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| Number | Title | Issue Date |
| 8182387 | Planetary carrier, planetary gear mechanism, and vehicle differential provided with the same A planetary carrier, formed of a cylindrical body, that receives a drive torque from a drive power source and differentially distributes the drive torque to a pair of output shafts, the planetary carrier including a gear holding portion that rotatably holds a planet... | 05/22/2012 |
| 8182318 | Obliquely grooved grinding wheel and method for manufacturing the same In a manufacturing method for a grinding wheel in which a plurality of wheel chips each composed of an abrasive grain layer containing superabrasive grains and a foundation layer are adhered to a core attached to a wheel spindle carried by a wheel head of a grinding... | 05/22/2012 |
| 8180529 | Electric power steering apparatus A microcomputer 17 (signal generating section 24) includes an attenuating section 31, which attenuates a specific frequency component included in an input signal. The attenuating section 31 receives a d-axis current value Id and a q-axis ... | 05/15/2012 |
| 8177871 | Vitrified bonded grindstone In a vitrified bonded grinding wheel that is formed so that superabrasives formed of cubic boron nitride (CBN) grains or diamond grains are bonded and held with a vitrified binder, the vitrified binder is formed of oxide particles and amorphous glass, and the vitrif... | 05/15/2012 |
| 8177019 | Steering device for vehicle It is one object of the present invention to provide a steering device for a vehicle improving a resolution of detecting a steering reaction force thereby to control precisely a reaction actuator and to improve a steering feeling. The steering device for the ... | 05/15/2012 |
| 8172644 | Grinding machine and grinding method A grinding machine is provided with first and second grinding wheels selectively used in dependence on the steps of machining operations. The second grinding wheel is grooved so that at least one oblique groove vertically crosses a contact surface on which a grindin... | 05/08/2012 |
| 8172561 | Metal part and method of manufacturing metal part A metal part in which a base material of silicon-aluminum alloy having 1 to 25% by mass of silicon as an anode is immersed in an electrolyte together with a cathode, and at least a portion of a surface of the base material is anodized and coated with an anodic oxide... | 05/08/2012 |
| 8169168 | Electric power steering apparatus An electric power steering apparatus includes a charge-discharge circuit including a circuit charging an auxiliary power supply by turning on and off an MOS-FET for voltage boosting and that selectively configures a first output mode in which an electric power is su... | 05/01/2012 |
| 8167757 | Limited slip differential and manufacturing method for limited slip differential A plurality of microscopic grooves are created on the surface of the teeth of planetary gears, and thus, irregular unevenness is created. This irregular unevenness includes a plurality of first microscopic grooves which function as lubricant grooves and a plurality ... | 05/01/2012 |
| 8164284 | Electric power steering system In an electric power steering system, an ECU 11 that controls the operation of the system includes three independent microcomputers 18u, 18v, 18w that perform phase current feedback control with respect to the corresp... | 04/24/2012 |
| 8162763 | Sliding-type tripod constant velocity joint An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corres... | 04/24/2012 |
| 8160777 | Electric power steering device When an electrification failure occurs in any of the phase of a motor, a control device of an electric power steering device executes current control for generating, in each of two electrification phases other than a phase with the electrification failure, a phase c... | 04/17/2012 |
| 8159166 | Motor drive circuit and electric power steering apparatus A motor drive circuit includes a transistor that is connected in parallel to a first voltage divider resistance that forms a voltage divider circuit between the source and the gate of a second interrupting MOSFET. If a reverse connection of the battery occurs, a com... | 04/17/2012 |
| 8157271 | Floating chuck mechanism A floating chuck mechanism provided at a workhead that is arranged at a processing apparatus for sandwiching a cylindrical-shaped workpiece by means of two center members along a rotational axis, the floating chuck mechanism causing the workpiece to rotate about the... | 04/17/2012 |
| 8154231 | Motor controller and vehicular steering system using said motor controller A low speed region position estimating portion is designed to be suitable for when the motor is operating in a low speed region, and estimates a low speed estimated rotational position θ^L. A high speed region position estimating portion is designed to b... | 04/10/2012 |
| 8152678 | Hybrid differential gear device, differential case therefor and assembling method of differential case It is an object of the present invention to provide a hybrid differential gear device achieving the small and light devices as a whole and easy assembling of a differential case. A hybrid differential gear device has a first differential gear mechanism 2 | 04/10/2012 |
| 8152676 | Speed change gear A speed change gear includes: a housing that has internal gears having different inside diameters; and a plurality of change gear units that are respectively in mesh with the plurality of internal gears and that change the speed of rotation from an input shaft to an... | 04/10/2012 |
| 8151958 | Power transmitting device A cam mechanism is provided with a forward rotation plate and a reverse rotation plate. The respective plates are urged by the respective coil springs in the directions opposite to each other. When the number of rotations of the front wheels becomes great relative t... | 04/10/2012 |
| 8151819 | Fluid supply valve attachment device A fluid supply valve attachment device that has a tank, a fixing member in which a recessed fitting section is formed, a fluid supply valve that is inserted in and fixed to the recessed fitting section, a first seal member which seals a space between the tank and th... | 04/10/2012 |
| 8150580 | Motor controller and electric power steering system In a case where a computing period of a torque ripple compensation section which computes current compensation values Δid and Δiq to be caused to flow into a motor in order to prevent occurrence of a torque ripple in the motor differs from a control period of a cu... | 04/03/2012 |
| 8146705 | Oscillating gear device, transmission ratio variable mechanism, and motor vehicle steering system An oscillating gear device includes an axially fixed gear piece rotatable around a first axis and an axially oscillating gear piece that oscillates while being inclined with respect to the first axis. A plurality of pins held by one of the gear pieces engage with a ... | 04/03/2012 |
| 8142257 | Detecting device for abnormal workpiece rotation in non-circular workpiece grinding machine In a non-circular workpiece grinding machine, a proximity sensor is arranged to face a non-circular portion of a workpiece for sensing a maximum diameter portion of the non-circular portion to detect that the maximum diameter portion is rotating in a detection phase... | 03/27/2012 |
| 8133098 | Tool spindle device In a tool spindle device, a tool head is slidably guided along guide members on a support table and is movable by a tool head feed mechanism. A tool spindle with a machining tool such as grinding wheel attached thereto is rotatably supported through antifriction bea... | 03/13/2012 |
| 8123018 | Power transmitting device A power transmitting device includes a front housing member, an inner shaft, and a main clutch that selectively permits and shuts off transmission of torque between the front housing member and the inner shaft. The power transmitting device is rotatably supported by... | 02/28/2012 |
| 8116946 | Electric power steering device An electric power steering (EPS) device including a rack actuator that applies assist force to a rack shaft, a column actuator that applies assist force to a column shaft, and an ECU that controls operation of the actuators by supplying drive power to motors, each o... | 02/14/2012 |
| 8116945 | Electric power steering device A rotational angle correction controller controls generation of an inverse assist torque using the “phase deviation” due to the correction of the rotational angle θ, thereby performing the rotational angle correction control to smooth rotation of the motor duri... | 02/14/2012 |
| 8115429 | Motor control apparatus and electric power steering system If the magnitude of a command voltage vector is greater than a predetermined voltage value indicated by a voltage limit circle, the magnitude of a voltage vector, which corresponds to a q-axis current and which forms the command voltage vector, is adjusted so that t... | 02/14/2012 |
| 8108105 | Electric power steering apparatus and method for controlling same In a control method for an electric power steering apparatus having a steering member, a steering mechanism, and a motor for assisting steering, a steering torque applied to a steering wheel is detected, frequency analysis is performed on the detected torque, and a ... | 01/31/2012 |
| 8106550 | Polyphase alternating-current motor and electric power steering apparatus In a motor that includes bus bars each of which has an intermediate electrical path portion, end electrical path portions, and a main electrical path portion, the width of a portion of the intermediate electrical path portion at which the multiple end electrical pat... | 01/31/2012 |
| 8104567 | Vehicle steering apparatus In a vehicle steering apparatus in which a housing for supporting coaxially to a rack shaft a ball nut that is provided with a ball screw mechanism constructed between itself and the rack shaft for moving in an axial direction for the purpose of steering and that is... | 01/31/2012 |
| 8104508 | Valve device assembling structure, plug body, and manual valve A plug body housing 16 has a receiving recess 17, and the receiving recess 17 includes a first recess 21 opening toward the outside and a second recess 22 connected to the first recess 21. Check valves 8 and 9 ... | 01/31/2012 |
| 8103419 | Driving force transmission device A driving force transmission device includes a transfer torque command value calculation section which calculates a transfer torque command value indicating a command value of the transfer torque between two members based on a running state of the vehicle, an energy... | 01/24/2012 |
| 8099211 | Electric power steering apparatus A microcomputer is provided with an extracting section capable of extracting a specific frequency component from an input signal. The extracting section extracts, from a pinion angle corresponding to a signal indicating a state of the steering system, a frequency co... | 01/17/2012 |
| 8096710 | Rotor for use in rotary encoder and wheel rolling bearing assembly including the same The invention seeks to provide a rotor for use in rotary encoder, which is increased in magnetic intensity and mechanical strength thereby achieving exact detection of rotation speed. A corner portion formed between a cylindrical portion 21 and a mount... | 01/17/2012 |
| 8096204 | Gear and electric power steering device A gear includes a metal core and a synthetic resin tooth body. The metal core includes a cylindrical portion, and a disc portion that extends inwardly in a radial direction from one end of the cylindrical portion. The synthetic resin tooth body is coupled to the cyl... | 01/17/2012 |
| 8092335 | Differential for vehicle A differential (1) for a vehicle includes a differential case (2), side gears (5L, 5R) rotatably accommodated in the differential case (2), pinion gears (3, 4) engaged with the side gears (5L, 5R), and pinion g... | 01/10/2012 |
| 8092313 | Universal joint yoke, universal joint, and vehicle steering apparatus A universal joint yoke includes: a cylindrical portion for fixing a shaft; a slit that is formed in the cylindrical portion and that extends from one end of the cylindrical portion in an axial direction of the cylindrical portion, which is a first direction; a reinf... | 01/10/2012 |
| 8086373 | Electric power steering apparatus An electric power steering apparatus includes a steering assist section that applies assist force to a steering system of a vehicle to assist operation of a steering wheel performed by a driver. The steering assist section is actuated by a motor. When there is an ab... | 12/27/2011 |
| 8082080 | Electric power steering apparatus An electric power steering (EPS) apparatus 1 includes a motor 12, an EPS actuator 10, a torque sensor 14, and an ECU 11. The EPS actuator 10 uses the motor 12 as a drive source to apply assist force to a steering syst... | 12/20/2011 |
| 8082079 | Vehicle control apparatus In a case where an engine ECU determines that the engine is started (restarted), the engine ECU notifies an EPSECU that cranking is to be performed to start the engine before performing the cranking. When such a notification is received, the EPSECU gradually reduces... | 12/20/2011 |
