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Assignee: NTN Corporation


Location: Osaka, JP
No. of patents: 894

1                      
NumberTitleIssue Date
8182352Constant velocity universal joint
A constant velocity universal joint smoothly rotates under a high operating angle and large torque and reduces an excessive load applied to the cage. The universal joint includes an outer joint member having an inner spherical surface with multiple track grooves and...
05/22/2012
8182155Lubricating grease and lubricating grease-enclosed roller bearing
A lubricating grease is provided which is excellent in durability at high temperatures, inhibits the reaction between fluorine and steel and has a long life and a rolling bearing in which the lubricating grease is enclosed. The lubricating grease contains perfluorop...
05/22/2012
8181615Lash adjuster for swing arm type valve gear
The object is to provide a lash adjuster that can be easily and repeatedly mounted on a swing arm type valve gear, having an adjusting screw that can be repeatedly held in a pushed-in state with a general-purpose turning tool such as a wrench. A serrated inte...
05/22/2012
8177928Method of restrained-quenching of annular member
A method of restrained-quenching of an annular member, that can readily ensure a sufficient effect of restraint, increase treatment efficiency of a quench hardening treatment, and suppress production cost of the annular member, includes a heating step, a first cooli...
05/15/2012
8177437Rolling bearing, retainer segment and main shaft support structure of wind-power generator
A rolling bearing (11) comprises a plurality of rollers, and retainer segments (15a) retaining the rollers and split along a split line extending in an axial direction. The retainer segment (15a) has a plurality of pillar parts (
05/15/2012
8177433Hydrodynamic bearing unit
A housing for a hydrodynamic bearing unit of this type is formed from a resin material having high oil resistance and low outgassing property to ensure the cleanliness of the bearing unit. An ester-based lubricating oil is used as a lubricating oil filled inside the...
05/15/2012
8174257Wheel bearing device with rotation detector
A wheel support bearing assembly for supporting a wheel, which assembly includes an outer member having rolling surfaces and serving as a stationary member; an inner member having rolling surfaces; a plurality of rows of rolling elements interposed between the respe...
05/08/2012
8173732Dielectric elastomer composition and antenna member
The present invention provides a dielectric elastomer composition which has been improved to have an excellent flame-retardant property in consideration of influence on environment and a satisfactory dielectric characteristic as a material for an antenna; and a memb...
05/08/2012
8172962Fixed constant velocity universal joint and method for manufacturing outer race thereof
A fixed constant velocity universal joint includes an outer race having a spherical inner circumferential surface, the outer race including axially extending ball grooves formed in the spherical inner circumferential surface at regular circumferential intervals, and...
05/08/2012
8172689Fixed-type constant velocity universal joint
A fixed-type constant velocity universal joint can sufficiently interpose a lubricant between a torque transmitting ball and a guide groove, and reduce frictional force. The fixed-type constant velocity universal joint of the present invention includes an outer join...
05/08/2012
8172464Tapered roller bearing
A tapered roller bearing achieves improvement in manufacturability and a longer life. The tapered roller bearing includes an outer ring, an inner ring, a plurality of tapered rollers disposed between raceways of the inner ring and the outer ring. A cage holds each t...
05/08/2012
8172463Rolling bearing with a ceramic coating and method for manufacturing the same
A rolling bearing is provided that includes an inner ring, an outer ring, and a plurality of rolling elements provided between a raceway surface of the inner ring and that of the outer ring and has a ceramic film formed on at least one surface selected from among an...
05/08/2012
8172055One-way clutch
A one-way clutch is proposed which includes an outer race having a radially inner surface in which a plurality of pockets are formed. Rollers are each received in one of the pockets. Wedge-shaped spaces are defined between respective cam surfaces of the pockets and ...
05/08/2012
8167503Taper roller bearing
A taper roller bearing includes an inner race, an outer race, taper rollers arranged so as to be rollable between the inner and outer races, and a retainer for retaining the taper rollers, in which a flange portion is provided only on the radially larger side of the...
05/01/2012
8167497Sensor-equipped bearing for wheel
A sensor-equipped bearing for a wheel rotatably supporting the wheel relative to a vehicle body includes an outer member (1) provided with a double-row raceway surface (3) on an inner periphery thereof, an inner member (2) provided with raceway ...
05/01/2012
8166657Needle roller bearing
A steel retainer (3), which retains needle rollers (2), is formed from a steel plate containing 0.15 to 1.10% by mass of carbon. After being formed, the steel plate is subjected to induction heat treatment which includes induction hardening and inducti...
05/01/2012
8162766Fixed type constant velocity universal joint
A fixed type constant velocity universal joint includes an outer joint member having an inner spherical surface in which a plurality of track grooves extending in an axial direction are formed; an inner joint member having an outer spherical surface in which a plura...
04/24/2012
8162765Constant velocity universal joint
In a fixed type constant velocity universal joint, a center of each of guide grooves of an outer joint member is offset to a position of being spaced apart from a joint central plane to a joint opening side by an axial distance, and is spaced apart from a joint cent...
04/24/2012
8162544Gas bearing spindle
A gas bearing spindle includes a rotation shaft, a sleeve, and a housing. The sleeve includes a bearing portion formed of a nonmetallic sintered body; and a retaining ring formed of a metal. Further, the retaining ring and the bearing portion are in contact with eac...
04/24/2012
8157453Bearing device for wheel
In an assembly of retainers and tapered rollers to be easily incorporated into an outer ring having a rib portion on an inner peripheral surface on an outboard side thereof, recesses are formed in a large end surface and a small end surface of an outboard side taper...
04/17/2012
8153568Water-resistant grease and water-resistant-grease-enclosed rolling bearing and hub
The present invention provides water-resistant grease which improves the resistance to peeling which occurs from the surface of a bearing composed of carbon steel for machine structural use or the like even in a strict lubricating condition in which water may penetr...
04/10/2012
8152383Tapered roller bearing
In a tapered roller bearing, the roller coefficient γ is greater than 0.94. At least one member of an inner ring, an outer ring, and the tapered rollers includes a nitrogen-rich layer, and the grain size number of austenite crystal grains in the nitrogen-rich layer...
04/10/2012
8151959One-way clutch unit
A one-way clutch unit includes a one-way clutch and an unlocking member. The one-way clutch includes inner and outer races. Two pockets having wedge spaces having a wedge angle are formed between the inner and outer races. Several rolling elements are received in ea...
04/10/2012
8147342Fixed-type constant-velocity universal joint
Internal dimensions for fixed-type constant velocity universal joints are defined to optimize the geometry of the components of the joints and to readily achieve a larger operating angle of the joints. In the joint, the track grooves of an outer ring and an i...
04/03/2012
8147146Wheel bearing device with rotation sensor
An output cable 16c of a magnetic sensor 16a, which extends outward in the tangential direction of an arcuate sensor holding portion 15a formed on an annular core member 15 from a sensor unit mounted in the sensor hol...
04/03/2012
8145097Constant-velocity joint and image-forming device
A constant-velocity joint includes an outer ring having an annular space therein and an opening at one axial end thereof. The annular space is defined by a radially outer wall and a radially inner wall of the outer ring. At least one of the radially outer wall and t...
03/27/2012
8142081Wheel support bearing assembly
A wheel support bearing assembly includes an outer member, an inner member and double row balls. The inner member includes a hub unit, which has a wheel mounting flange defined in an outer periphery thereof, and an inner ring mounted on the outer periphery of the in...
03/27/2012
8142080Sealed rolling bearing
A radially outer portion of the seal member is fitted in each of a pair of seal grooves formed in the radially outer surface of an outer ring at both ends thereof. A seal lip formed at the radially inner portion of each seal member is brought into elastic contact wi...
03/27/2012
8136493Lash adjuster
A lash adjuster is provided which includes a cylindrical housing having an open top and formed with an internal thread on an inner periphery thereof, a screw rod having an external thread formed on an outer periphery thereof and in threaded engagement with the inter...
03/20/2012
8132968Bearing unit for wheel
A cylindrical pilot portion (72) to be fitted to an inner periphery of a wheel (80) is formed at an inner diameter part of a brake rotor (70). A shape of a hub wheel, in particular, the shape on an outboard side is thus simplified, and the hub w...
03/13/2012
8132965Hydrodynamic type oil-impregnated sintered bearing
A hydrodynamic type oil-impregnated sintered bearing includes a porous bearing body of sintered metal having a bearing surface in which hydrodynamic pressure generating grooves slating against an axial direction are provided. Lubricating oil or the base oil of lubri...
03/13/2012
8132658Seat having a position adjustment device
Provided is a seat where pumping operation of a lever of the seat not only rotates an output member by inching but also, when a load in the operation direction of the lever is applied to the output side member, rotates it at one stroke in that direction. A seat adju...
03/13/2012
8132636In-wheel motor drive unit
An in-wheel motor drive unit (21) comprises a casing (22), a motor part (A), a deceleration part (B), a wheel hub (31), and a wheel hub bearing (33) rotatably supporting the wheel hub (31) with respect to the casing (22). Th...
03/13/2012
8132550Roller bearing, camshaft support structure, and internal combustion engine
A needle roller bearing (21) as a roller bearing comprises an outer ring (22) formed by connecting a plurality of arc-shaped outer ring members in a circumferential direction, and a plurality of needle rollers (23) arranged along the inner diame...
03/13/2012
8128761Carbonitriding method, machinery component fabrication method, and machinery component
A carbonitriding method that can improve the nitrogen permeating rate to render the carbonitriding process effective is directed to carbonitriding a workpiece formed of steel that contains at least 0.8 mass % of carbon by heating in an atmosphere including ammonia, ...
03/06/2012
8128504Constant velocity universal joint
An inner joint component and a shaft of a constant velocity universal joint are connected in a configuration it difficult for backlash to occur. An axis hole inner diameter of an inner member of the constant velocity universal joint is unhardened, and a spline servi...
03/06/2012
8128291Needle roller bearing and bearing structure
A needle roller bearing comprises an outer ring having a plurality of outer ring members split by a parting line extending in the axial direction of the bearing, a plurality of needle rollers rotatably arranged on the raceway surface of the outer ring, and a retaine...
03/06/2012
8128168Bearing bush for seat reclining device and seat reclining device
A bearing bush, disposed in a shaft hole of an external gear of a seat reclining device, which slidingly contacts wedge-shaped pieces. The seat reclining device has a differential transmission mechanism for adjusting an open angle of a hinge connecting a seating sur...
03/06/2012
8123414Tapered roller bearing
A tapered roller bearing 1 comprises an inner ring 2, an outer ring 3, a plurality of tapered rollers 4 rollably disposed between the inner and outer rings 2 and 3, and a cage 5 for holding the tapered rollers 4
02/28/2012
8123411Sensor-equipped bearing for wheel
To provide a sensor equipped wheel support bearing assembly, in which a load sensor can be installed compactly in an automotive vehicle, maintaining a high sensitivity while damage and/or malfunction caused by the external environments and/or the electromagnetic noi...
02/28/2012
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