| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 074424880 | Interconnected or cooperating rollers or roller structure | 11 |
| 20080229857 | Ball Screw - A ball screw has a screw shaft, a nut, and balls running in a circulating manner along a ball rolling groove of the screw shaft and a ball rolling groove of the nut. A circulating portion ( | 09-25-2008 |
| 20100050802 | BALL SCREW MODULE - Provided is a ball screw module including a screw shaft, a nut member, a ball connector, and a circulating device inside the nut member. The screw shaft and the nut member constitute a first load rolling groove. The circulating device, being connected with the first load rolling groove, has a first turning section and a second turning section, and includes a first guiding groove and a second guiding groove. The first guiding groove has a radius of curvature greater than that of the second guiding groove when the ball connector passes the first turning section. The first guiding groove has the radius of curvature smaller than that of the second guiding groove when the ball connector passes the second turning section. | 03-04-2010 |
| 20100122597 | Ball screw - A ball screw comprises a shaft, a nut, two return elements, plural rolling elements and a sleeve. When being rotated, the shaft will drive the nut to move and circulate the rolling elements within a circulation path defined by a loaded path and the return passages of the return elements. The nut is provided with a circular groove in an outer circumferential surface thereof, and the sleeve is disposed in the circular groove. The sleeve is provided with plural push grooves in an inner circumferential surface thereof, and there is an angular difference between a rolling passage in the nut and the respective push grooves, and the push grooves cooperate with the rolling elements which pass through the rolling passage. By such arrangements, the push grooves of the sleeve will be pushed by the rolling elements to convert the linear motion into rotary motion, thus making the sleeve rotate. | 05-20-2010 |
| 20100206115 | LINEAR BEARING ASSEMBLY WITH SPHERICAL ROLLERS - A linear bearing employs spherical roller bodies which are contained in a roller nut body with two drive helixes and two return helixes which form a continuous loop in the nut body. The return helixes are offset from the drive helixes and have a pressure relief cutout to allow for movement of the spherical roller bodies through the return helix region. | 08-19-2010 |
| 20110023641 | Chain Type Transmission Assembly - A chain type transmission assembly doesn't have the problem that the chain interferes with the transmission assembly, the thickness of the links of the chain of the transmission assembly is precisely calculated by an equation, so that the chain can be prevented from interfering with the outer surface of the screw, thus substantially improving the efficiency and service life of the transmission assembly. | 02-03-2011 |
| 20110023642 | Motion Transmission Apparatus with a Chain - A motion transmission apparatus with a chain, wherein the chain comprises a plurality of spacers and two links two links at both sides of the respective spacers for connecting spacers together. The spacers are equidistantly spaced from one another by a receiving space which is longitudinally asymmetrical and provided for holding rolling elements. | 02-03-2011 |
| 20110120248 | Chain Type Ball Screw - A chain type ball screw has a chain received in a circulation path of the ball screw, and the chain comprises a plurality of partition portions and a connecting portion for connecting the partition portions, a plurality of rolling elements are retained in the chain in such a manner that between each two neighboring partition portions is arranged a rolling element, each of the rolling elements is partially in contact with the return passage of each of the return assemblies to define receiving spaces in the return passage for accommodation of the connecting portion, so that the chain can be moved more smoothly in the return passage, and the manufacturing cost of the return assembly is reduced. | 05-26-2011 |
| 20110296940 | MOTION TRANSMISSION APPARATUS WITH A CHAIN - A motion transmission apparatus with a chain, wherein the chain comprises a plurality of spacers and two links two links at both sides of the respective spacers for connecting spacers together. The spacers are equidistantly spaced from one another by a receiving space which is longitudinally asymmetrical and provided for holding rolling elements. | 12-08-2011 |
| 20120006136 | LINEAR MOTION TRANSMISSION APPARATUS WITH A CHAIN - A linear motion transmission apparatus with a chain comprises at least one flexible link and a plurality of spacers, the spacers are equidistantly spaced apart and connected by the link, each two neighboring spacers define a holding space for holding rolling elements, each of the spacers has two separated arcuate retaining portions used to contact and hold the rolling elements. A lubricating-oil passage is formed between each of the spacers and the rolling elements to guide the lubricating oil from the non-load area of the outer surface of the rolling element to the load area, allowing the load area to be lubricated sufficiently. | 01-12-2012 |
| 20120137808 | Roller element retainer for ball screw device - A motion guide device includes a ball nut attached onto a shaft and having helical grooves for forming a ball guiding raceway between the ball nut and the elongated shaft and for receiving ball bearing elements, a circulating device attached to the ball nut and having a pathway communicative with the raceway for forming an endless ball guiding passage between the ball nut and the elongated shaft and the circulating device and for engaging with bearing elements, and a retaining device includes a shorter chain for engaging into the helical grooves or raceway of the screw shaft and the ball nut, and a longer chain for engaging into the pathway of the circulating device. | 06-07-2012 |
| 20120304793 | Ball Screw - A ball screw has a chain received in a circulation path of the ball screw, and the chain comprises a plurality of partition portions and a connecting portion for connecting the partition portions, a plurality of rolling elements are retained in the chain in such a manner that between each two neighboring partition portions is arranged a rolling element, each of the rolling elements is partially in contact with the return passage of each of the return assemblies to define receiving spaces in the return passage for accommodation of the connecting portion, so that the chain can be moved more smoothly in the return passage, and the manufacturing cost of the return assembly is reduced. | 12-06-2012 |
