| Nippon Thompson Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120076447 | BALL-SPLINE WITH ROTARY MECHANISM - A ball-spline with rotary mechanism is provided which is as small as possible in size, able to perform high-precision works on a small scale and also weighs less than ever, helping the downsizing of the component-placement systems. The ball-spline has a spline shaft, a slider movable along the spline shaft through balls, and bearings installed on the opposite ends of the slider for rotation relative to a machine bed. The holder has a pair of projections which extend through slots in the spacer parts and slots in the end-cap major body to fit into slots in a carriage. Fastening screws fit into threaded holes in the projections to fasten the holder to the opposite ends of the slider. | 03-29-2012 |
| 20120014628 | LINEAR MOTION GUIDE UNIT WITH CAGE - A linear motion guide unit is described in which a cage plate in itself and of itself can retain rollers in place so as to facilitate and simplify handling of the rollers and other parts on manufacture and assembly phases. In addition, the linear motion guide unit has the constructional feature in that the smaller pitch between the center-lines of adjacent rollers installed in a cage results in the greater number of the rollers lying in a preselected length of the cage to get heavier load-carrying capacity. The cage plate has openings to retain the rollers therein which are arranged in the lengthwise direction of the cage plate. Each of the openings has a contour whose major axis lies in a widthwise direction of the cage plate. The openings have therein bearing lips to retain axially opposite end surfaces of the rollers, the bearing lips extending inside from an edge around the opening at locations corresponding with diametrically opposite ends of the major axis. The bearing lips end into wedged bearing edges deformable elastically. The bearing edges have bearing slants adapted to conform to the end surfaces of the roller to bear the roller thereon. The bearing slants are in diametrically symmetric relation to each other. | 01-19-2012 |
| 20110291494 | THREE-DIMENSIONAL SLIDING SYSTEM WITH ONBOARD LINEAR MOTOR - A three-dimensional sliding system has an X-table and a Z-table, which are actuated to travel independently of each other. The sliding system is simple in construction and adapted to actuate a movable table with less takt time. A bed has a first flat zone extending in a horizontal direction to carry the X-table thereon, a second flat zone extending in a vertical direction to carry the Z-table thereon, and a third flat zone where the first flat zone merges with the second flat zone. The movable table is laid over the third flat zone and linked with the X-table and the Z-table through linear motion guide units, respectively. Actuations of an X-linear motor in an X-direction and actuation of a Z-linear motor in a Z-direction cause the movable table to move into a targeted position with high precision in the X-direction and in the Z-direction. | 12-01-2011 |
| 20110254233 | SIDE SEAL FOR LINEAR MOTION GUIDE UNIT - The need for a related-art nipple | 10-20-2011 |
| 20110176754 | LINEAR MOTION GUIDE UNIT - Lubrication for rolling elements are made in a turnaround passage in an end cap to ensure proper and steady lubrication by the lubrication system simple in construction, with accompanying sustainable maintenance-free condition for lubrication. The end cap has an inward end surface facing directly towards the end surface of the carriage of the slider and having a concavity which sinks below the inward end surface and has openings communicating with the turnaround passages. A porous compact impregnated with lubricant is fitted into the concavity in a fashion exposed in part to the turnaround passage through the openings so that the rolling elements rolling through the turnaround passages, as coming into rolling-contact with the parts of the porous compact exposed out of the openings, are applied with the lubricant. | 07-21-2011 |
| 20110061974 | Lubricating Apparatus For Follower Bearing - A leaf spring (S) and a lubricating member (L) are combined together and then mounted. The lubricating member (L) has a pair of protrusions ( | 03-17-2011 |
| 20100329595 | Linear Motion Guide Unit - The sliding mechanism including rolling elements | 12-30-2010 |
| 20100247007 | LINEAR MOTION GUIDE UNIT WITH MEANS FOR KEEPING CAGE AGAINST STRAYING OR WANDERING - A pinion-holder assembly is compact in size to fit easily within a transverse area of a raceway defined between raceway grooves on guideway members. The pinion-holder assembly is preferable to fit securely into a cage plate with ease, helping lessen required number of parts, simple and compact in construction, and less costly to fabricate. A holder has sides bulged widthwise into triangular shapes in transverse section to closely conform to the raceways on the guideway members and recesses lying in the lengthwise direction at apexes or ridges of the triangular shapes. A cage plate has a window of rectangular shape longer in sides in the lengthwise direction of the cage plate, and the longer sides have fringes somewhat raised inside the window so as to fit into the recesses on the holder, hereby fastening the holder to the cage plate. | 09-30-2010 |
| 20100139426 | ACTUATOR - An actuator has a frame and a slider body which are both made of extruded shapes of light-metal alloy. A first rail member is fastened to the frame by means of a simple construction. An upper sealing member is placed between the frame and the slider body. With the actuator constructed as stated earlier, the frame is an elongated extrusion of U-shape in transverse section whose side walls have first recesses of dovetail configuration to fit over first rail members and flanges. A slider has therein the slider body having second recesses of rectangular shape to fit over second rail members. There is further provided a driving unit to force the slider with respect to the frame. The first rail members each have the wedged configuration including tapered contours and dents, while the second rail members each have the rectangular shape. | 06-10-2010 |
| 20100074564 | LINEAR MOTION GUIDE SYSTEM WITH WIPER SEAL - A wiper seal is less in sliding resistance that is encountered when the seal slides over a raceway surface of a guide rail, better in wear-proof quality, rich in durability, and further easy to steadily install it to a slider. The wiper seal is installed on one end of the slider in a linear motion guide system to wipe away foreign materials adhered on the guide rail. The wiper seal is made of polyester polyurethane foam having a reticular skeleton texture of three-dimensional construction including open-cells therein, the polyester polyurethane foam being squeezed or compressed into from ΒΌ to 1/20 in thickness to form a compact blank of three-dimensional construction having porosity therein. The wiper seal is set to come into sliding contact with the guide rail | 03-25-2010 |
| 20100033169 | Position Detector - A position detector can correct a position for detecting a moving object without changing a physical location of a moving mechanism, a Hall element and/or the like. Either a permanent magnet | 02-11-2010 |
| 20100002965 | Lubricating Member For Linear Motion Rolling Guide Unit And Slider For Linear Motion Rolling Guide Unit - A lubricant can be evenly applied onto raceway faces or raceway grooves of a rail even when fixed to a horizontal, vertical, tilted, or ceiling surface. One or a plurality of embedding portions | 01-07-2010 |
| 20090297081 | ULTRATHIN CROSS-ROLLER BEARING - An ultrathin cross-roller bearing composed of outer and inner rings, more than one roller rolling through between the outer and inner rings, and a separator interposed between any two adjoining rollers. With the ultrathin cross-roller bearing constructed as stated earlier, the separator lying between the adjoining rollers is in the form of right cylinder better for keeping constantly the roller in proper posture, getting the bearing itself downsized and lightweight as small as possible, and further making sure of positive lubrication. The outer and inner rings are each made into one-piece construction. The inner ring has an inside diameter in a range of from 20 mm to 50 mm. The roller used in the ultrathin cross-roller bearing has a diameter of 2 mm to render a transverse section given by a product of a radial height and a bearing width in transverse section small or ultrathin in thickness. | 12-03-2009 |
| 20090245703 | LINEAR MOTION GUIDE UNIT - A linear motion guide unit has a binding strip adapted to fasten a retainer plate to a carriage miniature in dimension, but long in lengthwise direction. The linear motion guide unit has a retainer plate lying lengthwise of the carriage in opposition to load-carrying race to keep more than one roller running through the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The binding strip is composed of a major part having any number of bents which are positioned at regular intervals in the longitudinal direction of binding strip, and lengthwise opposite angled parts prepared to come into engagement with the end caps, so that the binding strip urges elastically at the bents thereof the retainer to come into close engagement with carriage. | 10-01-2009 |
| 20090245701 | Linear Motion Guide Unit - By reducing the component count, a more compact linear motion guide unit having sealing structures capable of maintaining high sealing performance between slider and guide rail over a long term is realized. A rubber-made end seal, attached to each end face of a slider slidably straddling a guide rail, has a lip portion integrally formed on a contact face with the guide rail, and a recessed portion formed in a face opposite to a mounting face attached to the slider. A positional relationship is determined such that the lip portion is located closer to the slider than the recess bottom face is. An oil-impregnated wiper seal is mounted in the recessed portion of the end seal. A scraper is disposed along the outer side of the wiper seal mounted in the recessed portion, so that the wiper seal is fixedly interposed between the scraper and the recess bottom face. | 10-01-2009 |
| 20090243432 | Movable Table Unit - A movable table unit provided here has a simple structure but can increase the precision of detecting the displacement of a movable table, and comprises a ring-shaped stationary base | 10-01-2009 |
| 20090230785 | SLIDING SYSTEM WITH ONBOARD MOVING-COIL LINEAR MOTOR - A sliding system with onboard moving-coil linear motor is disclosed in which an armature assembly is a printed-circuit board, armature windings of flat configuration and coil stay having a stay and any number of cores made integral with the stay. The armature assembly is held by virtue of the stay at a preselected location inside an interval defined between field magnet arrays and, therefore, is small and compact in height in transverse section. A bed formed in an angled hook-like configuration in a transverse section contributes to shrinkage of the sliding system in either of height and width in transverse section or most compactness of the sliding system in transverse dimension. Moreover, the bed can be selected in length at discretion according to the purpose of usage to provide any desirable stroke length for a single table of a preselected length, getting the sliding system convenient for usage. | 09-17-2009 |
| 20090183586 | Small Slider Unit - For achievement of a reduction in size, a slider unit comprises a mounting base | 07-23-2009 |
| 20090097790 | Bearing For Four-Cycle Engine - A bearing capable of enduring long use in a four-cycle engine is provided. The bearing is provided with a hollow cylindrical retainer | 04-16-2009 |
| 20090092344 | Small Slider Unit - A small slider unit having a size effectively reduced in the longitudinal direction is equipped with a rail | 04-09-2009 |
| 20090074335 | Slider For Linear Motion Rolling Guide Unit - A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A turning corner | 03-19-2009 |
| 20090060400 | Slider For Linear Motion Rolling Guide Unit - A slider for a linear motion rolling guide unit can ensure a smooth rolling movement and a reliable lubricating capability and eliminate the need for accurate dimension control to reduce the manufacturing costs. A lubricating member A has a lubricating face | 03-05-2009 |
| 20090016654 | LINEAR MOTION GUIDE UNIT WITH ROLLER - A linear motion guide unit is envisaged smooth transfer of a roller from a turnaround passage to a return passage and vice versa across a joint between the turnaround passage and the associated return passage. Protrusions extending stepwise from an end of the turnaround passage come into complementary fit joints with an associated end of a tubular member defining the return passage to make wall surfaces to guide axially opposite ends of the roller, in which the joints are staggered or different in their locations between wall surfaces. The return passage is defined with a fore-and-aft hole of rectangular shape in transverse section inside a tubular member that fits into a bore made in the carriage. The tubular member is joined at lengthwise opposite ends thereof together to the protrusions that are raised above end surfaces of the end caps to extend the turnaround passage into the bore. Edges of the protrusions come into complementary fit joints with the associated ends of the tubular member to provide wall surfaces to guide axially opposite ends of the roller. | 01-15-2009 |
| 20080298729 | LINEAR MOTION GUIDE UNIT WITH ROLLERS - A linear motion guide unit with high stiffness, high accuracy and long-lasting service life is provided in which a rolling element is a roller and a carriage of a slider is made long to allow a crowning profile to be long. The carriage has an overall length equivalent to substantially four times a width of a guide rail. The carriage is made thereon with a raceway surface that is modified near lengthwise opposite ends thereof crowning profiles each of which has a crowning length equivalent to four times as long as a diameter of the roller and also has a crowing depth equivalent to an amount of elastic deformation that occurs in the raceway surfaces and the roller when the slider undergoes a load reaching a half of a static nominal standard load. | 12-04-2008 |
| 20080285899 | LINEAR MOTION GUIDE UNIT - A linear motion guide unit is disclosed in which an end cap of a slider has a tube therein to feed even minor amounts of lubricant into a circulating circuit for rollers with no lubricant leakage, making sure of positive lubrication irrespective of working orientations or postures of the linear motion guide unit. A flexible tube made of fluorocarbon polymers is installed in the end cap to run from a lubricant inlet to a turnaround passage, thereby providing a lubricant-supply passage. A distal end of the tube fits into a three-way member made open to the turnaround passage on a spacer part, which is nested inside the end cap. | 11-20-2008 |
| 20080279489 | LINEAR MOTION GUIDE UNIT WITH INSIDE SEAL - A linear motion guide unit makes sure of smooth sliding movement of a slider over a guide rail even under harsh working environment in which much foreign materials or contaminants may occur. Load-carrying races are kept free of foreign materials that have already creped into the inside of the slider. An inside seal is installed in a recess open downward in the slider. The inside seal is composed of a metallic core and a sealing member that includes a joint portion secured to the metallic core and a major portion integral with the joint portion. The joint portion has a mating surface to come into engagement with a downward surface deep inside the recess cut in a carriage while the major portion includes a first lip to come into sliding engagement with a top surface of the guide rail, a second lip come into abutment against an inward sidewall of the recess, and third lip to come into abutment against a downward surface deep inside a recess cut in an end cap. | 11-13-2008 |
| 20080260307 | LINEAR MOTION GUIDE UNIT - An interlocking construction between an end cap and a retainer plate to support rollers in a load-carrying race is made to provide an endless circulating circuit with no gap to allow the rollers smoothly rolling through there with keeping adequate posture. The slider has a carriage, end caps, rollers rolling through a circulating circuit, a retainer plate extending along the load-carrying race to keep the rollers inside the load-carrying race, and a binding strip to fasten the retainer plate to the carriage. The retainer plate comes into connection with spigots extending out of the end caps. Lengthwise opposite ends of the retainer plate conform to associated ends of the spigots in complementary to fit over the associated ends of the spigots in a sliding direction. Especially, butting extremities of the retainer plate and the associated spigots are made beveled ends in complementary relation to one another aslant in the sliding direction. | 10-23-2008 |
| 20080260306 | Linear Motion Rolling Guide Unit - A linear motion rolling guide unit, which has underside seals prevented from falling off a slider, comprises a slider S having a pair of end caps | 10-23-2008 |
| 20080232724 | Lubricating Member For Linear Motion Rolling Guide Unit And Slider For Linear Motion Rolling Guide Unit Using The Lubricating Member - A lubricating member is capable of being used in any type of linear motion rolling guide unit and of appropriately lubricating raceway faces over a long period. The lubricating member used in a linear motion rolling guide unit comprises a body | 09-25-2008 |
