Patents by Inventor Hirokazu Kawai
Hirokazu 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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Patent number: 11642735Abstract: A power supply system includes multiple power supply devices including a first power supply device and a second power supply device that are connected in common to a load. The first power supply device calculates control information for controlling voltage or current to be output to the load and source information for obtaining the control information, and controls the output to the load based on the calculated control information while transmitting the source information to the second power supply device. The second power supply device receives the source information transmitted from the first power supply device, calculates control information based on the received source information, and controls the output to the load while detecting current to be output from itself to the load and transmitting current information to the first power supply device.Type: GrantFiled: April 16, 2018Date of Patent: May 9, 2023Assignee: DAIHEN CorporationInventors: Hirokazu Kawai, Songjie Hou, Futoshi Nishisaka, Haruhiko Manabe
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Patent number: 11370052Abstract: An arc welding system of a consumable electrode type comprises: a wire feeding device that feeds welding wire from a wire feeding source to a welding torch; and a power supply device that supplies electric power between the welding wire fed to the welding torch and a base material, the system being configured to weld the base material by arc generated by the supplied electric power. The wire feeding device is provided with: an intermediate wire feeding source that is disposed between the wire feeding source and the welding torch and is configured to temporarily accommodate the welding wire fed from the wire feeding source and to feed the accommodated welding wire to the welding torch; a pull-out feeding part that feeds the welding wire at the wire feeding source to the intermediate wire feeding source; and a push-out feeding part that feeds the welding wire accommodated in the intermediate wire feeding source to the welding torch.Type: GrantFiled: March 9, 2017Date of Patent: June 28, 2022Assignee: DAIHEN CorporationInventors: Masahiro Inoue, Yukiya Morita, Hisao Miyahara, Hirokazu Kawai, Songjie Hou, Hayato Baba, Hideo Shiozaki, Tetsuo Era, Tomoyuki Ueyama
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Patent number: 11213908Abstract: The wire feeding device that feeds welding wire W from the wire source to the welding torch is disposed between the wire source and the welding torch and is configured to temporarily accommodate the welding wire W fed from the wire source and to feed the accommodated welding wire W to the welding torch. In the case where feeding of welding wire W is abnormally stopped, if the acceptance unit accepts instructions for increasing or decreasing, the wire feeding device controls the speed of feeding welding wire W fed by the first feeding part or the second feeding part so that a difference is generated in the feeding speed of the first feeding part and the second feeding part and the accommodated amount of welding wire W is in a range from the lower limit of normal to an upper limit of normal.Type: GrantFiled: January 17, 2019Date of Patent: January 4, 2022Assignee: DAIHEN CorporationInventors: Hirokazu Kawai, Futoshi Nishisaka, Haruhiko Manabe, Kazutoshi Nagami, Masahiro Inoue, Hisao Miyahara, Akio Yoshinaga
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Patent number: 11045893Abstract: A power supply system includes multiple power supply devices including a first power supply device and a second power supply device that are connected in common to a load. The first power supply device calculates control information for controlling voltage or current to be output to the load and controls the output to the load based on the calculated control information while transmitting the control information to the second power supply device. The second power supply device receives the control information and controls the output to the load based on the received control information while detecting current to be output from its own device to the load and transmitting current information to the first power supply device. The first power supply device receives the current information transmitted from the second power supply device and calculates control information based on the received current information and the current and voltage detected by its own device.Type: GrantFiled: May 23, 2017Date of Patent: June 29, 2021Assignee: DAIHEN CorporationInventors: Hirokazu Kawai, Songjie Hou, Hideo Shiozaki, Haruhiko Manabe, Satoru Hata, Hiroyasu Mondori, Kazuki Yoshida
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Publication number: 20200122265Abstract: A power supply system includes multiple power supply devices including a first power supply device and a second power supply device that are connected in common to a load. The first power supply device calculates control information for controlling voltage or current to be output to the load and source information for obtaining the control information, and controls the output to the load based on the calculated control information while transmitting the source information to the second power supply device. The second power supply device receives the source information transmitted from the first power supply device, calculates control information based on the received source information, and controls the output to the load while detecting current to be output from itself to the load and transmitting current information to the first power supply device.Type: ApplicationFiled: April 16, 2018Publication date: April 23, 2020Inventors: Hirokazu Kawai, Songjie Hou, Futoshi Nishisaka, Haruhiko Manabe
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Patent number: 10610947Abstract: A power supply system includes multiple power supply devices connected in common to a load. A first power supply device calculates control information for controlling voltage or current to be output to the load and controls the output to the load based on the calculated control information while transmitting the control information to a second power supply device. The second power supply device receives the control information transmitted from the first power supply device and control the output to the load based on the received control information while detecting current to be output from its own device to the load and transmitting current information to the first power supply device. The first power supply device receives the current information transmitted from the second power supply device and calculate control information based on the received current information and the current and voltage detected by its own device.Type: GrantFiled: December 29, 2016Date of Patent: April 7, 2020Assignee: DAIHEN CorporationInventors: Hirokazu Kawai, Songjie Hou, Hideo Shiozaki, Haruhiko Manabe, Satoru Hata, Hiroyasu Mondori, Futoshi Nishisaka, Takanori Onishi
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Publication number: 20190224772Abstract: The wire feeding device that feeds welding wire W from the wire source to the welding torch is disposed between the wire source and the welding torch and is configured to temporarily accommodate the welding wire W fed from the wire source and to feed the accommodated welding wire W to the welding torch. In the case where feeding of welding wire W is abnormally stopped, if the acceptance unit accepts instructions for increasing or decreasing, the wire feeding device controls the speed of feeding welding wire W fed by the first feeding part or the second feeding part so that a difference is generated in the feeding speed of the first feeding part and the second feeding part and the accommodated amount of welding wire W is in a range from the lower limit of normal to an upper limit of normal.Type: ApplicationFiled: January 17, 2019Publication date: July 25, 2019Inventors: Hirokazu Kawai, Futoshi Nishisaka, Haruhiko Manabe, Kazutoshi Nagami, Masahiro Inoue, Hisao Miyahara, Akio Yoshinaga
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Publication number: 20190105724Abstract: A power supply system includes multiple power supply devices including a first power supply device and a second power supply device that are connected in common to a load. The first power supply device calculates control information for controlling voltage or current to be output to the load and controls the output to the load based on the calculated control information while transmitting the control information to the second power supply device. The second power supply device receives the control information and controls the output to the load based on the received control information while detecting current to be output from its own device to the load and transmitting current information to the first power supply device. The first power supply device receives the current information transmitted from the second power supply device and calculates control information based on the received current information and the current and voltage detected by its own device.Type: ApplicationFiled: May 23, 2017Publication date: April 11, 2019Inventors: Hirokazu Kawai, Songjie Hou, Hideo Shiozaki, Haruhiko Manabe, Satoru Hata, Hiroyasu Mondori, Kazuki Yoshida
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Publication number: 20190039163Abstract: A power supply system includes multiple power supply devices connected in common to a load. A first power supply device calculates control information for controlling voltage or current to be output to the load and controls the output to the load based on the calculated control information while transmitting the control information to a second power supply device. The second power supply device receives the control information transmitted from the first power supply device and control the output to the load based on the received control information while detecting current to be output from its own device to the load and transmitting current information to the first power supply device. The first power supply device receives the current information transmitted from the second power supply device and calculate control information based on the received current information and the current and voltage detected by its own device.Type: ApplicationFiled: December 29, 2016Publication date: February 7, 2019Inventors: Hirokazu KAWAI, Songjie HOU, Hideo SHIOZAKI, Haruhiko MANABE, Satoru HATA, Hiroyasu MONDORI, Futoshi NISHISAKA, Takanori ONISHI
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Publication number: 20190015922Abstract: An arc welding system of a consumable electrode type comprises: a wire feeding device that feeds welding wire from a wire feeding source to a welding torch; and a power supply device that supplies electric power between the welding wire fed to the welding torch and a base material, the system being configured to weld the base material by arc generated by the supplied electric power. The wire feeding device is provided with: an intermediate wire feeding source that is disposed between the wire feeding source and the welding torch and is configured to temporarily accommodate the welding wire fed from the wire feeding source and to feed the accommodated welding wire to the welding torch; a pull-out feeding part that feeds the welding wire at the wire feeding source to the intermediate wire feeding source; and a push-out feeding part that feeds the welding wire accommodated in the intermediate wire feeding source to the welding torch.Type: ApplicationFiled: March 9, 2017Publication date: January 17, 2019Inventors: Masahiro Inoue, Yukiya Morita, Hisao Miyahara, Hirokazu Kawai, Songjie Hou, Hayato Baba, Hideo Shiozaki, Tetsuo Era, Tomoyuki Ueyama
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Patent number: 8674702Abstract: A lithium-ion secondary battery includes an aluminum case, an electrolytic solution, a positive plate, a negative plate, a positive terminal, a negative terminal, and voltage sensors. The positive terminal and the negative terminal project to the outside of the case while being insulated from the case. The voltage sensor is connected between the case and the positive terminal and detects the potential of the positive terminal with respect to a potential VR of the case. The voltage sensor is connected between the case and the negative terminal and detects the potential of the negative terminal with respect to the potential VR of the case. From the detected results, the states of the positive plate and the negative plate are separately detected.Type: GrantFiled: September 16, 2008Date of Patent: March 18, 2014Assignees: Toyota Jidosha Kabushiki Kaisha, Panasonic EV Energy Co., Ltd.Inventors: Hirokazu Kawai, Yuichi Ibi, Kunio Kanamaru
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Patent number: 8142919Abstract: A battery pack apparatus including at least one battery assembly, a plurality of medium feeding parts for adjusting temperatures of the battery assembly, at least one temperature detector, a storage unit, and a controller. The storage unit stores a relation between a temperature of the battery assembly and a revolution level of the medium feeding parts. The controller reads out a revolution level corresponding to the detected temperature of the battery assembly from the storage unit, and allocates the revolution level to the medium feeding parts. The controller changes the value of the revolution levels allocated to the respective medium feeding parts based on the allocated revolution levels so that any one of the revolution levels of the plurality of the medium feeding parts is different from the other revolution levels thereof, and controls the plurality of medium feeding parts at changed revolution levels.Type: GrantFiled: April 25, 2006Date of Patent: March 27, 2012Assignee: Panasonic EV Energy Co., Ltd.Inventors: Hirokazu Kawai, Takaki Kobayashi, Jun Okuda
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Publication number: 20110177264Abstract: A web (12) has resin coat layers (46, 47) on both surfaces of a base material (45), and one of the resin coat layer (47) is covered with an ink receiving layer (48). The web (12) is slit into narrow recording papers (14) by a slitter (13). This slitter (13) includes an upper rotary blade (21) having a sharp cutting edge, and a lower rotary blade (19) having a support (61) for the ink receiving layer (48) . After the slitting with the slitter (13), a cut face has a cross section in which one of the base material (45), the resin coat layer (47) and the ink receiving layer (47) projects outward relative to the resin coat layer (46).Type: ApplicationFiled: September 18, 2009Publication date: July 21, 2011Applicant: FUJIFILM CORPORATIONInventor: Hirokazu Kawai
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Publication number: 20100308834Abstract: A lithium-ion secondary battery includes an aluminum case, an electrolytic solution, a positive plate, a negative plate, a positive terminal, a negative terminal, and voltage sensors. The positive terminal and the negative terminal project to the outside of the case while being insulated from the case. The voltage sensor is connected between the case and the positive terminal and detects the potential of the positive terminal with respect to a potential VR of the case. The voltage sensor is connected between the case and the negative terminal and detects the potential of the negative terminal with respect to the potential VR of the case. From the detected results, the states of the positive plate and the negative plate are separately detected.Type: ApplicationFiled: September 16, 2008Publication date: December 9, 2010Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, PANASONIC EV ENERGY CO., LTD.Inventors: Hirokazu Kawai, Yuichi Ibi, Kunio Kanamaru
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Patent number: 7713580Abstract: The invention relates to a manufacturing method of an image recording medium wherein during the process of cutting a long roll body of the medium into sheet like product the curl tendency, a cause of poor printer feedability, is removed, and at the same time the generation of cracking in a recording layer is suppressed. In the manufacturing method a web of a long roll body, a sheet like material of a paper substrate with thermoplastic resin layers formed on both surfaces one of which also has a recording layer with the long roll body wound such that this recording layer surface is on the outside, is unwound into a cutting device whilst at the same time a straightening element of a roller of diameter between 8 mm and 16 mm is pressed against the side of the recording layer with a wrap angle that is less than 60 degrees.Type: GrantFiled: June 22, 2005Date of Patent: May 11, 2010Assignee: FUJIFILM CorporationInventors: Hiroshi Yamamoto, Hirokazu Kawai
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Publication number: 20100071980Abstract: An electric power storage apparatus provided in a cabin includes a battery pack for storing electric power, and an air inlet duct for cooling the battery pack. The air inlet duct is formed to extend in the front-back direction of the car body. The air inlet duct includes an air inlet port formed in its end portion in the front-back direction of the car body and located within the cabin. The air inlet port is formed to let the air flow in a direction substantially perpendicular to the front-back direction of the car body.Type: ApplicationFiled: October 29, 2007Publication date: March 25, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Jun Kokaji, Hirokazu Kawai
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Patent number: 7654182Abstract: A discoid lower blade and a discoid upper blade, having a sharper knife angle compared with that of the lower blade, are arranged such that rotational axes thereof are parallel to each other, and portions of the blades overlap one another in the direction that the rotational axes extend. A sheet with a coating layer on one side is fed through and shear-cut between the upper and lower blades in the direction perpendicular to the rotational axes, with the surface of the sheet opposite the coating layer in contact with a periphery of the lower blade while the blades are rotated. When the sheet is shear-cut, a contact start position, where contact between the sheet and the upper blade starts, is positioned upstream in the feed direction of the sheet but outside a contacting area of the sheet, where the sheet contacts the periphery of the lower cutting blade.Type: GrantFiled: June 17, 2004Date of Patent: February 2, 2010Assignee: Fujifilm CorporationInventor: Hirokazu Kawai
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Patent number: 7573238Abstract: A voltage detection device for accurately correcting detection errors with voltage greater than an internal reference voltage. The device includes a first switch group of switches for obtaining the voltage across a battery block in a battery pack. A charge-discharge unit has two or more capacitors connected in series or in parallel. A voltage detector detects discharge voltage of the capacitors. In a first period, the capacitors are series-connected and charged with the voltage of the battery block. In a second period, the capacitors charged in the first period are series-connected and discharged, and the voltage detector detects the discharge voltage. In a third period, the capacitors are parallel-connected and each capacitor is charged with an internal reference voltage. In the fourth period, the capacitors charged in the third period are series-connected and discharged, and the detection error is corrected using the discharge voltage as a reference.Type: GrantFiled: August 8, 2006Date of Patent: August 11, 2009Assignee: Panasonic EV Energy Co., Ltd.Inventor: Hirokazu Kawai
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Publication number: 20090128158Abstract: A voltage detection device for accurately correcting detection errors with voltage greater than an internal reference voltage. The device includes a first switch group of switches for obtaining the voltage across a battery block in a battery pack. A charge-discharge unit has two or more capacitors connected in series or in parallel. A voltage detector detects discharge voltage of the capacitors. In a first period, the capacitors are series-connected and charged with the voltage of the battery block. In a second period, the capacitors charged in the first period are series-connected and discharged, and the voltage detector detects the discharge voltage. In a third period, the capacitors are parallel-connected and each capacitor is charged with an internal reference voltage. In the fourth period, the capacitors charged in the third period are series-connected and discharged, and the detection error is corrected using the discharge voltage as a reference.Type: ApplicationFiled: August 8, 2006Publication date: May 21, 2009Applicant: PANASONIC EV ENERGY CO., LTD.Inventor: Hirokazu Kawai
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Publication number: 20060259817Abstract: A battery pack apparatus including at least one battery assembly, a plurality of medium feeding parts for adjusting temperatures of the battery assembly, at least one temperature detector, a storage unit, and a controller. The storage unit stores a relation between a temperature of the battery assembly and a revolution level of the medium feeding parts. The controller reads out a revolution level corresponding to the detected temperature of the battery assembly from the storage unit, and allocates the revolution level to the medium feeding parts. The controller changes the value of the revolution levels allocated to the respective medium feeding parts based on the allocated revolution levels so that any one of the revolution levels of the plurality of the medium feeding parts is different from the other revolution levels thereof, and controls the plurality of medium feeding parts at changed revolution levels.Type: ApplicationFiled: April 25, 2006Publication date: November 16, 2006Applicant: PANASONIC EV ENERGY CO., LTDInventors: Hirokazu Kawai, Takaki Kobayashi, Jun Okuda