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Ntn Corporation patents


Recent patent applications related to Ntn Corporation. Ntn Corporation is listed as an Agent/Assignee. Note: Ntn Corporation may have other listings under different names/spellings. We're not affiliated with Ntn Corporation, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "N" | Ntn Corporation-related inventors


 new patent  Magnetic core powder, dust core, and producing magnetic core powder

Provided is a powder (A) for a magnetic core for producing a powder magnetic core, the powder (A) for a magnetic core including: as a main component a granulated powder (1) obtained by granulating iron-based amorphous powder having been subjected to insulation treatment and having a particle size distribution falling... Ntn Corporation

 new patent  Bearing part and rolling bearing

Each of an outer race (10), an inner race (11) and a ball (12) as a bearing part is a bearing part made of JIS standard SUJ2 and having a carbonitrided layer formed in a surface thereof, wherein, after heat treatment at a heating temperature of 500° C. for a... Ntn Corporation

 new patent  Sealed bearing assembly

A sealed bearing assembly includes seal members each including a seal lip formed with multiple protrusions, and arranged such that oil passages are formed between the seal lip and a seal sliding surface which slides circumferentially relative to the protrusions such that the oil passages communicate with the bearing internal... Ntn Corporation

 new patent  Tripod type constant velocity universal joint

Provided is a tripod type constant velocity universal joint, including: an outer joint member having track grooves; a tripod member including trunnion journals; and spherical rollers each fitted in a rotatable manner about each of the trunnion journals through intermediation of a plurality of needle rollers, in which a corner... Ntn Corporation

 new patent  Boot attachment method and constant velocity universal joint

Provided is a boot mounting method for a constant velocity universal joint in which a boot end portion is mounted and fixed to a mating member made of metal. After the boot end portion is fitted over a receiving surface being a radially outer surface of the mating member, a... Ntn Corporation

 new patent  Inductance element resin case and inductance element

The present invention facilitates positioning of contact surfaces of a resin case, core gap management, and assembling processing. A resin case 1 can house at least one magnetic core selected from a U-shaped magnetic core, a UU-shaped magnetic core, a UR-shaped magnetic core, and an I-shaped magnetic core. The resin... Ntn Corporation

 new patent  Waveguide slot antenna and warning system using same

Provided is a waveguide tube slot antenna (A), including: a waveguide tube (10) having a transverse section having a rectangular shape in each part of a waveguide (2) in an extending direction thereof; and a plurality of radiating slots (3) arranged in the waveguide tube (10) at predetermined intervals, in... Ntn Corporation

Tapered roller bearing

The present invention provides a tapered roller bearing used in a planetary gear speed reducer, and including an outer race, and a retainer formed with a first annular portion, a second annular portion, and pillars. At least one retainer guiding surface (raceway) which guides the retainer in the radial direction... Ntn Corporation

Compression-bonded magnet with case and producing the same

There is provided a compression-bonded magnet with a case, which can realize high magnetic properties, high corrosion resistance and high durability strength even at low cost. The compression-bonded magnet with a case is a compression-bonded magnet with a case 1, comprising: a compression-bonded magnet 2 comprising a rare earth magnet... Ntn Corporation

Constant velocity universal joint

A constant velocity universal joint has a large-diameter mounting portion fastened and fixed by a first fastening clamp onto a boot receiving portion of an outer joint member, and a small-diameter mounting portion fastened and fixed by a second fastening clamp onto a boot receiving portion of a shaft. A... Ntn Corporation

Two-motor vehicle drive device

A two-motor vehicle-driving apparatus is provided where the size of speed reducers in a radial direction is small. A motor shaft of the electric motor has an axial-through hollow structure. The motor shaft is provided with an input gear integrally therewith at its end closer to the speed reducer, with... Ntn Corporation

Anti-lock brake control device

The anti-lock brake control device includes: a wheel motion estimator to estimate one or more of an angle, an angular velocity, and an angular acceleration of a wheel; a slip estimator to estimate a slip state of the wheel, using an estimation result of the wheel motion estimator; and an... Ntn Corporation

Electric linear motion actuator and electromechanical brake system

A locking mechanism capable of locking and unlocking the rotation of the rotor shaft of an electric motor is constituted by: a plurality of recesses formed in one side surface of one gear of a plurality of gears of a reduction gear mechanism; a locking pin movable toward and away... Ntn Corporation

Hydraulic auto-tensioner

A hydraulic auto-tensioner includes a rod inserted in a cylinder having a bottom and containing hydraulic oil, and a hydraulic damper in the cylinder for damping the push-in force that tends to push the cylinder and the rod in the direction in which the rod is pushed into the cylinder.... Ntn Corporation

Electric brake device

An electric brake device includes: a brake rotor; a friction member; friction member contactor; an electric motor; braking force estimation unit; and a control device. The control device has a control system in which a motor rotation angle of the electric motor is included in a state quantity in a... Ntn Corporation

Roller bearing, retainer segment of roller bearing for supporting main shaft of wind-power generator, and main shaft support structure of wind-power generator

A tapered roller bearing (31a) has a plurality of retainer segments (11a, 11d) each having a pocket to house a tapered roller (34a), and arranged so as to be continuously lined with each other in a circumferential direction between an outer ring (32a) and an inner ring (33a). The retainer... Ntn Corporation

Grinding coolant supplier, grinding system and grinding method

A grinding coolant supplier configured to supply a grinding coolant to a grinder configured to grind an element of a machine part having a rolling element, the grinding coolant supplier including: a grinding coolant generation apparatus configured to generate a grinding coolant which is a mixture of a water-soluble stock... Ntn Corporation

Wheel bearing apparatus incorporated with a wheel speed detecting apparatus

A wheel bearing apparatus, incorporating a wheel speed detecting apparatus, has a mounting portion (17) on a cover body (15). It includes an insertion portion (17a) formed with a bottom insertion bore (22), and a cylindrical securing portion (17b). A wheel speed sensor unit (18) is secured in the insertion... Ntn Corporation

Wheel bearing device

A wheel bearing device has a vehicle-body-mounting flange 5b with a plurality of ears 10 discontinuously formed in a circumferential direction on an outer circumferential surface of the outer member 5. An outer circumferential surface 11 on the outer side of the outer member is tapered and formed such that... Ntn Corporation

Cable holding structure

A cable holding structure includes: an elastic member (23) having through holes (23h) through which cables (18) are passed; and a fixing portion (21, 22) having openings (21h, 22h) through which the cables are inserted, and disposed on a vehicle body-side member (19) to fasten the elastic member. The cables... Ntn Corporation

Driving force transmission mechanism

A driving force transmission mechanism includes a worm gear unit as a brake disposed between a driving motor and an electrically driven input gear, and is configured such that when a driving force is applied from the driving motor to the electrically driven input gear through the worm gear unit,... Ntn Corporation

Manufacturing peeling member

To provide a manufacturing method for a peeling member in which a non-adhesive resin film formed by fluororesin resin or the like is adhered to a metal plate, the method capable of manufacturing the peeling member which can prevent adhesion of a paper right after fixing for a long period... Ntn Corporation

Cage for rolling bearing, and rolling bearing

Provided are that a cage for a rolling bearing in which seizure or break is not generated under a condition of a high temperature and a high speed in which a dm·n value is not less than 80×104, and a rolling bearing using the cage. The rolling bearing 1 is... Ntn Corporation

Linear motion guide device

A linear motion guide device has a high rigidity, a good linear motion guiding accuracy, and as little rattling as possible. The linear motion guide device prevents sand, water or other contaminants from entering its actuator main body, and features low maintenance requirement. A linear motion member of the linear... Ntn Corporation

Electric actuator

An electric actuator has a housing, an electric motor mounted on the housing, a speed reduction mechanism, and a ball screw mechanism that converts the rotational motion of the electric motor to axial linear motion of a drive shaft. An annular groove is formed on an open end of the... Ntn Corporation

Manufacturing fluid dynamic bearing devices

The present invention relates to a manufacturing method for a fluid dynamic bearing device, the method involving: forming an axial clearance 14 having a clearance width δ equal to a total amount of clearance widths of two thrust bearing clearances δ1, δ2 between a second bearing surface C of a... Ntn Corporation

Green compact and producing same

)... Ntn Corporation

Power transmission shaft

A corrugated portion is formed in one end edge portion of the metallic shaft main body (2), and a triangular corrugated portion (11) is formed in an end edge portion of the shaft auxiliary body (3) on the metallic shaft main body side. The metallic shaft main body (2) and... Ntn Corporation

Bridge-type ball screw and manufacturing method thereof

A method of manufacturing a bridge-type ball screw (1) with a bridge member (5) fit into a nut bridge window (6). The bridge member (5) has a linking groove (5a) with a rolling track that acts as a circulating path. After the bridge member (5) is fit into the nut... Ntn Corporation

Electric lock

An electric lock includes an input switching clutch for selectively transmitting the electric or manual driving force to the output line. The input switching clutch includes an outer ring that rotates together with an electrically driven input gear, and an inner ring which rotates together with an output gear. Wedge-shaped... Ntn Corporation

Sintered bearing

Provided is a sintered bearing, including Al, Cu, and Ni, the sintered bearing having Al—Cu—Ni alloy structures (3) sintered together. The Al—Cu—Ni alloy structures (3) each have an Al—Cu—Ni matrix phase (α-phase) and an Al—Ni compound phase (κ-phase), and are free of an Al—Cu compound phase (γ-phase).... Ntn Corporation

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a... Ntn Corporation

Stationary constant velocity universal joint

A protrusion shaft portion is provided on an end surface of a shaft on a joint fitting side, and a recess into which the protrusion shaft portion is fitted is formed in an inner surface of a bottom wall of the mouth section of the outer joint member. The recess... Ntn Corporation

Synthetic resin retainer and ball bearing

A synthetic resin retainer includes two annular members having opposed surfaces opposed to each other and each formed with a plurality of pockets which are circumferentially spaced apart from each other, and in which the balls are received. Each annular member includes axially concave, arc-shaped pocket wall portions defining the... Ntn Corporation

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a first cylindrical portion (36) extending in a direction of a rotation axis (12); a... Ntn Corporation

11/02/17 / #20170314653

Power transmission roller assembly

A power transmission roller assembly includes a power transmission roller configured to be brought into contact with the driving roller and the driven roller, a pivot shaft fixed to a vehicle body, a pivot arm arranged radially inside of the power transmission roller and pivotally mounted on the pivot shaft,... Ntn Corporation

10/26/17 / #20170306929

Roller bearing, retainer segment, spacer and main shaft support structure of wind-power generator

A roller bearing comprises an outer ring, an inner ring, a plurality of rollers arranged between said outer ring and said inner ring; and a plurality of retainer segments having a plurality of column parts extending in a direction along a shaft so as to form a pocket for holding... Ntn Corporation

10/26/17 / #20170307006

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a radially outer area bent portion (41) formed by bending an area located radially outside... Ntn Corporation

10/26/17 / #20170307007

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a radially outer area bent portion (41) formed by bending the cage (11) inward in... Ntn Corporation

10/26/17 / #20170307017

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a radially outer area bent portion (41) formed by bending an area located radially outside... Ntn Corporation

10/26/17 / #20170307018

Thrust roller bearing cage and manufacturing the same

A thrust roller bearing cage (11) of the present invention is included in a thrust roller bearing (20) and includes a plurality of pockets (21) accommodating rollers (13). The thrust roller bearing cage (11) includes: a radially outer area bent portion (41) formed by bending an area located radially outside... Ntn Corporation

10/19/17 / #20170297096

Magnetic core and manufacturing same

The present invention provides a magnetic core having insulating properties, and a method for manufacturing the magnetic core. Provided is a magnetic core manufactured by compression molding and subsequent thermal curing of an iron-based soft magnetic powder having a resin coating formed on particle surfaces thereof. The iron-based soft magnetic... Ntn Corporation

10/19/17 / #20170298986

Slide member and producing same

Raw material powder containing metal powder as a main component is molded to form a metal powder molded body (3′), and the metal powder molded body (3′) is sintered to form a metal substrate (3). Further, a lubricating member (4) is made of an aggregate of graphite particles (13), and... Ntn Corporation

10/05/17 / #20170284570

Joint unit, magnetic rotating arc joining method, and manufacturing joint unit

A joint unit includes a first metal pipe, a second metal pipe, and a joint portion (a region including a joint interface at which the end faces of the first and second metal pipes are joined to each other. At the joint portion, an outer circumferential bead portion protruding toward... Ntn Corporation

10/05/17 / #20170288490

Breather structure of automotive motor drive unit and in-wheel motor drive unit including the same

An automotive motor drive unit includes a breather passage (Q) provided in casings (21a, 21r, 22a, 22r) that form an outer shape of the automotive motor drive unit; an entrance port (48m) that is provided at an inlet side of the breather passage and that connects with an internal space... Ntn Corporation

09/28/17 / #20170276172

Wheel bearing apparatus and its mounting structure

A wheel bearing apparatus has an outer member with a body mounting flange and double row outer raceway surfaces, an inner member with double row inner raceway surfaces opposing the double row outer raceway surfaces, and double row rolling elements contained between the inner raceway surfaces and the outer raceway... Ntn Corporation

09/28/17 / #20170276175

Method for producing semispherical shoe for swash plate compressor and injection molding die

The present invention provides a method for producing a durable semispherical shoe which can be prevented from being subjected to seizure even in a dry lubrication state in which there is no lubricating oil at a start time of an operation of a swash plate compressor, can be restrained from... Ntn Corporation

09/21/17 / #20170266725

Dynamic pressure bearing and manufacturing same

Dynamic pressure bearing (10), including: a green compact (10′), as a base material, of raw material powder including metal powder capable of forming an oxide coating; and dynamic pressure generating portions (A1 and A2) formed through die molding on an inner peripheral surface (8a) forming a radial bearing gap with... Ntn Corporation

09/21/17 / #20170268640

Operation device for link actuating device

An operation device for a link actuating device (51) is provided with a target value input unit (57) having a height direction target value input portion (57z) that allows input of a movement amount in a height direction or a coordinate position in the height direction, which causes the distal... Ntn Corporation

09/14/17 / #20170260968

Abnormality diagnosing rolling bearing, wind turbine, and abnormality diagnosing rolling bearing

A displacement sensor detects a displacement of a main shaft, thereby detecting a relative displacement between an inner race and an outer race of a bearing. A data processor carries out an abnormality diagnosis for the bearing based on a detected value of the displacement sensor. The data processor carries... Ntn Corporation

09/14/17 / #20170261079

Power transmission roller assembly

A power transmission roller assembly is provided which includes a roller body to be brought into abutment with the driving roller and the driven roller; a pivot shaft fixed to a vehicle body; a pivot arm provided radially inside of the roller body, and pivotally mounted on the pivot shaft;... Ntn Corporation

09/07/17 / #20170252795

Gear and an electric actuator provided therewith

A gear that can be utilized in an electric actuator has teeth formed on its outer circumference and a central hole formed at its center. An intermediate region is positioned between a peripheral portion near the teeth and a boss near the central hole. The intermediate region has a thickness... Ntn Corporation

09/07/17 / #20170254357

Fluid dynamic bearing device, and bearing member and shaft member for use in same

A ratio W1/W2 of a circumferential width W1 of each of inclined hill portions G2 of a radial dynamic pressure generating portion G and a circumferential width W2 of each of inclined groove portions G3 is 1.2 or larger. And when an inner diameter of a bearing member is D,... Ntn Corporation

09/07/17 / #20170254359

Double row angular ball bearing for ct scanning device

A double-row angular contact ball bearing for a CT scanning device includes an inner member including a pair of raceway rings. The raceway rings have positioning holes into which a positioning member is inserted, to thereby suppress radial decentering of the raceway rings. Both the raceway rings are fastened by... Ntn Corporation

09/07/17 / #20170254374

Ribbon spring of a sprag type one-way clutch and sprag type one-way clutch

A ribbon spring of a sprag type one-way clutch is an elongated strip of sheet metal, and includes a plurality of pockets formed by punching so as to be spaced apart from each other in the longitudinal direction of the strip, to define bridges between respective adjacent pairs of the... Ntn Corporation

08/17/17 / #20170234304

Condition monitoring system and wind power generation system comprising the same

A condition monitoring system for a wind turbine comprises: a sensor which senses a condition of a yaw bearing; a monitor device which generates a diagnosis parameter based on a detection result of the sensor; a sensor which senses a rotating angular velocity of a nacelle and that of a... Ntn Corporation

08/17/17 / #20170234367

Rolling bearing

A rolling bearing (1) including: an inner ring (2) and an outer ring (3) which are bearing rings; a plurality of rolling elements (4) interposed in a rollable manner between raceway surfaces (2a, 3a) of the bearing rings; and a retainer configured to retain the plurality of rolling elements (4),... Ntn Corporation

08/17/17 / #20170234368

Cooling structure for bearing device

A bearing device includes a rolling bearing having an outer ring and an inner ring, an outer ring spacer disposed adjacent to the outer ring, and an inner spacer disposed adjacent the inner ring. The outer ring and the outer ring spacer are fitted to a housing, and the inner... Ntn Corporation

08/17/17 / #20170234836

Device for inspecting junction-type outer joint member of constant velocity universal joint

An inspection device inspects a joint-type outer joint member of a constant velocity universal joint that includes a cup section having a bottomed cylindrical shape and track grooves in an inner periphery thereof for torque transmitting elements, and a shaft section extending from a bottom of the cup section. The... Ntn Corporation

08/17/17 / #20170237185

Terminal mounting structure for vehicle motor drive device

A terminal mounting structure includes a plurality of receive-side terminals, each of which extends from a distal end of each of electrical leads, a mounting stand that includes an electrically-insulating base and a plurality of supply-side conductive bars that are disposed at intervals and extend so as to pass through... Ntn Corporation

08/03/17 / #20170217409

Electric brake device

Improved maneuverability, improved followability towards a target braking force and enhanced brake feeling when a low braking force is being effected may be achieved. A brake controller unit may include a clearance estimator which may be configured to use a rotational angle θ of a motor to estimate a clearance,... Ntn Corporation

08/03/17 / #20170219012

Rolling bearing

It is an object of the present invention to more reliably prevent foreign matter from floating in the bearing space of a rolling bearing, while maintaining lubrication performance in the rolling bearing. In order to achieve this object, a rolling bearing is provided which includes an outer race, an inner... Ntn Corporation

07/27/17 / #20170210165

Wheel bearing apparatus

A wheel bearing apparatus has an outer member with a body mounting flange to be mounted on a knuckle that forms part of a suspension apparatus. An inner member includes a wheel hub and at least one inner ring. The inner ring is press fit onto a cylindrical portion of... Ntn Corporation

07/27/17 / #20170211560

Semispherical shoe for swash plate compressor and swash plate compressor

It is an object of the present invention to provide a semispherical shoe which can be prevented from being subjected to seizure even in a dry lubrication state in which there is no lubricating oil at the start time of an operation of a swash plate compressor, is excellent in... Ntn Corporation

07/27/17 / #20170211623

Slide member and manufacturing same

A sliding member (1) is formed of a sintered compact. The sintered compact includes: a base layer (3), which mainly contains an Fe-based structure and further contains 1.0 wt % to 5.0 wt % of Cu, a metal having a melting point lower than a melting point of Cu, and... Ntn Corporation

Patent Packs
07/27/17 / #20170211663

Chain tensioner, chain tensioner group, and manufacturing a chain tensioner

A chain tensioner includes an oil supply passage for supplying hydraulic oil into a pressure chamber defined by a cylinder and a plunger, and a check valve provided at the end of the oil supply passage. A leak gap is defined between the sliding surfaces of the cylinder and the... Ntn Corporation

07/27/17 / #20170211699

Spool valve

A spool valve is provided which improves the responsiveness of the object to be hydraulically controlled, such as a V-belt type continuously variable transmission, and which improves the overall safety. The spool valve includes a spool inserted in a spool insertion hole formed in a valve body, The spool is... Ntn Corporation

07/20/17 / #20170203354

Method of manufacturing rolling bearing ring and rolling bearing ring

A method of manufacturing a rolling bearing ring includes preparing a coil material and a press machine for obtaining a rolling bearing ring from the coil material, setting the coil material on the press machine, and obtaining the rolling bearing ring by heating the coil material on the press machine... Ntn Corporation

07/20/17 / #20170204898

Support bearing for constant velocity joint, and outer ring for constant velocity joint

The present invention relates to a support bearing for a constant velocity joint in which: a ball rotation surface of a bearing is formed on a shaft section of an outer ring of an inboard-side constant velocity joint; a support bearing outer ring is disposed to face the ball rotation... Ntn Corporation

07/13/17 / #20170197503

In-wheel motor drive device

An in-wheel motor drive device includes a motor part, a speed reducer part, a wheel bearing part, a casing, and a lubrication mechanism that supplies lubricating oil to the motor and speed reducer parts. A rotation shaft of a motor in the motor part drives an input shaft of a... Ntn Corporation

07/13/17 / #20170198760

Electromagnetic connection device

An electromagnetic connection device includes an armature (4), a rotor (3), an electromagnetic coil (14), and a spring member (24) that biases the armature (4) in a direction in which the armature (4) is separated from the rotor (3). The electromagnetic connection device includes a damping member (25) mounted on... Ntn Corporation

07/06/17 / #20170191524

Ball bearing for spindle with built-in motor

An object is to provide a motor-incorporation-spindle ball bearing capable of allowing cooling air which enters inside the bearing of the motor-incorporation-spindle to be discharged smoothly out of the bearing without causing turbulent flow inside the bearing, does not cause a retainer easily to be vibrated, and provides a high... Ntn Corporation

07/06/17 / #20170191528

Ball bearing cage

A ball bearing retainer holds balls disposed between an inner ring and an outer ring, in pockets formed at a plurality of portions, in a circumferential direction, of an annular body. The annular body includes: annular parts disposed on both sides in an axial direction; and pillar parts that are... Ntn Corporation

06/29/17 / #20170182984

Electric brake system

Provided is an electric brake system capable of compensating for a braking force by the whole electric brake system when functional degradation occurs in a part of the system. This system includes: a diagnosis module (24) that detects functional degradation in each of electric brake devices (DB); a control calculation... Ntn Corporation

06/29/17 / #20170184150

Foil bearing

A foil bearing includes an outer member (11), and a plurality of foils (13) that are mounted to an inner circumferential surface (11a) of the outer member (11) and directly face the inner circumferential surface (11a) of the outer member (11) in a radial direction without interposition of another member... Ntn Corporation

06/29/17 / #20170184677

Battery checker

A battery checker is provided with: voltage application unit configured to apply an AC voltage to a battery to be measured; ripple voltage measurement unit configured to measure a ripple voltage contained in a terminal voltage of the battery; and electric power storage level detection unit configured to detect an... Ntn Corporation

06/29/17 / #20170187215

Charging device

A charging device includes a rectifier circuit that rectifies an alternating current of an AC power supply, and outputs the rectified alternating current as a pulsating current; power factor correction unit that enhances a power factor of the pulsating current outputted from the rectifier circuit; and an output circuit. The... Ntn Corporation

06/22/17 / #20170175813

Cylindrical roller bearing

A cylindrical roller bearing includes a flanged outer race having two inwardly extending flanges. One of the flanges is a flange ring separate from the outer race and fixed to the outer race. Cylindrical rollers are mounted between the outer race and a flangeless inner race, and retained by a... Ntn Corporation

06/22/17 / #20170175820

Constant velocity universal joint

A constant velocity universal joint includes an outer joint member having an opening portion at one end thereof, and an inner joint member configured to transmit torque while allowing angular displacement with respect to the outer joint member through balls. End portions of a boot closing the opening portion of... Ntn Corporation

06/22/17 / #20170175825

Reverse input blocking clutch

In a locking type reverse input blocking clutch, smooth finished surfaces having no directionality are formed, by barrel polishing, on surfaces brought into contact with rollers while rotation is being transmitted from the input side to the output side, i.e. an inner peripheral cylindrical surface of an outer ring and... Ntn Corporation

Patent Packs
06/22/17 / #20170176287

Bearing abnormality sensing system for railway vehicle

Provided is a railway vehicle bearing abnormality sensing system that can accurately perform abnormality determination for railway vehicle bearings. The system (100) senses an abnormality in a plurality of rolling bearings (17) housed in an axle box (3) provided to a bogie (2). The system (100) includes: vibration detection devices... Ntn Corporation

06/15/17 / #20170166178

Brake device system

This brake device system includes a plurality of brake devices mounted to a vehicle, each brake device including a brake rotor, a friction pad, friction pad driving assembly, and a control device. The control device is provided with: braking/stoppage determination section configured to cause the friction pad to come into... Ntn Corporation

06/15/17 / #20170166203

Electronic stability control system for vehicle

A vehicle electronic stability control system allows a vehicle to have improved movement performance and limit performance without causing a driver to feel uncomfortable, by actuating electronic stability control from a state where a lateral slip is relatively less likely to occur. The system prevents skidding of a vehicle including... Ntn Corporation

06/15/17 / #20170166829

Grease composition and rolling bearing

A grease composition containing base oil, a thickener, and an additive, wherein said additive contains at least one kind selected from among a phosphite ester shown by a chemical formula (1) or a phosphite ester shown by a chemical formula (2); a content of said phosphite ester is 0.5 to... Ntn Corporation

06/15/17 / #20170169924

Composite magnetic core and magnetic element

The present invention provides a composite magnetic core, containing magnetic powders poor in its moldability, which can be configured arbitrarily and has a magnetic characteristic excellent in direct current superimposition characteristics and a magnetic element composed of the composite magnetic core and a coil wound around the circumference thereof. A... Ntn Corporation

06/08/17 / #20170159713

Lubricating oil supply unit and bearing apparatus

The present invention relates to a lubricating oil supply unit including a holding portion (a lubricating oil tank) holding a lubricating oil supplied to the inside of a bearing, a supply portion (a drive circuit and a pump) supplying the lubricating oil to the inside of the bearing from the... Ntn Corporation

06/08/17 / #20170159718

Method of manufacturing outer joint member of constant velocity universal joint, outer joint member, shaft member and cup member

Provided is a method of manufacturing an outer joint member of a constant velocity universal joint, which is constructed by forming a cup section having track grooves, and a shaft section, and by welding a cup member and a shaft member, the method including: forming the cup member and the... Ntn Corporation

06/08/17 / #20170159719

Constant velocity universal joint outer joint member and manufacturing same

In an outer joint member of a constant velocity universal joint, a cup member and a shaft member are made of medium to high carbon steel and welded together. The cup member has a bottomed cylindrical shape that is opened at one end, and includes a cylindrical portion, a bottom... Ntn Corporation

06/08/17 / #20170159776

Chain tensioner

A chain tensioner is provided which is configured such that the air remaining in a pressure chamber can be discharged to the outside through a helical gap defined between a screw and a threaded hole, and through between circumferentially separate radial ends of a spring washer mounted between the screw... Ntn Corporation

06/08/17 / #20170163167

Power transmission device

This power transmission device is connected between an AC wiring system connected to an AC power supply, and a DC power supply, and transmits power from the DC power supply to the AC wiring system. The power transmission device includes an AC power supply voltage signal generator, a power converter,... Ntn Corporation

06/01/17 / #20170151981

Vehicle

A vehicle includes steering devices configured to change a travel state of the vehicle between a normal travel mode and a special travel mode by steering right and left wheels in right and left opposite directions; a display device; and a processor configured to calculate an angle difference between the... Ntn Corporation

06/01/17 / #20170152457

Lubricant composition and lubricant composition-sealed bearing

The present invention provides a lubricant composition which can be used as a lubricant for a rolling component, the composition capable of maintaining enhanced lubrication performance over a long period of time even under high temperature conditions such as temperatures of 180° C. or higher, and a rolling bearing including... Ntn Corporation

06/01/17 / #20170152891

Rolling bearing

A rolling bearing that can easily achieve the higher lubricating characteristic including the smaller rotational torque while employing the existing bearing shape and lubricant is provided. A rolling bearing 1 includes: an inner ring 2 and an outer ring 3 as a race ring; a plurality of rolling elements 4... Ntn Corporation

06/01/17 / #20170152895

Tripod type constant velocity universal joint

In a tripod type constant velocity universal joint 1, when D1 represents a large inner diameter being a diameter of a circle connecting radially outer end portions of roller guide surfaces 7 and D2 represents a small inner diameter being a diameter of a circle connecting radially inner end portions... Ntn Corporation

06/01/17 / #20170152922

Chain guide and chain transmission device

A chain guide includes a curved guide base extending along the direction in which a torque transmitting chain moves. The guide base includes, on its surface opposed to the chain, a rolling guide portion including a plurality of roller element bearings which are rotatable and configured to guide the chain... Ntn Corporation

06/01/17 / #20170152926

Gear and an electric actuator provided therewith

A sintered gear and an electrical actuator with the sintered gear where the sintered gear has spur teeth formed on a circumference of the gear. A central hole is on the center of the gear. A boss is formed around the central hole. A peripheral portion is formed radially inward... Ntn Corporation

05/25/17 / #20170144263

Cylindrical workpiece and a method and an machining the cylindrical workpiece

An apparatus for machining a cylindrical workpiece has a hollow spindle with a driving center on its tip end. The hollow spindle is rotationally journaled within a spindle unit. A tail stock spindle, with a centering center on its tip end, is rotationally supported and axially movable within a centering... Ntn Corporation

05/25/17 / #20170144482

Wheel bearing apparatus

A wheel bearing apparatus has an outer member, an inner member and double row rolling elements contained between outer raceway surfaces and inner raceway surfaces, respectively, of the outer member and the inner member. A vibration damping mechanism is mounted on a portion of the outer member or the inner... Ntn Corporation

05/25/17 / #20170144483

Wheel bearing apparatus

A wheel bearing apparatus has an outer member, an inner member and double row rolling elements contained between outer raceway surfaces and inner raceway surfaces, respectively, of the outer member and the inner member. A vibration damping mechanism is mounted on a portion of the outer member or the inner... Ntn Corporation

05/25/17 / #20170146061

Rolling component, material for same, and manufacturing rolling component

d=64729(Pmax/4)−1.441  (1).... Ntn Corporation

05/25/17 / #20170146410

Magnetic load sensor and electric brake system

A magnetic load sensor is provided which is high in axial rigidity. The load sensor includes a pair of parallel plate coupled together by coupling pieces. The coupling pieces are inclined relative to the axial direction such that when an axial load is applied to the parallel plates, the parallel... Ntn Corporation

05/25/17 / #20170146429

Portable diagnosis data measurement transmission device

Provided is a portable diagnosis data measurement transmission device that assuredly allows a server to perform malfunction diagnosis based on measurement data without influence of a communication status. The portable diagnosis data measurement transmission device (1) includes: a portable information terminal (2) connected to a server (6) via a communication... Ntn Corporation








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