Patents by Inventor Yasuo Shimizu

Yasuo Shimizu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120137789
    Abstract: a magnetostrictive torque sensor includes a rotation shaft, a magnetostrictive member, and a plurality of detectors. The rotation shaft is rotationally supported. The magnetostrictive member is disposed on a surface of the rotation shaft and being deformable in accordance with a magnitude of rotation torque applied to the rotation shaft to change magnetic permeability. The plurality of detectors are disposed on a periphery of the rotation shaft. Each of the detectors is configured to detect a change in magnetic permeability of the magnetostrictive member in a form of an electrical change. The detectors are configured to detect different amounts of electrical change from one another if amounts of change in deformation are same throughout the magnetostrictive member.
    Type: Application
    Filed: November 22, 2011
    Publication date: June 7, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yutaka ARIMURA, Yasuo SHIMIZU, Takeshi WAKABAYASHI
  • Patent number: 8181549
    Abstract: An electric power steering apparatus 10 has an electric motor 46 for supplying an auxiliary force to a steering force inputted from a steering wheel 16, and transmits the steering force including the auxiliary force to a steered road-wheel 14 at least partially via a rack-and-pinion mechanism 30, thereby performing steering of a vehicle 12. The rack-and-pinion mechanism 30 includes: a pinion 38 provided at a pinion shaft 28 connected to the steering wheel 16; a rack 40 that is provided over a predetermined width at a rack shaft 32 connected to the steered road-wheel 14, and that is engaged with the pinion 38; and a rack guide 70 for urging the rack shaft 32 toward the pinion 38. A pressure angle ?1 of a tooth root of the rack 40 is set to be greater than a pressure angle ?0 of a tooth tip of the rack 40.
    Type: Grant
    Filed: April 1, 2009
    Date of Patent: May 22, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Katsuji Watanabe, Yasuo Shimizu, Tsuyoshi Matsuo, Yousuke Tanaka
  • Patent number: 8125175
    Abstract: An electric steering system is provided with: a steering torque detection unit which detects a steering torque acting on the shaft; a brushless motor which includes a rotor and a stator having multi-phase stator coils, and generates an assisting torque for assisting the steering torque; a current supply switching unit which drives the brushless motor; a rotary angle estimation unit which outputs an estimated rotary angle; a determination unit which determines whether or not the estimated rotary angle is appropriate by comparison with a direction of the steering torque; and a steering control unit which drives the brushless motor in accordance with the estimated rotary angle determined to be appropriate by the determination unit to control generation of the assisting torque.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: February 28, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsuhiko Yoneda, Yasuo Shimizu, Takashi Miyoshi
  • Publication number: 20120034731
    Abstract: A photoelectric conversion device manufacturing system in which a photoelectric conversion device is manufactured, the photoelectric conversion device including a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer which are sequentially layered on a transparent-electroconductive film formed on a substrate in the photoelectric conversion device.
    Type: Application
    Filed: April 6, 2010
    Publication date: February 9, 2012
    Applicant: ULVAC, INC.
    Inventors: Takafumi Noguchi, Hideyuki Ogata, Katsuhiko Mori, Yasuo Shimizu, Hiroto Uchida, Shin Asari
  • Publication number: 20120018241
    Abstract: Disclosed are a magnetostrictive torque sensor and an electrical power steering device, wherein a first torque sensor has: one magnetostrictive film provided on a steering shaft; a first coil and a second coil that detect changes in the magnetic characteristics of the magnetostrictive film; and a first housing that contains, at least, the steering shaft, the magnetostrictive film, the first coil, and the second coil. The first housing has a resin part, a cylindrical part made of a metal that is soft magnetic, and a flange part made of a metal that is soft magnetic. The resin part, the cylindrical part, and the flange part are formed as a unit.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 26, 2012
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yasuo Shimizu, Atsuhiko Yoneda, Yutaka Arimura, Yoshihiro Oniwa
  • Publication number: 20120015473
    Abstract: A photoelectric conversion device manufacturing method manufactures a photoelectric conversion device in which a first photoelectric conversion unit and a second photoelectric conversion unit are sequentially stacked on a transparent-electroconductive film formed on a substrate. The method includes: forming each of a first p-type semiconductor layer, a first i-type semiconductor layer, a first n-type semiconductor layer, and a second p-type semiconductor layer in a plurality of first plasma CVD reaction chambers; exposing the second p-type semiconductor layer to an air atmosphere; supplying a gas including p-type impurities to inside a second plasma CVD reaction chamber before forming of the second i-type semiconductor layer; forming the second i-type semiconductor layer on the second p-type semiconductor layer that was exposed to an air atmosphere, in the second plasma CVD reaction chamber; and forming the second n-type semiconductor layer on the second i-type semiconductor layer.
    Type: Application
    Filed: January 29, 2010
    Publication date: January 19, 2012
    Applicant: ULVAC, INC.
    Inventors: Hiroto Uchida, Tetsushi Fujinaga, Masafumi Wakai, Tadamasa Kobayashi, Yoshinobu Ue, Kyuzo Nakamura, Shin Asari, Kazuya Saito, Koichi Matsumoto, Yasuo Shimizu, Katsuhiko Mori
  • Patent number: 8095258
    Abstract: When a hybrid ECU determines that a malfunction in which a moment-adding flywheel cannot be connected to an engine occurs, an engine ECU controls a rotational speed of the engine to a value higher than that in a normal operation. Further, when the hybrid ECU determines that a malfunction in which the moment-adding flywheel cannot be disconnected from the engine occurs, a control is executed so that a ratio of a torque of a first motor to a torque of the engine is higher than that in the normal operation.
    Type: Grant
    Filed: May 10, 2007
    Date of Patent: January 10, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideto Watanabe, Yasuo Shimizu
  • Publication number: 20110303480
    Abstract: In an electric power steering apparatus, an elastic member, disposed between the steering shaft and the housing, configured to be elastically deformed in accordance with rotation or displacement in a vehicle width direction, of the steering shaft. At least two bearings, disposed with a gap in an axial direction of the steering shaft, are configured to support the steering shaft. The elastic member is disposed between the bearings. A supporting member may be disposed between the steering shaft and the elastic member and configured to be displaced by a rotation of a predetermined angle or predetermined distance in accordance with the rotation or a displacement, in the width direction of the vehicle, of the steering shaft with slidable support for the steering shaft. The elastic member is fixed to the supporting member and abuts the housing.
    Type: Application
    Filed: June 10, 2011
    Publication date: December 15, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Yasuo SHIMIZU, Atsuhiko Yoneda, Shigeru Yamawaki, Takehito Shiraishi
  • Patent number: 8066092
    Abstract: An electric power steering device is configured to transmit an auxiliary torque to a steering unit of front wheels, and includes: an operator; an electric motor configured to generate the auxiliary torque in accordance with at least a steering torque generated by input from the operator; the steering unit of front wheels which includes a pinion shaft; and a rotation terminating mechanism which provides a motion terminating end of the operator, the rotation terminating mechanism being disposed between the operator and the pinion shaft.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: November 29, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Yasuo Shimizu, Katsuji Watanabe, Atsuhiko Yoneda, Shigeru Yamawaki
  • Publication number: 20110283521
    Abstract: An electrically powered steering apparatus in which at least one torque selected from a steering torque and a motor torque is transmitted from a torque transmission shaft to a rack-and-pinion mechanism to steer steered wheels. The torque transmission shaft has a torque-side shaft provided with a magnetostrictive film of a magnetostrictive sensor for sensing torque; and a pinion shaft provided with a pinion of the rack-and-pinion mechanism. The torque-side shaft and the pinion shaft are separate components which are linked together.
    Type: Application
    Filed: August 1, 2011
    Publication date: November 24, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Yasuo Shimizu
  • Patent number: 8052066
    Abstract: A hybrid vehicle can be driven using both of respective driving forces from an engine and a motor. A heating mechanism of an air conditioning apparatus uses thermal energy from cooling water of the engine to heat the interior of a passenger compartment. An ECU takes into consideration engine efficiency from the standpoint of fuel economy enhancement to primarily determine the driving force share ratio between the engine and the motor. Further, the ECU calculates a preset temperature corresponding to a cooling water temperature necessary for desired heating as well as a control target temperature in which the preset temperature is reflected, and corrects the primarily determined driving force share ratio to increase the share of the driving force of the engine by an amount according to a deviation between the cooling water temperature measured by a water temperature sensor and the control target temperature. Heating performance can thus be ensured promptly without deterioration of fuel economy.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: November 8, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideto Watanabe, Yasuo Shimizu
  • Patent number: 8042818
    Abstract: An electric damper which does not transmit unbalance wheel vibration to a vehicle body is provided. A low-pass cutoff frequency setting unit and a high-pass cutoff frequency setting unit respectively set the cutoff frequencies for band-stop filters to a frequency band corresponding to unbalance wheel vibration based on a signal indicating a vehicle speed from a vehicle speed sensor, and a function as a band-stop filter comprising a low-pass filter computation unit, a high-pass filter computation unit and an adder is computed for a displacement rate of the vertical motion of a wheel calculated by a differentiating unit in a damper control unit. A damper control amount computation unit calculates a control amount of controlling an electric motor for a motor-driven damper based on the calculated filtered displacement rate, and outputs a control signal to a motor driving unit through a driving circuit output unit.
    Type: Grant
    Filed: March 3, 2009
    Date of Patent: October 25, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Shigeru Yamawaki, Yasuo Shimizu, Katsuji Watanabe, Atsuhiko Yoneda
  • Publication number: 20110240400
    Abstract: An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conducted by a driver. An overload preventing control is conducted so that a sum of a torque conversion value of an assist current and a steering torque detected by the steering torque sensor equal a predetermined threshold value. When the steering gear box has reached a stroke end, and the assist current or the steering torque is smaller than a predetermined threshold value, the overload preventing control is conducted using a threshold value that is less than the predetermined threshold value.
    Type: Application
    Filed: June 10, 2011
    Publication date: October 6, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventor: Yasuo SHIMIZU
  • Publication number: 20110231066
    Abstract: A q-axis target current setting unit generates a q-axis current command value based on a steering input signal from a steering torque sensor and a vehicle speed signal from a vehicle speed sensor. An electric motor generates a predetermined torque based on the q-axis current command value and a q-axis current (a torque current) to which a fed back q-axis real current is added. On the other hand, a d-axis correction current setting unit sets a field weakening current (a d-axis current) in response to a voltage saturation (duty ratio=driving voltage of electric motor/power supply voltage) output from a voltage saturation calculating unit. For this reason, when the voltage saturation becomes high, distortion (harmonics component) in current can be decreased by decreasing the voltage saturation while keeping the torque constant using a predetermined torque current, and a torque ripple can be suppressed.
    Type: Application
    Filed: March 16, 2011
    Publication date: September 22, 2011
    Inventors: Satoshi Ohno, Takashi Miyoshi, Atsuhiko Yoneda, Yasuo Shimizu
  • Patent number: 8011256
    Abstract: A magnetostrictive torque sensor includes a single magnetostrictive film disposed on a steering shaft, and first and second coils for detecting changes in a magnetic property of the magnetostrictive film. The single magnetostrictive film includes a first anisotropic region and a second anisotropic region, having respective magnetic anisotropies inverse to each other. The first coil is disposed in confronting relation to the first anisotropic region, whereas the second coil is disposed in confronting relation to the second anisotropic region.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: September 6, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Atsuhiko Yoneda, Yasuo Shimizu
  • Patent number: 7992672
    Abstract: An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conducted by a driver. An overload preventing control is conducted so that a sum of a current conversion value of a steering torque detected by the steering torque sensor and an assist current calculated based on the steering torque becomes equal to a limit value. When the steering gear box has reached a stroke end, the assist current is prevented from excessively increasing, thereby preventing a reduction in durability of the steering gear box or a motor of the steering actuator.
    Type: Grant
    Filed: November 30, 2007
    Date of Patent: August 9, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventor: Yasuo Shimizu
  • Publication number: 20110189384
    Abstract: A thin-film solar cell manufacturing apparatus includes a film forming chamber that is evacuated to a reduced pressure and forms a film on a substrate using a CVD method; a loading-ejecting chamber that is connected to the film forming chamber via a first opening-closing part and that is switchable between atmospheric pressure and reduced pressure; a first carrier that holds a pre-processed substrate; and a second carrier that holds a post-processed substrate, wherein the loading-ejecting chamber simultaneously stores the first carrier and the second carrier.
    Type: Application
    Filed: June 3, 2009
    Publication date: August 4, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuo Shimizu, Hideyuki Ogata, Koichi Matsumoto, Takafumi Noguchi, Jouji Wakamori, Satohiro Okayama, Yawara Morioka, Noriyasu Sugiyama, Takashi Shigeta, Hiroyuki Kurihara, Kazuya Saito
  • Publication number: 20110126612
    Abstract: Disclosed is a gas sensor in which electrode pins including a plurality of electrode pins (71, 72) which are electrically connected to a gas-sensitive element and support the gas-sensitive element are each made to pass through one surface of a mounting base (in the drawing, provided on the lower side of a holder with spring properties (12)) to the other surface (rear surface) thereof and are supported therein. The end portions of the electrode pins are made to project into grooves (4b) through through-holes (4a) in a spacer (4), and a plurality of lead-out leads (51-53) that are parallel to the rear surface of the mounting base and also extend in a direction parallel to a holder board (11) are connected to projecting portions of the electrode pins by connecting portions (51a, 51b, 52a, 53a). A pressing member (6) is placed thereover and is fixed and held on the holder board (11) by the holder (12) which has spring properties.
    Type: Application
    Filed: July 29, 2009
    Publication date: June 2, 2011
    Applicant: CITIZEN FINETECH MIYOTA CO., LTD.
    Inventors: Yasuo Shimizu, Ikuo Takahashi, Hiromichi Kobayashi
  • Publication number: 20110120370
    Abstract: A thin-film solar cell manufacturing apparatus includes a film forming chamber which stores a substrate; and an electrode unit which performs film formation using a CVD method on the substrate in the film forming chamber. The electrode unit has an anode and a cathode; and a side wall portion which holds the anode and the cathode and forms a part of a wall portion of the film forming chamber, and is attachable to and detachable from the film forming chamber.
    Type: Application
    Filed: June 3, 2009
    Publication date: May 26, 2011
    Applicant: ULVAC, INC.
    Inventors: Yasuo Shimizu, Hideyuki Ogata, Koichi Matsumoto, Takafumi Noguchi, Jouji Wakamori, Satohiro Okayama, Yawara Morioka, Noriyasu Sugiyama, Takashi Shigeta, Hiroyuki Kurihara
  • Publication number: 20110118951
    Abstract: When the variation of the KCS learning value is large, an ISC learning control is performed in a learning acceleration mode in which the amount of the ISC learning update is large and the ISC learning is performed at high speed. By thus performing the ISC learning control in the learning acceleration mode in which the ISC learning is performed at high speed, the ISC learning control can quickly follow up a great variation of the KCS learning value, and the time required for the ISC control value to converge to the most suitable one can be shortened. With this, the ISC learning control performed during idling of a hybrid car can be completed in a short time, and the fuel consumption enhancement effect by idling stop can be heightened.
    Type: Application
    Filed: November 13, 2006
    Publication date: May 19, 2011
    Inventors: Hideto Watanabe, Taku Harada, Yasuo Shimizu