission elements radially displaceable in the guide grooves between inner and outer positions each have a shaft extending substantially parallel to the axis with a guide section engaged and radially shiftable in the respective guide groove, a driven section engageable in the recesses, and a drive section radially engageable with the input-element surface. | 11-15-2012 |
20130023374 | SPEED REDUCER INCORPORATING PORTION STRUCTURE, INCORPORATING METHOD, AND ECCENTRIC OSCILLATING TYPE SPEED REDUCER - There is provided a speed reducer incorporating portion structure for a plurality of industrial machines in which an eccentric oscillating type speed reducer having an internal gear and an external gear that rotates in an oscillating manner while internally meshing with the internal gear is incorporated. The speed reducer may be incorporated in the plurality of industrial machines, respectively, so that the position of a meshing portion when the external gear is assembled to the internal gear has a specific phase relationship common to the plurality of industrial machines with respect to a specific part of an industrial machine in which the speed reducer is incorporated. | 01-24-2013 |
20130035191 | SPEED REDUCER - A speed reducer is proposed whose rollers are axially long relative to the axial length of its cage to extend its lifespan. The speed reducer includes an input shaft ( | 02-07-2013 |
20140018203 | TWO-STAGE DIFFERENTIAL CYCLOIDAL SPEED REDUCER WITH A HIGH REDUCTION RATIO - A two-stage differential cycloidal speed reducer with a high reduction ratio is provided, including: a plurality of supporting crank shafts; an input shaft including a first crank shaft portion and a second crank shaft portion; a first cycloidal gear provided on the first crank shaft portion; a second cycloidal gear provided on the second crank shaft portion and connected with the first cycloidal gear through the supporting crank shafts; a plurality of first ring pins provided around the outer circumference of the first cycloidal gear and in sliding contact with a plurality of teeth on the periphery of the first cycloidal gear; a first annular gear with the plurality of first ring pins; a plurality of second ring pins provided around the outer circumference of the second cycloidal gear and being in sliding contact with a plurality of teeth on the periphery of the second cycloidal gear; and a second annular gear with the plurality of second ring pins. | 01-16-2014 |
20140162826 | MOTOR ASSEMBLY WITH SPEED REDUCER - A motor assembly includes an electric motor and a speed reducing mechanism. The speed reducing mechanism includes: a housing; an internal gear supported by the inner diameter surface of the housing; eccentric disks capable of rotating inside the internal gear when the rotating shaft of the electric motor rotates; an output shaft having at the axial end thereof a cage rotatably disposed between the internal gear and the eccentric disks, the cage being arranged coaxially with the rotation axis of the eccentric disks; and rolling elements retained by the cage and meshing with internal teeth of the internal gear, the number of the rolling elements being smaller than the number of the internal teeth. The eccentric disks are provided on the rotating shaft of the electric motor. | 06-12-2014 |
20140256496 | CYCLOIDAL PINWHEEL SPEED REDUCER - A cycloid pinwheel speed reducer includes a first housing, two cycloidal gears, a plurality of rollers, an output shaft, a second housing, a mounting frame, an input gear, a transmission gear, and a first transmission shaft. The mounting frame includes a mounting portion, a first eccentric portion, and a second eccentric portion. The cycloidal gears are respectively sleeved on the first eccentric portion and the second eccentric portion. The second housing is sleeved on the mounting portion. The rollers are sandwiched between the second housing and the cycloidal gears. The transmission gear is rotatably mounted within the mounting portion and sleeved on the first transmission shaft, and meshes with the input gear and the first housing. | 09-11-2014 |
20140309068 | CYCLOID PINWHEEL REDUCER - A cycloid pinwheel reducer includes a housing, two cycloid pinwheels, a plurality of rollers, an output flange, and a first transmission assembly. The housing forms an inner teeth ring in an inner wall of the housing. The two cycloid pinwheels are received in the housing. Each cycloid pinwheel forms a meshing portion. The rollers roll in position between the housing and the meshing portions. The output flange is non-rotatably connected with the cycloid pinwheels. The first transmission assembly includes a first transmission gear, a second transmission gear meshed with the first transmission gear. The second transmission gear includes a base body, a second teeth portion positioned on the base body, a first eccentric portion, and a second eccentric portion. The second teeth portion is meshed with the first transmission gear. The two cycloid pinwheels is sleeved on the first and second eccentric portions respectively. | 10-16-2014 |
20140371019 | GEAR UNIT - A gear unit has a washer which is provided at a position where the washer is able to come into contact with a retainer of roller bearings provided to each of adjacent eccentric parts in a crank shaft, and which regulates a movement of the roller bearing in an axial direction. A housing recess which houses the washer is formed on at least one face of the faces of adjacent oscillating gears facing each other. The housing recess includes an axial direction regulating surface which regulates movement of the washer in the axial direction, and a radial direction regulating surface which regulates movement of the washer in the radial direction. | 12-18-2014 |
20150337932 | Actuator for Seat Adjustment - An actuator for adjusting a seat includes a motor, a gear-box, and an output member. The gear-box includes a casing accommodating a two stage gear train connecting the motor to the output member. The gear train has a first and second transmission mechanisms. The first transmission mechanism includes a worm on a shaft of the motor, and a worm wheel meshed with the worm. The second transmission mechanism is a movable teeth gear transmission mechanism and has an eccentric wheel that rotates with the worm wheel, an internally toothed ring gear fixed to the casing, a fluted disc with radial grooves formed in its outer periphery, and rollers mounted in the radial grooves. The eccentric wheel drives the rollers to mesh with the ring gear to rotate the fluted disc, to drive the output member. | 11-26-2015 |
20160053871 | CYCLOID GEAR - A housing ( | 02-25-2016 |
20160131228 | Oscillatory Gearbox - A gearbox apparatus comprising a base gear, output gear, center gear set, and input cam. The input cam has eccentricity to allow simultaneous gear interaction between the center gear set and the base gear, and the center gear set and the output gear. The center gear set's gear interacting with the output gear having number of teeth A. The output gear with number of teeth being B. The center gear set's gear interacting with the base gear having number of teeth C. The base gear with number of teeth being D. For gears of the same pitch the number of teeth is A−B is equal to N while C−D is also equal to N. The resultant ratio between the output gear and the input cam when the base gear is held stationary is equal a predetermined ratio of 1:(1/(A/B−C/D)). | 05-12-2016 |