Patents by Inventor Ryotaro HIRATA
Ryotaro HIRATA 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: 10994786Abstract: Provided is a structure for a front part of a vehicle, including a vehicle main body, a pair of suspension support portions, and a cowl member connected to the pair of suspension support portions. The cowl member has: an inner part connection portion which has a shape extending continuously in a vehicle width direction between the pair of suspension support portions and which interconnects respective inner parts of the pair of suspension support portions in the vehicle width direction; and a water drain portion which is provided backward of the inner part connection portion in a front-rear direction of the vehicle and drains water toward a side part of the vehicle in the vehicle width direction. The inner part connection portion has a thickness larger than a thickness of the water drain portion.Type: GrantFiled: March 9, 2018Date of Patent: May 4, 2021Assignees: KOBE STEEL, LTD., MAZDA MOTOR CORPORATIONInventors: Masatoshi Yoshida, Tadashi Yamazaki, Ryotaro Hirata
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Patent number: 10960457Abstract: A cavity (20) provided for a die body (2) at one side thereof in an axial direction includes a cavity bottom surface (21), on which a protrusion (40) jutting toward the one side in the axial direction is formed. A tip end face (41) of the protrusion (40) is configured as a flat surface extending in a direction substantially orthogonal to the axial direction and having a predetermined width (W1) in a radial direction. The predetermined width (W1) of the tip end face (41) is set to be 10% or more of a diameter (Di1) of the cavity (20) at an open end thereof.Type: GrantFiled: April 16, 2018Date of Patent: March 30, 2021Assignee: MAZDA MOTOR CORPORATIONInventors: Yoshihiro Kawasaki, Noboru Shimizu, Ryotaro Hirata
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Publication number: 20200156143Abstract: A cavity (20) provided for a die body (2) at one side thereof in an axial direction includes a cavity bottom surface (21), on which a protrusion (40) jutting toward the one side in the axial direction is formed. A tip end face (41) of the protrusion (40) is configured as a flat surface extending in a direction substantially orthogonal to the axial direction and having a predetermined width (W1) in a radial direction. The predetermined width (W1) of the tip end face (41) is set to be 10% or more of a diameter (Di1) of the cavity (20) at an open end thereof.Type: ApplicationFiled: April 16, 2018Publication date: May 21, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Yoshihiro KAWASAKI, Noboru SHIMIZU, Ryotaro HIRATA
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Publication number: 20200023907Abstract: Provided is a structure for a front part of a vehicle, including a vehicle main body, a pair of suspension support portions, and a cowl member connected to the pair of suspension support portions. The cowl member has: an inner part connection portion which has a shape extending continuously in a vehicle width direction between the pair of suspension support portions and which interconnects respective inner parts of the pair of suspension support portions in the vehicle width direction; and a water drain portion which is provided backward of the inner part connection portion in a front-rear direction of the vehicle and drains water toward a side part of the vehicle in the vehicle width direction. The inner part connection portion has a thickness larger than a thickness of the water drain portion.Type: ApplicationFiled: March 9, 2018Publication date: January 23, 2020Applicants: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.), MAZDA MOTOR CORPORATIONInventors: Masatoshi YOSHIDA, Tadashi YAMAZAKI, Ryotaro HIRATA
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Patent number: 9944330Abstract: An upper face portion of a suspension tower portion of a vehicle comprises an fastening face portion where plural fastening portions to which an upper-side attached portion of a suspension is fixedly fastened are provided and a top face portion which is provided at a higher level than the fastening face portion so as to face the upper-side attached portion of the suspension, the top face portion being connected to a central portion of the fastening face portion via a vertical wall portion. An inner-peripheral-side rib is provided on an inner-peripheral side of the vertical wall portion.Type: GrantFiled: August 4, 2016Date of Patent: April 17, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Miho Kowaki, Sakayu Terada, Ryotaro Hirata
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Patent number: 9878742Abstract: A suspension tower portion structure of a vehicle is configured such that an upper face portion of a suspension tower portion comprises an fastening face portion where plural fastening portions to which an upper-side attached portion of a suspension is fixedly fastened are provided, plural arc-shaped wall portions which are each provided to rise around the fastening portion are provided on the fastening face portion, and the arc-shaped wall portion is configured to be spaced apart from a fastening seat portion of a fastening member to be fastened to the fastening portion 11, having a constant distance therebetween.Type: GrantFiled: August 4, 2016Date of Patent: January 30, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Miho Kowaki, Sakayu Terada, Takehiro Kamei, Ryotaro Hirata
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Publication number: 20170080983Abstract: A suspension tower portion structure of a vehicle is configured such that an upper face portion of a suspension tower portion comprises an fastening face portion where plural fastening portions to which an upper-side attached portion of a suspension is fixedly fastened are provided, plural arc-shaped wall portions which are each provided to rise around the fastening portion are provided on the fastening face portion, and the arc-shaped wall portion is configured to be spaced apart from a fastening seat portion of a fastening member to be fastened to the fastening portion 11, having a constant distance therebetween.Type: ApplicationFiled: August 4, 2016Publication date: March 23, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Miho KOWAKI, Sakayu TERADA, Takehiro KAMEI, Ryotaro HIRATA
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Publication number: 20170080982Abstract: An upper face portion of a suspension tower portion of a vehicle comprises an fastening face portion where plural fastening portions to which an upper-side attached portion of a suspension is fixedly fastened are provided and a top face portion which is provided at a higher level than the fastening face portion so as to face the upper-side attached portion of the suspension, the top face portion being connected to a central portion of the fastening face portion via a vertical wall portion. An inner-peripheral-side rib is provided on an inner-peripheral side of the vertical wall portion.Type: ApplicationFiled: August 4, 2016Publication date: March 23, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Miho KOWAKI, Sakayu TERADA, Ryotaro HIRATA
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Patent number: 9302641Abstract: A guard bar has an inverse-U shape, and its inward end portion is configured to pass through a cross bar and be welded to the cross bar and its outward end portion is fixed to the cross bar via a junction member. The junction member has a reinforcement portion which is fastened together with a link bracket and the cross bar. Thus, there can be provided a seatback bar structure of a vehicle which can properly attach the guard bar, considering the manufacturing accuracy of extrusion molding of aluminum or aluminum alloy, and also can properly transmit a load inputted to the guard bar in a vehicle's rollover to a leg portion and side panels so as to achieve appropriate load dispersion.Type: GrantFiled: December 4, 2014Date of Patent: April 5, 2016Assignee: MAZDA MOTOR CORPORATIONInventors: Ryotaro Hirata, Kei Uchibori
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Publication number: 20150158449Abstract: A guard bar has an inverse-U shape, and its inward end portion is configured to pass through a cross bar and be welded to the cross bar and its outward end portion is fixed to the cross bar via a junction member. The junction member has a reinforcement portion which is fastened together with a link bracket and the cross bar. Thus, there can be provided a seatback bar structure of a vehicle which can properly attach the guard bar, considering the manufacturing accuracy of extrusion molding of aluminum or aluminum alloy, and also can properly transmit a load inputted to the guard bar in a vehicle's rollover to a leg portion and side panels so as to achieve appropriate load dispersion.Type: ApplicationFiled: December 4, 2014Publication date: June 11, 2015Applicant: MAZDA MOTOR CORPORATIONInventors: Ryotaro HIRATA, Kei UCHIBORI