| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074411000 | Yieldability in gear trains | 29 |
| 20090114047 | Gear Assembly - A gear assembly for transmitting torque from one shaft to another comprises two intermeshing gears mounted on respective shafts. One of the gears comprises a hub member for receiving one of the shafts, a toothed annular member mounted for rotation with the hub member. At least one spring provided between the hub member and the annular member has stiffness capable of reducing torsional vibrations and noise induced during rotation of the gears by the eccentricity of at least one of the gears. | 05-07-2009 |
| 20090120223 | GEAR SUPPORT STRUCTURE - A gear support mechanism for supporting two gears and an intermediate gear which meshes with the two gears to transfer rotation of one of the two gears to the other, includes a gear-shaft support member(s) which supports a gear shaft of the intermediate gear; and a spring member installed between the gear-shaft support member and the intermediate gear. The spring member includes a gear contacting portion which is in contact with the intermediate gear, and resilient support legs extend radially from the gear contacting portion and are in contact with the gear-shaft support member, the spring member biasing the intermediate gear in a direction of an axis of the gear shaft. Each of the two gears is positioned in an inter-leg space between adjacent resilient support legs as viewed in a direction along the axis of the gear shaft. | 05-14-2009 |
| 20090217779 | Compliant gear assembly, engine and gear train operating method - A compliant gear assembly for a gear train of an internal combustion engine includes a hub subassembly having a first hub component and a second hub component. The first hub component defines a first axis, and the compliant gear assembly includes a gear ring rotatable relative to the hub subassembly and defining a gear ring axis of rotation. The second hub component is movable relative to the first hub component in a direction normal to the first axis between a first stop position at which the gear ring axis of rotation is co-linear with the first axis and a second stop position at which the gear ring axis of rotation is parallel to but not co-linear with the first axis. A compliance mechanism is coupled between the first hub component and the second hub component and biases the second hub component toward the first stop position. Translating the second hub component relative to the first hub component in a direction normal to the first axis attenuates torque spikes induced for example via fuel injector actuation and/or cylinder firing in an engine gear train employing the compliant gear assembly. | 09-03-2009 |
| 20090277294 | STEERING APPARATUS - In the event that a moment in a bending direction is generated in a pinion shaft, for example, when a vehicle is involved in a collision or the like, since a bending facilitating portion which is a circumferential groove | 11-12-2009 |
| 20090282938 | Composite ring gear with metallic gear insert, and method of forming same - A composite ring gear ( | 11-19-2009 |
| 20100011893 | GEAR MECHANISM AND BLADE DRIVE DEVICE - A gear mechanism includes a pair of gears including first and second gears overlapped with each other in an axial direction. The first and second gears include first and second tooth portions, respectively. The first tooth portion slightly projects outwardly from the second tooth portion. The first gear is formed with a deformation facilitating portion for facilitating deformation of the first gear in a radial direction. | 01-21-2010 |
| 20100043579 | ROTARY DEVICES - A rotary device, for example in the form of a gear wheel, comprises a hub ( | 02-25-2010 |
| 20100077881 | GEAR MOUNTING - This invention relates to a gear mounting having a spindle ( | 04-01-2010 |
| 20100294063 | FRICTION DAMPED GEARS - One exemplary embodiment includes a transfer gear that carries a friction damping component that damps vibrations in the gear. The friction damping component may be carried on or in a hub, a web, or both the hub and the web, and may include at least one non-bonded surface that contacts an adjacent surface. | 11-25-2010 |
| 20100326224 | GEAR DEVICE AND POWER TRANSMISSION APPARATUS - A gear device which vibrates less and emits less noise. The gear device has a first gear provided to a first shaft, a second gear provided to a second shaft and meshing with the first gear, and a third gear provided to a third shaft and meshing with the second gear. The second gear has formed therein through-holes extending in the circumferential direction about the rotation axis of the second gear, and this changes the circumferential rigidity of the second gear. The first and third gears are arranged such that the rigidity of the second gear at certain time at the point of meshing between the first and second gears and the rigidity of the second gear at the point of meshing | 12-30-2010 |
| 20110072924 | POWER UNIT FOR A VEHICLE - A power unit for a vehicle includes a buffering device provided on a final shaft parallel to a countershaft of a speed change gear which is configured to change a speed resulting from rotational power inputted from an engine stepwise. The buffering device includes a damper gear wheel supported for relative rotation on the final shaft, a lifter coupled against relative rotation but for relative movement in an axial direction on the final shaft and engaged by a cam provided on one face of the damper gear wheel, a spring retainer supported at a position on the final shaft spaced apart from the lifter, and a coil spring provided between the lifter and the spring retainer in such a manner as to exert spring force for biasing the lifter toward the damper gear wheel. The power unit carries out changeover between a state where the rotational power in a forward direction from the countershaft is transmitted to the damper gear wheel and another state wherein the rotational power in a reverse direction from the countershaft is transmitted to the damper gear wheel through a reverse gear train including idle gear wheels supported for rotation on the countershaft and an idle shaft extending in parallel to the final shaft. The buffering device is disposed on the final shaft and positioned between a pair of imaginary planes, the pair of imaginary planes extending perpendicularly to an axial line of the idle shaft and passing opposite ends of the idle shaft. | 03-31-2011 |
| 20110079098 | TORQUE-HANDLING GEAR WITH TEETH MOUNTED ON FLEXIBLE ARMS - First gear for use in a gear set including a second gear has a hub to which are attached a plurality of arms made of an elastic material. Each pair of adjacent arms defines a slot between them into which the arms may bend. The arms can deflect elastically in the plane as a cantilevered beam. Each arm has on the end thereof, a tooth for meshing with a tooth on the second gear to allow transfer of force between the first gear's tooth and the meshing second gear's tooth. A load distributor in contact with at least first and second arms distributes to the second arm at least a portion of force received by the first arm's tooth while the first arm's tooth meshes with a tooth on the second gear. In one embodiment, the load distributor comprises an insert within the slot between the first and second arms. | 04-07-2011 |
| 20110088496 | HARMONIC DRIVE USING PROFILE SHIFTED GEAR - A harmonic drive according to the present invention comprises a plurality of internal gears; a band type of flexible gear provided with teeth engaged with each of the internal gears on its outer circumferential surface, the flexible gear having a pitch circumference length shorter than that of said internal gears; and a wave generating part disposed on an inner side of said flexible gear, the wave generating part generating a plurality of harmonic motions by deforming said flexible gear as the wave generating part rotates. Further, said flexible gear is formed integrally to engage with said plurality of internal gears so that the plurality of harmonic motions are overlapped, and one or more of said plurality of internal gears and said flexible gear are formed of profile shifted gears. | 04-21-2011 |
| 20110132116 | SPROCKET WITH DAMPER AND COMPENSATOR - A sprocket unit comprising: a damper mounted on the first shaft with a first face defining a recess and a second face defining chambers for receiving spring loaded weights; a sprocket mounted to the first shaft with a hub defining an aperture and a slot; a front end plate mounted on the shaft with a hub defining an aperture aligned with the aperture of the sprocket; and a spring received within the aperture of the sprocket, the aperture of the front end plate, and the recess of the damper. When the first shaft rotates and firing frequency of the engine coincides with a resonant frequency of the first shaft, the spring loaded weights slide in the chambers of the damper, dampening out the resonant frequency in the first shaft and when the sprocket rotates the spring compresses and extends, reducing torsional load of the first shaft on the second shaft. | 06-09-2011 |
| 20110219894 | Torque Transmission Assembly, Particularly For The Drivetrain Of A Vehicle - A torque transmission assembly includes two structural component parts for coupled engagement to one another so as to rotate together around an axis of rotation, a first of these structural component parts has an inner circumferential toothing and a second of these structural component parts has an outer circumferential toothing for a rotary coupling engagement with the inner circumferential toothing. The teeth in one toothing of an inner circumferential toothing and outer circumferential toothing are bounded by end faces in a first axial end area of the one toothing. The one toothing has at least one tooth with an end face which is extended forward axially relative to the end faces of the other teeth of the one toothing, and the end face of at least one tooth of the one toothing with the end face which is extended forward axially forms a circumferentially deflecting end face for the other toothing. | 09-15-2011 |
| 20120085188 | NONCIRCULAR BEARING, WAVE GENERATOR, AND WAVE GEAR DEVICE - A wave generator ( | 04-12-2012 |
| 20120118092 | REDUCING MECHANISM AND HARMONIC DRIVE THEREOF - A harmonic drive includes a circular rigid internal gear, a circular flexible external gear, a wave generator, a cover, and a fan blade. The circular flexible external gear is disposed in the circular rigid internal gear, and the wave generator has at least one through hole and is disposed in the circular flexible external gear. The cover and the fan blade are respectively disposed at two opposite sides of the wave generator, and the cover is located in the circular flexible external gear. The cover and the wave generator form an air chamber together, and the through hole and an air flow opening are respectively in communication with the air chamber. The wave generator operates to drive the fan blade to operate. The fan blade rotates to generate an air flow, thus performing heat dissipation on the harmonic drive. | 05-17-2012 |
| 20120227527 | IMPACT ABSORBING MECHANISM OF GEAR TRAIN - An impact absorbing mechanism for absorbing impact generated upon meshing of gears by starting or stopping an electric motor, for example, in a speed reduction gear train of a disk grinder, has the problem that its ease of manufacture and the durability are lowered because small elastic components are located between a driven gear and a driven shaft when an impact absorbing action occurs in the rotational direction in the related art. The present invention is aimed to improve the ease of manufacture and the durability of the impact absorbing mechanism. It is configured to absorb impact by displacing steel balls in a diameter expanding direction by relative rotation of a driven gear and a driven shaft due to rotational power generated upon meshing and by displacing an axial displacement member in an axial direction against an axial elastic member. | 09-13-2012 |
| 20120285280 | TRANSMISSION ASSEMBLY - A transmission assembly including a frame, driving and driven shafts, driving and driven gears and a knob is provided. The shafts are pivotally connected to the frame, and axes of the driving and driven shafts are intersected mutually. The driving gear is disposed at an end portion of the driving shaft, and the driven gear is disposed at an end portion of the driven shaft to engage with the driving gear. The knob is disposed at another end portion of the driving shaft for receiving torque to conduct the rotation of the driving and driven shafts and the driving and driven gears. When the torque is excessively large, the knob rotates against the driving gear, so the torque will not be transmitted to the gears. Moreover, when the gears are stuck, one of the driving and driven gears can move along the axis to increase backlash therebetween. | 11-15-2012 |
| 20130008272 | Gear rim with elastic cassettes - The invention relates to machine building and may be used in large-size mechanism drives. A gear rim comprises a centre which is a whole piece or comprises at least two sectors. At least two elastic tooth cassettes are located on the sectors, each comprising an elastic metal sheet plate with cut teeth and a plate fixture system upon the centre. The invention allows to significantly increase the service life and reduce the total weight of the structure. | 01-10-2013 |
| 20130025392 | POP-UP MONITOR WITH DOUBLE RACK GEAR STRUCTURE - A pop-up monitor is provided. A pop-up monitor with a double rack gear includes a driving unit, a rack gear set, and a monitor frame. The driving unit includes a spur gear set having first and second spur gears, and generates first and second rotational motions with the first and second spur gears. The rack gear set includes an outer gear with a rail groove in one surface thereof along, changing the first rotational motion to a first rectilinear motion, and an inner gear with a rail rail-coupled to the rail groove changing the second rotational motion to a second rectilinear motion. The monitor frame includes a support frame supporting a monitor. The monitor frame is fixed by the inner gear which vertically ascends by the second rectilinear motion without forward and rearward movement when the support frame has vertically ascended to a position according to the first rectilinear motion. | 01-31-2013 |
| 20130025393 | DOUBLE RACK GEAR STRUCTURE FOR SUPPORTING POP-UP MONITOR - A gear structure for supporting a vertical motion of an electric pop-up monitor is provided. More specifically, a double rack gear structure for supporting a pop-up monitor is disclosed. The rack gear structure includes an outer gear and an inner gear. The outer gear is coupled at a side of the monitor frame to operate integrally with the monitor frame, and enables the vertical motion of the monitor frame with an ascending or descending motion. The inner gear is received inside the outer gear. The inner gear performs an ascending or descending motion simultaneously with the outer gear, and supports forward and rearward or right and left shaking, which occurs in the outer gear, by maximizing a portion overlapping with the outer gear when the outer gear has ascended to the maximum. | 01-31-2013 |
| 20130081494 | BREAKING DEVICE FOR A CHAIN OF A SCREEN SUCH AS A WINDOW COVERING - The invention relates to a breaking device for a chain ( | 04-04-2013 |
| 20130220044 | SLAT CONTROLLER OF WINDOW BLIND - A slat controller for a window blind has a gear, a worm member, and a connector. The gear connects to slats through cords, and the worm member having spiral teeth meshed with the gear. The connector has flexible arms, and the flexible arms have teeth. The worm member has teeth normally engaging the teeth of the connector, and the teeth of the worm member disengage the teeth of the connector to protect the meshed gear and the worm member when the user keeps turning the tilting rod beyond the allowable turning range. | 08-29-2013 |
| 20130319150 | OVERLOAD PROTECTION - An overload protection device in combination with a prime mover and gearbox transmission supplies torque through a gearbox transmission to a load. An input shaft with is driven by the prime mover and rotates therewith. An external spline on the input shaft mates with an input gear having an internal spline. Upon overload of the gearbox transmission, the input shaft fractures an annular groove in the input shaft. A bushing prevents travel of the portion of the input shaft which is driven by the prime mover and which continues to spin after the fracture. | 12-05-2013 |
| 20140290408 | VIBRATION ISOLATING STRUCTURE FOR POWER UNIT - A vibration isolating structure for a power unit. The power unit includes an internal combustion engine equipped with transmissions. The vibration isolation structure includes torque dampers disposed between transmission gears of the transmission and a power transmission shaft supporting the transmission gears. | 10-02-2014 |
| 20150143937 | GEAR DEVICE - A damper structure for a gear device includes a first gear ( | 05-28-2015 |
| 20160003197 | DRIVE ARRANGEMENT FOR AN ASSEMBLY OF AN INTERNAL COMBUSTION ENGINE, AND EXHAUST-GAS RECIRCULATION VALVE - A drive arrangement for an aggregate of an internal combustion engine includes a drive element, a housing, and an intermediate element. The housing comprises a static receiving part comprising a stop, and a cover fastened on the static receiving part. The cover is configured to bear axially against the stop. The intermediate element is arranged, in a preloaded state, between the drive element and the housing, radially between the cover and the drive element, and, in an elastically deformed state, axially between the drive element and the cover. | 01-07-2016 |
| 20160138696 | GEARWHEEL ARRANGEMENT - The invention relates to a gearwheel arrangement ( | 05-19-2016 |
