Patents by Inventor Toru Fujikawa
Toru Fujikawa 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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Publication number: 20190353168Abstract: An electric pump includes: a motor housing; a pump housing adjacent to the motor housing; a rotor accommodated in the motor housing and axially supported by a rotating shaft; a stator disposed radially outward of the rotor and fixed to the motor housing; a pump unit accommodated in the pump housing and configured to suck and discharge a fluid by rotation of the rotor; and a cup-shaped can provided between the rotor and the stator to prevent the fluid in the pump unit from being introduced into the stator. A seal member is disposed between the can and the motor housing, and a communication path communicating inner and outer sides of the can is formed between the motor and pump housings at a position closer to an opening side of the can than the seal member.Type: ApplicationFiled: May 6, 2019Publication date: November 21, 2019Applicant: AISIN SEIKI KABUSHIKI KAISHAInventor: Toru FUJIKAWA
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Patent number: 8267058Abstract: A valve opening/closing timing control apparatus includes a phase displacing mechanism for displacing relative phase between a drive-side rotational member and a driven-side rotational member rotatable in unison with a cam shaft, a first pump driven by an internal combustion engine, a second pump driven by a drive source different from the internal combustion engine, a locking mechanism capable of locking the relative phase to an initial phase suitable for starting the internal combustion engine, and an urging mechanism 3 for urging the phase displacing mechanism in the advancing direction between the most retarding phase and the initial phase, a minimal urging force of the urging mechanism being set so as to override the displacing force toward the retarding phase side at the minimal pressure.Type: GrantFiled: September 8, 2008Date of Patent: September 18, 2012Assignee: Aisin Seiki Kabushiki KaishaInventors: Shigemitsu Suzuki, Toru Fujikawa, Yasutaka Miura, Naoto Toma
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Patent number: 8127793Abstract: A rotary valve apparatus includes a casing having a fluid passageway, a rotor rotatably mounted in the casing and configured to control, by rotation thereof, a flow state of fluid flowing in the fluid passageway, a drive mechanism for rotating the rotor, and a lock mechanism configured to allow transmission of a rotational force from the drive mechanism to the rotor and to inhibit rotation of the rotor under non-rotation driving state of the driving mechanism.Type: GrantFiled: December 7, 2009Date of Patent: March 6, 2012Assignee: Aisin Seiki Kabushiki KaishaInventors: Yoshikuni Ito, Toru Fujikawa
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Publication number: 20110180738Abstract: A rotary valve apparatus includes a casing having a fluid passageway, a rotor rotatably mounted in the casing and configured to control, by rotation thereof, a flow state of fluid flowing in the fluid passageway, a drive mechanism for rotating the rotor, and a lock mechanism configured to allow transmission of a rotational force from the drive mechanism to the rotor and to inhibit rotation of the rotor under non-rotation driving state of the driving mechanism.Type: ApplicationFiled: December 7, 2009Publication date: July 28, 2011Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Yoshikuni Ito, Toru Fujikawa
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Publication number: 20100175650Abstract: A valve opening/closing timing control apparatus includes a phase displacing mechanism for displacing relative phase between a drive-side rotational member and a driven-side rotational member rotatable in unison with a cam shaft, a first pump driven by an internal combustion engine, a second pump driven by a drive source different from the internal combustion engine, a locking mechanism capable of locking the relative phase to an initial phase suitable for starting the internal combustion engine, and an urging mechanism 3 for urging the phase displacing mechanism in the advancing direction between the most retarding phase and the initial phase, a minimal urging force of the urging mechanism being set so as to override the displacing force toward the retarding phase side at the minimal pressure.Type: ApplicationFiled: September 8, 2008Publication date: July 15, 2010Applicant: AISIN SEIKI KABUSHIKI KAISHAInventors: Shigemitsu Suzuki, Toru Fujikawa, Yasutaka Miura, Naoto Toma
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Patent number: 7452908Abstract: This invention relates to compounds which are represented by the general formula [I] [in which A stands for a group of the following formula [ao] or [b0] Ar1, Ar2 and Ar3 stand for optionally substituted phenyl; k stands for 0 or 1; m, n and s stand for 0, 1 or 2; R1 stands for hydrogen or optionally substituted lower alkyl; R2, R3, R4 and R5 either stand for hydrogen or optionally substituted lower alkyl, or R2 and R3, or R4 and R5 together stand for trimethylene and the like; R60 stands for hydrogen, alkyl, or the like; R61 and R71 either stand for alkyl and the like, or together stand for trimethylene and the like; X stands for carbonyl or methylene; Y stands for nitrogen or methine; and Q? stands for anion], and the like. The compounds of the invention exhibit selective antagonism to muscarinic M3 receptors, and therefore are useful as safe and effective agents showing little side effect, for treating diseases of the respiratory, urinary and digestive systems.Type: GrantFiled: May 5, 2004Date of Patent: November 18, 2008Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Yufu Sagara, Minaho Uchiyama, Akira Naya, Toshifumi Kimura, Tomoshige Numazawa, Toru Fujikawa, Norikazu Otake, Kazuhito Noguchi
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Patent number: 7287507Abstract: In order to provide an engine oil supply apparatus including a second oil pump (12) which can draw in and discharge oil quickly regardless of whether or not a first oil pump (11) is driven and which does not need to be large, an engine oil supply apparatus (Y) includes a first oil pump (11) drawing oil through a first oil passage (21) from an oil holder (13) holding oil, a second oil pump (12) connected in series with the first oil pump (11) through a connection oil passage (26) and driven independently of the first oil pump (11), a first supply oil passage (23) for supplying oil to a first circulation section (41) from the first oil pump (11), and a second supply oil passage (24) for supplying oil to a second circulation section (42) from the second oil pump (12). In the engine oil supply apparatus (Y), a first oil reservoir (15) holds oil to be supplied to the second oil pump (12) and is provided independently of the oil holder (13) is provided.Type: GrantFiled: February 27, 2004Date of Patent: October 30, 2007Assignee: Aisin Seiki Kabushiki KaishaInventors: Kazumasa Futamura, Makoto Shirai, Toru Fujikawa, Atsutoshi Ikegawa
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Publication number: 20060231057Abstract: In order to provide an engine oil supply apparatus including a second oil pump (12) which can draw in and discharge oil quickly regardless of whether or not a first oil pump (11) is driven and which does not need to be large, an engine oil supply apparatus (Y) includes a first oil pump (11) drawing oil through a first oil passage (21) from an oil holder (13) holding oil, a second oil pump (12) connected in series with the first oil pump (11) through a connection oil passage (26) and driven independently of the first oil pump (11), a first supply oil passage (23) for supplying oil to a first circulation section (41) from the first oil pump (11), and a second supply oil passage (24) for supplying oil to a second circulation section (42) from the second oil pump (12). In the engine oil supply apparatus (Y), a first oil reservoir (15) holds oil to be supplied to the second oil pump (12) and is provided independently of the oil holder (13) is provided.Type: ApplicationFiled: February 27, 2004Publication date: October 19, 2006Inventors: Kazumasa Futamura, Makoto Shirai, Toru Fujikawa, Atsutoshi Ikegawa
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Patent number: 6809108Abstract: This invention relates to compounds which are represented by the general formula [I] [in which A stands for a group of the following formula [a0] or [b0] Ar1, Ar2 and Ar3 stand for optionally substituted phenyl; k stands for 0 or 1; m, n and a stand for 0, 1 or 2; R1 stands for hydrogen or optionally substituted lower alkyl; R2, R3, R4 and R5 either stand for hydrogen or optionally substituted lower alkyl, or R2 and R3, or R4 and R5 together stand for trimethylene and the like; R60 stands for hydrogen, alkyl, or the like; R61 and R71 either stand for alkyl and the like, or together stand for trimethylene and the like; X stands for carbonyl or methylene; Y stands for nitrogen or methine; and Q− stands for anion], and the like.Type: GrantFiled: March 26, 2002Date of Patent: October 26, 2004Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Yufu Sagara, Minaho Uchiyama, Akira Naya, Toshifumi Kimura, Tomoshige Numazawa, Toru Fujikawa, Norikazu Otake, Kazuhito Noguchi
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Publication number: 20040204369Abstract: This invention relates to compounds which are represented by the general formula [I] 1Type: ApplicationFiled: May 5, 2004Publication date: October 14, 2004Inventors: Yufu Sagara, Minaho Uchiyama, Akira Naya, Toshifumi Kimura, Tomoshige Numazawa, Toru Fujikawa, Norikazu Otake, Kazuhito Noguchi
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Patent number: 6699880Abstract: This invention relates to the compounds represented by the general formula [I], [in which A—D signify optionally substituted methine group(s) or nitrogen atom; E signifies oxygen or sulfur atom; signify optionally substituted mono- or bi-cyclic aliphatic nitrogen-containing heterocyclic group(s); R1 signifies lower alkenyl, lower alkynyl, cyclo(lower alkyl), lower alkanoyl, lower alkoxycarbonyl, optionally substituted lower alkyl and the like; and R2 signifies lower alkyl].Type: GrantFiled: April 15, 2002Date of Patent: March 2, 2004Assignee: Banyu Pharmaceutical Co., Ltd.Inventors: Takeru Yamakawa, Makoto Ando, Seita Koito, Kenji Ohwaki, Toshifumi Kimura, Toshihiko Saeki, Mitsuru Miyaji, Yuki Iwahori, Toru Fujikawa, Norikazu Otake, Kazuhito Noguchi
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Patent number: 6189507Abstract: A throttle valve control device for controlling the amount of inlet air fed to an internal combustion engine has a throttle valve disposed in an air intake passage, a throttle shaft integrally connected with the throttle valve so as to rotate with the throttle valve in a body, a driving source for generating driving torque, and a driving torque transmitting mechanism disposed between the driving source and the throttle shaft for transmitting the driving torque to the throttle shaft. The driving torque transmitting mechanism includes a torque limiting mechanism for limiting the transmitted driving torque to a predetermined level.Type: GrantFiled: May 20, 1999Date of Patent: February 20, 2001Assignee: Aisin Seiki Kabushiki KaishaInventors: Hideki Tsuchiya, Toru Fujikawa
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Patent number: 6009853Abstract: A throttle control apparatus that maintains a vehicle's ability to run during a throttle system failure includes a throttle-controlling ECU that calculates a throttle opening instruction value from an accelerator stroke signal outputted from an accelerator pedal sensor, and supplies a motor with a current value based on the instruction value, to control the opening of a throttle valve. If the deviation between the instruction value and the output value from a throttle sensor is greater than a reference value, the ECU determines that there is a system failure. If it is determined that a system failure exists, an internal combustion engine controlling ECU varies the number of cylinders of the engine in operation to vary the engine output, depending on whether the amount of depression of the accelerator pedal by the driver is greater than a predetermined value.Type: GrantFiled: November 21, 1997Date of Patent: January 4, 2000Assignee: Aisin Seiki Kabushiki KaishaInventors: Toru Fujikawa, Futoshi Kushigemachi, Masaru Shimizu, Hirotaka Kurita
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Patent number: 5934250Abstract: A throttle control apparatus controls the amount of inlet air fed to an internal combustion engine on the basis of the degree of opening of a throttle valve. The throttle valve is constituted by a valve body that is fixedly mounted on a valve shaft which is rotatably supported on a housing. The valve shaft is connected, via a reduction mechanism, to an output shaft of a coreless DC motor that is accommodated within the housing. The DC motor is operated to increase or decrease the amount of inlet air to the engine based on a change of the acceleration pedal position, for example by rotating the valve body by way of the valve shaft through an angle that corresponds to the change in position of the accelerator pedal. Employing a DC coreless motor allows the throttle valve to respond to a very quick positioning of the acceleration pedal with a relatively great degree of accuracy.Type: GrantFiled: March 26, 1998Date of Patent: August 10, 1999Assignee: Aisin Seiki Kabushiki KaishaInventors: Toru Fujikawa, Masanobu Matsusaka, Masaru Shimizu
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Patent number: 5267541Abstract: A control system for a variable displacement engine for an automobile changes a number of the cylinders of the engine when an engine load changes. The system sets an amendment value to a throttle valve opening in accordance with a throttle valve opening and an engine revolution. The system controls the throttle valve before the system changes a number of the cylinders. Thus the throttle valve is controlled to obtain the same torque before and after the change of the number of the cylinders.Type: GrantFiled: January 31, 1992Date of Patent: December 7, 1993Assignee: Aisin Seiki Kabushiki KaishaInventors: Yoshinori Taguchi, Yukihisa Oda, Tokihiko Akita, Masaru Shimizu, Toru Fujikawa
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Patent number: 5163402Abstract: A throttle control apparatus includes an accelerator operation mechanism, a throttle shaft, a driving source, an electromagnetic clutch mechanism, driving control means, accelerator operational amount detecting means, accelerator abnormality detecting means, throttle valve opening amount detecting means, throttle abnormality detecting means, valve abnormality detecting means and clutch control means. The accelerator abnormality detecting means judge the abnormality of the accelerator operational amount detecting means and the throttle abnormality detecting means judge the abnormality of the throttle valve opening amount detecting means. Furthermore, the valve abnormality detecting means judge the operation of the throttle control as abnormality when the amount of the throttle valve opening is more than a prescribed value under the condition which the operational amount of the accelerator operation amount is less than a prescribed value.Type: GrantFiled: December 26, 1991Date of Patent: November 17, 1992Assignee: Aisin Seiki Kabushiki KaishaInventors: Yoshinori Taguchi, Yukihisa Oda, Tokihiko Akita, Masaru Shimizu, Toru Fujikawa
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Patent number: 5163389Abstract: A hydraulic valve lifter having function to stop valve drive comprises a cylinder, a lifter body sliding in the cylinder, a cam driving the lifter body, a tappet sliding in the lifter body, a valve driven by the tappet, a plunger located between the lifter body and the tappet, a reservoir formed in the lifter body and being in fluid communication with a hydraulic source always, a first pressure room formed in the tappet and separated from the reservoir via the plunger, a check valve controlling a communication between the reservoir and the first pressure room, a piston sliding in the lifter body and having a rod driving the check valve, a second pressure room located at one side of the piston and being in fluid communication with the hydraulic source via a control valve, a room located at the other side of the piston, and a passage decreasing a pressure in the room.Type: GrantFiled: March 27, 1992Date of Patent: November 17, 1992Assignee: Aisin Seiki Kabushiki KaishaInventors: Toru Fujikawa, Yasuhiro Kobayashi, Tadashi Terazawa