| Patent Number |
Title Of Patent |
Date Issued |
| D266851 |
Machining center |
November 9, 1982 |
|
| 7438771 |
Steel material for high strength constant velocity joint intermediate shaft and high strength co |
October 21, 2008 |
| A steel material for a high strength constant velocity joint intermediate shaft is provided. The steal material may preferably contain C: 0.46 to 0.52%, Si: 0.6 to 0.8%, Mn: 0.7 to 0.9%, S: 0.01 to 0.05%, Mo: 0.3 to 0.5%, B: 0.0005 to 0.005%, Al: 0.002 to 0.05%, and Ti: 0.02 to 0.09%, |
| 7426428 |
Steering apparatus for vehicle and method for controlling the same |
September 16, 2008 |
| A vehicle steering apparatus includes a drive unit for changing a steering angle of a steered wheel. A calculation unit calculates a control target amount of the steering angle based on a vehicle model. A control unit controls the drive unit to change the steering angle based on the cont |
| 7398795 |
Excess flow valve |
July 15, 2008 |
| An excess flow valve includes: a valve that opens and closes a flow path; a solenoid that keeps the valve in an opened state; a pressure detector detecting the primary-side pressure of the valve; and a controller controlling current flow to the solenoid based on pressure detected by |
| 7374013 |
Electric power steering apparatus |
May 20, 2008 |
| An electric power steering apparatus comprises a steering assisting electric motor having an output shaft and a speed reduction mechanism. The speed reduction mechanism includes conical first and second gears to be engaged with each other. The first and second gears include a plurali |
| 7363134 |
Power steering apparatus |
April 22, 2008 |
| A power steering apparatus according to the present invention is constructed to calculate a rate of change of steering speed detected by steering speed detecting means and judge whether the calculated rate of change is smaller than or equal to 0 or not, and reduce a gain of feedback |
| 7354253 |
Oil pump |
April 8, 2008 |
| An oil pump includes: a rotor 3 for actuating a pump action to suck oil in a suction passage 24 from a suction port 27 to supply oil to a delivery passage by way of a delivery port 19; and a flow control valve for returning an excessive oil from the delivery passage to the suction pa |
| 7337873 |
Steering control apparatus for a vehicle |
March 4, 2008 |
| A steering control apparatus is provided for controlling a steered wheel angle of a wheel to be steered. On the basis of a road coefficient of friction estimated between right and left wheels, a braking force difference between the right and left wheels is calculated. A slip angle--t |
| 7313969 |
Pressure sensor |
January 1, 2008 |
| In a pressure sensor which has a metal housing 12 containing a sensor chip 11 and a joint housing 14 and in which an insulating member 15 is arranged to electrically insulate both of the metal housing 12 and the joint housing 14 from each other, the metal housing 12 is connected to a |
| 7308833 |
Torque sensor, wire harness, electric power steering assembly and terminal holder |
December 18, 2007 |
| In a torque sensor having lead pins connected to a wire harness, the wire harness includes: a plurality of lead wires; a plurality of connection terminals each having a sleeve mounted around each of the lead pins and a connection portion extended from an outer periphery of the sleeve to |
| 7302798 |
Hydraulic system, reservoir and pump suction enhancer for motor vehicle |
December 4, 2007 |
| A hydraulic system for a motor vehicle is provided with a pump suction enhancer includes a body section defining a small chamber, a venturi tube passage exposed to the small chamber at an inner end thereof and connected to the suction port of the oil pump, and a nozzle protruding int |
| 7220090 |
Linear motor operated machine tool |
May 22, 2007 |
| A linear motor actuated machine tool includes a bed, a column, upper and lower X-axis guides, a saddle, upper and lower X-axis linear motor magnets, and upper and lower X-axis linear motor coils. Upper and lower X-axis guides are attached to the upper and lower portion of front surfa |
| 7212903 |
Vehicle motion control apparatus |
May 1, 2007 |
| A vehicle motion control apparatus is provided with an anti-skid control device and a steering angle adjusting device, which adjusts the steering angle of at least one of the front and rear wheels to cancel a yaw deviation between a desired yaw factor and an actual yaw factor, to be |
| 7207891 |
Boot structure fitting for mechanical joint |
April 24, 2007 |
| A boot fitting structure is fitted onto an axial component to protect it from a dirty environment including outside dust. The boot has a pair of annular grooves and an annular lip between the pair of annular grooves on an inner surface of the boot. The annular lip does not project from a |
| 7207235 |
Ball screw mechanism and electric power steering apparatus using such mechanism |
April 24, 2007 |
| An electric power steering apparatus comprises a rack-and-pinion mechanism and a ball screw mechanism. The ball screw mechanism comprises a shaft formed a screw groove and a nut formed a screw groove. A ball-roll path is created spirally by the screw grooves of the shaft and the nut bein |
| 7194375 |
Pressure sensor |
March 20, 2007 |
| A pressure sensor 11 is provided with a connecter housing 30 having a pressure sensing element 20 arranged on an end surface thereof, a sensor housing 40 constructed to have the connecter housing 30 inserted thereinto, a pressure chamber 452 defined between the end surface of the con |
| 7191048 |
Vehicle motion control apparatus |
March 13, 2007 |
| A vehicle motion control apparatus is provided for performing a vehicle stability control on the basis of a parameter indicative of lateral margin for a tire on a road. The apparatus includes a steering control device for controlling a relationship between a steering angle and a tire |
| 7182712 |
Method for regulating offset of current detection signal in driving power transmission controlle |
February 27, 2007 |
| An offset value setting processing, in which whether or not all wheel velocities of front wheels and rear wheels are 0 km/h is determined and whether or not a pressing amount of an accelerator pedal is 0% is determined. If it is determined that the vehicle velocity is 0 km/h and that |
| 7176646 |
Electric power steering apparatus and electricity supply system |
February 13, 2007 |
| A transformer section transforms a primary voltage and outputs secondary voltage. A control section inputs a first signal indicating a state of electricity supply of a primary power source through an in-vehicle network. The transformer section outputs a second signal indicating a sta |
| 7171296 |
Integrated control apparatus for vehicle |
January 30, 2007 |
| An electronic control unit calculates a target yaw rate in accordance with a vehicle speed and a steering angle and calculates the yaw rate difference on the basis of the target yaw rate and an actual yaw rate. The electronic control unit estimates the grip factor of a front wheel to |
| 7164974 |
Vehicle roll sensing using load shift estimation |
January 16, 2007 |
| In vehicle roll sensing of the present invention, a self-aligning torque (SAT) estimator estimates a composite value of SATs generated on tire contact patch of right and left wheels. A slip angle computer detects a vehicle speed and a steering angle and computes a slip angle of the wheel |
| 7149615 |
Absolute steering angle detection device and absolute steering angle detection method for electr |
December 12, 2006 |
| A steering angle .theta.t detected by the torque sensor is read at S900. Then, an electrical angle .theta.m corresponding to a motor rotational angle is read at S902. At S908 through S922, motor rotational numbers are calculated based on .theta.t, .theta.m and the rotational number of a |
| 7147094 |
Drive power transmission control device |
December 12, 2006 |
| A drive power transmission control device is provided with an electromagnetic drive power transmission device and an ECU for controlling the application of electric current to an electromagnetic coil of the drive power transmission device. The ECU is bodily provided on a casing of th |
| 7146287 |
Resolver signal processing method and processing apparatus |
December 5, 2006 |
| The electrically-powered steering apparatus obtains a steering torque and a steering angle within an allowable input range of those inputted into a first resolver and a second resolver based on a real zero point .alpha. and further, a steering torque and a steering angle out of the allow |
| 7144347 |
Differential limiting device |
December 5, 2006 |
| A differential limiting device includes a planetary gear mechanism, in which a planetary carrier rotatably distributes the rotational power of a front housing to a ring gear and a sun gear through planetary gears and hence, to a first inner shaft and a second inner shaft which are ro |
| 7140775 |
Sliding guide apparatus |
November 28, 2006 |
| A sliding guide apparatus guides a movable member for a base. A pair of guide surfaces are formed on the base. A pair of sliding surfaces are formed on the movable member as so to be opposed to the pair of guide surfaces, respectively. Lubricating oil is supplied between the guide su |
| 7138795 |
Rotation angle detector and its temperature correcting method |
November 21, 2006 |
| A first sin phase voltage representing the rotational angle of a resolver is derived from the sum of a rotational angle voltage involving a temperature component and a bias voltage. The rotational angle voltage and the bias voltage are calculated by calculating the values of the maxi |
| 7136732 |
Electric power steering apparatus |
November 14, 2006 |
| An electric power steering apparatus transmits a driving force of an electric motor to a steering mechanism for steering assist. The apparatus includes a torque sensor which detects a steering wheel torque; a basic assist characteristic determining section which determines a basic assist |
| 7134638 |
Stop valve for gas tank |
November 14, 2006 |
| A stop valve for a gas tank is provided which achieves favorable sealing performance by inhibiting rotation of a sealing member attached to a valve element. A passage is formed inside a valve body, and a valve seat is provided in the passage. The valve element which is engaged and di |
| 7130728 |
Vehicle steering apparatus and method for controlling the same |
October 31, 2006 |
| A steer-by-wire steering apparatus for a vehicle has a first control system including a first ECU, and a second control system including a second ECU. Each ECU responds to manipulation of the steering wheel by a driver, and controls a steering motor. The first ECU determines whether |
| 7129663 |
Electric power steering apparatus and booster |
October 31, 2006 |
| An electric power steering apparatus includes a booster circuit and a microcomputer. The booster circuit includes a booster coil, a first FET, and a second FET. The booster coil is connected to the first FET, which is grounded. A node a between the booster coil and the first FET is c |
| 7129660 |
Motor-temperature estimation apparatus and motor control apparatus |
October 31, 2006 |
| A motor-current square value calculation section 45 calculates, as a motor-current square value, the sum of respective square values of two phase currents converted from three phase currents flowing through an electric motor. A temperature estimation calculation section 44 performs l |
| 7128654 |
Constant velocity joint |
October 31, 2006 |
| The contact angle of the ball 15 with each first guide track 21 of an inner joint member 12 is made to become smaller gradually from an opening portion side toward a bottom portion side, and the curvature radius for the first guide track 21 is made to become larger gradually from the |
| 7128542 |
Variable displacement pump |
October 31, 2006 |
| In a hydraulic pump, a cam ring is provided in a cylindrical adaptor for movement in a radial direction, and a differential pressure control valve is provided to control internal pressure and load pressure at the front and back sides of a variable orifice to be introduced into action |
| 7126304 |
Motor controller and electric power steering apparatus |
October 24, 2006 |
| A microcomputer includes a rotation angular velocity computation section, a feedback gain determination section, and a dead time compensation amount determination section. The rotation angular velocity determination section computes the rotation angular velocity of a brushless motor. |
| 7124855 |
Flow controlling apparatus for power steering |
October 24, 2006 |
| A flow controlling apparatus for a power steering system includes a variable throttle mechanism installed in the pump to change the flow rate of discharged oil from the pump to a hydraulic device; a linear solenoid mechanism controlling the variable throttle mechanism by a predetermined |
| 7122983 |
Rotating angle detecting apparatus and electric power steering apparatus |
October 17, 2006 |
| The invention provides an electric power steering apparatus which can detect a ground fault of an angular resolver without fault. Values of a first resistance (R1), a second resistance (R2), a third resistance (R3) and a fourth resistance (R4) are set such that a difference between a |
| 7121378 |
Transfer ratio varying apparatus |
October 17, 2006 |
| A transfer ratio varying apparatus includes: a steering shaft configured to transmit a steering angle, an actuator connected to the steering shaft and a damper disposed between the input shaft and the steering shaft and configured to absorb vibration caused by the actuator. The actuator |
| 7118453 |
Workpiece grinding method |
October 10, 2006 |
| In a workpiece grinding method, a grinding allowance of a predetermined width (T) at at least an end surface portion 21 of a workpiece W is removed with a grinding wheel 10 (or 32) by rotating the workpiece W having a cylindrical portion 20 and the end surface portion 21 perpendicula |
| 7116026 |
Adhesion structure for motor, having thickness determining means |
October 3, 2006 |
| An adhesion structure of a motor that adheres a rotor having a first linear expansion coefficient and a magnet having a second linear expansion coefficient, which differs from the first linear expansion coefficient, with an adhesive agent. The adhesion structure includes a thickness |
| 7115019 |
Grinding method and grinding machine |
October 3, 2006 |
| In a grinding machine, a generally cylindrical workpiece having at least first and second grinding areas is ground by use of a grinding wheel supported by a wheel head. The first grinding area is first ground such that power consumed by the grinding machine is maintained at a first l |
| 7111718 |
Driving force-transmitting device |
September 26, 2006 |
| A driving force-transmitting device 10 has a housing 11 and 12, an inner shaft 18, a main clutch 22, a pilot clutch 24 and a cam mechanism 23 including a first and second cam members 26 and 25. Plural main outer and inner clutch disks 20 and 21 of the main clutch 22 are respectively |
| 7107862 |
Torque sensor assembling method, torque sensor and electric power steering device |
September 19, 2006 |
| A method of assembling a torque sensor includes the steps of fixing a first inner coil portion at one end side of a torsion bar, fixing a second inner coil portion at an other end side of the torsion bar, measuring an angle difference between an angle of the first inner coil portion |
| 7104169 |
Machine tool and bed structure thereof |
September 12, 2006 |
| A machine tool includes X-axis, Y-axis, and Z-axis moving units for producing relative movements between a tool and a workpiece; a C-axis drive unit for rotating the workpiece about a C-axis parallel to the Z-axis; and a B-axis turning unit for turning the tool about a B-axis paralle |
| 7102622 |
Production equipment monitoring device |
September 5, 2006 |
| A production equipment monitoring device comprises a display panel providing a touch switch function, a touch switch display controller displaying on the display panel a touch switch corresponding to a general segmentary operating process, an operating status display controller disti |
| 7102322 |
Motor controller |
September 5, 2006 |
| A microcomputer includes an actual DUTY value detection section that detects an actual DUTY value .gamma.x by measuring the ratio of time in which an output voltage of each phase becomes a power supply voltage in a cycle of a triangular wave. A dead time compensation computation section |
| 7102305 |
Apparatus and method for controlling motor |
September 5, 2006 |
| A motor control apparatus includes a direct-current power source and an inverter circuit, which includes a switching element. The motor control apparatus receives a current command value in every control cycle and calculates a current deviation accumulated value by accumulating the c |
| 7101269 |
Cylindrical grinding machine |
September 5, 2006 |
| Disclosed is a cylindrical grinding machine of the type that a workpiece support device composed of a work head and a foot stock is mounted on a forward upper portion of a bed while a wheel head unit composed of a slide base and a wheel head is mounted on a rear upper portion of the |
| 7097585 |
Differential gearing for vehicle |
August 29, 2006 |
| An internal gear 10 is rotatably received within a housing 8 (planetary carrier 2 and case 4), and a sun gear 12 is rotatably disposed on a circle located inside of and concentric with the internal gear 10. Planet gears 14 which are carried within carrying openings 2c formed in a pla |
| 7096739 |
Pressure sensor containing fluorine-based adhesive |
August 29, 2006 |
| A pressure sensor is provided with a semiconductor device that is capable of detecting a pressure, a terminal that is connected to the semiconductor device by a bonding wire, a housing having an accommodation space for the semiconductor device, the bonding wire, and the terminal, a d |
