Patents Assigned to Yoshikawa Kogyo Co., Ltd.
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Publication number: 20230084097Abstract: Provided is a new technique capable of determining whether or not a hook of a safety harness is used correctly, without causing complexity in the configurations of the hook and a safety rope. Specifically, provided is a system for confirming a hooking state of a safety harness, wherein a safety harness 10 comprises: a belt 11 to be worn on a body of a worker; a safety rope 12 connected to the belt 11; a hook 13 attached to a distal end of the safety rope 12; and a hook holder 14 for allowing the hook 13 to be attached to the belt 11 therethrough. The system is operable to detect whether or not the hook 13 is attached to the hook holder 14, and issue a warning when it is detected that the hook 13 is attached to the hook holder 14.Type: ApplicationFiled: March 29, 2021Publication date: March 16, 2023Applicant: YOSHIKAWA KOGYO CO., LTD.Inventors: Kikuzo SAWADA, Shinya HARANO
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Publication number: 20220130606Abstract: Provided is a laminated iron core in which joining failure between adjacent steel sheets thereof is less likely to occur, even if a distance between the adjacent steel sheets (thickness of an adhesive layer) is reduced. 1. The laminated iron core comprises a plurality of steel sheets laminated together while an adhesive layer is interposed between any adjacent two of the steel sheets, wherein the adhesive layer is comprised of a thermosetting resin composition containing an epoxy resin, an amino triazine novolac-based phenolic resin, an acrylic acid ester-based polymer, and inorganic particles having an average particle size of 10 nm to 100 nm, and a maximum particle size of 1 ?m or less, and wherein: the content in volume percentage of the inorganic particles in the adhesive layer is from 5 vol % to 30 vol %; the adhesive layer having a Young's modulus of 2 GPa to 6 GPa as measured at 25° C. by a nanoindentation technique; and a distance between the adjacent steel sheets being from 0.5 ?m to 5 ?m.Type: ApplicationFiled: April 4, 2019Publication date: April 28, 2022Applicant: YOSHIKAWA KOGYO CO., LTD.Inventor: Yasuo SHIMOBE
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Publication number: 20210021162Abstract: Provided is a stator core formed by laminating electrical steel sheets to steadily curtail iron loss and a motor equipped with the stator core. A stator core 10 formed by laminating electrical steel sheets 11 having a thickness of from 25 to 80 ?m steadily curtails iron loss. A motor 20 including the stator core 10 formed by laminating electrical steel sheets 11 having a thickness of from 25 to 80 ?m has a steadily improved efficiency.Type: ApplicationFiled: September 14, 2020Publication date: January 21, 2021Applicant: YOSHIKAWA KOGYO CO., LTD.Inventors: Masato Enokizono, Yuji Mori, Ryo Ueda, Katsuyuki Hayashi
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Patent number: 10720816Abstract: Provided is a method of manufacturing a laminated core for stably fixing a thin core piece while suppressing reduction in production efficiency, and an inner core and an outer core with core pieces stably fixed. A method of manufacturing a laminated core for manufacturing an inner core 10 includes: a step A of laminating a plurality of core pieces 11 and temporarily fixing each of the core pieces to another core piece 11 to obtain a core piece group 16; a step B of fitting the core piece group 16 to a holder 17; a step C of applying an uncured curable resin P to an outer peripheral region of the core piece group 16; and a step D of curing the curable resin P applied to the core piece group 16 and fully fixing each of the core pieces 11 to another core piece 11.Type: GrantFiled: December 6, 2016Date of Patent: July 21, 2020Assignee: Yoshikawa Kogyo Co., Ltd.Inventor: Yuji Mori
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Patent number: 10323153Abstract: [Problem] To provide a corrosion-resistant coating that exhibits greater corrosion protection in saltwater environments and the like than was conventional, a method for forming the same, and a device for forming the same. [Solution] A corrosion-resistant alloy coating is formed on a substrate surface by: a) using a thermal spray gun, having a function wherein a flame including melted material particles is jetted toward a substrate, and the flame is partitioned from the open air in an upstream region on said jet path (which is to say the region in which the material particles are melted), and a function wherein, in a downstream region (the area continuing from the upstream region), the material particles and the flame are forcibly cooled by a jet-gas or jet-mist before reaching the substrate; and b) using a corrosion-resistant alloy material comprising aluminum, for the material particles.Type: GrantFiled: January 27, 2015Date of Patent: June 18, 2019Assignee: YOSHIKAWA KOGYO CO., LTD.Inventors: Ryurou Kurahashi, Toshiharu Morimoto, Yoshio Shin, Fumiaki Otsubo, Yasuhiro Omori, Takashi Kumai, Yusuke Nishiura, Toshifumi Horita
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Publication number: 20180367016Abstract: Provided is a method of manufacturing a laminated core for stably fixing a thin core piece while suppressing reduction in production efficiency, and an inner core and an outer core with core pieces stably fixed. A method of manufacturing a laminated core for manufacturing an inner core 10 includes: a step A of laminating a plurality of core pieces 11 and temporarily fixing each of the core pieces to another core piece 11 to obtain a core piece group 16; a step B of fitting the core piece group 16 to a holder 17; a step C of applying an uncured curable resin P to an outer peripheral region of the core piece group 16; and a step D of curing the curable resin P applied to the core piece group 16 and fully fixing each of the core pieces 11 to another core piece 11.Type: ApplicationFiled: December 6, 2016Publication date: December 20, 2018Applicant: Yoshikawa Kogyo Co., Ltd.Inventor: Yuji MORI
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Publication number: 20180248420Abstract: Provided is a stator core formed by laminating electrical steel sheets to steadily curtail iron loss and a motor equipped with the stator core. A stator core 10 formed by laminating electrical steel sheets 11 having a thickness of from 25 to 80 ?m steadily curtails iron loss. A motor 20 including the stator core 10 formed by laminating electrical steel sheets 11 having a thickness of from 25 to 80 ?m has a steadily improved efficiency.Type: ApplicationFiled: August 19, 2016Publication date: August 30, 2018Applicant: YOSHIKAWA KOGYO CO.,LTD.Inventors: Masato ENOKIZONO, Yuji MORI, Ryo UEDA, Katsuyuki HAYASHI
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Patent number: 9875635Abstract: Provided is a proximity detection system which is capable of changing a level of alarm depending on a distance between a worker and an apparatus, and setting an alarm-generating distance in an apparatus-side unit. The proximity detection system comprises a magnetic field detecting function-equipped RFID tag attachable to a worker, and a distance detection control unit installable in a self-propelled apparatus. The magnetic field detecting function-equipped RFID tag is configured to be selectively set between a plurality of levels of magnetic field detecting sensitivity, and comprises means to intermittently transmit setup magnetic field detecting sensitivity data and magnetic field detection data. The distance detection control unit is configured to output different levels of alarm according to the data received from the RFID tag.Type: GrantFiled: January 10, 2013Date of Patent: January 23, 2018Assignee: YOSHIKAWA KOGYO CO. LTD.Inventor: Kikuzo Sawada
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Patent number: 8384202Abstract: Provided is a package structure of a semiconductor device, capable of further reducing a planar size. The semiconductor device comprises a first package 2 embedding a first element 1, and a second package 4 stacked on and fixed to the first package while internally housing a second element 3. The first package 2 includes a lead frame 5 and a metallization wiring 6. The metallization wiring 6 is formed by resin-molding the first package 2 using a transfer lead frame having the metallization wiring 6 arranged on a base substrate, and, after the resin molding, removing the base substrate to leave the metallization wiring 6 on a removing surface of a molded resin in a transferred manner, while allowing a peripheral region of the metallization wiring 6 to be exposed on the side of and in flush relation with the removing surface of the molded resin so as to serve as an external terminal 6a.Type: GrantFiled: March 10, 2009Date of Patent: February 26, 2013Assignee: Yoshikawa Kogyo Co., Ltd.Inventors: Yukihiko Hoashi, Hiroo Kubo, Kazuhito Tsuzura, Kunihiko Shiroishi
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Publication number: 20110133296Abstract: Provided is a package structure of a semiconductor device, capable of further reducing a planar size. The semiconductor device comprises a first package 2 embedding a first element 1, and a second package 4 stacked on and fixed to the first package while internally housing a second element 3. The first package 2 includes a lead frame 5 and a metallization wiring 6. The metallization wiring 6 is formed by resin-molding the first package 2 using a transfer lead frame having the metallization wiring 6 arranged on a base substrate, and, after the resin molding, removing the base substrate to leave the metallization wiring 6 on a removing surface of a molded resin in a transferred manner, while allowing a peripheral region of the metallization wiring 6 to be exposed on the side of and in flush relation with the removing surface of the molded resin so as to serve as an external terminal 6a.Type: ApplicationFiled: March 10, 2009Publication date: June 9, 2011Applicant: YOSHIKAWA KOGYO CO., LTD.Inventors: Yukihiko Hoashi, Hiroo Kubo, Kazuhito Tsuzura, Kunihiko Shiroishi
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Patent number: 7320940Abstract: In a method for manufacturing an acceleration sensor device, a lid for covering an opening of a package body is prepared by stamping. The lid is plated and plating films are formed on surfaces of the lid. The burrs formed on the surfaces of the lid in the plating process are removed by chemical polishing. A semiconductor sensor chip is inserted in the package body through the opening and fixed. Then, the lid 70 is attached to the package body.Type: GrantFiled: September 16, 2004Date of Patent: January 22, 2008Assignees: DENSO CORPORATION, Yoshikawa Kogyo Co., Ltd.Inventors: Tomohito Kunda, Tsukasa Fukurai
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Patent number: 6722023Abstract: The present invention provides a scrapping system of used-automobiles, comprising a reusable parts collecting station A, a liquid collecting station B for collecting liquids including fuel, oil and coolant, a prearrangement station C for collecting chlorofluorocarbon, batteries, seats, tires, etc., a functional parts collecting station D for collecting suspension device, etc., a non-ferrous metal parts and resin parts collecting station E for collecting motors, harnesses, instrument panels, bumpers, etc., and a pressing station F for pressing a body of the used-automobile which has been processed in the above stations, wherein the stations sequentially arranged.Type: GrantFiled: May 13, 2003Date of Patent: April 20, 2004Assignee: Yoshikawa Kogyo Co., Ltd.Inventors: Toshio Mori, Seietsu Morimoto, Katsumi Eguchi, Tomio Kawasaki, Hirohumi Kamiota
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Publication number: 20030192159Abstract: The present invention provides a scrapping system of used-automobiles, comprising a reusable parts collecting station A, a liquid collecting station A for collecting liquids including fuel, oil and coolant, a prearrangement station B for collecting Freon, batteries, seats, tires and the like, a functional parts collecting station D for collecting suspension device and the like, a non-ferrous metal parts and resin parts collecting station E for collecting motors, harnesses, instrument panels, bumpers and the like, and a pressing station F for pressing a body of the used-automobile which has been processed in the above stations, wherein said steps are sequentially carried out.Type: ApplicationFiled: May 13, 2003Publication date: October 16, 2003Applicant: Yoshikawa Kogyo Co. Ltd.Inventors: Toshio Mori, Seietsu Morimoto, Katsumi Eguchi, Tomio Kawasaki, Hirohumi Kamiota
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Patent number: 6594877Abstract: A scrapping system of used-automobiles includes a reusable parts collecting station, a liquid collecting station for collecting liquids including fuel, oil and coolant, a prearrangement station for collecting chlorofluorocarbon, batteries, seats, tires, etc., a functional parts collecting station for collecting a suspension device, a non-ferrous metal parts and resin parts collecting station for collecting motors, harnesses, instrument panels, bumpers, etc., and a pressing station for pressing a body of the used-automobile which has been processed in the above stations. The stations are sequentially arranged.Type: GrantFiled: March 27, 2001Date of Patent: July 22, 2003Assignee: Yoshikawa Kogyo Co., Ltd.Inventors: Toshio Mori, Seietsu Morimoto, Katsumi Eguchi, Tomio Kawasaki, Hirohumi Kamiota
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Patent number: 6077207Abstract: A printing web transporting roller is disclosed which is characterized by using as the roller basis thereof a roller basis made of a fiber-reinforced plastics and provided on the peripheral surface thereof with a plurality of portions of a surface of large curvature and a plurality of portions of a surface of small curvature alternately arranged in a mutually adjoining state and having a composite coating film superposed on the roller basis and composed of a porous ceramic layer formed by thermal spraying and a resin layer formed on the surface of the ceramic layer and inside the pores in the ceramic layer.Type: GrantFiled: September 23, 1998Date of Patent: June 20, 2000Assignees: Yoshikawa Kogyo Co., Ltd., Kabushiki Kaisha Tokyo Kikai Seisakusho, Nippon Steel Chemical Co., Ltd.Inventors: Kazuhiro Yokoyama, Kunihiro Umezu, Noriyuki Shiba
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Patent number: 4389360Abstract: A method of forming a protective coating on a long immersible lance is disclosed. A mold having an inlet port in a peripheral portion thereof is laid on its side so that the inlet port faces upwardly. A long lance is set in the mold with a clearance left between the mold and the lance that corresponds to the required thickness of coating. Then a coating material is cast into the clearance through the inlet port to thereby form a coating on the lance, followed by drying of the coating.Type: GrantFiled: December 10, 1980Date of Patent: June 21, 1983Assignees: Nippon Steel Corporation, Yoshikawa Kogyo Co., Ltd.Inventors: Katsuhiko Noro, Yusei Nagaki, Shinpei Sasaki, Sakae Kumagai