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NSK, Ltd. Patents
Assignee:
NSK, Ltd.
Address:
Tokyo, JP
No. of patents:
1404
Patents:












Patent Number Title Of Patent Date Issued
RE42885 Linear guide device November 1, 2011
In a linear guide device including: a rail having on either side surface thereof a track recess with a track surface formed thereon; a rail cover covering a rail upper surface of the rail; a saddle-like slider moving linearly on the rail; and a rolling member circulating through a co
RE39748 Sealed actuator July 31, 2007
A sealed actuator includes a motor stator having rotation-drive magnetic poles; a motor rotor arranged so as to confront magnetic pole surfaces of the motor stator while interposing a small distance therebetween and rotatably supported through roller bearings; and displacement detecting
RE39647 Disk for toroidal type continuously variable transmission May 22, 2007
The disk has a traction surface having a concave-arc-shaped cross section which is interposed between a small diameter end portion and a large diameter end portion. In the central portion of the end face of the disk on the small diameter end portion side, there is formed a through hole
RE38015 Roller bearing with a cage March 4, 2003
A roller bearing with a cage comprises an inner race and an outer race concentric with each other, a plurality of rollers interposed between the inner race and the outer race, and a cage for retaining these rollers. The cage comprises a pair of annular side plates disposed at the both en
RE36796 Method and apparatus for drying bearing August 1, 2000
In order to provide a vacuum degreasing-drying method by which extremely small, precision metal products can be degreased and dried quickly and completely without using organic solvents, according to the present invention, an object 112 to be rinsed is put in a vacuum drier 110 after
RE36190 Seat belt tightening device April 20, 1999
An object of the present invention is to provide a seat belt tightening device including a driving unit having excellent properties which assures that an intensity of webbing tightening power and a quantity of webbing tightening activity can easily be increased, and moreover, acceptable
8578812 Position adjusting device for steering wheel November 12, 2013
A structure is realized that is capable of preventing interference of respective friction plates (39, 40a, 40b) with other members existing therearound or with the body of a driver, and furthermore that facilitates, when assembling, insertion of a tension rod (17a) through a circular
8562020 Steering column support apparatus October 22, 2013
Construction of a steering column support apparatus is achieved that is able to suppress an increase in the height dimension, maintain a function of the steering column 6a being able to displace smoothly in the forward direction during a secondary collision and prevent the steering colum
8297142 Actuator October 30, 2012
Since centers of a second gear, a fourth gear and a sixth gear coincide with each other and are disposed rotatably round a circumference of the same long shaft, a compact configuration can be realized while using a gear train of five gears to obtain a reduction gear ratio of a high gear
8292512 Ball bearing and supporting construction October 23, 2012
A ball bearing has an inner ring fitted on a rotational shaft and including an inner ring raceway on an outer circumferential surface thereof, an outer ring including an outer ring raceway on an inner circumferential surface thereof, a plurality of balls rotatably provided between th
8285451 Method and apparatus for controlling electric power steering system October 9, 2012
Disclosed herein is a method for controlling an electric power steering system, wherein a motor is controlled by vector control and driven by a current command value calculated on the basis of a parameter such as a steering torque to provide a steering assist power to a vehicle steering
8267586 Rolling element accommodating belt for linear guide apparatus, linear guide apparatus and metall September 18, 2012
The metallic mold 90 includes a product configuration portion 93 formed between an upper mold 91 and a lower mold 92. This product configuration portion 93 is composed so that a rolling element accommodating belt 50 formed by this product configuration portion 93 can include spacer p
8262484 Telescopic shaft for vehicle steering shaft and grease composition for lubricating telescopic sh September 11, 2012
A telescopic shaft for vehicle steering installed in a vehicle steering shaft. A male shaft and a female shaft are non-rotatably and slidably fitted to each other and an outer peripheral portion of the male shaft and an inner peripheral portion of the female shaft come in contact with
8246252 Bearing apparatus August 21, 2012
A bearing apparatus has a rolling bearing including an outer ring (11), an inner ring (12), and rolling elements (13) disposed between the two rings, and a temperature sensor (TS) for measuring an internal temperature of the rolling bearing. A wire from the temperature sensor extends
8235420 Steering apparatus, manufacturing method of steering apparatus and manufacturing method of shaft August 7, 2012
An intermediate shaft is provided which connects a steering shaft and a steering gear mechanism together via a universal joint, a shoulder bolt is provided which fastens one of yokes of the universal joint and a shaft portion of the intermediate shaft and on which a small diameter portio
8221002 Bearing apparatus July 17, 2012
A bearing apparatus includes an outer ring (11), an inner ring (12), rolling elements (13) disposed between the two rings, and a seal (15) attached to one of the outer ring and the inner ring and extending toward the other ring. A temperature sensor is fitted to the seal, and hence a
8221001 Bearing apparatus July 17, 2012
A bearing apparatus includes a rolling bearing (16) having an outer ring (16a), an inner ring (16b), and rolling elements (16c) disposed between the inner ring (16b) and the outer ring (16a), a temperature sensor (TS) for measuring an internal temperature of the rolling bearing and a
8206260 Toroidal continuously variable transmission unit June 26, 2012
In a toroidal continuously variable transmission unit, a pair of guide surface portions 120, 120 are provided on a trunnion 15 so as to face oppositely each other and to extend in a direction which intersects a rotational center axis of a power roller 11 at right angles and intersect
8196486 Ball screw mechanism and assembling method of the same June 12, 2012
Since it is configured that an female screw groove 2a of a nut 2 extends round an axis of the nut 2 through 360 degrees or less and a sectional shape thereof taken at right angles to the groove contains a circular arc portion 2c of 90 degrees or less and a rectilinear portion 2d which
8186887 Double row tapered roller bearing unit May 29, 2012
Both outer-side inner ring elements 14 apply preload to respective tapered rollers 16 by being pressed from both sides in an axial direction by an outwardly-directed, flange-like collar 30, formed on an outer circumferential surface of one end among both ends in the axial direction o
8177435 Manufacturing method of a drawn cup needle roller bearing having seal ring May 15, 2012
A drawn cup needle roller bearing 30 having a seal ring comprises: a shell 31 having a raceway surface 31a on an inner circumferential face and also having inward flange portions 31b, 31c in both end portions; a cage 32 having a plurality of pockets 32a in a circumferential direction
8176799 State measuring apparatus for rolling bearing unit and method of manufacturing the same May 15, 2012
The sensor holder has an annular portion that holds the sensors. A holding ring that is securely fitted in an inner peripheral surface of a cylinder portion constituting a cover made of metal in terms of a large tight fit is embedded in an intermediate portion of this annular portion
8167760 Toroidal continuously variable transmission unit and continuously variable transmission May 1, 2012
In this toroidal continuously variable transmission unit, a carrier 100 and a disc 2 is brought into direct friction contact with each other, and power transmission between the carrier 100 and the disc 2 is implemented by friction force. Because of this, the necessity of machining a gear
8164828 Observable centrifugal apparatus and observation apparatus April 24, 2012
Disclosed is an observable centrifugal apparatus capable of checking in real time a state of a sample during reaction of separation or synthesization in the form of a stable and high-quality image at a high frame rate. An observable centrifugal apparatus A has a rotary disc 4 rotatin
8156781 Steering rack and method of manufacturing the same April 17, 2012
When a punch is downwardly pressed, an inner circumferential surface of a first rack blank bites into a top surface of a second rack blank. A blank material upwardly flows due to a reaction force and is used to form rack teeth. Thus, a filling degree of the teeth with the material is enh
8123494 Rolling bearing unit for supporting a wheel with an air compressor February 28, 2012
A wheel-supporting roller-bearing unit with air compressor that is compact and capable of keeping resistance against the rotation of the hub 4c low while at the same time maintaining good balance, and when necessary, is capable of obtaining compressed air having sufficient pressure r
8109169 Ball screw device February 7, 2012
A ball screw device 10 capable of increasing a load capacity by increasing the size of ball diameter and the number of threads by preventing the cutout of a nut from being interfered with a thread groove adjacent to the cutout even in the thread groove of a small lead screw and a mul
8102138 Electric power steering apparatus and method of assembling the same January 24, 2012
A motor control apparatus includes a steering column having inserted therein a steering shaft to which steering torque is transmitted, a reduction gear box coupled to the steering shaft, and an electric motor that transmits a steering assisting force to the steering shaft via a reduc
8091679 Electric power steering device January 10, 2012
A highly safe electric power steering device including a control device for determining the failure of a motor current detector based on the difference between the motor current estimate value and the detected motor current value is provided. The abnormality determining unit computes
8091449 Steering apparatus January 10, 2012
End portions of lower-side telescopic friction plates 61, 61 which lie to face a front side of a vehicle body are connected integrally by a connecting portion 612, and a lower end 617 of the connecting portion 612 is fixed to an outer circumference of an upper-side lower column 10A by
8091240 Assembling method of bearing unit January 10, 2012
There is provided an assembling method of a bearing unit which has a bearing having an outer ring and a retainer plate having a retainer hole for holding the outer ring. The assembling method has pressing a plurality of portions in a circumferential direction of a circumferential edg
8091236 Manufacturing method for toothed power transmission member having oil reservoir and toothed powe January 10, 2012
A method of manufacturing a toothed power transmission member having an oil reservoir according to the present invention includes steps of forming primitive concave portion, which form a basis for the oil reservoir, on a surface of a toothed power transmission member work, and formin
8088230 Rolling apparatus January 3, 2012
A rolling apparatus including an external member having a raceway surface on an inner peripheral surface thereof, an internal member having a raceway surface on an outer peripheral surface thereof, and a plurality of rolling elements which are rotatably provided between the raceway s
8087974 Manufacturing method for worm wheel, and worm gear reducer January 3, 2012
A manufacturing method for a worm wheel, the worm wheel meshed with an operational worm at usage, has steps of preparing a worm wheel, in which at least a surface layer of a tooth portion is made of synthetic resin, preparing a machining worm, in which pitch of teeth of the machining wor
8087831 Rotary support for wheel with encoder January 3, 2012
It is prevented that magnetic foreign matter adheres the magnet encoder 3a to deteriorate the reliability of rotation speed detection with the sensor 4a. The encoder 3a is provided on the outside of the combined seal ring 19 with reference to the bearing interior space 24, and the sensor
8083868 Rolling bearing December 27, 2011
A rolling bearing comprises an outer ring, an inner ring and rolling elements rotatably disposed between the outer and inner rings. At least a member selected from the outer ring, inner ring and rolling elements has C content of 0.2 or more and 0.6 or less wt %, Cr content of 2.5 or more
8083637 Toroidal continuously variable transmission December 27, 2011
The support beam 34 having the cylindrical convex surface 33 is provided at the intermediate portion of the trunnion 9b. The recess 38 of the partial cylindrical surface formed on the outside of the outer ring 37 on the thrust ball bearing 36 supporting the power rollers 8b and the c
8080957 Motor control device and motor-driven power steering system using the same December 20, 2011
An object of the present invention is to provide a motor control device capable of suppressing voltage composite vector fluctuation to increase the output of a brushless motor, and a motor-driven power steering system using this device. The present control device calculates motor phase
8052362 Main shaft device and machine tool with the same November 8, 2011
A machine tool including a bed; a work table horizontally movable on the bed; a column extending from the bed; a spindle head movable on the column; an outer cylinder attached inside the spindle head; a stator of a built-in motor; and a spindle sub-cartridge. The spindle sub-cartridge
8052331 Bearing fixing device and bearing unit November 8, 2011
A rolling bearing fixing device includes at least one bearing having mutually rotatable inner and outer rings, a housing having at least one fitting hole into which the bearing is fitted and a bolt insertion hole, a pair of fixing plates having at least one large-diameter hole and a
8021485 Positioning apparatus September 20, 2011
In the present positioning apparatus, a positioning apparatus, comprising: a box body including a process chamber exposed to a decompression environment in the interior of the box body and an opening allowing said process chamber to communicate with an outside; a moving member for sh
8016490 Thin-wall bearing September 13, 2011
A thin-wall bearing, comprising a retainer (4) formed in a divided type having a plurality of resin plate-like members (5), (5), . . . curved along an inner ring (1) and an outer ring (2). The retainer (4) comprises pockets (6) opening to the axial end part thereof and rollingly holding
8011268 Steering column system September 6, 2011
To provide a steering column system which has superior operating feeling and operating properties which can suppress an operational failure, an engaging arm is displaced relative to a cam member by an annular member that is deformed elastically. Distal ends of gear teeth are made to shif
8007184 Self-aligning roller bearing with retainer and manufacturing method for self-aligning roller bea August 30, 2011
There is realized a self-aligning roller bearing with retainer that stabilizes the orientation of spherical rollers and prevents these spherical rollers from skewing, and which can be rotated at high speed, and furthermore which enables efficient lubricant feed into pockets 9. By rot
8007181 Rolling bearing August 30, 2011
A grease composition having an apparent viscosity at -30.degree. C. of 5 to 200 Pas is sealed in a rolling bearing which retains a plurality of rolling elements between an inner ring and an outer ring in such a way that the rolling elements can freely roll. Thereby, there is provided a
8005594 Control apparatus for electric power steering apparatus August 23, 2011
The present invention provides a control apparatus for an electric power steering apparatus comprises: a steering assist command value calculating section; a current control section that calculates a voltage command value; and a motor driving section that drives a motor based on the
7985024 Rolling element accommodating belt for linear guide apparatus, linear guide apparatus and metall July 26, 2011
The metallic mold 90 includes a product configuration portion 93 formed between an upper mold 91 and a lower mold 92. This product configuration portion 93 is composed so that a rolling element accommodating belt 50 formed by this product configuration portion 93 can include spacer p
7983816 Control apparatus for electric power steering apparatus July 19, 2011
The present invention provides a control apparatus for an electric power steering apparatus comprises: a steering assist command value calculating section; a current control section that calculates a voltage command value; and a motor driving section that drives a motor based on the
7967512 Rolling bearing unit for rotation support unit June 28, 2011
A retainer plate 7a is fitted on a smaller-diameter step portion 9a of an outer ring 5a, and a retaining ring 11 fitted on the smaller-diameter step portion 9a is engaged with retaining projections 15 formed on an inner circumferential surface of a fitting hole 12 formed through the
7959358 Hub unit for driving wheel June 14, 2011
A sensor for detecting a speed of rotation is an active sensor, a sensing portion 35 of the sensor directly faces the magnetic encoder 10 without interposition between it and the encoder 10, and a harness 34 (or connector) of the sensor 30 for detecting the speed of rotation is taken

 
 
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