Patents by Inventor Takashi Araki
Takashi Araki 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: 11344793Abstract: To achieve a pseudo experience of launching a shuriken with improved presence feeling. A game device includes: a housing; a light source; an optical mechanism; a movement detection sensor; and a light source driver. The housing is configured to be held on a first palm of an operator. The housing includes a front protruding portion which protrudes forward and an upper surface which faces upward. The light source is housed in the housing and configured to emit light. The optical mechanism is housed in the housing and projects the light from the light source forward from a tip of the front protruding portion. The movement detection sensor detects forward movement of a second palm of the operator on the upper surface, wherein the second palm is different from the first palm. The light source driver drives the light source based on movement detection by the movement detection sensor.Type: GrantFiled: November 21, 2019Date of Patent: May 31, 2022Inventor: Takashi Araki
-
Publication number: 20220082044Abstract: An exhaust gas sensor that detects a specific component included in an exhaust gas includes a sensor element including a detector, an element cover that accommodates the sensor element and has a gas ventilation hole, a heater that heats the sensor element, a heater control section, and an installation state diagnosis section that diagnoses a state of an element cover based on a sensor temperature detected by a sensor temperature detection section. The installation state diagnosis section includes a temperature variation amount calculation section that calculates a sensor temperature variation amount, a temperature variation amount integration section that sums the sensor temperature variation amounts, and an abnormality determination section that determines presence or absence of an abnormal installation based on a comparison result between variation amount integration information of the sensor temperature and a diagnosis threshold value.Type: ApplicationFiled: November 26, 2021Publication date: March 17, 2022Inventors: Masato MINATO, Masato KATSUNO, Takashi ARAKI
-
Publication number: 20220016517Abstract: To achieve a pseudo experience of launching a shuriken with improved presence feeling. A game device includes: a housing; a light source; an optical mechanism; a movement detection sensor; and a light source driver. The housing is configured to be held on a first palm of an operator. The housing includes a front protruding portion which protrudes forward and an upper surface which faces upward. The light source is housed in the housing and configured to emit light. The optical mechanism is housed in the housing and projects the light from the light source forward from a tip of the front protruding portion. The movement detection sensor detects forward movement of a second palm of the operator on the upper surface, wherein the second palm is different from the first palm. The light source driver drives the light source based on movement detection by the movement detection sensor.Type: ApplicationFiled: November 21, 2019Publication date: January 20, 2022Inventor: Takashi ARAKI
-
Patent number: 11209388Abstract: The present invention provides a gas sensor capable of suppressing a variation of a sensor output by a sensor cell to be small. A sensor element of a gas sensor comprises a first solid electrolyte body and a second solid electrolyte body having oxygen ion conductivity, a measured gas chamber into which the measured gas is introduced, a first reference gas chamber and a second reference gas chamber into which reference gas is introduced, a first pump cell, a second pump cell, a sensor cell, and a heater. A value obtained by dividing a first average cross-sectional area of the first reference gas chamber by the first length is larger than the value obtained by dividing the second average cross-sectional area of the second reference gas chamber by the second length.Type: GrantFiled: May 15, 2017Date of Patent: December 28, 2021Assignee: DENSO CORPORATIONInventors: Keisuke Mizutani, Keigo Mizutani, Shota Hagino, Mitsunobu Nakato, Takashi Araki
-
Patent number: 11187166Abstract: An internal combustion engine (1) is provided with a turbocharger (2), and is configured to be switchable between a stoichiometric combustion mode having a theoretical air-fuel ratio as a target air-fuel ratio and a lean combustion mode having a lean air-fuel ratio as a target air-fuel ratio. An air bypass valve (20) is provided in an air bypass passage (19) communicating a collector (11a) on the downstream of a throttle valve (12) with the upstream side of a compressor (2b) in an intake passage (11). At the time of the shifting from the lean combustion mode to the stoichiometric mode, the throttle valve (12) is closed and the air bypass valve (20) is temporarily opened to decrease the pressure inside the collector (11a) quickly.Type: GrantFiled: December 22, 2017Date of Patent: November 30, 2021Assignee: NISSAN MOTOR CO., LTD.Inventors: Takashi Araki, Takayuki Hamamoto, Yoshiyasu Kimura
-
Publication number: 20210310397Abstract: A particulate matter detecting apparatus (S) comprises a sensor body (S1) which has a sensor device (1) which is retained in a housing (H) secured to an exhaust pipe (101) of an internal combustion engine (ENG) and detects particulate matter contained in exhaust gas, a sensor temperature determining unit (2) which works to determine a temperature of the sensor device, and a mounted condition diagnosis unit (3) which diagnoses a mounted condition where the sensor body is mounted in the exhaust pipe. The mounted condition diagnosis unit includes a diagnosis threshold setting unit (31) and a mount error determining unit (32). The diagnosis threshold setting unit determines a diagnosis threshold (Tth), as used in a diagnosis of the mounted condition, as a function of an operating condition of the internal combustion engine to have a temperature value lower than a temperature of the sensor device when the sensor body is normally mounted in the exhaust pipe.Type: ApplicationFiled: June 17, 2021Publication date: October 7, 2021Inventors: Takashi ARAKI, Masato KATSUNO
-
Publication number: 20210255137Abstract: A gas sensor includes a sensor element including a solid electrolyte, a gas chamber, a pump electrode, a sensor electrode, and a reference electrode. The pump electrode and sensor electrode are provided in the solid electrolyte in a state in which the pump electrode and the sensor electrode are housed in the gas chamber. The reference electrode is provided in the solid electrolyte. The pump electrode and the sensor electrode contain Au. Au content in a surface layer is equal to or greater than 1 mass % and higher than Au content in a reference layer. The surface layer is an area from a surface of the sensor electrode to a depth of 0.3 nanometers. The reference layer is an area extending to a depth of 2 or more to 3 or less nanometers from the surface of the sensor electrode.Type: ApplicationFiled: May 6, 2021Publication date: August 19, 2021Inventors: Tatsuya YOSHIKAWA, Yusuke TODO, Mitsunobu NAKATO, Takashi ARAKI, Yuji KAWASAKI
-
Publication number: 20210239026Abstract: An exhaust gas sensor includes an element cover, a heater, a heater control section, and a cover state diagnosing section. The element cover accommodates a sensor element including a detection section and includes one or more gas flow holes. The heater heats the sensor element. The heater control section controls how the heater heats the sensor element. The cover state diagnosing section diagnoses a state of the element cover using heater information obtained when the heater is operated by the heater control section. The cover state diagnosing section includes a diagnosability determining section, which determines whether the state of the element cover is diagnosable based on an accuracy of the heater information obtained from an operating state of the heater and a surrounding environmental state of the element cover.Type: ApplicationFiled: April 22, 2021Publication date: August 5, 2021Inventors: Takashi ARAKI, Masato KATSUNO
-
Patent number: 11022535Abstract: A PM detection sensor has a sensor body part made of an insulating member and a positive electrode and a negative electrode. The positive electrode is composed of a plurality of positive electrode segments. The negative electrode is composed of a plurality of negative electrode segments. A deposition surface is formed on the sensor body part. These electrode segments are formed on the deposition surface to be exposed to exhaust gas introduced into the inside of the PM detection sensor. The positive electrode segments and the negative electrode segments are arranged adjacently to and separately from each other, on the deposition surface, along a short width direction and a long width direction of each electrode segment. The short width direction and the long width direction are orthogonal to a normal direction of the deposition surface.Type: GrantFiled: July 9, 2018Date of Patent: June 1, 2021Assignee: DENSO CORPORATIONInventors: Go Miyagawa, Takashi Araki
-
Patent number: 11009481Abstract: Provided is a gas sensor achieving improvement in detection accuracy for a specific gas component and responsiveness for detecting the specific gas component. A guide body is provided at a base end section of a first inner circulation hole in an inner cover of the gas sensor. The base end section is located between a base end position P1 2 mm away from a tip end of a sensor element in an axial direction L towards a base end side L1 and a tip end position P2 2 mm away from the tip end towards a tip end side L2. The tip end is on the base end side L1 relative to an imaginary line K passing through a base end and a tip end on a surface on the tip end side of the guide body.Type: GrantFiled: April 7, 2017Date of Patent: May 18, 2021Assignee: DENSO CORPORATIONInventors: Takashi Araki, Mitsunobu Nakato
-
Patent number: 10996192Abstract: A gas sensor is equipped with a sensor element which detects a specific gas concentration within a gas that is being measured, a housing having the sensor element disposed in the interior thereof and retained therein, and an element cover disposed at an axial-direction tip end of the housing. The tip of the sensor element is provided with a gas introduction part. The element cover has an inner cover and an outer cover, with a space opened between the inner cover and outer cover. Inner side flow holes provided in the inner cover are disposed closer to an axial-direction base end than is a tapered-diameter step part. The distance between the tip of the sensor element and the inner-side flow holes of the inner cover, with respect to an axial direction, is less than or equal to 1.6 mm.Type: GrantFiled: September 9, 2016Date of Patent: May 4, 2021Assignee: DENSO CORPORATIONInventors: Takashi Araki, Takehito Kimata, Mitsunobu Nakatou
-
Publication number: 20210071601Abstract: An internal combustion engine (1) is provided with a turbocharger (2), and is configured to be switchable between a stoichiometric combustion mode having a theoretical air-fuel ratio as a target air-fuel ratio and a lean combustion mode having a lean air-fuel ratio as a target air-fuel ratio. An air bypass valve (20) is provided in an air bypass passage (19) communicating a collector (11a) on the downstream of a throttle valve (12) with the upstream side of a compressor (2b) in an intake passage (11). At the time of the shifting from the lean combustion mode to the stoichiometric mode, the throttle valve (12) is closed and the air bypass valve (20) is temporarily opened to decrease the pressure inside the collector (11a) quickly.Type: ApplicationFiled: December 22, 2017Publication date: March 11, 2021Applicant: NISSAN MOTOR CO., LTD.Inventors: Takashi ARAKI, Takayuki HAMAMOTO, Yoshiyasu KIMURA
-
Patent number: 10921283Abstract: A gas sensor includes a solid electrolyte, a gas chamber, a reference gas chamber, a pump cell, a monitor cell, and a sensor cell. The gas chamber has a spatial width W0 constant in a width direction W orthogonal to the direction of flow of a gas in a position where the pump electrode, the monitor electrode, and the sensor electrode are provided on the solid electrolyte. An amount of shift ?X1 of a central position O2 of a gap S in the width direction W between the monitor electrode and the sensor electrode from a central position O1 in the width direction of the pump electrode has relationship of ?X1?¼ W1 where the pump electrode has a width W1. In addition, positions ?Y1 of a of a side surface of the monitor electrode and of a side surface of the sensor electrode from the central position O1 in the width direction W of the pump electrode have relationship of ?Y1?½ W1.Type: GrantFiled: December 16, 2014Date of Patent: February 16, 2021Assignee: DENSO CORPORATIONInventors: Mitsunobu Nakatou, Keigo Mizutani, Takashi Araki, Yuusuke Toudou
-
Patent number: 10895553Abstract: Provided is a gas sensor improving accuracy of detection of specific gas in measurement gas, while maintaining high responsiveness in detection of the specific gas. A sensor element of a gas sensor includes a first solid electrolyte and second solid electrolyte having oxygen ionic conductivity, a measurement gas chamber into which measurement gas is introduced, a first reference gas chamber and second reference gas chamber into which reference gas is introduced, a first pump cell, a second pump cell, a sensor cell, and a heater. The sensor cell detects a specific gas component in the measurement gas having an oxygen concentration adjusted by the pump cells. The heater is located opposite to a second principal surface of the second solid electrolyte on which the sensor cell is formed.Type: GrantFiled: April 19, 2017Date of Patent: January 19, 2021Assignee: DENSO CORPORATIONInventors: Keisuke Mizutani, Keigo Mizutani, Mitsunobu Nakato, Takashi Araki
-
Patent number: 10890552Abstract: A gas sensor includes a pump cell unit that regulates the oxygen concentration of a measured gas using a pump electrode, a monitor cell unit that detects the residual oxygen concentration of the measured gas using a monitor electrode, and a sensor cell unit that detects the concentration of a specific gas component in the measured gas using a sensor electrode. Between a pump electrode lead part and the sensor electrode, there is arranged the monitor electrode. Between an upstream portion of the pump electrode lead part and a monitor electrode lead part, there is provided an interval w1 of 0.5 mm or more.Type: GrantFiled: December 7, 2016Date of Patent: January 12, 2021Assignee: DENSO CORPORATIONInventors: Keigo Mizutani, Keisuke Mizutani, Mitsunobu Nakato, Takashi Araki
-
Patent number: 10871117Abstract: After an engine is started, an ECU performs first regeneration processing of a PM sensor through heating by a heater and, after the first regeneration processing, applies a voltage continuously to detection electrodes for a predetermined voltage application period. The ECU causes PM to adhere to an insulating substrate due to the voltage application and, at a time point after the predetermined time period has elapsed, determines the amount of PM that is adhering to the insulating substrate. When a predetermined condition is satisfied outside the voltage application period, the ECU determines whether the amount of adhering PM on the insulating substrate is equal to or greater than an excess determination threshold value. If the amount of adhering PM is determined to be equal to or greater than the excess determination threshold value, the ECU performs second regeneration processing of the PM sensor, through heating by the heater.Type: GrantFiled: January 18, 2017Date of Patent: December 22, 2020Assignee: DENSO CORPORATIONInventors: Masahiro Yamamoto, Masayuki Tamura, Takashi Araki, Go Miyagawa, Manabu Yoshidome, Masato Katsuno, Toshihiro Sakawa
-
Patent number: 10837938Abstract: A gas sensor device is equipped with a diffusion controlling portion, a pump cell, and a sensor cell. The diffusion controlling portion is formed to face a major surface of a solid electrolyte body and works to control a rate of diffusion of a measurement gas entering a measurement gas chamber. The pump cell has a pump electrode which contains gold and is formed on the major surface. The pump electrode is located downstream of the diffusion controlling portion in a gas flow direction. The pump cell works to regulate a concentration of oxygen in the measurement gas upon application of voltage to the pump electrode. The sensor cell has a sensor electrode formed on the major surface downstream of the diffusion controlling portion in the gas flow direction. The sensor cell works to measure a concentration of nitrogen oxide contained in the measurement gas upon application of voltage to the sensor electrode. The pump electrode is disposed upstream of the sensor electrode at a distance of 0.Type: GrantFiled: December 21, 2017Date of Patent: November 17, 2020Assignee: DENSO CORPORATIONInventors: Takashi Araki, Yusuke Todo
-
Patent number: 10794811Abstract: An apparatus which detects particulate matter is provided. This apparatus estimates a volume of water inside an exhaust passage using estimation sections. When an estimated volume of water is larger than a water drainage threshold, an element portion is heated using a heater by the first temperature range controller, in a temperature range which resists water-induced cracking independent of a volume of water droplets. If the estimated volume of water is less than a water drainage threshold, the water drainage determination section determines that the water drainage of the exhaust passage is completed. Additionally, if it is estimated that the water drainage is completed, the element portion is heated by a second temperature controller at temperature lower than a starting temperature of combustion of particulate matter and in order to repel water adhered onto the element portion in a water-repellent temperature range for a predetermined period.Type: GrantFiled: October 20, 2016Date of Patent: October 6, 2020Assignee: DENSO CORPORATIONInventors: Go Miyagawa, Masayuki Tamura, Masahiro Yamamoto, Takashi Araki, Toshihiro Sakawa, Masato Katsuno, Manabu Yoshidome
-
Patent number: 10788448Abstract: A gas sensor which can improve an accuracy in detecting a specific gas component by properly correcting for the influence of residual oxygen is provided. The gas sensor includes a solid electrolyte plate, a measured gas chamber into which a measured gas flows, a pump cell which adjusts an oxygen concentration of the measured gas using a pump electrode, a monitor cell which detects a residual oxygen concentration of the measured gas using a monitor electrode, and a sensor cell which detects a specific gas component concentration of the measured gas using a sensor electrode. The maximum thickness of the sensor electrode is greater than the maximum thickness of the monitor electrode, and the difference between the maximum thickness of the sensor electrode and the maximum thickness of the monitor electrode is between 4 ?m and 30 ?m, inclusive.Type: GrantFiled: November 3, 2016Date of Patent: September 29, 2020Assignee: DENSO CORPORATIONInventors: Keigo Mizutani, Keisuke Mizutani, Mitsunobu Nakato, Takashi Araki
-
Publication number: 20200292422Abstract: A sensor device includes an element cover at the tip end of a housing, retaining a sensor element. An outer cover is provided with outer side holes, with the tip position of the outer side holes being farther toward the tip end than is the tip position of an inner cover, and a first flow passage having a gas flow direction that is at right angles to the axial direction is formed at the inner side of the outer cover. An inner side hole in the inner cover is open to a second flow passage provided between the side surfaces of the inner cover and the outer cover, and a detection surface of the sensor element is located on an extension line in an extension direction of a guide member which extends obliquely into the interior of the inner cover from the tip-position edge of the inner side hole.Type: ApplicationFiled: May 28, 2020Publication date: September 17, 2020Inventors: Yuto TAMEI, Takashi ARAKI, Hirofumi NODA, Takehito KIMATA, Koichi YOSHIDA