Patents by Inventor Masaaki Yamaguchi
Masaaki Yamaguchi 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: 10174686Abstract: An ECU calculates a target phase angle of an intake valve, a target phase angle of an exhaust valve, and a target overlap period based on a rotational speed and a load factor of an engine. The ECU is configured to, in the case where valve timings of the intake valve and the exhaust valve are advanced, set the target phase angle of an intake valve and the target phase angle of the exhaust valve as the target phase angles of the exhaust valve and the intake valve when a minus overlap takes place.Type: GrantFiled: April 11, 2016Date of Patent: January 8, 2019Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiro Nozaki, Masaaki Yamaguchi
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Publication number: 20180347445Abstract: A cooling device includes: an air blast passage; a heater core that is disposed in the air blast passage; an air blast volume adjusting member that is opened and closed to adjust an air blast volume which flows in the heater core; a flow rate adjuster that adjusts a flow rate of the coolant which is introduced into the heater core; and a controller. The controller sets the flow rate of the coolant which is adjusted by the flow rate adjuster to be less than a lower limit value of an adjustable range of the flow rate of the coolant which is adjusted by the flow rate adjuster in a vehicle compartment air-conditioning state in which the air blast volume adjusting member allows an air blast to flow to the heater core when the air blast volume adjusting member fully closes the heater core side of the air blast passage.Type: ApplicationFiled: April 24, 2018Publication date: December 6, 2018Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Rihito Kaneko, Noboru Takagi, Naoto Hisaminato, Mitsuru Yamaguchi, Hirokazu Andoh, Masaaki Yamaguchi, Yoshihiro Furuya
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Patent number: 10077826Abstract: Respective outer peripheral surfaces (33, 35) of opening-side end portions (30, 31) of a front cover (12) and a pump shell (7), which have been shaped by pressing, are formed by slimming such that the outside diameters of the slimmed outer peripheral surfaces are equal to each other. With the opening-side end portions abutting against each other, a high-energy beam such as a laser beam (R) is radiated toward the abutment surfaces (30, 31) from the radially outer side to weld the abutment surfaces to each other. Consequently, it is possible to perform welding accurately through easy processing in order to easily manufacture a fluid coupling with high precision that facilitates post-processing.Type: GrantFiled: November 26, 2014Date of Patent: September 18, 2018Assignees: AISIN AW CO. LTD., AISIN AW INDUSTRIES CO., LTD.Inventors: Naohisa Momiyama, Masayoshi Kato, Hiroshi Asane, Hitoshi Matsuura, Masaaki Yamaguchi, Kiyoshi Makihira, Takakazu Yamane, Yukihiro Yoshida, Shinya Kobayashi, Taiki Watanabe, Norio Nagahira, Kazuyoshi Miyamoto
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Publication number: 20160298503Abstract: An ECU calculates a target phase angle of an intake valve, a target phase angle of an exhaust valve, and a target overlap period based on a rotational speed and a load factor of an engine. The ECU is configured to, in the case where valve timings of the intake valve and the exhaust valve are advanced, set the target phase angle of an intake valve and the target phase angle of the exhaust valve as the target phase angles of the exhaust valve and the intake valve when a minus overlap takes place.Type: ApplicationFiled: April 11, 2016Publication date: October 13, 2016Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tomohiro NOZAKI, Masaaki Yamaguchi
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Publication number: 20160290461Abstract: Respective outer peripheral surfaces (33, 35) of opening-side end portions (30, 31) of a front cover (12) and a pump shell (7), which have been shaped by pressing, are formed by slimming such that the outside diameters of the slimmed outer peripheral surfaces are equal to each other. With the opening-side end portions abutting against each other, a high-energy beam such as a laser beam (R) is radiated toward the abutment surfaces (30, 31) from the radially outer side to weld the abutment surfaces to each other. Consequently, it is possible to perform welding accurately through easy processing in order to easily manufacture a fluid coupling with high precision that facilitates post-processing.Type: ApplicationFiled: November 26, 2014Publication date: October 6, 2016Applicants: AISIN AW CO. LTD., AISIN AW INDUSTRIES CO., LTD.Inventors: Naohisa MOMIYAMA, Masayoshi KATO, Hiroshi ASANE, Hitoshi MATSUURA, Masaaki YAMAGUCHI, Kiyoshi MAKIHIRA, Takakazu YAMANE, Yukihiro YOSHIDA, Shinya KOBAYASHI, Taiki WATANABE, Norio NAGAHIRA, Kazuyoshi MIYAMOTO
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Patent number: 8439762Abstract: A torsional damper includes a torque limiter and a damper. The torque limiter includes at least two friction members, allows transmission of torque, and prohibits transmission of excessive torque. The damper absorbs torsional vibration through resilient deformation of a spring. The torque limiter is a wet torque limiter in which the friction members are arranged in an oil chamber filled with lubricating oil. The damper is a dry damper in which the spring is not immersed in the lubricating oil.Type: GrantFiled: February 26, 2010Date of Patent: May 14, 2013Assignee: Aisin Aw Industries Co., Ltd.Inventors: Yoshito Takeshita, Fumiaki Doseki, Masaaki Yamaguchi, Taku Suzuki
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Patent number: 8398492Abstract: A damper includes an outer cover having a front cover and a rear cover. The covers are joined to form a lubricant oil accommodation chamber for accommodating liquid. A damper device, a limiter mechanism, a first plate including a first collar portion located toward the front of the limiter mechanism, and a second plate including a second collar portion located toward the rear of the limiter mechanism are arranged in the outer cover. The limiter mechanism includes a first limiter plate, which is an input side on the torque transmission path, a second limiter plate, which is an output side on the torque transmission path, and a limiter disc spring, which presses the limiter plates.Type: GrantFiled: October 29, 2009Date of Patent: March 19, 2013Assignee: Aisin AW Industries Co., Ltd.Inventors: Yoshito Takeshita, Fumiaki Doseki, Masahiro Yamaguchi, Masaaki Yamaguchi, Taku Suzuki, Tetsuya Onaga
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Publication number: 20110195793Abstract: A damper includes an outer cover having a front cover and a rear cover. The covers are joined to form a lubricant oil accommodation chamber for accommodating liquid. A damper device, a limiter mechanism, a first plate including a first collar portion located toward the front of the limiter mechanism, and a second plate including a second collar portion located toward the rear of the limiter mechanism are arranged in the outer cover. The limiter mechanism includes a first limiter plate, which is an input side on the torque transmission path, a second limiter plate, which is an output side on the torque transmission path, and a limiter disc spring, which presses the limiter plates.Type: ApplicationFiled: October 29, 2009Publication date: August 11, 2011Applicant: AISIN AW INDUSTRIES CO., LTD.Inventors: Yoshito Takeshita, Fumiaki Doseki, Masahiro Yamaguchi, Masaaki Yamaguchi, Taku Suzuki, Tetsuya Onaga
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Publication number: 20110120832Abstract: A torsional damper includes a torque limiter and a damper. The torque limiter includes at least two friction members, allows transmission of torque, and prohibits transmission of excessive torque. The damper absorbs torsional vibration through resilient deformation of a spring. The torque limiter is a wet torque limiter in which the friction members are arranged in an oil chamber filled with lubricating oil. The damper is a dry damper in which the spring is not immersed in the lubricating oil.Type: ApplicationFiled: February 26, 2010Publication date: May 26, 2011Applicant: AISIN AW INDUSTRIES CO., LTD.Inventors: Yoshito Takeshita, Fumiaki Doseki, Masaaki Yamaguchi, Taku Suzuki
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Patent number: 7624993Abstract: The invention provides a novel dual-membered suctional gasket which has a reliable function to fit and fix the gasket to an object to be sealed, and also provides an effective suction effect and air venting function. For that purpose, the gasket which has a function to prevent fluid from leaking when compressed, comprises an inner sealing member 1 and outer sealing member 2 arranged on a surface perpendicular to a compressing direction; and a plurality of connecting members 3 for connecting and fixing the inner sealing member 1 and the outer sealing member 2 together. Suction cup structures are formed, when a proper amount of air closed between the inner sealing member and the outer sealing member is vented from the inner sealing member, the outer sealing member or the both sealing members by compressing the dual-membered gasket.Type: GrantFiled: July 27, 2005Date of Patent: December 1, 2009Assignees: Kokoku Intech Co. Ltd., Honda Giken Kogyo Kabushiki KaishaInventors: Yutaka Kikuchi, Hirofumi Hino, Masaki Ueno, Masaaki Yamaguchi, Yasuaki Nagai
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Patent number: 7464542Abstract: An exhaust gas purification system for an internal combustion engine can quickly recover the exhaust gas purification ability of an exhaust gas purification device by increasing opportunities to release the SOx occluded in the exhaust gas purification device. In the exhaust gas purification system having the exhaust gas purification device having the property of occluding the SOx in the exhaust gas emitted from the internal combustion engine and collecting particulate matter contained in the exhaust gas, when the load of the internal combustion engine falls within a load range in which SOx poisoning recovery control can be executed, during the time when the particulate matter is oxidized and removed by collection ability regeneration control (S105), the collection ability regeneration control is interrupted and the SOx poisoning recovery control is executed (S106, S107).Type: GrantFiled: August 11, 2006Date of Patent: December 16, 2008Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shunsuke Toshioka, Masaaki Kobayashi, Hisashi Ohki, Masaaki Yamaguchi, Kotaro Hayashi
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Publication number: 20080067760Abstract: The invention provides a novel dual-membered suctional gasket which has a reliable function to fit and fix the gasket to an object to be sealed, and also provides an effective suction effect and air venting function. For that purpose, the gasket which has a function to prevent fluid from leaking when compressed, comprises an inner sealing member 1 and outer sealing member 2 arranged on a surface perpendicular to a compressing direction; and a plurality of connecting members 3 for connecting and fixing the inner sealing member 1 and the outer sealing member 2 together. Suction cup structures are formed, when a proper amount of air closed between the inner sealing member and the outer sealing member is vented from the inner sealing member, the outer sealing member or the both sealing members by compressing the dual-membered gasket.Type: ApplicationFiled: July 27, 2005Publication date: March 20, 2008Applicant: KOKOKU INTECH CO., LTDInventors: Yutaka Kikuchi, Hirofumi Hino, Masaki Ueno, Masaaki Yamaguchi, Yasuaki Nagai
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Patent number: 7309197Abstract: An internal gear shaving machine 1 which brings a shaving cutter 3 and an internal gear held by a workpiece chuck 2 into engagement with a crossed axes angle, and subjects the tooth flanks of the internal gear to final machining while it rotationally drives at least one of the shaving cutter 3 and the workpiece chuck 2. The workpiece chuck 2 and shaving cutter 3 are supported movably toward and away from each other in a vertical direction with the workpiece chuck 2 higher and supported movably in the horizontal direction relative to each other. The workpiece chuck 3 is constituted to hold the outer circumferential surface of the internal gear with the axis of rotation of the internal gear oriented in a up-down direction so that shavings produced during processing by the shaving cutter can fall downwardly from the internal gear.Type: GrantFiled: May 11, 2006Date of Patent: December 18, 2007Assignee: Kanzaki Kokyukoki MFG. Co., Ltd.Inventors: Hiroki Taki, Ryoji Yoshida, Masaaki Yamaguchi
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Patent number: 7165394Abstract: An exhaust gas purification system for an internal combustion engine can quickly recover the exhaust gas purification ability of an exhaust gas purification device by increasing opportunities to release the SOx occluded in the exhaust gas purification device. In the exhaust gas purification system having the exhaust gas purification device having the property of occluding the SOx in the exhaust gas emitted from the internal combustion engine and collecting particulate matter contained in the exhaust gas, when the load of the internal combustion engine falls within a load range in which SOx poisoning recovery control can be executed, during the time when the particulate matter is oxidized and removed by collection ability regeneration control (S105), the collection ability regeneration control is interrupted and the SOx poisoning recovery control is executed (S106, S107).Type: GrantFiled: May 12, 2004Date of Patent: January 23, 2007Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shunsuke Toshioka, Masaaki Kobayashi, Hisashi Ohki, Masaaki Yamaguchi, Kotaro Hayashi
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Publication number: 20070000237Abstract: An exhaust gas purification system for an internal combustion engine can quickly recover the exhaust gas purification ability of an exhaust gas purification device by increasing opportunities to release the SOx occluded in the exhaust gas purification device. In the exhaust gas purification system having the exhaust gas purification device having the property of occluding the SOx in the exhaust gas emitted from the internal combustion engine and collecting particulate matter contained in the exhaust gas, when the load of the internal combustion engine falls within a load range in which SOx poisoning recovery control can be executed, during the time when the particulate matter is oxidized and removed by collection ability regeneration control (S105), the collection ability regeneration control is interrupted and the SOx poisoning recovery control is executed (S106, S107).Type: ApplicationFiled: August 11, 2006Publication date: January 4, 2007Applicant: Toyota Jidosha Kabushiki KaishaInventors: Shunsuke Toshioka, Masaaki Kobayashi, Hisashi Ohki, Masaaki Yamaguchi, Kotaro Hayashi
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Publication number: 20060257221Abstract: An internal gear shaving machine 1 which brings a shaving cutter 3 and an internal gear held by a workpiece chuck 2 into engagement with a crossed axes angle, and subjects the tooth flanks of the internal gear to final machining while it rotationally drives at least one of the shaving cutter 3 and the workpiece chuck 2. The workpiece chuck 2 and shaving cutter 3 are supported movably toward and away from each other in a vertical direction with the workpiece chuck 2 higher and supported movably in the horizontal direction relative to each other. The workpiece chuck 3 is constituted to hold the outer circumferential surface of the internal gear with the axis of rotation of the internal gear oriented in a up-down direction so that shavings produced during processing by the shaving cutter can fall downwardly from the internal gear.Type: ApplicationFiled: May 11, 2006Publication date: November 16, 2006Inventors: Hiroki Taki, Ryoji Yoshida, Masaaki Yamaguchi
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Patent number: 7074148Abstract: A hydraulic controller of a power transmission device is equipped with a transmission for changing a rotation speed of motor power input from a motor and outputting the motor power; a forward/backward change-over mechanism provided between an input shaft, where the motor power of the motor is input and the transmission; and a torque converter having a direct coupling mechanism for transmitting the motor power between an output shaft and the input shaft of the motor; a solenoid valve for adjusting an original pressure and generating a control pressure; and a change-over element for changing over a hydraulic pressure supplied to the forward/backward change-over mechanism so as to become a low pressure during deceleration driving when the direct coupling mechanism is controlled by the solenoid valve, wherein any one of engagement states of the forward/backward change-over mechanism and the direct coupling mechanism is controlled by the control pressure.Type: GrantFiled: August 9, 2004Date of Patent: July 11, 2006Assignee: Honda Motor Co., Ltd.Inventors: Tomoaki Ishikawa, Shigeji Nakano, Kazunori Fujishima, Masaaki Yamaguchi, Tsuyoshi Fujita, Takao Ueno
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Patent number: 6973785Abstract: An engine including a recirculation passage, which connects an exhaust passage to an intake passage, and an EGR valve arranged in the recirculation passage. An electronic control unit (ECU) obtains a target opening degree of the EGR valve in accordance with an operating state of the engine and controls the EGR valve so that the opening degree of the EGR valve becomes equal to the obtained target opening degree. When opening the EGR valve from a fully closed state, the ECU restricts the opening degree of the EGR valve to a restricted opening degree that is smaller than the target opening degree during a predetermined delay time before actuating the EGR valve to the target opening degree. This prevent exhaust gas from being excessively recirculated to the intake passage even if the difference between the exhaust pressure and the intake pressure is too large when starting EGR.Type: GrantFiled: June 27, 2003Date of Patent: December 13, 2005Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Tsutomu Umehara, Masaaki Yamaguchi, Hiroki Kinuhata
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Patent number: 6973379Abstract: A theoretical torque transmitted through a belt is calculated, and a first guaranteed torque is calculated by adding a marginal torque to the theoretical torque. In step S101, the theoretical torque is multiplied by a safety factor, calculating a second guaranteed torque. The second guaranteed torque is set to a value greater than a lower limit value. A smaller one of the first guaranteed torque and the second guaranteed torque is stored in a buffer, and a pressing force calculation reference torque is set through the buffer.Type: GrantFiled: October 8, 2004Date of Patent: December 6, 2005Assignee: Honda Motor Co., Ltd.Inventors: Masaaki Yamaguchi, Keisuke Katsuta
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Patent number: 6958000Abstract: A finishing wheel holding mechanism for a gear finishing apparatus using a finishing wheel having internal teeth, which permits simple and quick fitting or replacement of a finishing wheel is provided. The finishing wheel holding mechanism comprises a head frame 21 having at the center an opening portion for holding a finishing wheel, and an annular finishing wheel holder portion 22 for fitting finishing wheels A1 (A2), supported rotatablly within the opening portion of the head frame 21; and the finishing wheel holder comprises a support gear 50 having an open end portion 53 for finishing wheel insertion and an accepting portion 54 for fixing the finishing wheel, an annular shifting body 55 within the open end portion 53, a projection 57 contacting the finishing wheel to serve as a stopper, a pressing collar 58 inserted into the shifting body 55 to fix the finishing wheel by sliding the shifting body toward the finishing wheel, and an actuator 60 for driving the shifting body 55 toward the accepting portion.Type: GrantFiled: September 29, 2004Date of Patent: October 25, 2005Assignee: Kanzaki Kokyukoki Mfg. Co., Ltd.Inventors: Norihiro Yoshioka, Koji Kawamoto, Masaaki Yamaguchi