Patents by Inventor Toshiaki Onuma
Toshiaki Onuma 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: 11548063Abstract: An insert (cover member) is formed of an iron-based alloy. A casting mold is constituted by a fixed mold and a movable mold. An insert housing portion (cover housing portion) for housing the insert is formed in a separation surface between the fixed mold and the movable mold, and a magnet is embedded in the insert housing portion of either the fixed mold or the movable mold. A robot grips the insert with a gripping portion (hand) to convey the insert to a position facing the insert housing portion, releases the insert at the facing position in a state where a predetermined clearance is secured between the insert and the insert housing portion, and causes the insert to be attracted to the insert housing portion by the magnet.Type: GrantFiled: August 20, 2021Date of Patent: January 10, 2023Assignee: HONDA MOTOR CO., LTD.Inventors: Takuji Suezawa, Shinji Sangawa, Toshiaki Onuma, Hiroshi Ichikawa
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Patent number: 11458531Abstract: A casting mold includes a cavity for molding a product, and a pouring basin and a passageway that guide molten metal into the cavity. The passageway includes, at portions thereof positioned below the pouring basin and the cavity, bent portions (a first bent portion, a second bent portion) that change the advancing direction of the molten metal, and the casting mold further includes a cover member, which covers the inner wall of the bent portion, allows the passageway positioned on the upstream side of the bent portion to communicate with the passageway positioned on the downstream side of the bent portion, and has a lower thermal conductivity than the base material of the mold.Type: GrantFiled: August 20, 2021Date of Patent: October 4, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Takuji Suezawa, Shinji Sangawa, Toshiaki Onuma, Hiroshi Ichikawa
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Patent number: 11453046Abstract: A casting mold includes a cover member covering the inner wall of a bent portion (a first bent portion, etc.) of a passageway. The cover member has a bottomed cylindrical shape having an axis extending in an up-down direction, and includes an upper hole, lateral holes, and at least one flange (a side wall flange). At least one of a fixed mold and a movable mold includes a flange housing groove in a separation surface. When the cover member is disposed in the bent portion and the casting mold is closed, the flange is housed in the flange housing groove, and the cover member is held in a state where a gap is formed between the inner wall of the bent portion and the outer wall of the cover member.Type: GrantFiled: August 20, 2021Date of Patent: September 27, 2022Assignee: HONDA MOTOR CO., LTD.Inventors: Takuji Suezawa, Toshiaki Onuma, Shinji Sangawa, Hiroshi Ichikawa
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Publication number: 20220055095Abstract: A casting mold includes a cover member covering the inner wall of a bent portion (a first bent portion, etc.) of a passageway. The cover member has a bottomed cylindrical shape having an axis extending in an up-down direction, and includes an upper hole, lateral holes, and at least one flange (a side wall flange). At least one of a fixed mold and a movable mold includes a flange housing groove in a separation surface. When the cover member is disposed in the bent portion and the casting mold is closed, the flange is housed in the flange housing groove, and the cover member is held in a state where a gap is formed between the inner wall of the bent portion and the outer wall of the cover member.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Inventors: Takuji Suezawa, Toshiaki Onuma, Shinji Sangawa, Hiroshi Ichikawa
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Publication number: 20220055101Abstract: An insert (cover member) is formed of an iron-based alloy. A casting mold is constituted by a fixed mold and a movable mold. An insert housing portion (cover housing portion) for housing the insert is formed in a separation surface between the fixed mold and the movable mold, and a magnet is embedded in the insert housing portion of either the fixed mold or the movable mold. A robot grips the insert with a gripping portion (hand) to convey the insert to a position facing the insert housing portion, releases the insert at the facing position in a state where a predetermined clearance is secured between the insert and the insert housing portion, and causes the insert to be attracted to the insert housing portion by the magnet.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Inventors: Takuji Suezawa, Shinji Sangawa, Toshiaki Onuma, Hiroshi Ichikawa
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Publication number: 20220055094Abstract: A casting mold includes a cavity for molding a product, and a pouring basin and a passageway that guide molten metal into the cavity. The passageway includes, at portions thereof positioned below the pouring basin and the cavity, bent portions (a first bent portion, a second bent portion) that change the advancing direction of the molten metal, and the casting mold further includes a cover member, which covers the inner wall of the bent portion, allows the passageway positioned on the upstream side of the bent portion to communicate with the passageway positioned on the downstream side of the bent portion, and has a lower thermal conductivity than the base material of the mold.Type: ApplicationFiled: August 20, 2021Publication date: February 24, 2022Inventors: Takuji Suezawa, Shinji Sangawa, Toshiaki Onuma, Hiroshi Ichikawa
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Patent number: 7354549Abstract: A nitrogen trapping agent is added by a metering hopper to raw materials, which are melted and poured into a mold cavity of a metal mold device (18). The molten metal is then cooled and solidified into a casting (B). Before the molten metal is fully cooled and solidified, free nitrogen present in the molten metal is quickly trapped by the nitrogen trapping agent, producing a nitride. Then, a chilled structure generated in the surface layer of the casting (B) is decomposed by heating the casting (B). Finally, the heated casting (B) is machined into a camshaft (A) which is a cast iron member as a final product.Type: GrantFiled: September 26, 2002Date of Patent: April 8, 2008Assignee: Honda Giken Kogyo Kabushiki KaishaInventors: Takao Watanabe, Toshiaki Onuma, Yoshimi Ueda, Takeshi Sasaki
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Publication number: 20040244881Abstract: A nitrogen trapping agent is added by a metering hopper to raw materials, which are melted and poured into a mold cavity of a metal mold device (18). The molten metal is then cooled and solidified into a casting (B). Before the molten metal is fully cooled and solidified, free nitrogen present in the molten metal is quickly trapped by the nitrogen trapping agent, producing a nitride. Then, a chilled structure generated in the surface layer of the casting (B) is decomposed by heating the casting (B). Finally, the heated casting (B) is machined into a camshaft (A) which is a cast iron member as a final product.Type: ApplicationFiled: March 9, 2004Publication date: December 9, 2004Inventors: Takao Watanabe, Toshiaki Onuma, Yoshimi Ueda, Takeshi Sasaki