Patents by Inventor Masaki Yamano

Masaki Yamano 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: 20200086910
    Abstract: A steering device includes: an offset correction value storing section to store an offset correction value including a first offset correction value and a second offset correction value, the first offset value being a current value for correcting the first sensed current signal so that a value of a vibration of the electric motor is equal to or smaller than a first predetermined value when the motor rotation speed signal is a first rotation speed, and the second offset value being a current value for correcting the first sensed current signal so that the value of the vibration of the electric motor is equal to or smaller than a second predetermined value when the motor rotation speed signal is a second rotation speed.
    Type: Application
    Filed: August 28, 2019
    Publication date: March 19, 2020
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Atsushi HIRATA, Kazuya YAMANO, Tatsuro SUZUKI, Masaki KASHIMA
  • Patent number: 10416123
    Abstract: A method of adjusting flaw detection sensitivity on an array ultrasonic probe comprises disposing a plate material P1 oppositely to the ultrasonic probe such that an upper surface of the plate material is disposed to be approximately parallel to an array direction of the transducers 11, or disposing a tubular material P2 oppositely to the ultrasonic probe such that an axial direction of the tubular material is disposed to be approximately parallel to the array direction of the transducers. Ultrasonic waves are transmitted from each transducer toward the upper surface of the plate material or an outer surface of the tubular material, and echoes are received from the bottom surface of the plate material or an inner surface of the tubular material on each transducer. Flaw detection sensitivity of each transducer is adjusted to substantially equalize intensity of an echo received on each transducer.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: September 17, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Masaki Yamano, Yoshiyuki Nakao, Shigetoshi Hyodo, Masaki Tanaka, Tsukasa Suda
  • Publication number: 20190270482
    Abstract: There is provided a control device for a power steering device that provides stable steering feeling in the vicinity of a stroke end. The control device for the power steering device is configured to calculate a stopper torque that is a steering force in a direction opposite to a direction causing a turning angle to approach a stopper angle, based on a steering torque signal, when the turning angle approaches the stopper angle accompanied with a steering operation of a steering wheel, and configured to calculate a motor command signal that is used to drive a power-driven motor, based on a driving condition of a vehicle and the stopper torque.
    Type: Application
    Filed: March 15, 2017
    Publication date: September 5, 2019
    Applicant: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Yasuhito NAKAKUKI, Kazuya YAMANO, Masaki KODATO
  • Patent number: 9442096
    Abstract: An ultrasonic testing apparatus includes an ultrasonic probe disposed under an end portion of a pipe laid in the horizontal direction to face the pipe end portion. The probe transmits ultrasonic waves to the end portion of the pipe and receives the ultrasonic waves therefrom. A probe holder housing the probe includes a coupling medium reserver part which surrounds a space between the probe and the end portion of the pipe to contain a coupling medium W. The coupling medium reserver part includes a part body 21 into which the coupling medium is supplied; an annular bellows part, which is attached to the upper side of the part body to internally communicate with the part body, and an annular spacer 23 attached to the upper side of the bellows part, the upper surface of the annular spacer being a flat horizontal surface.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: September 13, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Kenji Fujiwara, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano
  • Patent number: 9335301
    Abstract: An ultrasonic testing equipment of the present invention includes: an ultrasonic probe having a plurality of transducers arranged along a predetermined annular curved surface; a transmission/reception control unit that causes at least two transducers selected from the plurality of the transducers to transmit the ultrasonic waves to and receive the same from the tubular test object and a ultrasonic testing waveform display unit which displays ultrasonic testing waveforms received by the selected transducers radially corresponding to the propagation directions of the ultrasonic waves transmitted from and received by the selected transducers.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: May 10, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masaki Yamano, Hiroshi Shikada, Kenji Fujiwara
  • Publication number: 20150135799
    Abstract: A method of adjusting flaw detection sensitivity on an array ultrasonic probe comprises disposing a plate material P1 oppositely to the ultrasonic probe such that an upper surface of the plate material is disposed to be approximately parallel to an array direction of the transducers 11, or disposing a tubular material P2 oppositely to the ultrasonic probe such that an axial direction of the tubular material is disposed to be approximately parallel to the array direction of the transducers. Ultrasonic waves are transmitted from each transducer toward the upper surface of the plate material or an outer surface of the tubular material, and echoes are received from the bottom surface of the plate material or an inner surface of the tubular material on each transducer. Flaw detection sensitivity of each transducer is adjusted to substantially equalize intensity of an echo received on each transducer.
    Type: Application
    Filed: May 17, 2013
    Publication date: May 21, 2015
    Inventors: Masaki Yamano, Yoshiyuki Nakao, Shigetoshi Hyodo, Masaki Tanaka, Tsukasa Suda
  • Patent number: 8776604
    Abstract: An ultrasonic probe for detecting a flaw by ultrasonic waves in a tubular test object includes a plurality of transducers arranged along an annular curved surface, wherein the annular curved surface is obtained by cutting a predetermined spheroid with two parallel planes facing to each other that do not pass through a center of the spheroid and do not sandwich the center of the spheroid, said two parallel planes being orthogonal to a rotational axis of the spheroid. A shape of said annular curved surface is determined so that when transducers appropriately selected from said plurality of transducers are caused to transmit and receive ultrasonic waves, respective internal refraction angles ?? of the ultrasonic waves are approximately equivalent regardless of propagation directions of the ultrasonic waves.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: July 15, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Masaki Yamano
  • Patent number: 8667847
    Abstract: An ultrasonic testing apparatus for a pipe end portion, which enables accurate ultrasonic testing, comprises an ultrasonic probe disposed under the pipe end portion. The probe 1 transmits ultrasonic waves to the pipe end portion and receives the ultrasonic waves therefrom. A probe holder houses the probe which is disposed under the pipe end portion to face the pipe end portion and follows the pipe rotation. The probe holder comprises a coupling medium reserver part that surrounds a space between the probe and the pipe end portion to contain a coupling medium therein and comprises a coupling medium reserver part body into which the coupling medium is supplied. An annular bellows part, which communicates with the reserver part body, can expand and contract vertically and an annular spacer, which is attached to the upper side of the bellows part and an upper surface thereof has a flat horizontal surface.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: March 11, 2014
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Kenji Fujiwara, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano
  • Publication number: 20140060195
    Abstract: An ultrasonic testing equipment of the present invention includes: an ultrasonic probe having a plurality of transducers arranged along a predetermined annular curved surface; a transmission/reception control unit that causes at least two transducers selected from the plurality of the transducers to transmit the ultrasonic waves to and receive the same from the tubular test object and a ultrasonic testing waveform display unit which displays ultrasonic testing waveforms received by the selected transducers radially corresponding to the propagation directions of the ultrasonic waves transmitted from and received by the selected transducers.
    Type: Application
    Filed: August 21, 2013
    Publication date: March 6, 2014
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Masaki YAMANO, Hiroshi Shikada, Kenji Fujiwara
  • Publication number: 20130276540
    Abstract: An ultrasonic testing apparatus includes an ultrasonic probe disposed under an end portion of a pipe laid in the horizontal direction to face the pipe end portion. The probe transmits ultrasonic waves to the end portion of the pipe and receives the ultrasonic waves therefrom. A probe holder housing the probe includes a coupling medium reserver part which surrounds a space between the probe and the end portion of the pipe to contain a coupling medium W. The coupling medium reserver part includes a part body 21 into which the coupling medium is supplied; an annular bellows part, which is attached to the upper side of the part body to internally communicate with the part body, and an annular spacer 23 attached to the upper side of the bellows part, the upper surface of the annular spacer being a flat horizontal surface.
    Type: Application
    Filed: October 18, 2012
    Publication date: October 24, 2013
    Inventors: Kenji FUJIWARA, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano
  • Patent number: 8544329
    Abstract: An ultrasonic testing equipment includes an ultrasonic probe having a plurality of transducers arranged along a predetermined annular curved surface, a transmission/reception control unit that causes at least two transducers of the plurality of transducers to transmit the ultrasonic waves to and receive the same from a tubular test object and a ultrasonic testing waveform display unit which displays ultrasonic testing waveforms received by the selected transducers radially corresponding to the propagation directions of the ultrasonic waves transmitted from and received by the selected transducers. The waveform display unit displays the waveforms radially with a point of time corresponding to an echo on an incident point of the ultrasonic wave to the test object contained in the waveform as a beginning point and displays circles indicating points of time corresponding to the echo on the internal surface and/or the external surface of the test object around the beginning point.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: October 1, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Masaki Yamano, Hiroshi Shikada, Kenji Fujiwara
  • Patent number: 8495915
    Abstract: A circumferential angle of incidence ?i of an ultrasonic wave transmitted from an ultrasonic probe 1 upon a tubular test object P and an axial angle of incidence ?i of the ultrasonic wave transmitted from the ultrasonic probe 1 upon the tubular test object P are set based on a ratio of thickness to outer diameter t/D of the tubular test object P so that an internal refraction angle ?k calculated from the circumferential angle of incidence ?i, the axial angle of incidence ?i, and the ratio of thickness to outer diameter t/D of the tubular test object may be not less than 35° and not more than 60°.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: July 30, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Masaki Yamano
  • Patent number: 8490490
    Abstract: The ultrasonic testing method includes the steps of arranging an ultrasonic probe having a plurality of transducers so as to face a tubular test object P, and causing the transducers appropriately selected from the plurality of transducers to transmit and receive ultrasonic waves so that the ultrasonic waves are propagated in the tubular test object in a plurality of different propagation directions, wherein a ultrasonic testing condition by the ultrasonic probe is set so that respective external refraction angles ?r of the ultrasonic waves in the plurality of propagation directions are approximately equivalent and/or respective internal refraction angles ?k of the ultrasonic waves in the plurality of propagation directions are approximately equivalent.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: July 23, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventor: Masaki Yamano
  • Patent number: 8438926
    Abstract: The present invention provides a method which allows simply, easily and accurately evaluating the fastening state of shoulder parts of a threaded joint for use as a joint of pipes or tubes, such as OCTG, during fastening or after fastening. The fastening state evaluation method for a threaded joint 100 of pipes or tubes according to the present invention is characterized in that it transmits ultrasonic surface waves from the internal surface of either one of the pin 1 and the box 2 toward the internal surface of the other one of the pin 1 and the box 2 through the shoulder parts 13, 23 of the pin 1 and the box 2, and on the basis of the transmitted wave intensity or the reflected wave intensity thereof, determines whether or not the fastening state of the threaded joint 100 is satisfactory.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: May 14, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Ikuji Hoshino, Masaki Yamano, Makoto Sakamoto, Keiichi Nakamura, Jun Masubuchi, Kenta Sakai
  • Patent number: 8413513
    Abstract: An ultrasonic testing equipment includes a linear array ultrasonic probe in which a plurality of transducers are arranged in a direction orthogonal to the rolling direction of a test object and a signal processing unit. The signal processing unit executes following (1) to (6). (1) Generating an aperture synthetic image of testing signals of each section of the test object. (2) Generating a maximum value distribution of testing signals in the arrangement direction of transducers. (3) Calculating the width of a defect in each section based on the maximum value distribution. (4) Generating a maximum value distribution of the testing signals in the rolling direction based on the maximum value distribution of a plurality of sections of the test object. (5) Calculating the length of the defect based on the maximum value distribution of the testing signals in the rolling direction. (6) Calculating the area of the defect based on the calculated defect length and the calculated defect width of each section.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: April 9, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Yoshio Ueda, Masaki Yamano, Masami Ikeda
  • Patent number: 8393218
    Abstract: An ultrasonic testing apparatus 100 comprises an ultrasonic probe 1 including n (n?2) number of transducers arranged along a predetermined direction, disposed so as to face a test object P, and a transmission/reception control device 2 for selecting m (n>m?1) number of transducers from among the n number of transducers, transmitting ultrasonic waves from the selected m number of transducers toward the test object, receiving the ultrasonic waves therefrom, and switched m number of transducers to b selected successively. If an angle that the arrangement direction of the transducers makes with the surface of the test object which ultrasonic waves enter is ?, and the effective beam width of each selected m number of transducers with respect to a target flaw is W1, the transmission/reception control device switches m number of transducers to be selected successively by a switching pitch length P satisfying the formula: P?W1·cos ?.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: March 12, 2013
    Assignee: Nippon Steel & Sumitomo Metal Corporation
    Inventors: Masaki Yamano, Masami Ikeda, Kenji Fujiwara, Hiroshi Kubota
  • Patent number: 8387462
    Abstract: Provided are an ultrasonic testing method and an ultrasonic testing apparatus capable of accurately detecting flaws present in a weld zone of a test object, such as a welded pipe, regardless of the position of the flaws. An ultrasonic testing apparatus 100 includes an ultrasonic probe 1 which is provided with n (n?2) transducers 11 arranged along a direction orthogonal to the weld line of a weld zone P1 of a test object P and is arranged so as to face the weld zone, and transmission/reception control means 2 which selects m (n>m?1) transducers from the n transducers, causes the selected transducers to transmit and receive ultrasonic waves to and from the weld zone, and switches the selected transducers one after another.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: March 5, 2013
    Assignee: Sumitomo Metal Industries, Ltd.
    Inventors: Masaki Yamano, Hiroyuki Okubo, Takumi Horikiri
  • Publication number: 20120167690
    Abstract: The ultrasonic testing method according to the invention includes the steps of arranging an ultrasonic probe 1 having a plurality of transducers 11 so as to face a tubular test object P, and causing the transducers appropriately selected from the plurality of transducers to transmit and receive ultrasonic waves so that the ultrasonic waves are propagated in the tubular test object in a plurality of different propagation directions, wherein a ultrasonic testing condition by the ultrasonic probe is set so that respective external refraction angles ?r of the ultrasonic waves in the plurality of propagation directions are approximately equivalent and/or respective internal refraction angles ?k of the ultrasonic waves in the plurality of propagation directions are approximately equivalent.
    Type: Application
    Filed: December 6, 2011
    Publication date: July 5, 2012
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventor: Masaki YAMANO
  • Publication number: 20120067127
    Abstract: The present invention provides a method which allows simply, easily and accurately evaluating the fastening state of shoulder parts of a threaded joint for use as a joint of pipes or tubes, such as OCTG, during fastening or after fastening. The fastening state evaluation method for a threaded joint 100 of pipes or tubes according to the present invention is characterized in that it transmits ultrasonic surface waves from the internal surface of either one of the pin 1 and the box 2 toward the internal surface of the other one of the pin 1 and the box 2 through the shoulder parts 13, 23 of the pin 1 and the box 2, and on the basis of the transmitted wave intensity or the reflected wave intensity thereof, determines whether or not the fastening state of the threaded joint 100 is satisfactory.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 22, 2012
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Ikuji HOSHINO, Masaki YAMANO, Makoto SAKAMOTO, Keiichi NAKAMURA, Jun MASUBUCHI, Kenta SAKAI
  • Publication number: 20120067129
    Abstract: An ultrasonic testing apparatus for a pipe end portion, which enables accurate ultrasonic testing, comprises an ultrasonic probe disposed under the pipe end portion. The probe 1 transmits ultrasonic waves to the pipe end portion and receives the ultrasonic waves therefrom. A probe holder houses the probe which is disposed under the pipe end portion to face the pipe end portion and follows the pipe rotation. The probe holder comprises a coupling medium reserver part that surrounds a space between the probe and the pipe end portion to contain a coupling medium therein and comprises a coupling medium reserver part body into which the coupling medium is supplied. An annular bellows part, which communicates with the reserver part body, can expand and contract vertically and an annular spacer, which is attached to the upper side of the bellows part and an upper surface thereof has a flat horizontal surface.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 22, 2012
    Applicant: SUMITOMO METAL INDUSTRIES, LTD.
    Inventors: Kenji Fujiwara, Hiroshi Kubota, Tomoyuki Obata, Masaki Yamano