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| Number | Title | Issue Date |
| 7802920 | Static-pressure gas bearing mechanism A first and a second static-pressure gas bearings supporting a rod at two locations in the axial direction in the non-contact manner are provided, in which the first static-pressure gas bearing is fixedly supported by a bearing housing, while the second static-press... | 09/28/2010 |
| 7744281 | Method and device for monitoring the operation of a plain bearing In a method of monitoring the operation of a plain bearing, a lubricant passage (15) of a bearing segment, this lubricating passage (15) being provided for jacking oil for example, is used during hydrodynamic operation of the plain bearing for extracti... | 06/29/2010 |
| 7547141 | Linear motion guide apparatus having detecting device A linear motion guide device includes a magnetic member disposed on a guide rail, a slider slidably attached onto the guide rail for moving along the guide rail, and a detecting device includes a housing detachably secured to the slider and has a chamber for receivi... | 06/16/2009 |
| 7410299 | Linear rolling bearing A linear rolling bearing, having an approximately U-shaped guide carriage (2) which is arranged on a guide rail (1) and has two limbs (3) and a spine (4) which connects the two limbs (3), the two limbs (3) of the guide carri... | 08/12/2008 |
| 7303335 | Linear-motion device and method of manufacturing the same A linear-motion device has: a slider provided onto a guide rail relatively movably; and a plurality of rolling elements for causing the slider to move relatively in a longitudinal direction of the guide rail; whereby the slider comprising a slider block having rolli... | 12/04/2007 |
| 7275870 | Air bearing structure and linear driving device using said air bearing structure The length of the bearing surface in the movable portion which moves linearly is larger than the length of the bearing surface in the fixed portion by the stroke of the movement. With this configuration, the bearing surface on the side of the fixed portion always op... | 10/02/2007 |
| 7178981 | Linear roller bearing A linear roller bearing is provided having a guide carriage (1) which can be mounted on a guide rail (2) in a rolling manner via roller bodies (4). The guide carriage is provided with at least one continuous roller body channel (3) for th... | 02/20/2007 |
| 7144160 | Hydrodynamic bearing apparatus and stage apparatus using the same A plurality of preload magnet units are arranged on each side of a hydrodynamic bearing symmetrically. Preload magnet units are arranged inside a labyrinth partition to surround the hydrodynamic bearing in a non-air atmosphere. ... | 12/05/2006 |
| 7036249 | Tooth adapter having an elastomeric clamp assembly and method for using same A tooth adapter having an elastomeric clamp assembly and a method for using the same are provided. The system includes a tooth adapter having a first end operable to receive a removable tooth point and a second end having an upper blade and a lower blade, the upper ... | 05/02/2006 |
| 7032334 | System and method for coupling excavation equipment components In accordance with a particular embodiment of the present invention, a system for coupling excavation equipment components includes a pin assembly configured to couple a first tool body to a second tool body. The pin assembly is configured to be received at least pa... | 04/25/2006 |
| 7029214 | Linear guide apparatus There is provided a linear guide apparatus which, owing to the use of a gap-free braking device in a rolling guide, has a sufficiently high damping capacity. The linear guide apparatus for guiding a linear motion of a movable body along a guide rail on a fixed struc... | 04/18/2006 |
| 7001072 | Linear guideway with damping means A linear guideway with damping is provided mainly comprising a guide rail and a slider module, said slider module comprising a slider body, a plurality of roller balls, caps for roller balls to circulate and a damping block. The slider module is provided with said d... | 02/21/2006 |
| 6915881 | Linear drive A linear drive comprising a housing and a rail, which is mounted on the housing such that they can move relatively. Drive elements on the housing and on the rail to produce relative movement between the housing and the rail. The housing has a braking device to inter... | 07/12/2005 |
| 6848326 | Linear guide apparatus The linear guide apparatus includes a guide rail 3 including a rolling body rolling groove 8 and a friction apply unit 6 assembled to the guide rail 3. The friction apply unit 6 includes a unit main body 15, a brake member | 02/01/2005 |
| 6682217 | Magnetically stabilized precision table and load-carrying bearings A precision moving table system for transverse translation and comprising: first and second relatively movable table members, the first member supporting the second member at respective opposing surfaces of the members, at least one of said members compris... | 01/27/2004 |
| 6561049 | Linear guide apparatus The linear guide apparatus includes a guide rail 3 including a rolling body rolling groove 8 and a friction apply unit 6 assembled to the guide rail 3. The friction apply unit 6 includes a unit main body 15, a brake member 16, an oil pressure cylinder 17 ... | 05/13/2003 |
| 6176616 | Magnetically stabilized couplings and bearings for use in mechanical drives A wobble-absorbing magnetic bearing for a drive system that applies force from a driving mover to move a driven object; said bearing comprising: a driving bearing element having a first surface; a driven bearing element having a second surface that faces the first ... | 01/23/2001 |
| 6174084 | Linear motion bearing assembly with load compensation A linear motion bearing assembly is provided including a carriage, a rail, and a bearing assembly. The linear motion bearing assembly includes deflectable structure formed in at least one of the carriage, rail and bearing assembly. The deflectable structu... | 01/16/2001 |
| 6093989 | Advanced magnetically-stabilized couplings and bearings, for use in mechanical drives A rotary-arm drive includes a wobble-absorbing magnetic bearing (WAMB). One end of the arm engages a load-carrying surface. The other end rotates with a power-carrying rotary shaft. The arm transmits power at least one way between surface and shaft. The W... | 07/25/2000 |
| 6033116 | Hydrostatic pre-load piston A machine tool comprising a base, with a guide surface, a workpiece holder on the base, a movable tool carriage, and a motor for advancing the carriage along the guide surface toward the workpiece. Hydrostatic bearings are situated in the carriage for dis... | 03/07/2000 |
| 5779367 | Spline bearing with detection device A ball spline bearing having a detection device which detects the relative positions and so forth of a spline shaft and outer cylinder by forming a plurality of narrow grooves 21c in spline shaft 21 and arranging extremely narrow and linear scales 31 and ... | 07/14/1998 |
| 5476324 | Spline bearing A spline bearing is described which contributes to reducing the size and cost of the apparatus, such as an industrial robot, in which it is incorporated, and moreover, has a high degree of reliability of relative positioning of a spline shaft and outer cy... | 12/19/1995 |
| 5447375 | Method of controlling a gap of a hydrostatic bearing apparatus A hydrostatic bearing apparatus comprises a base member having a static pressure guide surface to which a static pressure pocket is formed, a temperature detector for detecting a temperature of an operation oil in the static pressure pocket at an outlet p... | 09/05/1995 |
| 5380095 | Bearing arrangement having magnetic attraction between sliders and clearance mechanism A slide mechanism for accurate linear, nonlinear and rotational motion. A first slide located in slidable relation to a second slide wherein the slides are separated by a distance except for small bearing surface. A portion of each of the slides is made o... | 01/10/1995 |
| 5364190 | Hydrostatic bearing apparatus A hydrostatic bearing apparatus comprises a base member having a static pressure guide surface to which a static pressure pocket is formed, a temperature detector for detecting a temperature of an operation oil in the static pressure pocket at an outlet p... | 11/15/1994 |
| 5330270 | Statically pressure balanced slide unit A static pressure slide unit includes a guide rail, two-part slider slidably mounted on the guide rail and having a slider main body and a slider pressure member, and a mechanism interposed between the slider main body and the slider pressure member for c... | 07/19/1994 |
| 5314254 | Stiffness enhancer for movable stage assembly A stiffener assembly which provides for improved performance of a movable stage arrangement. Often, it is desired to provide a movable stage arrangement in which a stage moves linearly with respect to a stationary base. In many applications, it is necessa... | 05/24/1994 |
| 5281029 | Linear motion rolling contact guide unit having damper mechanism A linear motion rolling contact guide unit includes a rail having a horizontally extending wing section, a slider slidably mounted on the rail and a plurality of rollers interposed between the top surface of the rail and the slider so as to allow a shift ... | 01/25/1994 |
| 5281028 | Linear motion rolling contact guide unit having a damper-inserted transverse adjustable mechanism A linear motion rolling contact guide unit includes a rail, a slider assembly and a plurality of rolling members interposed between the rail and the slider assembly. The slider assembly includes a pair of lower and upper sub-assemblies. The lower sub-asse... | 01/25/1994 |
| 5273364 | Ball screw driven linear motion rolling contact guide unit A ball screw driven linear motion rolling contact guide unit includes a rail having a generally U-shaped cross section and a ball screw shaft and a slider received in the rail and operatively coupled to the ball screw shaft. A plurality of rolling members... | 12/28/1993 |
| 5267796 | Linear motion guide unit having an anti-vibration mechanism A linear motion guide unit includes a rail having a top surface, a bottom surface and a pair of side surfaces, a thin plate member fixedly attached to the top surface of the rail and a slider slidably mounted on the rail with a predetermined gap between t... | 12/07/1993 |
| 5181780 | Anti-vibration linear motion guide unit A sliding contact type linear motion guide unit having at least one of desired anti-vibration and braking functions is provided. The unit includes a rail extending over a desired length, a slider movably mounted on the rail and a sliding member interposed... | 01/26/1993 |
| 5168767 | Compact ball screw assembly A ball screw assembly includes a screw shaft hving a peripheral surface formed with a spiral groove, an outer sleeve fitted onto the screw shaft with a predetermined gap therebetween and a plurality of balls interposed between the screw shaft and the oute... | 12/08/1992 |
| 5161896 | Rolling bearing for linear movement In a rolling bearing for linear movements, two rolling member circuits arranged between one arm of a U-shaped guide carriage and a lateral face of a guide rail, are substantially perpendicular to one another with their force transmission planes and are su... | 11/10/1992 |
| 4953988 | Linear guide apparatus with clamp device A linear guide apparatus has a fall-off prevention and a clamp device built therein. The fall-off prevention and clamp device includes a piston and a top integrally secured to the end of a piston rod. The piston having a piston head is accommodated in an ... | 09/04/1990 |
| 4914387 | Magnetic speed sensor with an adaptive threshold circuit for use with a bearing assembly A magnetic sensor bearing utilizes an adaptive threshold circuit for signal processing in order to compensate for external factors such as temperature, stress, aging, and external magnetic fields which all affect a fixed reference signal used with a compa... | 04/03/1990 |
| 4704712 | Low-friction slide apparatus for optical disc translation stage A low-friction slide apparatus for use with the translation stage of an optical disc recording/playback system is disclosed. The apparatus includes a rail which is fixed in position. The rail includes porous strips affixed to two orthogonal sides along it... | 11/03/1987 |
| 4671679 | Magnetic fluid devices such as magnetic fluid bearings, seals, and the like and an automatic magnetic fluid supply control system therefor Provides new magnetic fluid bearings and magnetic fluid seals incorporating a pressure responsive system for automatically controlling the supply of magnetic fluid to the magnetic fluid feed area of such bearing or seal. The system for controlling the sup... | 06/09/1987 |
| 4643590 | Guide system An improved system for guiding one part relative another in an accurately defined path, both planar and linear, is disclosed. The improved system eliminates friction associated with heretofore moving parts, is characterized by simplicity and cost effectiv... | 02/17/1987 |
| 4630942 | Guiding apparatus A guiding apparatus having a slider supported in a floating manner above a base by means of hydrostatic bearings, a pressurized fluid supplying means for supplying the hydrostatic bearings with a pressurized fluid, and detecting means for detecting the di... | 12/23/1986 |
