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| Number | Title | Issue Date |
| 8439338 | Rotary table device provided with cooling structure and rotary bearing provided with cooling structure A rotary table device includes a cooling structure and a rotary bearing provided with a cooling structure. A rotary table device provided with a cooling structure includes a hollow motor as a drive source, a table rotated by the hollow motor, and a rotary bearing su... | 05/14/2013 |
| 8419280 | Thin slide unit Provided is a thin slide unit which allows, in a case where two ball plates each formed with a track-like ball groove are combined to thereby construct an endless circulation path for balls, by merely directly connecting the two ball plates without using a guide pla... | 04/16/2013 |
| 8418573 | Ball-screw spline A ball-screw spline includes: a screw shaft; a ball-screw nut engaged with the screw shaft via balls; and a spline nut assembled to an outside of the ball-screw nut via balls to reciprocate in an axial direction of the ball-screw nut. The ball-screw nut includes a s... | 04/16/2013 |
| 8414190 | Track rail and motion guidance apparatus including the track rail Rigidity and precision of a motion guidance apparatus are increased by improving track rail shape. A track rail has at least two rolling member rolling grooves (RMRGs) on the upper surface and at least one RMRG on each side surface, the RMRGs extending in the longit... | 04/09/2013 |
| 8408087 | Screw device with sound insulating member The present invention provides a screw device enabling insulation of sounds occurring from the inside of the screw device when circulating rolling elements. The screw device includes: a screw shaft 1 having a spiral rolling-element rolling groove 1 | 04/02/2013 |
| 8390153 | Linear motor and method of manufacturing the same Provided is a linear motor capable of simplifying assembling of a coil unit and stabilizing a coil pitch and the overall length of the coil unit. The linear motor has a rod 1 having magnets 3, a plurality of coils 4 arranged in the axial ... | 03/05/2013 |
| 8382374 | Sealing member for rolling device and rolling device A sealing member for a rolling device is applied to a rolling device with inner and outer members and a plurality of rolling members between so the rolling members can roll to allow relative rotational or linear movement of the outer member with respect to the inner... | 02/26/2013 |
| 8375815 | Rolling element screw device A rolling-element screw device includes: a large number of rolling elements; a screw shaft having an outer periphery on which a rolling groove for the large number of rolling elements is helically formed; a nut member which has a through-hole through which the screw... | 02/19/2013 |
| 8362720 | Linear motor position detection system A position detection system includes a linear motor having a rod in which magnetic poles of N pole and S pole are arranged alternately in an axial direction and a plurality of coils surrounding the rod a magnetic sensor for detecting change in the direction of the m... | 01/29/2013 |
| 8348217 | Base isolation table with damping mechanism and base isolation table unit using the same Provided are a vibration isolating table (1) with damping mechanism having initial rigidity so that a vibration isolation subject is not swayed under a state in which no vibrations act, and configured to function in a case where vibrations act so that the vib... | 01/08/2013 |
| 8336415 | Roller screw Provided is a roller screw capable of preventing rollers moving from an unloaded return path to a loaded roller rolling path from coming into collision with a scooping portion. The roller screw has: a screw shaft 1 having a spiral roller rolling surface 1 | 12/25/2012 |
| 8336414 | Roller screw and method of designing unloaded roller return path thereof Provided is a roller screw having an unloaded roller return path of new shape capable of moving rollers smoothly. The roller circulation path of the roller screw has the unloaded roller return path and a loaded roller rolling path. The unloaded roller return path | 12/25/2012 |
| 8334669 | Multi-axis driver control method, multi-axis driver and multi-axis drive control system having the same In the multi-axis driver control method for transmitting a command from an external device to the drive-axis basis controller of the multi-axis driver to set operation and/or parameters of the drive-axis basis controller, the external device is connected to the mult... | 12/18/2012 |
| 8316776 | Rotary bearing, rotary table device and table diameter determining method A rotary table device includes a hollow motor drive source, a table rotated thereby, and a rotary bearing supporting the table. The rotary bearing is provided an outer race having an inner surface to which a rolling surface is formed, an inner race having an outer p... | 11/27/2012 |
| 8310182 | Linear synchronous motor control method and control apparatus It makes possible to control a movable element to be smoothly movable by a sensor-less vector control in an equal speed area, without using a position sensor, and possible to perform a stop control and control it in a low speed area. In a case when a moving speed of... | 11/13/2012 |
| 8302498 | Sealed linear actuator unit A linear actuator unit has a slide plate which is allowed to freely move along the outer rail while causing a cover to retreat. The linear actuator unit includes: an outer rail, which is formed into a cylindrical shape, and includes the slit-opening portion formed a... | 11/06/2012 |
| 8282282 | Motion guide device and method of assembling motion guide device A motion guide device is able to damp a moving block from vibrating in a direction perpendicular to an axis of a raceway rail. A damping plate with a surface facing a surface of a raceway is provided at a moving block body. The surface of the damping plate is set to... | 10/09/2012 |
| 8281490 | Spherical bearing and process for manufacturing the same Provided are a spherical bearing in which a ball portion (10) of an inside member (1) can be sealed inside an outside member (2) without employment of casting, and the outside member (2) and the inside member (1) are coupled to eac... | 10/09/2012 |
| 8272783 | Motion guide device Provided is a motion guide device capable of guiding a moving body smoothly without rattle and facilitating separation of the moving body from a main body. The motion guide device includes: a raceway rail having a rolling-element rolling part; a moving block having ... | 09/25/2012 |
| 8272289 | Roller screw A roller screw is provided having a structure suitable for circulating rollers. The roller screw has a screw shaft 5 with a spiral roller rolling groove 5a formed on an outer peripheral surface thereof; a nut 6 with a spiral roller rollin... | 09/25/2012 |
| 8272286 | Linear actuator with dustproof mechanism A linear actuator with a dustproof mechanism provides reliable dustproof capability over the entire stroke of the actuator. A linear actuator 100 with a dustproof mechanism includes a ball screw, a movable stage 4 including a ball screw nut that engage... | 09/25/2012 |
| 8261627 | Rolling body screw device There is provided a new rolling body screw device manufactured with cheap cost without degrading quality in comparison with a conventional device even for a device having any large dimension in an end-cap type rolling body screw device. The rolling body screw device... | 09/11/2012 |
| 8251588 | Motion guide device having direction changing passages that cross each other three-dimensionally and a method of assembling the same The present invention provides a motion guide device having inner and outer direction changing passages that mutually cross three-dimensionally, in which a retainer is able to smoothly circulate even when an outer peripheral side of the inner direction changing pass... | 08/28/2012 |
| 8251587 | Motion guide device, relative motion system and displacement absorbing mechanism Provided is a motion guide device having a low rigidity in the vertical direction and a low rigidity in the horizontal direction. The motion guide device has: a raceway rail 15 having a bottom surface 30a, side surfaces 30b ... | 08/28/2012 |
| 8231274 | Motion guide device, table apparatus, and damping method for motion guide device A motion guide device that has a novel damping structure different from the conventional damping structure is provided. The present invention comprises a raceway member (1) having a rolling-element rolling part (1a); a moving member (2) h... | 07/31/2012 |
| D664169 | Linear actuator | 07/24/2012 |
| 8220353 | Screw device manufacturing method and screw device A screw device manufacturing method ensures high productivity and adequate nut strength. The disclosed screw shaft manufacturing method includes: a groove forming step of forming a loaded ball rolling groove in a flat plate; and a nut forming step of bending the fla... | 07/17/2012 |
| 8217538 | Linear motor having a slidable element A linear motor is provided with a stator, a slider disposed to be movable relatively with respect to the stator with a gap, and a non-magnetic plate mounted to either one of the stator and the slider so as to define the gap between the stator and the slider. ... | 07/10/2012 |
| 8167493 | Ball spline a ball spline enabling easy machining of a spline shaft by drawing and manufacturable at low cost. The ball spline includes a spline shaft in which multiple lines of ball rolling faces are formed along the longitudinal direction; and a spline nut having a hollow hol... | 05/01/2012 |
| 8166838 | Actuator for driving movable object and motion guide apparatus for guiding motion of movable object An actuator has a hollow track rail 6 having a slit 8 extending in an axial direction thereof, a movable block 7 disposed inside the track rail 6 to be movable along the track rail, and a ball screw mechanism for moving the movable block ... | 05/01/2012 |
| 8146453 | Motion guide device A motion guide device is provided which comprises a chain of rollers in which retainers are interposed, in which the chain of rollers is given a degree of freedom of rotation. The motion guide device comprises a track member (5) on which a roller rolling part... | 04/03/2012 |
| 8143750 | Linear motor having coils surrounding an axially moving magnetic rod A compact linear motor is provided which is able to limit a rod, which linearly moves relatively to coils, from revolving. The linear motor comprises a rod (11) equipped with magnets (13), coils (4) surrounding the rod (11), and a ... | 03/27/2012 |
| 8141499 | Wireless actuator A wireless actuator includes a track rail, a slide member movable along the track rail, a driver which is mounted on the slide member and which allows the slide member to travel with respect to the track rail, a radio receiver portion which is mounted on the slide m... | 03/27/2012 |
| 8132479 | Screw device and method of manufacturing the same Provided is a screw device capable of preventing occurrence of any elevation change at a joint between a ball return path of a circulation member and a loaded ball rolling groove of a nut. The circulation member 12 has end parts 14 and 15... | 03/13/2012 |
| 8132477 | Ball screw device A ball screw device having a novel ball circulation structure suitable for a screw shaft with a large lead, optimum for downsizing and weight saving of a nut member, capable of being manufactured at low cost, and capable of exhibiting high reliability even under sev... | 03/13/2012 |
| 8129928 | Power branching system and power branching method Provided is a power branching system for driving a plurality of motors by use of a single servo driver, the power branching system capable of protecting each of the motors. The power branching system of the present invention has power lines 15 branched... | 03/06/2012 |
| 8123407 | Ball spline device Provided is a ball spline device, in which an outer diameter of a nut member can be downsized to the maximum while sufficiently performing an original function, and which can keep reliability while being capable of being simply manufactured at lower cost without inv... | 02/28/2012 |
| 8106545 | Linear actuator unit Provided is a linear actuator unit that includes: a guide shaft formed of a magnetic body that is formed into a tubular shape while having a hollow portion therein, and has one linear opening portion formed thereon along an axial direction thereof; a slide member ca... | 01/31/2012 |
| 8097986 | Micro actuator Disclosed is a micro actuator capable of being formed in compact as a whole, such as 10 mm in diameter by diminishing a difference between a stroke distance of a moving member and an overall length, and by reducing a sectional area taken in a direction orthogonal to... | 01/17/2012 |
| 8092402 | Power assist control method, power assist control apparatus, and reduction apparatus Power assist control capable of responding to feeling and sensibility when a man applies force to an object is performed. The power assist control outputs an assist force F or a speed F on the basis of an assist target force X detected by a force sensor 114 f... | 01/10/2012 |
