Patents by Inventor Akinori Tomioka
Akinori Tomioka 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: 20230068234Abstract: Provided is a method for manufacturing a ribbon piece that allows suppressing a damage of a rotary die cutter. A method for manufacturing a ribbon piece of the present disclosure includes punching out a ribbon piece from a ribbon material using a rotary die cutter. The rotary die cutter includes a die roll and an anvil roll. The die roll includes a die roll body, and a cutting blade is formed to protrude on an outer peripheral surface of the die roll body. The anvil roll includes an anvil roll body, a groove is provided on an outer peripheral surface of the anvil roll body, and the cutting blade is engageable with the groove with a space.Type: ApplicationFiled: August 22, 2022Publication date: March 2, 2023Applicants: TOYOTA JIDOSHA KABUSHIKI KAISHA, SANJO MACHINE WORKS, LTD., KOTO ENGRAVING CO., LTD.Inventors: Akinori TOMIOKA, Takuya SUKEDA, Naoki HIRAI, Yoshikiyo KONDO, Masaaki SHIMIZU, Isamu SAKAYORI, Kojiro KATAOKA, Hiroshi MISONO
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Patent number: 11492226Abstract: A method of transporting a plurality of sheet-like members containing a magnetic material includes a first step of placing one of the members on an endless belt, and a second step of releasing the member from a portion of the endless belt which is moved and folded back along a roller. The endless belt includes a first magnetic force generating portion that generates first magnetic force, and a second magnetic force generating portion that generates second magnetic force that is stronger than the first magnetic force. In the first step, the member is placed on the belt, such that a first portion of the member containing the magnetic material is located in the first magnetic force generating portion, and a second portion of the member containing the magnetic material and located rearward of the first portion in a conveying direction is located in the second magnetic force generating portion.Type: GrantFiled: May 26, 2021Date of Patent: November 8, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Sukeda, Naoki Hirai, Akinori Tomioka
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Publication number: 20220002108Abstract: A method of transporting a plurality of sheet-like members containing a magnetic material includes a first step of placing one of the members on an endless belt, and a second step of releasing the member from a portion of the endless belt which is moved and folded back along a roller. The endless belt includes a first magnetic force generating portion that generates first magnetic force, and a second magnetic force generating portion that generates second magnetic force that is stronger than the first magnetic force. In the first step, the member is placed on the belt, such that a first portion of the member containing the magnetic material is located in the first magnetic force generating portion, and a second portion of the member containing the magnetic material and located rearward of the first portion in a conveying direction is located in the second magnetic force generating portion.Type: ApplicationFiled: May 26, 2021Publication date: January 6, 2022Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Sukeda, Naoki Hirai, Akinori Tomioka
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Publication number: 20200238560Abstract: Provided are rotary dies that can cut amorphous materials while having suppressed wear. The rotary dies are adapted to cut a target, and include an anvil roller, a die cutter, a first elastic portion, and a second elastic portion. The anvil roller rotates while supporting the target. The die cutter has a projecting edge for cutting the target and is configured to rotate. The first elastic portion is arranged on the outer peripheral surface of the anvil roller, and elastically deforms upon contacting the rear surface of the target when the target is cut. The second elastic portion is arranged on the outer peripheral surface of the die cutter, and elastically deforms upon contacting the front surface of the target when the target is cut. The hardness of the first elastic portion is greater than that of the second elastic portion.Type: ApplicationFiled: January 15, 2020Publication date: July 30, 2020Inventors: Hiromichi NAKATA, Noboru SHIMAMOTO, Takuya SUKEDA, Akinori TOMIOKA, Naoki HIRAI
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Patent number: 10099271Abstract: A pin fin forming method is a method of forming a plurality of pin fins on a surface of a metal plate by subjecting the metal plate to extrusion using a die having a plurality of through-holes and a roll. The pin fin forming method includes placing the metal plate between the die and the roll, and pressing the metal plate from a first end of the metal plate to a second end of the metal plate, by moving the roll relative to the die. The metal plate is pressed from the first end of the metal plate to the second end of the metal plate, in a state where a side surface of the second end of the metal plate and an upper surface of the second end of the metal plate are fixed.Type: GrantFiled: November 24, 2015Date of Patent: October 16, 2018Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirofumi Inoshita, Akinori Tomioka
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Patent number: 9770753Abstract: A surface roughening apparatus includes a first mold and a second mold. The first mold has a plurality of first protrusions. The first mold presses a metallic material to form recesses corresponding to respective shapes of the first protrusions in a surface of the metallic material. The second mold has a plurality of second protrusions. After the first mold presses the metallic material, the second mold presses the metallic material, thereby deforming each recess into an undercut shape. A height of each first protrusion is greater than a height of each second protrusion. A tip angle of each first protrusion is smaller than a tip angle of each second protrusion.Type: GrantFiled: May 24, 2016Date of Patent: September 26, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akinori Tomioka, Hirofumi Inoshita
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Publication number: 20170014885Abstract: A surface roughening apparatus includes a first mold and a second mold. The first mold has a plurality of first protrusions. The first mold presses a metallic material to form recesses corresponding to respective shapes of the first protrusions in a surface of the metallic material. The second mold has a plurality of second protrusions. After the first mold presses the metallic material, the second mold presses the metallic material, thereby deforming each recess into an undercut shape. A height of each first protrusion is greater than a height of each second protrusion. A tip angle of each first protrusion is smaller than a tip angle of each second protrusion.Type: ApplicationFiled: May 24, 2016Publication date: January 19, 2017Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Akinori TOMIOKA, Hirofumi INOSHITA
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Publication number: 20160158825Abstract: A pin fin forming method is a method of forming a plurality of pin fins on a surface of a metal plate by subjecting the metal plate to extrusion using a die having a plurality of through-holes and a roll. The pin fin forming method includes placing the metal plate between the die and the roll, and pressing the metal plate from a first end of the metal plate to a second end of the metal plate, by moving the roll relative to the die. The metal plate is pressed from the first end of the metal plate to the second end of the metal plate, in a state where a side surface of the second end of the metal plate and an upper surface of the second end of the metal plate are fixed.Type: ApplicationFiled: November 24, 2015Publication date: June 9, 2016Inventors: Hirofumi INOSHITA, Akinori TOMIOKA
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Patent number: 9273771Abstract: In a method for manufacturing a multi-stage gear in which no gap is formed between a small-diameter gear and a large-diameter gear, there are included a first step of forming the small-diameter gear on an outer peripheral surface of a workpiece, a second step of forming a large-diameter gear part by plastically deforming an end portion of the workpiece to increase the diameter thereof, and a third step of forming the large-diameter gear by cutting the large-diameter gear part.Type: GrantFiled: July 8, 2011Date of Patent: March 1, 2016Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Sukeda, Hirofumi Inoshita, Koji Shimoda, Akinori Tomioka, Toshiaki Masui, Hironori Aoyama
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Publication number: 20140144269Abstract: In a method for manufacturing a multi-stage gear in which no gap is formed between a small-diameter gear and a large-diameter gear, there are included a first step of forming the small-diameter gear on an outer peripheral surface of a workpiece, a second step of forming a large-diameter gear part by plastically deforming an end portion of the workpiece to increase the diameter thereof, and a third step of forming the large-diameter gear by cutting the large-diameter gear part.Type: ApplicationFiled: July 8, 2011Publication date: May 29, 2014Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Takuya Sukeda, Hirofumi Inoshita, Koji Shimoda, Akinori Tomioka, Toshiaki Masui, Hironori Aoyama