Patents by Inventor Takaaki Tanaka
Takaaki Tanaka 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: 10914876Abstract: The light source device of the projection display apparatus according to the present disclosure includes: solid-state light sources that individually emit blue light, green light, and red light; a plurality of dichroic mirrors that combine the blue light, the green light, and the red light having exited from the solid-state light sources; a first diffusion plate on which the combined light having been combined by the plurality of dichroic mirrors is incident; a dynamic diffusion plate that is disposed at a position at which the combined light having exited from the first diffusion plate converges and starts to diverge.Type: GrantFiled: August 1, 2018Date of Patent: February 9, 2021Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventor: Takaaki Tanaka
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Patent number: 10913121Abstract: An operational control method is provided for a machine tool that includes a plurality of tool holders with a cutting-tool. The machine tool relatively moves the tool holders with respect to a workpiece to process the workpiece. The operational control method includes determining whether an abnormality has occurred in the cutting-tool during a processing or not, determining whether a simultaneous processing in which at least two or more of the tool holders perform the processings to an identical workpiece is being performed or not and whether the cutting-tool having the detected abnormality is the cutting-tool that is performing the simultaneous processing or not when the abnormality is detected, and causing the tool holder with the cutting-tool having the detected abnormality to take an abnormality avoidance operation and another of the tool holders to take a response operation based on a determination result at the determining of the simultaneous processing.Type: GrantFiled: January 29, 2018Date of Patent: February 9, 2021Assignee: Okuma CorporationInventors: Takaaki Tanaka, Ryosuke Sasaki
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Publication number: 20210011365Abstract: A light source device includes a solid-state light source, a dichroic mirror, a first condensing element, a fluorescent plate, a second condensing element, a retardation plate, and a reflection plate. The dichroic mirror separates light from the solid-state light source into first light and second light, and combines blue light and light containing green and red components, the blue light being obtained by converting polarization of the second light, the light containing green and red components being obtained by converting a wavelength of the first light. The first condensing element condenses the first light separated by the dichroic mirror. The fluorescent plate converts the wavelength of the first light condensed by the first condensing element. The second condensing element condenses the second light separated by the dichroic mirror. The retardation plate converts polarization of the second light condensed by the second condensing element.Type: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Inventor: Takaaki TANAKA
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Publication number: 20200392598Abstract: Provided are a high-strength cold-rolled steel sheet that has a tensile strength of 1320 MPa or more, excellent ductility and stretch flangeability, and a low failure rate in a hole expanding test, and a method for manufacturing the same. A high-strength cold-rolled steel sheet comprises a specific composition, wherein a total area ratio of ferrite and bainitic ferrite is 10% to 50%, an area ratio of retained austenite (RA) is more than 15% and 50% or less, an area ratio of tempered martensite is more than 15% and 60% or less, a ratio of RA with an aspect ratio of 0.6 or less is 70% or more, a ratio of RA with an aspect ratio of 0.6 or less in ferrite grain boundaries is 50% or more, and an average KAM value of bcc phase is 1° or less.Type: ApplicationFiled: December 13, 2018Publication date: December 17, 2020Applicant: JFE STEEL CORPORATIONInventors: Takaaki TANAKA, Yuki TOJI
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Publication number: 20200392610Abstract: Provided are a high-strength cold rolled steel sheet that has a tensile strength of 980 MPa or more, excellent ductility, and a low failure rate in a hole expanding test, and a method for manufacturing the same. A high-strength cold rolled steel sheet comprises a predetermined composition, wherein a total area ratio of ferrite and bainitic ferrite is 20% to 80%, an area ratio of retained austenite (RA) is more than 10% and 40% or less, an area ratio of tempered martensite is more than 0% and 50% or less, a ratio of RA with an aspect ratio of 0.5 or less is 75% or more, a ratio of RA with an aspect ratio of 0.5 or less in ferrite grain boundaries is 50% or more, and an average KAM value of bcc phase is 1° or less.Type: ApplicationFiled: December 13, 2018Publication date: December 17, 2020Applicant: JFE STEEL CORPORATIONInventors: Takaaki TANAKA, Yuki TOJI
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Patent number: 10850360Abstract: An information measuring device includes a sensor that obtains information on a phenomenon periodically occurring on an apparatus while being synchronized with the steady repetition of an operation and a control device. The control device associates the obtained information with an operation phase in the operation so as to generate change in the phenomenon in one cycle based on the information obtained during the operation of several times. Meanwhile, an operation cycle where the operation is repeated in the apparatus, a sampling cycle, and a duration where the operation is steadily repeated in the apparatus are included in measurement parameters. The control device calculates an optimum measurement parameter from a relation between the measurement parameters on at least one of the measurement parameters and changes the measurement parameter as a target to the optimum measurement parameter.Type: GrantFiled: July 20, 2017Date of Patent: December 1, 2020Assignee: Okuma CorporationInventor: Takaaki Tanaka
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Patent number: 10838289Abstract: A first light source device includes: a solid-state light source; a condenser element that collects light from the solid-state light source; a retardation plate that converts linearly polarized light into circularly polarized light; and a reflection plate, wherein the retardation plate is disposed at a point of incidence of collected light and divergent light between the condenser element and the reflection plate. A second light source device includes: a solid-state light source; a retardation plate that changes a polarization direction of light from the solid-state light source to make a ratio of polarization and s-polarization components of the light constant under control; and a dichroic mirror that separates the light from the retardation according to the polarization direction, wherein the retardation plate is disposed at a point of incidence of one of collected light and divergent light between the solid-state light source and the dichroic mirror.Type: GrantFiled: June 6, 2017Date of Patent: November 17, 2020Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Takaaki Tanaka, Manabu Okuno
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Patent number: 10819961Abstract: A light source apparatus includes a plurality of laser light sources configured to emit color light rays having multiple wavelength bands. The light source apparatus further includes a plurality of dichroic mirrors configured to combine the color light rays and output combined color light rays; and a dynamic diffusion plate configured to diffuse incident light rays from the plurality of dichroic mirrors so as to remove speckles specific to laser beams. One of the plurality of dichroic mirrors is configured to reflect blue light, and each of the plurality of laser light sources includes a blue laser light source. The blue laser light source is configured to generate a P-polarized short-wavelength-band laser beam, and an S-polarized long-wavelength-band laser beam having a wavelength longer than a wavelength of the P-polarized short-wavelength-band laser beam.Type: GrantFiled: June 21, 2019Date of Patent: October 27, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takaaki Tanaka
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Publication number: 20200333697Abstract: A light source device includes a laser optical system, a fluorescence optical system, and a light combiner combining first and second outgoing lights from the laser optical system and the fluorescent optical system. The laser optical system includes first laser optical sources emitting a plurality of outgoing lights respectively, the plurality of outgoing lights being blue, green, and red lights, or blue and red lights; a first dichroic mirror combining the plurality of outgoing lights from the first laser optical sources, and a diffusion plate reducing speckle noise and an uneven luminance of each of the plurality of outgoing lights. The fluorescence optical system includes a second laser light source, and a phosphor plate emitting, as the second outgoing light, a fluorescent light containing green and red lights by being excited by an outgoing light from the second laser light source. The light combiner includes a second dichroic mirror.Type: ApplicationFiled: April 8, 2020Publication date: October 22, 2020Inventor: Takaaki TANAKA
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Publication number: 20200319541Abstract: A light source device includes: first and second light source elements which respectively generate blue and red lights; a first phase difference plate which controls a polarization component of the blue light; a first light combiner which combines the blue and the red lights, the blue light entering from the first phase difference plate; a second light combiner which the blue and the red light enter and which divides the blue light into first and second polarization components; a phosphor plate which generates yellow light by being excited by the first polarization component; and a second phase difference plate which controls polarization of the second polarization component and the red light. The second polarization component and the red light enter a reflective plate from the second phase difference plate, are reflected, enter the second light combiner again via the second phase difference plate, and are combined with the yellow light.Type: ApplicationFiled: March 25, 2020Publication date: October 8, 2020Inventor: Takaaki TANAKA
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Publication number: 20200201321Abstract: An automatic driving system includes a control device that controls automatic driving of a vehicle, and a storage device that contains external environment information indicating an external environment of the vehicle. A driving transition zone is a zone in which a driver of the vehicle takes over at least a part of driving of the vehicle, from the control device. A termination target velocity is a target velocity of the vehicle at an end point of the driving transition zone. The control device variably sets the termination target velocity, depending on the external environment at the end point or the external environment surrounding the end point. Then, the control device controls the velocity of the vehicle in the driving transition zone, such that the velocity of the vehicle at the end point is the termination target velocity.Type: ApplicationFiled: October 15, 2019Publication date: June 25, 2020Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takaaki TANAKA, Kenichiro AOKI, Masayuki KATOH
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Publication number: 20200189541Abstract: A hydraulic oil resupply device (40) is provided between first accumulators (15F, 15R) in a manual braking operation circuit (11) and a second accumulator (25) in an automatic brake circuit (24). The hydraulic oil resupply device (40) resupplies hydraulic oil accumulated in the second accumulator (25) to the first accumulators (15F, 15R) at the operating of a manual braking operation by an operator. This configuration can suppress a rising speed of a brake pressure at the manual operation braking from being slow. Accordingly, in a vehicular brake system, it is possible to enhance a braking capability by the manual braking operation and improve the reliability.Type: ApplicationFiled: September 26, 2017Publication date: June 18, 2020Inventors: Takaaki TANAKA, Takanobu IKARI, Yasutaka TSURUGA, Takayuki SATOU, Takashi SASAKI
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Publication number: 20200180588Abstract: A power regeneration system of a work vehicle includes: a first generator (12) and a second generator (31) that are driven by an engine (11); a first electric circuit (C1) for supplying electric power to traveling motors (10L, 10R); a second electric circuit (C2) for supplying electric power to an auxiliary device (35); a voltage step down converter (21) providing electric power from the first electric circuit to the second electric circuit; and a controller (51) that determines whether a travel mode of the work vehicle is a powering mode or a regeneration mode in order to control driving of the voltage step down converter. If the travel mode is the regeneration mode, the controller provides the regenerative power from the first electric circuit through the voltage step down converter to the second electric circuit, in order to drive the auxiliary device with the regenerative power.Type: ApplicationFiled: June 4, 2018Publication date: June 11, 2020Inventors: Shintarou TANAKA, Masatsugu ARAI, Naoki FUKUDA, Takaaki TANAKA, Yukiaki SHIMIZU
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Patent number: 10634982Abstract: The light source device according to the present disclosure includes: a solid-state light source that emits red light having a luminous flux; a solid-state light source that emits green light having a luminous flux; a solid-state light source that emits blue light having a luminous flux; a dichroic mirror that combines, into combined light, the red light, the green light, and the blue light having exited from the respective solid-state light sources; a dynamic diffusion plate on which the combined light having exited from the dichroic mirror is incident; and a luminous-flux splitting element that splits the luminous flux that having exited from the solid-state light sources for emitting at least one of the red light, the green light, and the blue light.Type: GrantFiled: August 8, 2018Date of Patent: April 28, 2020Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Takaaki Tanaka
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Patent number: 10583743Abstract: In a regenerative braking device of a dump truck comprising an engine, a first generator and a second generator driven by the engine, at least one travel motor driven by generated electric power of the first generator and at least one fan motor to which generated electric power of the second generator is inputted via a first rectifier circuit, the regenerative braking device comprises: a resistive element to which regenerating electric power from the at least one travel motor in regenerative braking is supplied and which is cooled by at least one fan driven by the at least one fan motor and converts electric energy into heat energy and dissipates heat; and a DC/DC converter that inputs a part of the regenerating electric power which is supplied to the resistive element to an output line of the first rectifier circuit via a second rectifier circuit.Type: GrantFiled: September 8, 2016Date of Patent: March 10, 2020Assignee: Hitachi Construction Machinery Co., Ltd.Inventors: Tomonori Takada, Takanobu Ikari, Takashi Ikimi, Akihiro Nakamura, Masatsugu Arai, Naoki Fukuda, Takaaki Tanaka
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Publication number: 20200040421Abstract: A high strength cold rolled steel sheet has a composition which contains, in terms of mass %, more than 0.15% and not more than 0.45% of C, 0.50-2.50% of Si, 1.50-3.00% of Mn, not more than 0.050% of P, not more than 0.0100% of S, 0.010-0.100% of Al and not more than 0.0100% of N, with the remainder including Fe and unavoidable impurities, has a total content of ferrite and bainitic ferrite of 20-80%, has a retained austenite content of more than 10% and not more than 40%, has a martensite content of more than 0% and not more than 50%, and is such that the proportion of retained austenite that has an aspect ratio of not more than 0.5 is not less than 75%, and the proportion of retained austenite having an aspect ratio of not more than 0.5 that is present at Bain group boundaries is not less than 50%.Type: ApplicationFiled: April 2, 2018Publication date: February 6, 2020Inventors: Takaaki Tanaka, Yuki Toji
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Publication number: 20200017096Abstract: To provide a power regeneration system for a working vehicle that can effectively use a regenerative electric energy. A first electric circuit for supplying an electric power generated by the first generator to a traveling motor, a voltage detector for detecting an actual voltage of the first electric circuit, a second electric circuit for supplying an electric power generated by a second generator to an auxiliary device, a step-down device connected to the first electric circuit and the second electric circuit, and a controller are provided. The controller estimates the voltage of the first electric circuit after a predetermined time has elapsed from the present time, based on information on a traveling state of a work vehicle and the actual voltage detected by the voltage detector, and outputs a drive command to the step-down device when the estimated voltage is equal to or more than a threshold.Type: ApplicationFiled: February 23, 2018Publication date: January 16, 2020Inventors: Naoki FUKUDA, Masatsugu ARAI, Yukiaki SHIMIZU, Takaaki TANAKA, Shintarou TANAKA
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Publication number: 20200010060Abstract: An automatic brake subsystem (24) includes second accumulators (25F, 25R), a front second line (28) and a rear second line (29), second brake valves (30F, 30R), a first solenoid switching valve (32), first shuttle valves (33F, 33R), and a controller 37. A second solenoid switching valve (34F) and a pressure sensor (35F) are provided in the front second line (28), and a second solenoid switching valve (34R) and a pressure sensor (35R) are provided in the rear second line (29). In a case where it is determined that each of the second brake valve (30F, 30R) is not performing normally based upon a pressure of a hydraulic fluid detected by each of the pressure sensors (35F, 35R) and an operating signal supplied to the first solenoid switching valve (32) or each of the second brake valves (30F, 30R), a controller 37 performs control to switch each of the second solenoid switching valves (34F, 34R).Type: ApplicationFiled: July 27, 2018Publication date: January 9, 2020Inventors: Takaaki TANAKA, Takanobu IKARI, Yasutaka TSURUGA, Takayuki SATO, Takashi SASAKI
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Publication number: 20190394429Abstract: A light source apparatus is provided to include a plurality of laser light sources that emits color light rays having multiple wavelength bands. The light source apparatus further includes a plurality of dichroic mirrors that combines the color light rays and outputs a combined color light rays; and a dynamic diffusion plate that diffuses incident light rays from the plurality of dichroic mirrors so as to remove speckles specific to laser beams. One of the dichroic mirrors is a dichroic mirror that reflects blue light, and each of the plurality of laser light sources includes a blue laser light source. The blue laser light source generates a P-polarized short-wavelength-band laser beam, and an S-polarized long-wavelength-band laser beam having a wavelength longer than a wavelength of the short-wavelength-band laser beam.Type: ApplicationFiled: June 21, 2019Publication date: December 26, 2019Inventor: Takaaki TANAKA
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Publication number: 20190270453Abstract: The vehicle control device recognizes an object around an own-vehicle and acquires information related to a road shape ahead of the own-vehicle. The vehicle control device detects, when a road shape prompting cut-in to an own-lane is acquired, a monitoring target vehicle likely to be prompted to cut into the own-lane among the recognized objects. The vehicle control device executes an evasive preparation for cut-in of the monitoring target vehicle when the monitoring target vehicle is detected. The vehicle control device executes an evasive action to avoid interference between the monitoring target vehicle and the own-vehicle when a predetermined motion from which cut-in of the monitoring target vehicle to the own-lane is expected is sensed after the evasive preparation is executed.Type: ApplicationFiled: February 28, 2019Publication date: September 5, 2019Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, DENSO CORPORATIONInventors: Yoichiro Katsura, Yoshinori Watanabe, Takaaki Tanaka, Tadashi Omachi