Patents by Inventor Yoshikatsu Sakai

Yoshikatsu Sakai 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).

  • Patent number: 10006843
    Abstract: Provided is a method for predicting the remaining life of a hose and a method for diagnosing the deterioration level of a hose that can be easily performed without breaking the hose. The disclosure includes: a testing step of performing a hose bending test; and a predicting step of predicting the remaining life of a hose subject to prediction, wherein during the hose bending test, either a value of an external force required to displace a hose portion in a direction of the external force by a predetermined displacement amount, or a value of a displacement amount in a direction of the external force of the hose portion when the external force of a predetermined magnitude is exerted on the hose portion is measured, and the measured value is obtained as the test result.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: June 26, 2018
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Taisuke Kuroda, Kouji Suzuki, Yoshikatsu Sakai
  • Publication number: 20170082526
    Abstract: Provided is a method for predicting the remaining life of a hose and a method for diagnosing the deterioration level of a hose that can be easily performed without breaking the hose. The disclosure includes: a testing step of performing a hose bending test; and a predicting step of predicting the remaining life of a hose subject to prediction, wherein during the hose bending test, either a value of an external force required to displace a hose portion in a direction of the external force by a predetermined displacement amount, or a value of a displacement amount in a direction of the external force of the hose portion when the external force of a predetermined magnitude is exerted on the hose portion is measured, and the measured value is obtained as the test result.
    Type: Application
    Filed: March 19, 2015
    Publication date: March 23, 2017
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Taisuke KURODA, Kouji SUZUKI, Yoshikatsu SAKAI
  • Publication number: 20100277456
    Abstract: A method of driving an information display panel: in which display media constituted by particles including charged particles are sealed between two substrates, at least one substrate being transparent; in which the display media, to which an electrostatic field is applied, are made to move so as to display an information image; and in which, after an erasing wherein a color is displayed on a whole screen is performed, a rewriting of an information display is performed in such a manner that a color at the erasing is changed by applying a voltage forming electrostatic field in a reverse direction as that at the erasing, is characterized in that, after the rewriting of the information display is finished, a voltage forming electrostatic field in the same direction as that at erasing is applied.
    Type: Application
    Filed: December 12, 2008
    Publication date: November 4, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shuhei Yamada, Yoshikatsu Sakai, Shinya Tsuchida
  • Patent number: 7565774
    Abstract: A seismic isolation apparatus features damping characteristics equivalent to or better than prior art, without burdening the environment. In this seismic isolation apparatus, a cylindrical cavity portion is formed at the middle of an outer side laminated body, which has a form in which respective pluralities of resiliently deformable rubber rings and metal rings for maintaining rigidity are alternately laminated. A helically formed coil spring is disposed in this cavity portion so as to be snugly fitted. An inner side laminated body, which has a form in which respective pluralities of resiliently deformable rubber plates and metal plates for maintaining rigidity are alternately laminated, is disposed at an inner peripheral side of the coil spring.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: July 28, 2009
    Assignee: Bridgestone Corporation
    Inventors: Takahisa Shizuku, Masami Kikuchi, Katsuhiro Kobayashi, Yoshikatsu Sakai, Wataru Seki, Takashi Yokoi
  • Publication number: 20060137264
    Abstract: A seismic isolation apparatus features damping characteristics equivalent to or better than prior art, without burdening the environment. In this seismic isolation apparatus, a cylindrical cavity portion is formed at the middle of an outer side laminated body, which has a form in which respective pluralities of resiliently deformable rubber rings and metal rings for maintaining rigidity are alternately laminated. A helically formed coil spring is disposed in this cavity portion so as to be snugly fitted. An inner side laminated body, which has a form in which respective pluralities of resiliently deformable rubber plates and metal plates for maintaining rigidity are alternately laminated, is disposed at an inner peripheral side of the coil spring.
    Type: Application
    Filed: December 6, 2005
    Publication date: June 29, 2006
    Inventors: Takahisa Shizuku, Masami Kikuchi, Katsuhiro Kobayashi, Yoshikatsu Sakai, Wataru Seki, Takashi Yokoi
  • Patent number: 5654739
    Abstract: The controller executes a control calculation based on proportional and integration calculation parameters which are preset, and outputs a control output to a process, and comprises a display device for displaying panels having characters and figures thereon; a panel expanding key for instructing the display device to expand, or change, the panel to be displayed; a plurality of keys for setting control operations and various parameters; an operating panel generating unit for displaying as a bar graph; a process value and a control output value on an operating panel to be displayed on the display device; a trend graph panel generating unit for displaying the transition of the process value on a trend graph panel to be displayed on the display device; a tuning panel generating unit for displaying information to control the control parameter used in the control calculation on a tuning panel to be displayed on the display device; a display controlling unit for controlling the displays of the panels; and an operat
    Type: Grant
    Filed: November 2, 1995
    Date of Patent: August 5, 1997
    Assignee: Yokogawa Electric Corporation
    Inventors: Yoshikatsu Sakai, Kenji Yamaguchi, Masayuki Nakagawa, Masao Yokomori, Katsuhisa Tsuda, Yoshiyuki Kamata
  • Patent number: 5510809
    Abstract: The controller executes a control calculation based on proportional and integration calculation parameters which are preset, and outputs a control output to a process, and comprises a display device for displaying panels having characters and figures thereon; a panel expanding key for instructing the display device to expand, or change, the panel to be displayed; a plurality of keys for setting control operations and various parameters; an operating panel generating unit for displaying as a bar graph a process value and a control output value on an operating panel to be displayed on the display device; a trend graph panel generating unit for displaying the transition of the process value on a trend graph panel to be displayed on the display device; a tuning panel generating unit for displaying information to control the control parameter used in the control calculation on a tuning panel to be displayed on the display device; a display controlling unit for controlling the displays of the panels; and an operati
    Type: Grant
    Filed: March 22, 1994
    Date of Patent: April 23, 1996
    Assignee: Yokogawa Electric Corporation
    Inventors: Yoshikatsu Sakai, Kenji Yamaguchi, Masayuki Nakagawa, Masao Yokomori, Katsuhisa Tsuda, Yoshiyuki Kamata
  • Patent number: 4881160
    Abstract: A controller in which proportional integral (PI) arithmetic is effected on a deviation between a measurement or process signal from a process or controlled system and a control set value, and a resultant manipulation signal is outputted to the process. A waveform of the process signal or the deviation signal is observed. PI arithmetic parameters undergo self-tuning so that the measurement result becomes a preset response target.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: November 14, 1989
    Assignee: Yokogawa Electric Corporation
    Inventors: Yoshikatsu Sakai, Yasuo Nakai, Asao Miyabe, Takafumi Kawano