Patents by Inventor Tomoyuki Yanagisawa

Tomoyuki Yanagisawa 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: 11231298
    Abstract: A sensor includes a generator configured to generate a predetermined detection target, a detector configured to detect the detection target generated by the generator, and a substrate provided with the generator and the detector. The substrate includes a first portion provided with the generator, a second portion provided with the detector, a bent portion that is bent between the first portion and the second portion such that the generator and the detector face each other, and a ground pattern provided in a portion including the first portion, the second portion, and the bent portion. In the ground pattern, a ground pattern of the bent portion is narrower than a ground pattern of the first portion and a ground pattern of the second portion.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: January 25, 2022
    Assignee: NSK LTD.
    Inventors: Tomoyuki Yanagisawa, Minoru Kubokawa, Toshiaki Oguchi, Hideki Furukawa, Yasuhiro Kawai
  • Publication number: 20220021438
    Abstract: A wireless communication system includes a wireless sensor provided inside a metal housing; a receiver provided outside the metal housing to receive radio waves from the wireless sensor; and a passive repeater provided between the inside and the outside of the metal housing. The passive repeater includes a receiving antenna provided inside the metal housing and a transmitting antenna provided outside the metal housing. The receiving antenna of the passive repeater and the transmitting antenna of the passive repeater are electrically connected through a hole formed in the metal housing.
    Type: Application
    Filed: September 29, 2021
    Publication date: January 20, 2022
    Applicant: NSK LTD.
    Inventors: Keisuke Manabe, Toshihiko Okamura, Tomoyuki Yanagisawa
  • Publication number: 20210180996
    Abstract: A sensor includes a generator configured to generate a predetermined detection target, a detector configured to detect the detection target generated by the generator, and a substrate provided with the generator and the detector. The substrate includes a first portion provided with the generator, a second portion provided with the detector, a bent portion that is bent between the first portion and the second portion such that the generator and the detector face each other, and a ground pattern provided in a portion including the first portion, the second portion, and the bent portion. In the ground pattern, a ground pattern of the bent portion is narrower than a ground pattern of the first portion and a ground pattern of the second portion.
    Type: Application
    Filed: February 25, 2016
    Publication date: June 17, 2021
    Applicant: NSK LTD.
    Inventors: Tomoyuki YANAGISAWA, Minoru KUBOKAWA, Toshiaki OGUCHI, Hideki FURUKAWA, Yasuhiro KAWAI
  • Patent number: 10670430
    Abstract: A sensor configured to detect displacement of a rotation angle of a shaft due to a rotation or a turn of the shaft, the sensor includes: a bearing rotatably supporting the shaft; and a housing including a bearing hole to which the bearing is fixed. The shaft and an inner circumferential surface of the bearing are fixed to each other by an adhesive agent, and an outer circumferential surface of the bearing and an inner circumferential surface of the bearing hole of the housing are fixed to each other by an adhesive agent.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 2, 2020
    Assignee: NSK LTD.
    Inventors: Tomoyuki Yanagisawa, Minoru Kubokawa, Toshiaki Oguchi, Hideki Furukawa, Yasuhiro Kawai
  • Patent number: 10458817
    Abstract: A sensor manufacturing method is a method for manufacturing a sensor including a generator that generates a predetermined detection target, a detector that detects the detection target generated by the generator, and a motion body that performs motion in the area in between the generator and the detector. In the method, the generator and the detector are positioned opposite to each other by either curving or bending a substrate including a first portion having the generator installed thereon and a second portion having the detector installed thereon that are formed in an integrated manner, and the substrate and the motion body are made to perform relative movement in such a way that the motion body enters the area in between the generator and the detector.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: October 29, 2019
    Assignee: NSK LTD.
    Inventors: Tomoyuki Yanagisawa, Minoru Kubokawa, Toshiaki Oguchi, Hideki Furukawa, Yasuhiro Kawai
  • Patent number: 10378932
    Abstract: A sensor including a generating unit; a detecting unit; a substrate; a member that exerts influence on an object to be detected; and a housing that includes a first housing that operably supports the member and a second housing to which a part of the substrate is fixed. The substrate includes a first portion provided with the generating unit and a second portion provided with the detecting unit that are integrated, and has a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. One of the first portion and the second portion is fixed to the second housing. A surface of the other of the first portion and the second portion adheres to the first housing.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: August 13, 2019
    Assignee: NSK LTD.
    Inventors: Yasuhiro Kawai, Toshiaki Oguchi, Hideki Furukawa, Tomoyuki Yanagisawa, Minoru Kubokawa
  • Patent number: 10337892
    Abstract: A sensor including: a generating unit; a detecting unit that detects the object to be detected generated by the generating unit; and a substrate at which the generating unit and the detecting unit are provided. The substrate is a flexible substrate that includes a first portion provided with the generating unit and a second portion provided with the detecting unit, the first portion and the second portion being integrated, and that takes a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. A plate support member is attached to a back-side surface of at least one of the surface of the first portion and the surface of the second portion.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: July 2, 2019
    Assignee: NSK LTD.
    Inventors: Yasuhiro Kawai, Toshiaki Oguchi, Hideki Furukawa, Tomoyuki Yanagisawa, Minoru Kubokawa
  • Publication number: 20190162563
    Abstract: A sensor configured to detect displacement of a rotation angle of a shaft due to a rotation or a turn of the shaft, the sensor includes: a bearing rotatably supporting the shaft; and a housing including a bearing hole to which the bearing is fixed. The shaft and an inner circumferential surface of the bearing are fixed to each other by an adhesive agent, and an outer circumferential surface of the bearing and an inner circumferential surface of the bearing hole of the housing are fixed to each other by an adhesive agent.
    Type: Application
    Filed: February 25, 2016
    Publication date: May 30, 2019
    Applicant: NSK LTD.
    Inventors: Tomoyuki YANAGISAWA, Minoru KUBOKAWA, Toshiaki OGUCHI, Hideki FURUKAWA, Yasuhiro KAWAI
  • Patent number: 10260991
    Abstract: An abnormality diagnosis system includes a bearing having a plurality of components, a plurality of sensors disposed at different positions of the component and configured to detect surrounding signals, and an abnormality diagnosis device configured to diagnose abnormalities of the rolling bearing and a device disposed around the rolling bearing, based on signals output from the plurality of sensors.
    Type: Grant
    Filed: February 17, 2016
    Date of Patent: April 16, 2019
    Assignee: NSK LTD.
    Inventors: Tomoyuki Yanagisawa, Tomoyuki Aizawa
  • Publication number: 20190078911
    Abstract: A sensor manufacturing method is a method for manufacturing a sensor including a generator that generates a predetermined detection target, a detector that detects the detection target generated by the generator, and a motion body that performs motion in the area in between the generator and the detector. In the method, the generator and the detector are positioned opposite to each other by either curving or bending a substrate including a first portion having the generator installed thereon and a second portion having the detector installed thereon that are formed in an integrated manner, and the substrate and the motion body are made to perform relative movement in such a way that the motion body enters the area in between the generator and the detector.
    Type: Application
    Filed: February 25, 2016
    Publication date: March 14, 2019
    Applicant: NSK LTD.
    Inventors: Tomoyuki YANAGISAWA, Minoru KUBOKAWA, Toshiaki OGUCHI, Hideki FURUKAWA, Yasuhiro KAWAI
  • Patent number: 10139252
    Abstract: An optical sensor including a light-emitting element, four light-receiving elements facing the light-emitting element, and a substrate at which the light-emitting element and the light-receiving elements are provided. The substrate includes a first portion at which the light-emitting element is provided and a second portion at which the light-receiving elements are provided, the first portion and the second portion being integrated. Respective distances from the four light-receiving elements to one point on a predetermined plane are equal, four line segments that connect the one point and centers of respective light-receiving regions of the four light-receiving elements form right angles with each other, and a normal line of the predetermined plane that passes through the one point passes through an emission point of the light of the light-emitting element or a center of an emission surface of the light of the light-emitting element.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: November 27, 2018
    Assignee: NSK LTD.
    Inventors: Yasuhiro Kawai, Toshiaki Oguchi, Hideki Furukawa, Tomoyuki Yanagisawa, Minoru Kubokawa
  • Publication number: 20180038413
    Abstract: This abnormality diagnosis system is provided with: a bearing comprising a plurality of constituent members; a sensor that is installed on a constituent member and detects signals from the surroundings; and an abnormality diagnosis device that diagnoses, on the basis of signals output from the sensor, abnormalities in the rolling bearing or in a device located at the periphery of the rolling bearing.
    Type: Application
    Filed: April 28, 2016
    Publication date: February 8, 2018
    Applicant: NSK LTD.
    Inventors: Tomoyuki AIZAWA, Tomoyuki YANAGISAWA
  • Publication number: 20180038772
    Abstract: An abnormality diagnosis system includes a bearing having a plurality of components, a plurality of sensors disposed at different positions of the component and configured to detect surrounding signals, and an abnormality diagnosis device configured to diagnose abnormalities of the rolling bearing and a device disposed around the rolling bearing, based on signals output from the plurality of sensors.
    Type: Application
    Filed: February 17, 2016
    Publication date: February 8, 2018
    Applicant: NSK LTD.
    Inventors: Tomoyuki YANAGISAWA, Tomoyuki AIZAWA
  • Patent number: 9833852
    Abstract: Provided is a wire electrical discharge machining device which has a tension controller for maintaining the tension of a traveling wire electrode at a tension. The tension controller includes: an allowed tension calculation module for determining an allowed tension that is less than a wire breaking tension at which the wire electrode breaks; and a set tension generation module for generating the set tension in accordance with the allowed tension. When the set tension is greater than the allowed tension, the set tension generation module reduces the set tension. When the set tension is less than the allowed tension, the set tension generation module increases the set tension in such a way that the set tension does not exceed the allowed tension.
    Type: Grant
    Filed: October 19, 2011
    Date of Patent: December 5, 2017
    Assignee: SODICK CO., LTD.
    Inventors: Kuniharu Yamada, Masaki Kougo, Tomoyuki Yanagisawa
  • Patent number: 9770773
    Abstract: The present invention relates to an electric discharge machining device. The electric discharge machining device includes: a first switch provided between the positive pole of a power supply and a work piece; a second switch provided between the negative pole of the power supply and the work piece; a third switch provided between the negative pole of the power supply and a tool electrode; a fourth switch provided between the positive pole of the power supply and the tool electrode; and a pulse generating device. In order to supply current pulses with a straight polarity, the pulse generating device repeatedly switches on and off either the first or third switch while the other switch is on. In order to supply current pulses with a reverse polarity, the pulse generating device repeatedly switches on and off either the second or fourth switch while the other switch is on.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: September 26, 2017
    Assignee: SODICK CO., LTD.
    Inventors: Tomoyuki Yanagisawa, Tatsuo Toyonaga
  • Publication number: 20170254678
    Abstract: A sensor including: a generating unit; a detecting unit that detects the object to be detected generated by the generating unit; and a substrate at which the generating unit and the detecting unit are provided. The substrate is a flexible substrate that includes a first portion provided with the generating unit and a second portion provided with the detecting unit, the first portion and the second portion being integrated, and that takes a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. A plate support member is attached to a back-side surface of at least one of the surface of the first portion and the surface of the second portion.
    Type: Application
    Filed: August 5, 2015
    Publication date: September 7, 2017
    Applicant: NSK LTD.
    Inventors: Yasuhiro KAWAI, Toshiaki OGUCHI, Hideki FURUKAWA, Tomoyuki YANAGISAWA, Minoru KUBOKAWA
  • Patent number: 9744607
    Abstract: A power supply system for wire electric discharge machining includes a first power supply circuit and a second power supply circuit. The first power supply circuit applies, to the machining gap, a voltage that induces a discharge. The second power supply circuit, which includes a low inductance line, supplies a current, which contributes to the machining, to the machining gap,. A blocking diode is series-connected between the low inductance line and the machining gap. A container, which has a contact surface contacting with the blocking diode and contains a cooling liquid, is provided.
    Type: Grant
    Filed: July 21, 2011
    Date of Patent: August 29, 2017
    Assignee: SODICK CO., LTD.
    Inventors: Kuniharu Yamada, Tomoyuki Yanagisawa
  • Publication number: 20170219389
    Abstract: A sensor including a generating unit; a detecting unit; a substrate; a member that exerts influence on an object to be detected; and a housing that includes a first housing that operably supports the member and a second housing to which a part of the substrate is fixed. The substrate includes a first portion provided with the generating unit and a second portion provided with the detecting unit that are integrated, and has a curved shape or a bent shape in which a surface of the first portion at which the generating unit is provided and a surface of the second portion at which the detecting unit is provided face each other. One of the first portion and the second portion is fixed to the second housing. A surface of the other of the first portion and the second portion adheres to the first housing.
    Type: Application
    Filed: August 5, 2015
    Publication date: August 3, 2017
    Applicant: NSK LTD.
    Inventors: Yasuhiro KAWAI, Toshiaki OGUCHI, Hideki FURUKAWA, Tomoyuki YANAGISAWA, Minoru KUBOKAWA
  • Publication number: 20170219388
    Abstract: An optical sensor including a light-emitting element, four light-receiving elements facing the light-emitting element, and a substrate at which the light-emitting element and the light-receiving elements are provided. The substrate includes a first portion at which the light-emitting element is provided and a second portion at which the light-receiving elements are provided, the first portion and the second portion being integrated. Respective distances from the four light-receiving elements to one point on a predetermined plane are equal, four line segments that connect the one point and centers of respective light-receiving regions of the four light-receiving elements form right angles with each other, and a normal line of the predetermined plane that passes through the one point passes through an emission point of the light of the light-emitting element or a center of an emission surface of the light of the light-emitting element.
    Type: Application
    Filed: August 5, 2015
    Publication date: August 3, 2017
    Applicant: NSK LTD.
    Inventors: Yasuhiro KAWAI, Toshiaki OGUCHI, Hideki FURUKAWA, Tomoyuki YANAGISAWA, Minoru KUBOKAWA
  • Publication number: 20150217391
    Abstract: The present invention relates to an electric discharge machining device. The electric discharge machining device includes: a first switch provided between the positive pole of a power supply and a work piece; a second switch provided between the negative pole of the power supply and the work piece; a third switch provided between the negative pole of the power supply and a tool electrode; a fourth switch provided between the positive pole of the power supply and the tool electrode; and a pulse generating device. In order to supply current pulses with a straight polarity, the pulse generating device repeatedly switches on and off either the first or third switch while the other switch is on. In order to supply current pulses with a reverse polarity, the pulse generating device repeatedly switches on and off either the second or fourth switch while the other switch is on.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 6, 2015
    Inventors: Tomoyuki Yanagisawa, Tatsuo Toyonaga