Patents by Inventor Akio Kawai
Akio Kawai 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: 20230268626Abstract: This embodiment includes an electrode assembly; a case for housing the electrode assembly; and an external terminal made of a metal and disposed on the case, in which the external terminal includes: a flange extending along an outer surface of the case; and a shaft extending from the flange to pass through the case and be conductive with the electrode assembly, the flange is made of a clad material having a plurality of metal layers layered in a passing direction of the shaft, each adjacent ones of the plurality of metal layers are made of different metals in kind, and one of the plurality of metal layers of the flange at one end in the passing direction is made of the same metal in kind as the metal of the shaft, and is welded to the shaft.Type: ApplicationFiled: June 15, 2021Publication date: August 24, 2023Inventors: Jun NAKAMURA, Akio Kawai, Hideyo TOGASHl, Mitsuhiro NAKATANI, Toshihiro TAKADA, Hiroshi INUKAl, Hiroshi ONIZUKA, Naoya HAMAGUCHI
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Publication number: 20230223623Abstract: An energy storage device includes: an electrode assembly; a case that accommodates the electrode assembly; and an external terminal made of metal and disposed in the case, in which the external terminal includes: a flange portion spreading along the case outside the case; and a shaft portion extending from the flange portion, penetrating the case, and electrically connected to the electrode assembly, in which the flange portion includes a plurality of metal layers layered in a penetrating direction of the shaft portion.Type: ApplicationFiled: May 13, 2021Publication date: July 13, 2023Inventors: Akio KAWAI, Sho KOZONO
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Publication number: 20230187794Abstract: An energy storage device includes an electrode assembly, a case that houses the electrode assembly, and a metal external terminal disposed in the case, wherein the external terminal includes a flange portion spreading along the case outside the case and a shaft portion extending from the flange portion and penetrating the case, the flange portion is formed of a clad material including a plurality of metal layers stacked in a penetrating direction of the shaft portion, and includes a through hole through which the shaft portion is inserted.Type: ApplicationFiled: May 13, 2021Publication date: June 15, 2023Inventors: Jun NAKAMURA, Akio KAWAI
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Patent number: 11664525Abstract: A method for manufacturing an energy storage device according to one aspect of the present invention includes inserting an electrode assembly into a case while causing an insulating member having a sheet-like shape to follow a surface of the electrode assembly in which electrodes are layered. The insulating member includes a first portion corresponding to a first surface of the electrode assembly in a first direction which is a direction of a short side surface of the case and a thickness direction of the electrode assembly, a second portion corresponding to a first end surface which is an end surface of the electrode assembly in a second direction orthogonal to the first direction, a third portion corresponding to a second surface of the electrode assembly in the first direction, and a first extending portion extending from the first portion.Type: GrantFiled: May 4, 2021Date of Patent: May 30, 2023Assignee: GS Yuasa International Ltd.Inventors: Yoshiyuki Honda, Akio Kawai
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Publication number: 20220311399Abstract: A preamplifier amplifies signals input to first and second input terminals. A first switching circuit receives first and second input signals and outputs those to the first and second input terminals. A switched capacitor circuit samples two signals amplified by the preamplifier. Differential signals sampled by the switched capacitor circuit are respectively input to third and fourth input terminals of an integration circuit, and the integration circuit outputs differential signals obtained by those input signals to first and second output terminals. A second switching circuit switches a connection relationship between the switched capacitor circuit and the integration circuit. Each time the cycle changes, the first and second switching circuits switch the connection relationships to cause the signals amplified by the preamplifier to be sampled by double correlation sampling.Type: ApplicationFiled: March 18, 2022Publication date: September 29, 2022Inventors: Shu Hirata, Tomohiro Tahara, Akio Kawai, Shun Mugikura
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Publication number: 20220307866Abstract: A preamplifier amplifies signals input to first and second input terminals. A first switching circuit receives first and second input signals and respectively outputs those signals to the first and second input terminals. A switched capacitor circuit samples two signals amplified by the preamplifier. An integration circuit includes a fully differential operational amplifier outputting amplifying differential signals input between third and fourth input terminals between second and first output terminals, and first and second integration capacitors. A second switching circuit switches a connection relationship between the switched capacitor circuit, and the first and second integration capacitors. A third switching circuit switches a connection relationship between the first and second integration capacitors, and third and fourth output terminals.Type: ApplicationFiled: March 18, 2022Publication date: September 29, 2022Inventors: Shu Hirata, Tomohiro Tahara, Akio Kawai, Shun Mugikura
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Patent number: 11340095Abstract: An object is to respectively excite transmission coils with different voltages using a single power supply with low power consumption in an electromagnetic induction type encoder. A detection head of an encoder includes a voltage adjustment circuit and a plurality of excitation circuits. The excitation circuit includes a resonant circuit that includes a driving capacitor and a transmission coil connected in series and generates an alternate-current magnetic field inducing currents in scale coils disposed in a plurality of scale tracks on a scale by connecting both ends of the resonant circuit in a state in which the driving capacitor is charged. The voltage adjustment circuit includes a first transformer capacitor and controls a charging voltage of the driving capacitor in a single excitation circuit using the charged first transformer capacitor.Type: GrantFiled: October 22, 2020Date of Patent: May 24, 2022Assignee: MITUTOYO CORPORATIONInventors: Osamu Kawatoko, Toshihiro Hasegawa, Tomohiro Tahara, Akio Kawai
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Publication number: 20210351430Abstract: A method for manufacturing an energy storage device according to one aspect of the present invention includes inserting an electrode assembly into a case while causing an insulating member having a sheet-like shape to follow a surface of the electrode assembly in which electrodes are layered. The insulating member includes a first portion corresponding to a first surface of the electrode assembly in a first direction which is a direction of a short side surface of the case and a thickness direction of the electrode assembly, a second portion corresponding to a first end surface which is an end surface of the electrode assembly in a second direction orthogonal to the first direction, a third portion corresponding to a second surface of the electrode assembly in the first direction, and a first extending portion extending from the first portion.Type: ApplicationFiled: May 4, 2021Publication date: November 11, 2021Inventors: Yoshiyuki HONDA, Akio KAWAI
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Publication number: 20210131831Abstract: An object is to respectively excite transmission coils with different voltages using a single power supply with low power consumption in an electromagnetic induction type encoder. A detection head of an encoder includes a voltage adjustment circuit and a plurality of excitation circuits. The excitation circuit includes a resonant circuit that includes a driving capacitor and a transmission coil connected in series and generates an alternate-current magnetic field inducing currents in scale coils disposed in a plurality of scale tracks on a scale by connecting both ends of the resonant circuit in a state in which the driving capacitor is charged. The voltage adjustment circuit includes a first transformer capacitor and controls a charging voltage of the driving capacitor in a single excitation circuit using the charged first transformer capacitor.Type: ApplicationFiled: October 22, 2020Publication date: May 6, 2021Inventors: Osamu Kawatoko, Toshihiro Hasegawa, Tomohiro Tahara, Akio Kawai
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Patent number: 10907996Abstract: A measurement apparatus includes: a light source that emits light; a scale that has a plurality of tracks whose patterns are different from each other, the tracks passing at least a part of lights emitted by the light source; a light receiving part that has a plurality of light receiving elements that each output an optical signal corresponding to strength of light received through the tracks; and a signal generation part that generates a serial signal in which a plurality of the optical signals are time-division multiplexed and sends the generated serial signal.Type: GrantFiled: January 4, 2019Date of Patent: February 2, 2021Assignee: MITUTOYO CORPORATIONInventors: Hirokazu Kobayashi, Akio Kawai
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Patent number: 10720935Abstract: An analog-to-digital converter includes a cycle processing unit and a control unit. The cycle processing unit converts an analog input signal into a digital signal having a plurality of bits by performing a plurality of cycle processing on the analog input signal to acquire values of each bit in order from a higher-order bit to a lower-order bit. The control unit controls the cycle processing unit such that a period of the cycle processing is shortened according to a cycled number of the cycle processing.Type: GrantFiled: June 13, 2019Date of Patent: July 21, 2020Assignee: MITUTOYO CORPORATIONInventors: Akio Kawai, Shun Mugikura
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Publication number: 20200007139Abstract: An analog-to-digital converter includes a cycle processing unit and a control unit. The cycle processing unit converts an analog input signal into a digital signal having a plurality of bits by performing a plurality of cycle processing on the analog input signal to acquire values of each bit in order from a higher-order bit to a lower-order bit. The control unit controls the cycle processing unit such that a period of the cycle processing is shortened according to a cycled number of the cycle processing.Type: ApplicationFiled: June 13, 2019Publication date: January 2, 2020Applicant: MITUTOYO CORPORATIONInventors: Akio KAWAI, Shun MUGIKURA
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Publication number: 20190219424Abstract: A measurement apparatus includes: a light source that emits light; a scale that has a plurality of tracks whose patterns are different from each other, the tracks passing at least a part of lights emitted by the light source; a light receiving part that has a plurality of light receiving elements that each output an optical signal corresponding to strength of light received through the tracks; and a signal generation part that generates a serial signal in which a plurality of the optical signals are time-division multiplexed and sends the generated serial signal.Type: ApplicationFiled: January 4, 2019Publication date: July 18, 2019Inventors: Hirokazu Kobayashi, Akio Kawai
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Patent number: 9739587Abstract: A semiconductor integrated circuit includes a regulator configured to stabilize a power supply voltage from a solar cell and to output the same, a voltage detection circuit configured to detect the power supply voltage from the solar cell or an output voltage from the regulator, a power-on-reset circuit configured to output a reset signal to an external digital circuit by a voltage detection signal output from the voltage detection circuit, a memory main body configured to write and read data by the power supply voltage from the solar cell or the output voltage from the regulator.Type: GrantFiled: June 18, 2015Date of Patent: August 22, 2017Assignee: MITUTOYO CORPORATIONInventors: Osamu Kawatoko, Akio Kawai
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Publication number: 20150369580Abstract: A semiconductor integrated circuit includes a regulator configured to stabilize a power supply voltage from a solar cell and to output the same, a voltage detection circuit configured to detect the power supply voltage from the solar cell or an output voltage from the regulator, a power-on-reset circuit configured to output a reset signal to an external digital circuit by a voltage detection signal output from the voltage detection circuit, a memory main body configured to write and read data by the power supply voltage from the solar cell or the output voltage from the regulator.Type: ApplicationFiled: June 18, 2015Publication date: December 24, 2015Inventors: Osamu Kawatoko, Akio Kawai
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Publication number: 20050111698Abstract: An aspect of the present invention provides a vehicle surroundings monitoring device that includes an object extracting unit configured to extract objects that emit infrared rays from a photographed infrared image, a pedestrian candidate extracting unit configured to extract pedestrian candidates based on the shape of the images of objects extracted by the object extracting unit, and a structure exclusion processing unit configured to exclude structures from the pedestrian candidates based on the gray levels of the images of the pedestrian candidates.Type: ApplicationFiled: November 16, 2004Publication date: May 26, 2005Inventor: Akio Kawai
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Publication number: 20050074143Abstract: An image of a coupler at a connection target vehicle or an image of an identification marker provided near the coupler captured in advance with a camera, is stored in memory as a template image. A decision is made as to whether or not an image of the view behind a subject vehicle captured with the camera includes a portion matching the template image. If a portion matching the template image is judged to be included in the image of the view behind the subject vehicle, a guide line extending rearward from the coupler at the subject vehicle is drawn and displayed over the image of the view behind the subject vehicle.Type: ApplicationFiled: September 30, 2004Publication date: April 7, 2005Inventor: Akio Kawai
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Patent number: 6091323Abstract: An alarm apparatus for alarming a driver of a vehicle is provided. The alarm apparatus includes a first indicator disposed on a front center console inside the vehicle, a second indicator located in a windshield of the vehicle, a radar unit, a vehicle speed sensor and a controller. In operation, when a distance between the vehicle and the one ahead is less than a first alarm distance, the first indicator is activated to display the alarm. Further, when the distance is less than a second alarm distance smaller than the first alarm distance, the second indicator is activated to display the alarm. Even if the driver does not gaze ahead but the instruments, it is possible for the driver to look at the first indicator activated more frequency than the second indicator, thereafter shift his eyes ahead and finally brake the vehicle after confirming the preceding vehicle with composure.Type: GrantFiled: April 13, 1998Date of Patent: July 18, 2000Assignee: Nissan Motor Co., Ltd.Inventor: Akio Kawai
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Patent number: 5029234Abstract: A system and method for communicating a vehicle with a calling party are disclosed in which even when a communication circuit is interrupted during a data communication of the system with the calling party such as a base station due to a worse circuit condition, the calling from the system to the calling party is carried out without operation of a switch for activating the system to start calling so that the communication with the calling party is restarted. The communication data includes a vehicle identification code (ID information) and/or instantaneous position of the vehicle.Type: GrantFiled: April 21, 1988Date of Patent: July 2, 1991Assignee: Nissan Motor Company, LimitedInventors: Akio Kawai, Yasuhiro Okada, Masaaki Taniguchi, Hiroshi Ueno, Masami Kiyoto
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Patent number: 4639676Abstract: The diagnostic device comprises voltage divider resistors, two comparators, a start switch, a microcomputer, two transistors, and two light emitting diodes. The ignition signal is voltage-divided by the voltage divider resistors, and the result of this voltage division is input into the positive terminals of the comparators. Reference voltages are input to the negative terminals of the comparators which determine how high the inputs to the positive terminals must be for each comparator to have an "H" level output. When the start switch is turned ON the device starts to operate. In the microcomputer, which has a timer function built in, the interrupt terminal (INT) becomes connected to the output terminal of the comparator; the reset terminal (RES) becomes connected to the start switch.Type: GrantFiled: October 18, 1984Date of Patent: January 27, 1987Assignee: Nissan Motor Co., Ltd.Inventors: Akio Kawai, Ken Ito, Hideo Iwamoto