| Patent Number |
Title Of Patent |
Date Issued |
| 7362623 |
Semiconductor memory device |
April 22, 2008 |
| A semiconductor memory device includes: a memory cell array having a plurality of memory cells arranged therein; and a sense amplifier circuit configured to read data of the memory cell array, wherein a comparison operation is performed between read out data from the memory cell array |
| 7349249 |
Semiconductor memory device |
March 25, 2008 |
| A semiconductor memory device includes a memory cell array with memory cells arranged therein, each memory cell storing data defined by threshold voltage thereof, wherein the memory cell array includes first and second areas; the first area stores multi-value data written with plural |
| 6705430 |
Dust preventing structure of guide unit |
March 16, 2004 |
| This invention relates to a dust preventing structure of a guide unit comprising a track shaft and a sliding member engaging the track shaft via a plurality of rolling bodies such that it is capable of reciprocating in a length direction thereof. Elastic members in firm contact with the |
| 6571653 |
Ball screw |
June 3, 2003 |
| Lubricant retaining slits (5) are formed on a pair of seal members (2) from end surfaces (2b) thereof facing inside in the axial direction of a nut (1) of a ball screw to intermediate portions of the seal members (2), and foreign bodies removing slits (6) are formed on the seal members ( |
| 6401867 |
Lubricant supply system |
June 11, 2002 |
| A lubricant supplying unit preferable for a linear motion apparatus such as a linear guide unit and a ball screw unit, always capable of coating all rolling body rolling grooves formed on a track shaft with an equal amount of lubricant regardless of a difference in the mounting posture o |
| 6364058 |
Lubricant supply device |
April 2, 2002 |
| A lubricant supply device is to be fitted to a nut member engaging with a screw shaft through rolling members to supply lubricant to the screw shaft along with a relative rotational motion of the nut member to the screw shaft. The device comprises an application member, a lubricant stora |
| 6276225 |
Ball screw assembly |
August 21, 2001 |
| A ball screw assembly includes a screw shaft with a spiral groove, balls along the groove, a nut with the screw shaft relatively rotatable with the balls, and a seal device. A portion of each seal member is radially divided into blocks by plural slits so as to extend from one end surface |
| 6155717 |
Linear movement device and lubricant supplying device used therefor |
December 5, 2000 |
| The present invention relates to a linear movement device, for example, a linear guide device, a ball screw, a ball spline or the like in which a track shaft and a slide member is engaged movably relative to each other via a rolling element of a ball, a roller or the like, in details, to |
| 6152602 |
Ball spline unit and method of forming outer cylinder of ball spline unit |
November 28, 2000 |
| An object of the present invention is to provide a ball spline unit enabling the balls to smoothly circulate without increasing a size of the ball spline unit, and enabling to be integrally molded by accurately setting a position of a resin portion to be formed to an outer cylinder. |
| 6116783 |
Ball chain |
September 12, 2000 |
| The present invention relates to a ball chain used by being integrated to, for example, a ball endless track of a linear guide device for endless sliding in which a number of balls are arranged in one row and rollably held, particularly to a ball chain which is most pertinent to a linear |
| 6012848 |
Endless sliding guide apparatus |
January 11, 2000 |
| An endless sliding guide apparatus including a track rail, a sliding table having an endless track comprising a load rolling path, a no-load rolling path and a change direction path and rolling bodies wherein at least one of the no-load rolling path, the inner peripheral portion of the c |
| 5988883 |
Endless retainer of guide device and fabrication method thereof |
November 23, 1999 |
| An endless retainer of a guide device including a number of rolling bodies arranged at predetermined intervals for rolling at an inside of an infinite track formed in the guide device, a flexible resin connector having interposing portions interposed among the respective rolling bodies |
