Patents by Inventor Seiji Kasahara
Seiji Kasahara 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).
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Patent number: 11125323Abstract: Selection solenoid valve (75) controls engagement/disengagement of travel clutch (31, 32) in synchronization with a selecting operation of selector lever (90) that selects a range position of belt-type continuously variable transmission (CVT). Selection solenoid valve abnormality diagnosing unit (8a) is configured to, when performing a selecting operation from no-drive range to drive range, if a time required for travel clutch (31, 32) to be judged to be engaged from a start of selection of the drive range is less than a predetermined time, judge selection solenoid valve (75) to be a maximum hydraulic pressure side abnormality. When performing the selecting operation of drive range?no-drive range?drive range, if a selecting operation speed condition indicating that a no-drive range selection time is shorter than a setting time (Tth) is satisfied, execution of abnormality diagnosis of selection solenoid valve (75) is not permitted. With this configuration, misjudgment is prevented.Type: GrantFiled: August 28, 2018Date of Patent: September 21, 2021Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Ken Son, Seiji Kasahara
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Publication number: 20200182352Abstract: Selection solenoid valve (75) controls engagement/disengagement of travel clutch (31, 32) in synchronization with a selecting operation of selector lever (90) that selects a range position of belt-type continuously variable transmission (CVT). Selection solenoid valve abnormality diagnosing unit (Sa) is configured to, when performing a selecting operation from no-drive range to drive range, if a time required for travel clutch (31, 32) to be judged to be engaged from a start of selection of the drive range is less than a predetermined time, judge selection solenoid valve (75) to be a maximum hydraulic pressure side abnormality. When performing the selecting operation of drive range?no-drive range?drive range, if a selecting operation speed condition indicating that a no-drive range selection time is shorter than a setting time (Tth) is satisfied, execution of abnormality diagnosis of selection solenoid valve (75) is not permitted. With this configuration, misjudgment is prevented.Type: ApplicationFiled: August 28, 2018Publication date: June 11, 2020Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Ken SON, Seiji KASAHARA
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Patent number: 10612651Abstract: In a vehicle equipped with a torque converter 4 having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. When the lock-up clutch (3) experiences a transition to an engaged state during travel, a meet-point learning control unit (12c) calculates an LU transmission torque estimate on the basis of the difference between the engine torque (engine torque signal value Te) and the torque converter transmission torque (?·Ne2). Excess clutch capacity is detected when the LU transmission torque estimate is greater than an excess capacity determination transmission torque threshold within a prescribed amount of time after an initial pressure (P_n) based on the learning value (L_n) is instructed. When excess clutch capacity is detected, a learning value correction that reduces the learning value (L_n) is carried out.Type: GrantFiled: August 31, 2016Date of Patent: April 7, 2020Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu Araki, Hideshi Wakayama, Kouji Saitou, Seiji Kasahara, Tetsuya Izumi
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Patent number: 10527161Abstract: A control device that controls an automatic transmission is provided, in which device the automatic transmission includes a variator disposed in a power transmission path between a driving source and a driving wheel of a vehicle, and a friction engaging element disposed between the variator and the driving wheel, in a manner capable of transmitting a power disconnectably via the power transmission path. The control device increases a speed ratio of the variator toward a predetermined target speed ratio with disengaging the friction engaging element during a vehicle stop of the vehicle, and executes a learning regarding a hydraulic control of the friction engaging element when the friction engaging element is disengaged during the vehicle stop. The control device decreases the target speed ratio at a time of learning when the learning is executed during the vehicle stop, compared to a time of vehicle stop other than the time of learning.Type: GrantFiled: September 7, 2016Date of Patent: January 7, 2020Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Yoshinobu Kawamoto, Seiji Kasahara, Haibin Ma
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Patent number: 10480648Abstract: In a vehicle equipped with a torque converter (4) having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. After acquiring the current learning detection value (M_n), a meet-point learning control unit (12c) calculates the current detection error (E_n) on the basis of the difference between the current learning detection value (M_n) and the previous learning value (L_(n?1)) that is stored. When the current and previous detection errors (E_n) and (E_n?1) have the same plus/minus sign, the current learning value correction amount is set to a larger value if the absolute value |(E_n?1)| of the previous detection error (E_n?1) is large than if the absolute value |(E_n?1)| is small. The sum of the previous learning value (L_(n?1)) and the current learning value correction amount is set as the present learning value (L_n).Type: GrantFiled: August 31, 2016Date of Patent: November 19, 2019Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu Araki, Seiji Kasahara, Hideshi Wakayama, Hiroyasu Tanaka
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Patent number: 10371256Abstract: In a vehicle on which a torque converter having a lock-up clutch is mounted between an engine and a transmission, a meet point learning controller is provided to perform learning control for obtaining a learning value based on information on a meet point at which the lock-up clutch starts torque transmission. The meet point learning controller estimates a LU transmission torque based on a difference between an engine torque signal value and a torque converter transmission torque when the lock-up clutch moves from a non-engaged state to an engaged state during traveling of the vehicle, and uses, as the meet point information, a meet point detection pressure at a time when the LU transmission torque estimated value is determined to have entered an upward trend.Type: GrantFiled: August 12, 2016Date of Patent: August 6, 2019Assignees: JATCO LTD, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu Araki, Seiji Kasahara, Hideshi Wakayama, Kouji Saitou, Hiroyasu Tanaka
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Publication number: 20180355969Abstract: A control device that controls an automatic transmission is provided, in which device the automatic transmission includes a variator disposed in a power transmission path between a driving source and a driving wheel of a vehicle, and a friction engaging element disposed between the variator and the driving wheel, in a manner capable of transmitting a power disconnectably via the power transmission path. The control device increases a speed ratio of the variator toward a predetermined target speed ratio with disengaging the friction engaging element during a vehicle stop of the vehicle, and executes a learning regarding a hydraulic control of the friction engaging element when the friction engaging element is disengaged during the vehicle stop. The control device decreases the target speed ratio at a time of learning when the learning is executed during the vehicle stop, compared to a time of vehicle stop other than the time of learning.Type: ApplicationFiled: September 7, 2016Publication date: December 13, 2018Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Yoshinobu KAWAMOTO, Seiji KASAHARA, Haibin MA
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Publication number: 20180245689Abstract: In a vehicle equipped with a torque converter (4) having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. After acquiring the current learning detection value (M_n), a meet-point learning control unit (12c) calculates the current detection error (E_n) on the basis of the difference between the current learning detection value (M_n) and the previous learning value (L_(n?1)) that is stored. When the current and previous detection errors (E_n) and (E_n?1) have the same plus/minus sign, the current learning value correction amount is set to a larger value if the absolute value |(E_n?1)| of the previous detection error (E_n?1) is large than if the absolute value |(E_n?1)| is small. The sum of the previous learning value (L_(n?1)) and the current learning value correction amount is set as the present learning value (L_n).Type: ApplicationFiled: August 31, 2016Publication date: August 30, 2018Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu ARAKI, Seiji KASAHARA, Hideshi WAKAYAMA, Hiroyasu TANAKA
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Publication number: 20180245688Abstract: In a vehicle on which a torque converter having a lock-up clutch is mounted between an engine and a transmission, a meet point learning controller is provided to perform learning control for obtaining a learning value based on information on a meet point at which the lock-up clutch starts torque transmission. The meet point learning controller estimates a LU transmission torque based on a difference between an engine torque signal value and a torque converter transmission torque when the lock-up clutch moves from a non-engaged state to an engaged state during traveling of the vehicle, and uses, as the meet point information, a meet point detection pressure at a time when the LU transmission torque estimated value is determined to have entered an upward trend.Type: ApplicationFiled: August 12, 2016Publication date: August 30, 2018Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu ARAKI, Seiji KASAHARA, Hideshi WAKAYAMA, Kouji SAITOU, Hiroyasu TANAKA
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Fiber manufacturing method, non-woven fabric manufacturing method, and fiber manufacturing equipment
Patent number: 10052807Abstract: A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.Type: GrantFiled: August 8, 2016Date of Patent: August 21, 2018Assignee: FUJIFILM CorporationInventors: Yukihiro Katai, Shigehisa Sugiyama, Seiji Kasahara, Yasuhisa Shimoda, Masahiro Esaki -
Patent number: 10045936Abstract: A method is provided which enables a drug to be concentrated at needle-like protruding portions and which further allows transdermal-absorption sheets to be manufactured at high production efficiency. The method repeats a step of feeding a drug-containing solution from a liquid feeding apparatus to a mold and filling needle-like recessed portions with the drug-containing solution through a nozzle aligned over the needle-like recessed portions in a state where the nozzle and a front surface of the mold are brought into contact with each other, and a step of moving the liquid feeding apparatus relative to the mold in a state where the nozzle and the front surface of the mold are brought into contact with each other. Thus, the two-dimensionally arranged needle-like recessed portions are filled with the drug-containing solution.Type: GrantFiled: May 12, 2015Date of Patent: August 14, 2018Assignee: FUJIFILM CorporationInventors: Aya Mochizuki, Seiji Kasahara, Yanlong Che, Shotaro Ogawa
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Publication number: 20180216729Abstract: In a vehicle equipped with a torque converter 4 having a lock-up clutch (3), learning control for obtaining a learning value (L_n) on the basis of meet-point information, with which the lock-up clutch (3) initiates torque transmission, is carried out. When the lock-up clutch (3) experiences a transition to an engaged state during travel, a meet-point learning control unit (12c) calculates an LU transmission torque estimate on the basis of the difference between the engine torque (engine torque signal value Te) and the torque converter transmission torque (?·Ne2). Excess clutch capacity is detected when the LU transmission torque estimate is greater than an excess capacity determination transmission torque threshold within a prescribed amount of time after an initial pressure (P_n) based on the learning value (L_n) is instructed. When excess clutch capacity is detected, a learning value correction that reduces the learning value (L_n) is carried out.Type: ApplicationFiled: August 31, 2016Publication date: August 2, 2018Applicants: JATCO Ltd, NISSAN MOTOR CO., LTD.Inventors: Toshimitsu ARAKI, Hideshi WAKAYAMA, Kouji SAITOU, Seiji KASAHARA, Tetsuya IZUMI
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Patent number: 9987236Abstract: A transdermal absorption sheet and a manufacturing method for the transdermal absorption sheet includes a laminating step of forming a multilayer film with a viscosity difference by forming, on a support, a lower layer containing a first transdermal absorption material and an upper layer containing a drug and a second transdermal absorption material and having a lower viscosity than the lower layer, a filling step of filling needle-like recessed portions corresponding to inverted needle-like protruding portions with a solution of the transdermal absorption material by pressing a mold in which the needle-like recessed portions are arranged in a two-dimensional array, against a surface of the multilayer film supported by the support to allow the multilayer film to flow, a solidifying step of solidifying the multilayer film with the mold pressed against the surface of the multilayer film, and a peeling-off step of peeling the solidified multilayer film from the mold.Type: GrantFiled: January 11, 2017Date of Patent: June 5, 2018Assignee: FUJIFILM CorporationInventors: Junya Yoshida, Seiji Kasahara, Takayoshi Oyamada, Yanlong Che
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Patent number: 9845095Abstract: A vehicle control device for controlling a vehicle with a drive source, a friction transmission mechanism provided between the drive source and drive wheels and a fluid transmission mechanism provided between the friction transmission mechanism and the drive source includes a suppression unit configured to suppress a decrease of a speed ratio of the fluid transmission mechanism if the speed ratio becomes negative when the vehicle starts.Type: GrantFiled: July 8, 2014Date of Patent: December 19, 2017Assignee: JATCO LTDInventors: Seiji Kasahara, Hideshi Wakayama, Naohiro Hoshi
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Patent number: 9649281Abstract: A transdermal absorption sheet and a manufacturing method for the transdermal absorption sheet includes a laminating step of forming a multilayer film with a viscosity difference by forming, on a support, a lower layer containing a first transdermal absorption material and an upper layer containing a drug and a second transdermal absorption material and having a lower viscosity than the lower layer, a filling step of filling needle-like recessed portions corresponding to inverted needle-like protruding portions with a solution of the transdermal absorption material by pressing a mold in which the needle-like recessed portions are arranged in a two-dimensional array, against a surface of the multilayer film supported by the support to allow the multilayer film to flow, a solidifying step of solidifying the multilayer film with the mold pressed against the surface of the multilayer film, and a peeling-off step of peeling the solidified multilayer film from the mold.Type: GrantFiled: May 12, 2015Date of Patent: May 16, 2017Assignee: FUJIFILM CorporationInventors: Junya Yoshida, Seiji Kasahara, Takayoshi Oyamada, Yanlong Che
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Publication number: 20170119691Abstract: A transdermal absorption sheet and a manufacturing method for the transdermal absorption sheet includes a laminating step of forming a multilayer film with a viscosity difference by forming, on a support, a lower layer containing a first transdermal absorption material and an upper layer containing a drug and a second transdermal absorption material and having a lower viscosity than the lower layer, a filling step of filling needle-like recessed portions corresponding to inverted needle-like protruding portions with a solution of the transdermal absorption material by pressing a mold in which the needle-like recessed portions are arranged in a two-dimensional array, against a surface of the multilayer film supported by the support to allow the multilayer film to flow, a solidifying step of solidifying the multilayer film with the mold pressed against the surface of the multilayer film, and a peeling-off step of peeling the solidified multilayer film from the mold.Type: ApplicationFiled: January 11, 2017Publication date: May 4, 2017Applicant: FUJIFILM CorporationInventors: Junya YOSHIDA, Seiji KASAHARA, Takayoshi OYAMADA, Yanlong CHE
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FIBER MANUFACTURING METHOD, NON-WOVEN FABRIC MANUFACTURING METHOD, AND FIBER MANUFACTURING EQUIPMENT
Publication number: 20160354964Abstract: A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.Type: ApplicationFiled: August 8, 2016Publication date: December 8, 2016Applicant: FUJIFILM CorporationInventors: Yukihiro KATAI, Shigehisa SUGIYAMA, Seiji KASAHARA, Yasuhisa SHIMODA, Masahiro ESAKI -
Publication number: 20160159359Abstract: A vehicle control device for controlling a vehicle with a drive source, a friction transmission mechanism provided between the drive source and drive wheels and a fluid transmission mechanism provided between the friction transmission mechanism and the drive source includes a suppression unit configured to suppress a decrease of a speed ratio of the fluid transmission mechanism if the speed ratio becomes negative when the vehicle starts.Type: ApplicationFiled: July 8, 2014Publication date: June 9, 2016Applicant: JATCO LtdInventors: Seiji KASAHARA, Hideshi WAKAYAMA, Naohiro HOSHI
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Publication number: 20150238413Abstract: A method is provided which enables a drug to be concentrated at needle-like protruding portions and which further allows transdermal-absorption sheets to be manufactured at high production efficiency. The method repeats a step of feeding a drug-containing solution from a liquid feeding apparatus to a mold and filling needle-like recessed portions with the drug-containing solution through a nozzle aligned over the needle-like recessed portions in a state where the nozzle and a front surface of the mold are brought into contact with each other, and a step of moving the liquid feeding apparatus relative to the mold in a state where the nozzle and the front surface of the mold are brought into contact with each other. Thus, the two-dimensionally arranged needle-like recessed portions are filled with the drug-containing solution.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Applicant: FUJIFILM CORPORATIONInventors: Aya MOCHIZUKI, Seiji KASAHARA, Yanlong CHE, Shotaro OGAWA
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Publication number: 20150238434Abstract: A transdermal absorption sheet and a manufacturing method for the transdermal absorption sheet includes a laminating step of forming a multilayer film with a viscosity difference by forming, on a support, a lower layer containing a first transdermal absorption material and an upper layer containing a drug and a second transdermal absorption material and having a lower viscosity than the lower layer, a filling step of filling needle-like recessed portions corresponding to inverted needle-like protruding portions with a solution of the transdermal absorption material by pressing a mold in which the needle-like recessed portions are arranged in a two-dimensional array, against a surface of the multilayer film supported by the support to allow the multilayer film to flow, a solidifying step of solidifying the multilayer film with the mold pressed against the surface of the multilayer film, and a peeling-off step of peeling the solidified multilayer film from the mold.Type: ApplicationFiled: May 12, 2015Publication date: August 27, 2015Applicant: FUJIFILM CorporationInventors: Junya YOSHIDA, Seiji KASAHARA, Takayoshi OYAMADA, Yanlong CHE