Patents by Inventor Takashi Tomita
Takashi Tomita 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: 20240150870Abstract: To provide an aluminum alloy in which natural aging is suppressed and a method for producing the same. This disclosure relates to an Al—Si-based aluminum alloy containing Si, Mg, Mn, Fe, and unavoidable impurities and Al—Si—Mg—Fe—Mn-based compounds, and further to a method for producing said Al—Si—based aluminum alloy by controlling the cooling process of a molten alloy during casting.Type: ApplicationFiled: October 31, 2023Publication date: May 9, 2024Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yuichi FURUKAWA, Yuji Okada, Takashi Mizuno, Takashi Tomita, Nobuyuki Shinohara
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Patent number: 11976667Abstract: A centrifugal compressor comprises: an impeller; an inlet pipe portion forming an intake passage to introduce air to the impeller; and a throttle mechanism capable of reducing a flow passage area of the intake passage upstream of the impeller. The throttle mechanism includes an annular portion configured to move between a first position and a second position upstream of the first position in an axial direction of the impeller. In a cross-section along a rotational axis of the impeller, an outer peripheral surface of the annular portion is formed to smoothly connect a leading edge and a trailing edge of the annular portion.Type: GrantFiled: March 19, 2019Date of Patent: May 7, 2024Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.Inventors: Kenichiro Iwakiri, Isao Tomita, Masaki Tojo, Takashi Yoshimoto
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Publication number: 20240145166Abstract: One object is to manufacture a magnetic base body containing soft magnetic metal particles with a high content percentage of Fe. A manufacturing method of a magnetic base body according to one embodiment includes: producing a molded body containing a plurality of soft magnetic metal particles at a filling factor of 85% or higher, each of the plurality of soft magnetic metal particles containing Fe and an element A more apt to oxidation than Fe; and heating the molded body to form an insulating film on a surface of each of the plurality of soft magnetic metal particles, the insulating film containing an oxide of Fe and an oxide of the element A. A content percentage of Fe in the plurality of soft magnetic metal particles after the heating is higher than a content percentage of Fe in the plurality of soft magnetic metal particles before the heating.Type: ApplicationFiled: October 30, 2023Publication date: May 2, 2024Inventors: Tomoya HAGIWARA, Tatsuya TOMITA, Takashi NAKAJIMA
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Patent number: 11959177Abstract: A component comprising a core part and a surface layer is provided. The core part contains C: 0.01%? and <0.20%, Si: ?1.0%, Mn: 1.5%? and ?3.0%, P: 0.02% or less, S: ?0.06%, Cr: 0.30%? and ?3.0%, Mo: 0.005%? and ?0.40%, V: 0.02%? and ?0.5%, Nb: 0.003%? and ?0.20%, Al: 0.010%? and ?2.0%, Ti: 0.005%< and <0.025%, N: ?0.0200%, Sb: 0.0005%? and ?0.02%, and the balance consisting of Fe and incidental impurities; and a steel microstructure that contains bainite phase in an area ratio of more than 50%. The surface layer has high nitrogen and carbon contents relative to the chemical composition of the core part.Type: GrantFiled: December 1, 2020Date of Patent: April 16, 2024Assignee: JFE STEEL CORPORATIONInventors: Masayuki Kasai, Takashi Iwamoto, Kunikazu Tomita
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Patent number: 11842754Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, the lighter-than-air gas concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.Type: GrantFiled: May 10, 2022Date of Patent: December 12, 2023Assignee: Western Digital Technologies, Inc.Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
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Patent number: 11557712Abstract: A vibration generating device 10 includes: a diaphragm 11; and a first piezoelectric actuator 12 and a second piezoelectric actuator 13 attached on an upper surface 11a and a lower surface 11b of the diaphragm 11, respectively, so as to sandwich the diaphragm 11 therebetween in a vicinity of an end surface of the diaphragm 11, wherein, in a top view of the upper surface 11a of the diaphragm 11, the first piezoelectric actuator 12 is disposed at a position shifted with respect to the second piezoelectric actuator 13.Type: GrantFiled: February 15, 2019Date of Patent: January 17, 2023Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
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Patent number: 11489524Abstract: A semiconductor device includes: a pair of input terminals or receiving a first input signal and a second input signal each of which changes between potentials in a predetermined range via a pair of transmission paths which include a first transmission path and a second transmission path; a first reception circuit which compares in potential the first input signal with the second input signal, and generates a first output signal based on a comparison result therebetween; a second reception circuit which generates a second output signal based on a comparison result of comparing in potential at least one of the first input signal and the second input signal with a reference potential.Type: GrantFiled: October 25, 2019Date of Patent: November 1, 2022Assignee: LAPIS SEMICONDUCTOR CO., LTD.Inventors: Takashi Tomita, Manabu Furuta
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Patent number: 11478821Abstract: A vibration generating device 90 includes: a housing 30 in a rectangular shape as viewed in a first direction, the housing 30 comprising: a first support portion 31 extending along a first side in a second direction perpendicular to the first direction and; a second support portion 32 extending along a second side opposite to the first side in the second direction; a panel 60 supported by the first support portion and the second support portion; and a piezoelectric element 11 attached to the panel in such a manner as to be shifted in the second direction toward the first side with respect to a central portion of the panel, wherein a width in the second direction of a portion of the panel supported by the first support portion is larger than a width in the second direction of a portion of the panel supported by the second support portion.Type: GrantFiled: February 14, 2019Date of Patent: October 25, 2022Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Fumihisa Ito, Takashi Tomita
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Publication number: 20220270651Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, the lighter-than-air gas concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.Type: ApplicationFiled: May 10, 2022Publication date: August 25, 2022Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
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Patent number: 11348619Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, helium concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.Type: GrantFiled: February 16, 2021Date of Patent: May 31, 2022Assignee: Western Digital Technologies, Inc.Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
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Publication number: 20220020399Abstract: A hard disk drive (HDD) includes an enclosure base, a first cover coupled to the base, and two separate gasket seals composed of different materials and configured to seal the interface between the first cover and the base. One gasket seal is composed of a material having a low permeability to helium or another lighter-than-air gas contained within the HDD, and the other gasket seal is composed of material having a low water vapor or moisture transmission. By using two separate independent gaskets which have different attributes, helium concentration is kept high and humidity is kept low during manufacturing testing, prior to affixing a hermetic second cover over the first cover, and degradation of HDD performance due to change of flying height is ultimately avoided.Type: ApplicationFiled: February 16, 2021Publication date: January 20, 2022Inventors: Yuichi Arai, Miki Namihisa, Hiroshi Matsuda, Takashi Tomita
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Patent number: 11209905Abstract: A panel includes a vibration plate having a generally rectangular shape; and a piezoelectric actuator that is provided on a main surface of the vibration plate and causes the vibration plate to vibrate, in which the vibration plate is configured such that a length x in mm of a long side of the vibration plate and logarithmic decrement y of the vibration plate satisfy Expression 1 below: y?32.6x?1 ??(Expression 1).Type: GrantFiled: August 12, 2020Date of Patent: December 28, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Hiroshi Hamada, Yukihiro Matsui, Takashi Tomita
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Patent number: 11199259Abstract: A control device supplies electric power to a shift-by-wire system to a sub power supply until starting of an engine by automatic start control is completed after the engine has been stopped by automatic stop control. The control device performs a stopped range switching process in response to outputting of a signal for requiring switching of a shift range from a selection device when electric power is supplied from the sub power supply to the shift-by-wire system. In the stopped range switching process, the shift range is switched to a selected shift range when a voltage of the sub power supply is equal to or greater than a threshold value. On the other hand, the shift range is switched to a neutral range when the voltage of the sub power supply is less than the threshold value.Type: GrantFiled: December 28, 2020Date of Patent: December 14, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takashi Tomita
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Publication number: 20210270363Abstract: A control device supplies electric power to a shift-by-wire system to a sub power supply until starting of an engine by automatic start control is completed after the engine has been stopped by automatic stop control. The control device performs a stopped range switching process in response to outputting of a signal for requiring switching of a shift range from a selection device when electric power is supplied from the sub power supply to the shift-by-wire system. In the stopped range switching process, the shift range is switched to a selected shift range when a voltage of the sub power supply is equal to or greater than a threshold value. On the other hand, the shift range is switched to a neutral range when the voltage of the sub power supply is less than the threshold value.Type: ApplicationFiled: December 28, 2020Publication date: September 2, 2021Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takashi TOMITA
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Patent number: 11059488Abstract: A control device of a vehicle including an engine, a power transmission device, a shift operation device, and a switching device includes: a shift-switching control portion outputting the control command signal when it is determined that the shift switching is permitted, and not outputting the control command signal when it is determined that the shift switching is prohibited, at the time of a shift switching operation; and an engine-starting control portion outputting a first signal causing the shift-switching control portion to determine that the shift switching is prohibited and initiating starting of the engine after determining that the shift switching is not being performed when it is determined that the shift switching is permitted at the time of an engine starting operation performed by the driver for starting the engine, and immediately initiating the engine when it is determined that the shift switching is prohibited.Type: GrantFiled: March 17, 2020Date of Patent: July 13, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takashi Tomita
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Patent number: 10974775Abstract: An aerodynamic cover of a suspension device of a vehicle includes an upper horizontal portion that is located on an upper side of the arm member and extends in a horizontal direction, a lower horizontal portion that is located under the arm member and extends in the horizontal direction, an engaging portion that is provided on one of the upper and lower horizontal portions and engaged with the arm member, and a bolt receiving portion that is provided on the other horizontal portion and bolted to the arm member. The engaging portion includes an arm portion extending in the horizontal direction, and a claw portion provided on a distal side of the arm portion and engaged with the arm member. A rib provided on the arm portion extends in a direction of extension of the arm portion, and protrudes in a vertical direction with respect to the arm portion.Type: GrantFiled: August 5, 2019Date of Patent: April 13, 2021Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shunsuke Kitashiba, Yasuyuki Yokozawa, Takashi Tomita, Seiichiro Kawanishi
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Publication number: 20210048888Abstract: A panel includes a vibration plate having a generally rectangular shape; and a piezoelectric actuator that is provided on a main surface of the vibration plate and causes the vibration plate to vibrate, in which the vibration plate is configured such that a length x in mm of a long side of the vibration plate and logarithmic decrement y of the vibration plate satisfy Expression 1 below: y?32.6x?1 ??(Expression 1).Type: ApplicationFiled: August 12, 2020Publication date: February 18, 2021Applicant: TAIYO YUDEN CO., LTD.Inventors: Hiroshi HAMADA, Yukihiro MATSUI, Takashi TOMITA
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Patent number: 10897674Abstract: An electroacoustic transducer includes a piezoelectric speaker and a housing. The piezoelectric speaker has: a first vibration plate with a periphery; a piezoelectric element placed on at least one face of the first vibration plate; and multiple openings that are provided around the piezoelectric element and penetrate through the first vibration plate in its thickness direction that is a first axis direction. The housing has: a supporting part that directly or indirectly supports the periphery; and a sound introduction port that faces the piezoelectric speaker in the first axis direction. The sound introduction port is provided at a position where it does not overlap, in the first axis direction, a first opening having the largest open area among the multiple openings. The electroacoustic transducer can improve the acoustic characteristics of a piezoelectric speaker.Type: GrantFiled: February 22, 2018Date of Patent: January 19, 2021Assignee: TAIYO YUDEN CO., LTD.Inventors: Shigeo Ishii, Hiroshi Hamada, Yutaka Doshida, Takashi Tomita
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Publication number: 20200298862Abstract: A control device of a vehicle including an engine, a power transmission device, a shift operation device, and a switching device includes: a shift-switching control portion outputting the control command signal when it is determined that the shift switching is permitted, and not outputting the control command signal when it is determined that the shift switching is prohibited, at the time of a shift switching operation; and an engine-starting control portion outputting a first signal causing the shift-switching control portion to determine that the shift switching is prohibited and initiating starting of the engine after determining that the shift switching is not being performed when it is determined that the shift switching is permitted at the time of an engine starting operation performed by the driver for starting the engine, and immediately initiating the engine when it is determined that the shift switching is prohibited.Type: ApplicationFiled: March 17, 2020Publication date: September 24, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Takashi Tomita
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Patent number: 10773300Abstract: A casting apparatus includes: a mold including a first mold segment and a second mold segment; and a transfer device that is configured to transfer a core to the first mold segment and place the core in the first mold segment, and to receive and transfer a casting. The transfer device includes a support part, a robot arm, a core grasping mechanism being provided on the support part, and a casting receiving part being provided on the support part. The transfer device is configured such that the robot arm moves the core grasping mechanism so as to place the core in the first mold segment, and moves the casting receiving part so as to receive the casting by the casting receiving part.Type: GrantFiled: January 23, 2018Date of Patent: September 15, 2020Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takashi Tomita, Tadashi Nakahashi, Makoto Kikuchi