| HYUNDAI WIA CORPORATION Patent applications |
| Patent application number | Title | Published |
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| 20120132500 | Transfer Case With Clutch Actuator - A transfer case for vehicles comprises: a first output shaft; a second output shaft; a clutch assembly disposed at the second output shaft, the clutch assembly including inner and outer drum members, one of the inner and outer drum members rotatable in association with rotation of the first output shaft and the other one of the inner and outer drum members coupled with the second output shaft, the clutch assembly further including a plurality of frictional clutch plates, the frictional clutch plates formed of at least one frictional clutch plate coupled with the inner drum member and at least one frictional clutch plate coupled with the outer drum member; an actuator shaft rotatably coupled with an actuator; and a clutch actuator means coupled with the actuator for applying axial force to the frictional clutch plates to transmit a drive torque of the first output shaft to the second output shaft. | 05-31-2012 |
| 20120090428 | Dual Clutch Transmission And Dual Clutch Accuators Thereof - A dual clutch transmission with multiple gears operatively coupled thereto, comprises: first and second input shafts coaxially arranged to each other; a first clutch operatively coupled with the first input shaft to drive the transmission with a gear selected from a first set of non-consecutively numbered gears; a second clutch coaxially arranged with the first clutch and operatively coupled with the second input shaft to drive the transmission with a gear selected from a second set of non-consecutively numbered gears; first and second clutch actuating devices, each including an actuator and a pivot member, each pivot member operatively coupled between the actuator and a clutch applicator of cylindrical shape to move its clutch applicator for clutch operation; and a plurality of first and second clutch levers received in a clutch retaining housing in a circularly and alternately arranged pattern. The first and second clutch levers are configured to move the first and second clutches, respectively. The cylindrically shaped clutch applicator of the first clutch actuating device is disposed coaxially with the cylindrically shaped clutch applicator of the second clutch actuating device, and the first clutch levers and the second clutch levers can operate independently to each other upon movement of the first clutch applicator or the second clutch applicator to perform a selective clutch operation between the first and second clutches. | 04-19-2012 |
| 20110252920 | Gear Shifting Actuator and Method of Shifting Gear Ratios - A gear shifting device for shifting gears of a transmission comprises: at least one guide rail each extending in a longitudinal axis thereof; a plurality of shift effecting members (e.g., shift forks or the like) configured to move a plurality of corresponding sliding sleeves coupled to the guide rail for shifting gears upon actuation of a shift actuator, the shift effecting members each having a terminal end portion with a finger receiving opening formed therein, the finger receiving opening extending in a direction generally parallel to the longitudinal axis of the guide rail; and a shift shaft extending in a direction generally parallel to the longitudinal axis of the guide rail, the shift shaft having a shift finger coupled thereto. The shift shaft is rotatable to pivotally position the shift finger at locations aligned with the finger receiving openings of the shift effecting members, and is also displaceable in the longitudinal direction in the finger receiving openings to move the shift effecting members to effect a gear shifting operation. Methods of shifting gears with a gear shifting device are also disclosed. | 10-20-2011 |
| 20110159969 | TRIPOD TYPE CONSTANT VELOCITY JOINT - A tripod type constant velocity joint comprises a housing having three track grooves defined at trisected positions of the housing and extending in an axial direction, and a spider having three trunnions projectedly formed at trisected positions of the spider to be respectively inserted into the track, each trunnion having at least two polygonal surfaces at each of two opposing sides subjecting to a load. Inner rollers each has an inner surface of a concavely curved contour for receiving a corresponding trunnion therein, and an outer is mounted to each inner roller with a plurality of needle rollers engaged therebetween. | 06-30-2011 |
| 20110092299 | Cross Groove Type Constant Velocity Joint - A constant velocity joint for a drive system comprises: an outer joint member having a plurality of inwardly facing outer ball grooves, the outer ball grooves consisting of a first group of grooves, each groove of which having a skewed groove shape with a first skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of outer joint member, and a second group of grooves, each groove of which having a skewed groove shape with a second skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of outer joint member, the second skew angle less than the first skew angle; and an inner joint member disposed inside the outer joint member and having a plurality of outwardly facing inner ball grooves consisting of a first group of grooves, each groove of which having a skewed groove shape with a first skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of inner joint member, and a second group of grooves, each groove of which having a skewed groove shape with a second skew angle other than zero and alternately arranged in opposite directions relative to an axis of rotation of inner joint member, the second skew angle less than the first skew angle, each inner ball groove of the inner joint member being coupled with a corresponding outer ball groove of the outer joint member generally in crossed pair. In addition to the differentiated skew angles, the contact angles of the balls in the first and second group of grooves and other configurations may also be differentiated. | 04-21-2011 |
| 20110070955 | Cross Groove Type Constant Velocity Joint with Composite Groove Patterns - A constant velocity joint for a drive system comprises: an outer joint member having a plurality of inwardly facing outer ball grooves, the outer ball grooves consisting of a first group of grooves and a second group of grooves with composite or non-linear groove pattern; an inner joint member disposed inside the outer joint member and having a plurality of outwardly facing inner ball grooves consisting of a first group of grooves and a second group of grooves with composite or non-linear groove pattern, each inner ball groove of the inner joint member being coupled with a corresponding outer ball groove of the outer joint member generally in crossed pair; and a cage having circumferentially displaced cage windows to accommodate a plurality of balls therein. The groove patterns of the ball grooves can be a combination of skewed grooves and non-linear grooves, a combination of non-linear grooves such as a curved groove or a compositely shaped groove, or a combination of linear grooves and non-linear grooves. | 03-24-2011 |
| 20110070954 | Cross Groove Type Constant Velocity Joint - A constant velocity joint for a drive system comprises an outer joint member and an inner joint member each having a plurality of ball grooves in pairs for accommodating balls therein, the ball grooves consisting of a first group of grooves, each groove of which having a linear groove shape with no skew angle or a skewed groove shape with a relatively smaller skew angle, and a second group of grooves, each groove of which having a skewed groove shape with a relatively larger or regular skew angle. In addition to having the differentiated skew angles in the first and second groups of grooves, a taper angle is provided to the pair of grooves of at least one or both of the first and second groups of grooves in order to reduce the potential risk of ball locking in the grooves. In an alternative embodiment, all the grooves of the outer and inner joint members have a skewed groove shape with a skew angle which is less than the regular skew angle of the conventional cross groove joint, and a taper angle is provided to the pairs of grooves of the outer and inner joint members. | 03-24-2011 |
