Patent application number | Description | Published |
20110301796 | POWER TRANSMITTING APPARATUS FOR A HYBRID VEHICLE - A power transmitting apparatus for a hybrid vehicle can transmit the driving force of engine E to the motor M or reversely the driving force of motor M to the engine E when the vehicle is stopped while avoiding transmission of the driving force of either of them to the driving wheels D such that the vehicle remains stopped. In some embodiments, a power transmitting apparatus for a hybrid vehicle can comprise a first clutch operatively posited between an engine mounted on a vehicle to driving wheels in a power transmission system and configured to transmit or cutoff driving force of the engine to or from the driving wheels; a second clutch operatively positioned between a motor mounted on a vehicle to the driving wheels in a power transmission system and configured to transmit or cut off driving force of the motor to or from the driving wheels. The first and second clutches can operated based on the vehicle operating conditions such that power can be transmitted from one of the engine and the motor to the other of them by connecting them to each other while cutting off power transmission from the engine and the motor to the driving wheels. | 12-08-2011 |
20110308909 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus, such as an automotive transmission, can be configured to reduce the size of a torque converter as well as improve the flexibility of the torque converter's layout. A power transmitting apparatus configured to transmit power from a driving source of a vehicle to its wheels and can be configured selectively transmit or cutting-off the driving force to the wheels can comprise a torque converter having a torque amplifying function. A clutch mechanism can include a first clutch device to transmit the driving force to the wheels through a power transmitting system of the torque converter and a second clutch to transmit the driving force without the power transmitting system of the torque converter. A selecting device can control the first clutch device or the second clutch device in accordance with conditions of the vehicle including start of a vehicle from a stop. A damping mechanism for damping torque variation can be configured to transmit power between the driving source and the torque converter. | 12-22-2011 |
20110312465 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus, such as an automotive transmission, can be configured to improve vehicle starting performance by using the torque amplifying function of a torque converter, improve the power transmitting efficiency during steady vehicle operation and reduce the size of the power transmitting apparatus. A power transmitting apparatus configured to transmit power from a driving source of a vehicle to its wheels and can be configured selectively transmit or cutting-off the driving force to the wheels can comprise a torque converter having a torque amplifying function. A clutch mechanism can include a first clutch device to transmit the driving force to the wheels through a power transmitting system of the torque converter and a second clutch to transmit the driving force without the power transmitting system of the torque converter. A selecting device can control the first clutch device or the second clutch device in accordance with conditions of the vehicle including start of a vehicle from a stop. A planetary gear mechanism can be configured to select of the power transmission pathway during forward vehicle operation and switching of the power transmission pathway during reverse vehicle operation. | 12-22-2011 |
20120061198 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus with improved power transmitting efficiency and reduced lag time for shifting speeds can comprise a starting clutch mechanism configured to selectively transmit and cut off driving power of engine to wheels of a vehicle, a plurality of gear-stage clutch devices operatively positioned to transmit power between the starting clutch mechanism and the wheels, an input and an output of the plurality of gear-stage clutch devices configured at predetermined gear ratios, and a gear-stage selecting device configured to select any one of the gear-stage clutch devices in accordance with a vehicle operating condition and selectively set a gear ratio for power transmission from the engine to the wheels. The gear-stage clutch devices can comprise alternately arranged driving clutch discs and driven clutch discs, and hydraulic pistons. The hydraulic pistons can be configured to selectively engage or disengage the driving clutch discs and driven clutch discs such that driving power of the engine is transmitted to the wheels at a corresponding predetermined gear ratio when the driving clutch discs and driven clutch discs are engaged. | 03-15-2012 |
20120065022 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus for a vehicle mounted with a torque converter and an idle-stop mechanism can be configured to improve fuel economy without cancelling a fuel-cut-ff during vehicle speed reduction and to reduce the manufacturing cost by eliminating an electrically-driven oil pump. A power transmitting apparatus can comprise a torque converter, a clutch mechanism, an oil pump, a continuously variable transmission, a clutch control device, an engine control device, and a flow control device. The flow control device can be configured to limit or prevent the supply of oil to the torque converter by the oil pump and to prioritize the supply of oil to the clutch mechanism and the continuously variable transmission when the vehicle speed is reduced below a predetermined value with fuel being cut off by the engine control device during vehicle speed reduction. | 03-15-2012 |
20120067685 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus for a vehicle mounted with a torque converter can be configured to instantly supply sufficient oil to a clutch mechanism on restart of the engine after an idle-stop without an electrically-driven oil pump. A power transmitting apparatus can comprise a torque converter having a torque amplifying function, a clutch mechanism, an oil pump, a clutch control device, an engine control device, and a flow control device. The oil pump can be driven by the driving power of the engine to supply oil to the clutch mechanism and the torque converter to operate them. The flow control device can be configured to limit or prevent the supply of oil to the torque converter by the oil pump and to prioritize the supply of oil to the clutch mechanism when the engine is restarted by the engine control device after the idle-stopped condition. | 03-22-2012 |
20120199434 | POWER TRANSMITTING APPARATUS - A power transmitting apparatus can comprise a plurality of gear stage clutches arranged on the way of a power transmitting path between an engine and the wheels. Each of the gear stage clutches include alternately arranged driving clutch discs and driven clutch discs, hydraulic pistons actuated by hydraulic oil to selectively engage or disengage the driving clutch discs and driven clutch discs, hydraulic chambers for actuating the hydraulic pistons, and supplying ports communicating with oil passages formed within the input shaft and opening on the side surface of the input shaft for supplying the hydraulic chambers with hydraulic oil from the oil passages to actuate the hydraulic pistons. A plurality of the supplying ports can be formed on a same plane of a radial cross-section of the input shaft. | 08-09-2012 |
20120270702 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus for a vehicle mounted with a torque converter and an idle-stop mechanism can be configured to improve fuel economy without cancelling a fuel-cut-ff during vehicle speed reduction and to reduce the manufacturing cost by eliminating an electrically-driven oil pump. A power transmitting apparatus can comprise a torque converter, a clutch mechanism, an oil pump, a continuously variable transmission, a clutch control device, an engine control device, and a flow control device. The flow control device can be configured to limit or prevent the supply of oil to the torque converter by the oil pump and to prioritize the supply of oil to the clutch mechanism and the continuously variable transmission when the vehicle speed is reduced below a predetermined value with fuel being cut off by the engine control device during vehicle speed reduction. | 10-25-2012 |
20130045834 | POWER TRANSMITTING APPARATUSES - A power transmitting apparatus for a vehicle mounted with a torque converter can be configured to instantly supply sufficient oil to a clutch mechanism on restart of the engine after an idle-stop without an electrically-driven oil pump. A power transmitting apparatus can comprise a torque converter having a torque amplifying function, a clutch mechanism, an oil pump, a clutch control device, an engine control device, and a flow control device. The oil pump can be driven by the driving power of the engine to supply oil to the clutch mechanism and the torque converter to operate them. The flow control device can be configured to limit or prevent the supply of oil to the torque converter by the oil pump and to prioritize the supply of oil to the clutch mechanism when the engine is restarted by the engine control device after the idle-stopped condition. | 02-21-2013 |
20140048374 | POWER TRANSMITTING APPARATUS - A power transmitting apparatus can include a gear-stage clutch comprising alternately arranged driving clutch discs and driven clutch discs; hydraulic chambers for actuating a hydraulic piston; and hydraulic oil supplying ports communicating with oil passages opening on the side surface of the input shaft for supplying the hydraulic chambers with hydraulic oil from the oil passages to actuate the hydraulic piston. Power can be transmitted at a predetermined gear ratio by engaging clutch discs of the gear-stage clutch by selectively supplying the hydraulic chambers with hydraulic oil. An annular sealing member can be fitted in a recessed portion formed around each opening of the hydraulic oil supplying port on the outer circumference of the input shaft. The recessed portion can have a flattened bottom surface on which the sealing member is seated so that it is contacted with the flattened bottom surface of the recessed portion. | 02-20-2014 |
20140048375 | POWER TRANSMITTING APPARATUS - A power transmitting apparatus configured to connect an input from an engine and an output to a driving wheel side at a predetermined gear ratio and to arbitrarily set the gear ratio during power transmission from the engine to the wheels. The apparatus comprises: a first partition member and a second partition member arranged opposite each other to form hydraulic chambers; a first clutch disc group comprising interleaved driving and driven clutch discs; a second clutch disc group comprising interleaved driving and driven clutch discs; and a hydraulic piston actuated by hydraulic pressure supplied to the hydraulic chambers to engage or disengage the driving and driven clutch discs of either of the first clutch disc group or the second clutch disc group depending on the actuated direction of the hydraulic piston, the driving power transmitted at a desirable gear ratio by selectively actuating the hydraulic piston. | 02-20-2014 |
Patent application number | Description | Published |
20110128246 | TOUCH PANEL AND DISPLAY DEVICE WITH TOUCH PANEL - An electrostatic capacitive coupling type touch panel in which a period before wiring formed outside an input region is chipped or wire-broken due to deterioration of a mask pattern can be prolonged. The touch panel has an input region and plural wirings formed around the input region. The input region has plural X electrodes and plural Y electrodes crossing the X electrodes. The plural wirings are connected to corresponding electrodes of the plural X electrodes and Y electrodes. The plural wirings respectively have a conductive layer and a metal layer formed on the conductive layer. The conductive layer is formed to be wider than the metal layer. The plural wirings have a corner. Among the plural wirings, in the wiring provided in the farthest position from the input region, the corner of the metal layer is chamfered. | 06-02-2011 |
20140192278 | Touch Panel and Display Device with Touch Panel - An electrostatic capacitive coupling type touch panel including an input region having four sides, a peripheral region around the input region, terminals formed in the peripheral region along a first side of the input region, wirings formed in the peripheral region along second, third and fourth sides of the input region, and the input region having X and Y electrodes crossing. The wirings are connected between corresponding X or Y electrodes and wiring terminals plurality of terminals. A dummy wiring, which is not connected to any of the X electrodes or Y electrodes, is provided outside the wiring formed in a farthest position from the input region, and the dummy wiring extends through the peripheral region along the second, third and fourth sides of the input region, and electrically connects to at least one dummy wiring terminal. | 07-10-2014 |
Patent application number | Description | Published |
20090219241 | Liquid crystal display device - A liquid crystal display device has a liquid crystal display panel which includes: a first substrate; a second substrate; a liquid crystal composition which is sandwiched between the first substrate and the second substrate; a pixel region which is formed of a plurality of pixels arranged in a matrix array on the first substrate, each pixel including a pixel electrode, a counter electrode which faces the pixel electrode in an opposed manner, and a switching element which is electrically connected with the pixel electrode; and a driver circuit which is mounted on the first substrate along a first side of the pixel region. In such a liquid crystal display device, the driver circuit is configured to rewrite a video signal in each pixel of the pixel region for every 1 frame period via the switching element, the driver circuit includes a first AC driving mode in which polarity of a video signal to be rewritten in a frame period succeeding to the 1 frame period is inverted, and a second AC driving mode in which the polarity of the video signal to be rewritten in the succeeding frame period is equal to polarity of the video signal in the 1 frame period, and a reference voltage of the video signal is corrected so as to decrease brightness of the pixel in the second AC driving mode. | 09-03-2009 |
20110254827 | DISPLAY DEVICE - Provided are a display device and a method of driving the same, improving display quality by suppressing abnormal changes resulting from parasitic capacitance. The display device includes first and second pixel circuits having first and second switching elements and first and second display electrodes; and a display control voltage supply unit supplying a display control voltage to the first and second display electrodes. In a first write period, the display control voltage supply unit turns ON the first and second switching elements and supplies a display control voltage corresponding to display data of the first pixel circuit to the first and second display electrodes. In a second write period, the display control voltage supply unit maintains the switch of the second switching element to be in the ON state and supplies a display control voltage corresponding to display data of the second pixel circuit to the second display electrode. | 10-20-2011 |
20110292016 | Liquid crystal display device with decreased power consumption - The present invention relates to enhancing low power consumption of a display device having a SRAM. The display device includes a drive circuit receiving video data; video lines connected the drive circuit; and pixels connected to the video signals. The drive circuit includes a memory storing the video data in memory cells. Each memory cell includes a first inverter with input and output terminals connected to first and second nodes, respectively. A second inverter has output and input terminals connected to the first and second nodes, respectively. A First and second transistors between a first data line and the first node each have a control terminal connected to a first word line or a third word line, respectively. Third and fourth transistors between a second data line and the second node each have a control terminal connected to a second word line or a fourth word line, respectively. | 12-01-2011 |
20120154359 | STEREOSCOPIC DISPLAY DEVICE - The stereoscopic display device has a display panel, a barrier liquid crystal panel disposed on the display panel, and a driving circuit for driving the display panel and the barrier liquid crystal panel, in which the frame frequency of the display panel and the alternating frequency of the barrier liquid crystal panel are different, the barrier liquid crystal panel is driven by a driving voltage input from the driving circuit, the driving circuit has an inverter circuit for outputting the driving voltage, independently controls a p-type transistor and an n-type transistor in the inverter circuit, and has time periods in which both the p-type transistor and the n-type transistor are turned off when the driving voltage is switched from a high level to a low level or a low level to a high level. | 06-21-2012 |
20130321382 | LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption. | 12-05-2013 |
20150243241 | LIQUID CRYSTAL DISPLAY DEVICE - In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption. | 08-27-2015 |
Patent application number | Description | Published |
20090050725 | FISHING REEL, FISHING DATA DISPLAY DEVICE, AND FISHING DATA DISPLAY SYSTEM - A fishing reel | 02-26-2009 |
20090172992 | FISHING REEL, FISHING INFORMATION DISPLAY APPARATUS, AND FISHING INFORMATION DISPLAY SYSTEM - A fishing reel has a reel unit that is mounted on the fishing rod, a spool that is rotatably attached to the reel unit, a tension detector that detects tension applied to the said fishing line, and a communication portion that transmits to a fishing information display apparatus data of the tension applied to the fishing line detected by the tension detector. The fishing information display apparatus is provided externally of a fishing reel, and receives data communicated from the fishing reel. The fishing information display apparatus includes a body member, a display portion provided in the body member, a communication portion that receives from the fishing reel data of the tension applied to the fishing line, and a controller that is displays on the display portion the data of tension received from the fishing reel. A navigator away from an angler can certainly have information of the fishing situation. | 07-09-2009 |
20100038464 | SPOOL SHAFT SUPPORT STRUCTURE FOR DUAL-BEARING REEL - The spool shaft comprises a shaft portion, two annular first annular portions arranged on opposite ends of the shaft portion, and an annular second larger diameter portion arranged on the end of the shaft portion positioned remote from a center of the spool. Each of the first annular portions and the second larger diameter portion have an outer diameter that is larger than the outer diameter of the shaft portion. The second larger diameter portion is arranged on an outward side of the first annular portion in the axial direction so as to create a space therein between the first annular portion and second larger diameter portion. | 02-18-2010 |
Patent application number | Description | Published |
20090002871 | METHOD AND APPARATUS FOR HEAD POSITIONING USING SPIRAL SERVO PATTERNS IN A DISK DRIVE - According to one embodiment, a disk drive having a disk, a read head, a servo controller, and a CPU. In the disk, a multi-spiral servo pattern is recorded. The read head reproduces a hexagon-shaped detection signal from the multi-spiral servo pattern. The servo controller generates amplitudes values for respective frames, from the multi-spiral servo pattern. The CPU performs positional-error calculation by using the amplitude values for the frames. Upon detecting a positional change of the head is detected, the CPU performs the positional-error calculation by using the amplitude values generated at the time of replacing the frames with other frames, and corrects the positional error by adding an offset determined from the positional change of the head, to the result of the positional-error calculation. | 01-01-2009 |
20090002872 | METHOD AND APPARATUS FOR POSITIONING HEAD ON DATA TRACK WITH A VARIABLE TRACK WIDTH IN A DISK DRIVE - According to one embodiment, there is provided a disk drive has a controller that performs positioning control of a head on a data track with a variable track width. The disk drive has a disk in which concentric servo tracks are configured at regular intervals and in which the positions of the individual servo tracks and servo data including position information that enables a position in the range of a servo track width to be detected in units of a specific minimum offset are recorded. The controller performs positioning control of the head on a data track with a variable track width on the basis of the servo track. | 01-01-2009 |
20090168218 | DISK DRIVE DEVICE AND SERVO WRITE METHOD - According to one embodiment, a servo write module is configured to write radial servo patterns on the disk media using a first spiral servo pattern of the spiral servo patterns as a base pattern for tracing, to detect a shift amount of a sync mark position in each of other spiral servo patterns with respect to a sync mark position in the first spiral servo pattern, and to adjust, when the base pattern is switched from the first spiral servo pattern to a second spiral servo pattern of the spiral servo patterns, a phase of the servo write clock based on the detected shift amount corresponding to the second spiral servo pattern. | 07-02-2009 |
20090168225 | DISK DRIVE DEVICE AND HEAD POSITIONING CONTROL METHOD - According to one embodiment, a disk drive includes a detection signal producing module configured to produce a detection signal by reading each of the spiral servo patterns, the spiral servo patterns being read by a head while the head scans a circumferential direction region on the disk media. A position error computation module is configured to produce servo burst signals A, B, C, and D using a plurality of frames obtained by dividing the detection signal at even time intervals, at least one burst signal of the servo burst signals being produced using at least two frames in the frames, and to compute a position error of the head based on amplitude values of the produced burst signals. | 07-02-2009 |
Patent application number | Description | Published |
20110003147 | PRESSURE SENSITIVE ADHESIVE SHEET FOR DICING - The present invention relates to a pressure-sensitive adhesive sheet for dicing, which comprises a substrate and at least one pressure-sensitive adhesive layer disposed on at least one surface of the substrate, the substrate containing polyvinyl chloride as a primary component and a trialkyl phosphite as a thermal stabilizer of the polyvinyl chloride, and the pressure-sensitive adhesive layer containing poly(meth)acrylic acid ester as a primary component, in which the trialkyl phosphite transited from the substrate into the pressure-sensitive adhesive layer is not unevenly distributed on a surface of the pressure-sensitive adhesive layer; a method of processing a processed material using the same, and a piece of a processed material obtainable by the method. | 01-06-2011 |
20120148781 | METHOD FOR MANUFACTURING OPTICAL DISPLAY UNIT, AND SHEET MATERIAL AND ROLL FOR USE THEREIN - A material roll including a roll of a continuous sheet material, including an optical member including a polarizer and a release film provided on one side of the optical member with an adhesive interposed therebetween, wherein when no external force is applied, the continuous sheet material curls in the longitudinal direction in such a way that the release film is facing inward, and the continuous sheet material is for use in a process including bonding the optical member to a substrate with the adhesive interposed therebetween to form an optical display unit. | 06-14-2012 |
20130098524 | ADHESIVE POLARIZATION PLATE, IMAGE DISPLAY AND METHODS FOR MANUFACTURING ADHESIVE POLARIZATION PLATE AND IMAGE DISPLAY - A method for manufacturing a pressure-sensitive adhesive polarizing plate comprising a polarizer (P), a transparent protective film (E) provided on only one side of the polarizer (P) with an adhesive layer (G) interposed therebetween, and a pressure-sensitive adhesive layer (B) provided on another side of the polarizer (P) with a protective layer (H) interposed therebetween, the method including forming the protective layer (H) on one side of the polarizer (P) and then placing the pressure-sensitive adhesive layer (B) on the protective layer (H), so that a laminate of the polarizer (P) and the pressure-sensitive adhesive layer (B) is formed, wherein the protective layer (H) has a tensile modulus of 100 MPa or more. | 04-25-2013 |
20130126085 | ADHESIVE POLARIZATION PLATE, IMAGE DISPLAY AND METHODS FOR MANUFACTURING ADHESIVE POLARIZATION PLATE AND IMAGE DISPLAY - A method for manufacturing an image display, includes: preparing a roll of a long sheet of a pressure-sensitive adhesive polarizing plate comprising a polarizer (P), a transparent protective film (E) provided on only one side of the polarizer (P) with an adhesive layer (G) interposed therebetween, and a pressure-sensitive adhesive layer (B) provided on another side of the polarizer (P) with a protective layer (H) having a tensile modulus of 100 MPa or more interposed therebetween; cutting the pressure-sensitive adhesive polarizing plate into a predetermined size, while feeding the sheet from the roll; and bonding the pressure-sensitive adhesive polarizing plate to an optical display unit with the pressure-sensitive adhesive layer (B) interposed therebetween after the cutting step. | 05-23-2013 |
Patent application number | Description | Published |
20100300611 | METHOD FOR MANUFACTURING OPTICAL DISPLAY UNIT, AND SHEET MATERIAL AND ROLL FOR USE THEREIN - An optical display unit manufacturing method includes subjecting a sheet material having curling properties to half cutting and bonding the cut piece of the sheet material to a substrate with an adhesive interposed therebetween, while peeling off the member left uncut and can solve the problem of peeling of the cut piece of the sheet material during feeding after the half cutting in such a process, so that the cut piece of the sheet material can be bonded to the substrate in a satisfactory manner. A method for manufacturing an optical display unit comprising a step for feeding a continuous sheet material from a roll of the continuous sheet material, wherein the continuous sheet material comprises the optical member and a release film provided on one side of the optical member with the adhesive interposed therebetween, and cutting the sheet material by cutting means, while leaving the release film uncut and bonding the sheet material to the substrate with the adhesive interposed therebetween, while removing the release film. When no external force is applied, the sheet material curls in the longitudinal direction in such a way that the release film is facing inward. | 12-02-2010 |
20110043733 | ADHESIVE POLARIZATION PLATE, IMAGE DISPLAY AND METHODS FOR MANUFACTURING ADHESIVE POLARIZATION PLATE AND IMAGE DISPLAY - Provided is a pressure-sensitive adhesive polarizing plate, including: a polarizer (P); a transparent protective film (E) provided on only one side of the polarizer (P) with an adhesive layer (G) interposed therebetween; a pressure-sensitive adhesive layer (B) provided on another side of the polarizer (P) with a protective layer (H) having a tensile modulus of 100 MPa or more interposed therebetween. The pressure-sensitive adhesive polarizing plate satisfies durability even under harsh environments at a low temperature and a high temperature. | 02-24-2011 |
20110128477 | IMAGE DISPLAY DEVICE - Provided is an image display device including an image display cell and a polarizing plate placed on a viewer side of the image display cell. The first polarizing plate includes a polarizer and a first protective film. The first protective film is placed on a viewer-side principal surface of the polarizer and satisfies following relations: (i) 0 nm≦Re | 06-02-2011 |
20110194048 | LIQUID CRYSTAL DISPLAY DEVICE - Provided is a liquid crystal display in which occurrence of iridescent unevenness is suppressed, even when a film with high level of mechanical properties, chemical resistance and water-barrier properties is used as a polarizer-protective-film. Also, disclosed is a polarizing plate to be used in the liquid crystal display. The liquid crystal display includes a liquid crystal cell, a light source, a first polarizing plate placed between the liquid crystal cell and the light source, and a second polarizing plate placed on a viewer side of the liquid crystal cell. The first polarizing plate includes a polarizer and a first protective film placed on a light source side principal surface of the first protective film, and the first protective film satisfies following relations: (i) 0 nm≦Re | 08-11-2011 |
Patent application number | Description | Published |
20130008275 | Method for Manufacturing Nut for Ball Screw and Ball Screw - A method forms a concave constituting a ball return passage directly on an inner circumferential surface of a nut blank by plastic working without damaging a die. Letter S shaped concaves are formed on an inner circumferential surface of a nut blank, by pressing by use of a die having a blank holder, a cam driver, cam sliders, and a cylindrical member. The cam driver has inclined surfaces having the same angle of inclination as the cam sliders. The cam sliders have letter S shaped convexes corresponding to the letter S shaped concaves, and are held by through holes, respectively. When the cam driver is pressed from the top thereof, the cam sliders move outwardly in the radial direction, respectively, and the letter S shaped convexes push the inner circumferential surface of the nut blank for plastic deformation. | 01-10-2013 |
20130139628 | Method of Production of Nut for Ball Screw Use and Ball Screw - A method forms ball recirculation and rolling grooves at an inner circumferential surface of a nut for ball screw use in a state free of deviation in axial, circumferential, and radial nut directions. A flange end face is formed with a concave part, then an inner circumferential surface of a blank and an end face and outer circumferential surface of the flange are continuously ground. Due to this, the coaxiality of the blank inner circumferential surface and the flange outer circumferential surface, and the perpendicularity of the flange end face to the blank inner circumferential surface, are made smaller. The blank is plastically worked to form the ball recirculation groove and is cut to form the ball rolling groove while using the concave part as a phase reference, the end face as an axial direction reference, and the outer circumferential surface as a radial direction reference. | 06-06-2013 |
20130220047 | Ball Screw - A ball screw having a groove-shaped ball return passage has improved durability, ball circulation performance, and working performance. The ball screw is provided with: a threaded shaft having a spiral groove at its outer circumferential surface; a nut having a spiral groove which faces the spiral groove at its inner circumferential surface; a plurality of balls rotatably loaded in a spiral raceway constituted by the two spiral grooves; and a ball circulation groove which returns and circulates the balls from an end point to a start point of the raceway. Further, the edge portions constituted by the two side surfaces of the ball circulation groove and the surfaces which continue from the side surfaces and extend in the axial direction are formed to be rounded. | 08-29-2013 |
20130239400 | Method of Manufacturing Continuously Variable Transmission Variator Component and Chuck Apparatus for Manufacturing Variator Component - Provided is a method of manufacturing a variator component comprising a step of performing, on a variator component workpiece, pre-machining of a power transmission surface and spline holes while leaving machining allowance, a step of performing workpiece thermal hardening, a step of performing finish-machining of multiple spline grooves constituting the workpiece spline holes, a step of snugly abutting part of a chuck mounted on a lathe or a grinder into multiple spline grooves and clamping the workpiece coaxially with the rotational axis of the chuck, and a step of performing finish-machining of the power transmission surface of the workpiece using ball spline grooves of the workpiece clamped by the collet chuck as a machining reference. | 09-19-2013 |
20150024900 | Toroidal Continuously-Variable Transmission - Construction of a toroidal continuously-variable transmission is achieved that simplifies the manufacture of parts, management of parts and assembly work, is able to easily reduce costs, stabilizes speed change operations, and is processed easily. An outer ring | 01-22-2015 |