Patents by Inventor Kazumi Okamura
Kazumi Okamura 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: 11603139Abstract: Provided is a vehicle front structure capable of, without breaking a lid provided at a thermal insulating cover, reliably closing a bonnet and the lid even if an attempt is made to close the bonnet prior to closing the lid. In the present invention, a thermal insulating cover 10 including a lid 30 that covers the upper side of an engine in an openable and closable manner is provided below a bonnet 1 that covers the upper side of an engine room in an openable and closable manner; the lid 30 is provided with, in the vehicle front-rear direction, a hinge fulcrum 36 on the same rear end side as a hinge fulcrum 4 of the bonnet 1 and is openable and closable independently of the bonnet 1; and the lid 30 includes locking means 40 that is locked to the bonnet 1 when the lid 30 is open and is released from the locking in conjunction with a closing operation of the bonnet 1.Type: GrantFiled: May 29, 2019Date of Patent: March 14, 2023Assignee: MAZDA MOTOR CORPORATIONInventors: Kazumi Okamura, Motoi Aoki, Makoto Shinhama, Minoru Shitamori
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Patent number: 11447187Abstract: A vehicle front structure includes, below a bonnet (6), a cover member (1) that covers an engine from an upper portion thereof to the side and is formed by an upper wall (30), a shroud (8) as a front wall, a rear wall (13), and side walls (11, 12) on the respective left and right sides. The cover member is formed by the upper wall, the front wall, the rear wall, and the side walls on the respective left and right sides. The front side of one of the left and right side walls is configured to have, relative to the rear side, a higher ratio of a low-rigidity member having lower rigidity than a high-rigidity member forming a main portion on the rear side.Type: GrantFiled: May 24, 2019Date of Patent: September 20, 2022Assignees: MAZDA MOTOR CORPORATION, DaikyoNishikawa CorporationInventors: Kazumi Okamura, Motoi Aoki, Yuta Mishima, Hiroshi Mizuguchi, Daisuke Ooune, Takashi Yamashita
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Patent number: 11364792Abstract: A vehicle includes an engine, an engine cover, and a cross component. The engine cover has a through-hole through which the cross component passes. The cross component is a flexible hose or a flexible pipe in which a body part extending in a cross direction is integrated with a diameter enlarged part having a diameter larger than the body part. The outer peripheral part of the diameter enlarged part makes close contact with the inner peripheral surface of the through-hole of the engine cover.Type: GrantFiled: February 6, 2018Date of Patent: June 21, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Shin Kodama, Makoto Shinhama, Kenji Sugasaki, Kazumi Okamura, Ken Yoshida
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Publication number: 20210371015Abstract: Provided is a vehicle front structure capable of, without breaking a lid provided at a thermal insulating cover, reliably closing a bonnet and the lid even if an attempt is made to close the bonnet prior to closing the lid. In the present invention, a thermal insulating cover 10 including a lid 30 that covers the upper side of an engine in an openable and closable manner is provided below a bonnet 1 that covers the upper side of an engine room in an openable and closable manner; the lid 30 is provided with, in the vehicle front-rear direction, a hinge fulcrum 36 on the same rear end side as a hinge fulcrum 4 of the bonnet 1 and is openable and closable independently of the bonnet 1; and the lid 30 includes locking means 40 that is locked to the bonnet 1 when the lid 30 is open and is released from the locking in conjunction with a closing operation of the bonnet 1.Type: ApplicationFiled: May 29, 2019Publication date: December 2, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Kazumi OKAMURA, Motoi AOKI, Makoto SHINHAMA, Minoru SHITAMORI
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Publication number: 20210214014Abstract: A vehicle front structure includes, below a bonnet (6), a cover member (1) that covers an engine from an upper portion thereof to the side and is formed by an upper wall (30), a shroud (8) as a front wall, a rear wall (13), and side walls (11, 12) on the respective left and right sides. The cover member is formed by the upper wall, the front wall, the rear wall, and the side walls on the respective left and right sides. The front side of one of the left and right side walls is configured to have, relative to the rear side, a higher ratio of a low-rigidity member having lower rigidity than a high-rigidity member forming a main portion on the rear side.Type: ApplicationFiled: May 24, 2019Publication date: July 15, 2021Applicants: MAZDA MOTOR CORPORATION, DaikyoNishikawa CorporationInventors: Kazumi OKAMURA, Motoi AOKI, Yuta MISHIMA, Hiroshi MIZUGUCHI, Daisuke OOUNE, Takashi YAMASHITA
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Patent number: 10688844Abstract: A vehicle is provided, which includes an engine bay having an upper wall, side walls, a front wall, and a rear wall, an engine disposed inside the engine bay, and a dedicated heat retention member provided inside the engine bay, the dedicated heat retention member comprising an upper lid part covering the engine from above to be openable and closable, and side-wall parts covering a side of the engine. A portion of the side-wall parts is comprised of an engine mount bracket configured to support mounts of the engine, instead of the dedicated heat retention member.Type: GrantFiled: June 27, 2018Date of Patent: June 23, 2020Assignee: Mazda Motor CorporationInventors: Yukiya Tanaka, Kazumi Okamura, Tomo Fujiaki
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Patent number: 10669918Abstract: A heat insulating structure of an internal combustion engine (engine 1) includes a cylinder-head-side heat insulating cover (30) and a cylinder-block-side heat insulating cover (40). Each of the first side walls (32) of the cylinder-head-side heat insulating cover (30) is disposed outwardly of, and is spaced apart from, a corresponding one of the second side walls (43) of the cylinder-block-side heat insulating cover (40) in the width direction of the vehicle. The lower edge of each of the first side walls (32) is positioned below the upper edge of the corresponding one of the second side walls (43) to overlap with the corresponding one of the second side walls (43) when viewed from the side of the vehicle.Type: GrantFiled: March 6, 2017Date of Patent: June 2, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Tsukasa Hoshino, Kenji Sugasaki, Kazumi Okamura, Makoto Shinhama, Masanobu Koutoku, Ryo Yamamoto, Yukiya Tanaka, Toshimichi Nishikawa
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Publication number: 20200122569Abstract: A vehicle includes an engine, an engine cover, and a cross component. The engine cover has a through-hole through which the cross component passes. The cross component is a flexible hose or a flexible pipe in which a body part extending in a cross direction is integrated with a diameter enlarged part having a diameter larger than the body part. The outer peripheral part of the diameter enlarged part makes close contact with the inner peripheral surface of the through-hole of the engine cover.Type: ApplicationFiled: February 6, 2018Publication date: April 23, 2020Applicant: Mazda Motor CorporationInventors: Shin KODAMA, Makoto SHINHAMA, Kenji SUGASAKI, Kazumi OKAMURA, Ken YOSHIDA
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Patent number: 10343512Abstract: A vehicle is provided, which includes an engine bay having an upper wall, side walls, a front wall, and a rear wall, an engine disposed inside the engine bay, an upper lid part disposed inside the engine bay and covering the engine from above, a shroud disposed inside the engine bay and formed in a frame shape having an opening disposed forward of the engine, and a grille shutter provided to the shroud and configured to open and close the opening. A front end of the upper lid part is placed on an upper side of the shroud, and the grille shutter is closed when an ignition is off.Type: GrantFiled: June 27, 2018Date of Patent: July 9, 2019Assignee: Mazda Motor CorporationInventors: Yukiya Tanaka, Kazumi Okamura, Shunsuke Fujitani, Yuhki Takanaga
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Patent number: 10266128Abstract: A heat insulating cover (cylinder-head-side heat insulating cover (30)) includes a top wall (31) and first side walls (32). The top wall (31) covers a top surface of an engine (1) that is a surface of an upper portion of the engine (1). The first side walls (32) cover respective upper portions of both side surfaces of the engine (1) in a vehicle width direction. A portion of the heat insulating cover closer to the rear of the vehicle is provided with a hinge mechanism (36) vertically rotatably supporting the upper portion of the heat insulating cover including the top wall (31). The upper portion of the heat insulating cover can be rotated, with the hinge mechanism (36) as a fulcrum, between a closed position where the engine (1) is shielded and an open position where the engine (1) is visible.Type: GrantFiled: March 8, 2017Date of Patent: April 23, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Tsukasa Hoshino, Kenji Sugasaki, Kazumi Okamura, Makoto Shinhama, Masanobu Koutoku, Ryo Yamamoto, Yukiya Tanaka, Toshimichi Nishikawa
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Publication number: 20190061513Abstract: A vehicle is provided, which includes an engine bay having an upper wall, side walls, a front wall, and a rear wall, an engine disposed inside the engine bay, an upper lid part disposed inside the engine bay and covering the engine from above, a shroud disposed inside the engine bay and formed in a frame shape having an opening disposed forward of the engine, and a grille shutter provided to the shroud and configured to open and close the opening. A front end of the upper lid part is placed on an upper side of the shroud, and the grille shutter is closed when an ignition is off.Type: ApplicationFiled: June 27, 2018Publication date: February 28, 2019Inventors: Yukiya Tanaka, Kazumi Okamura, Shunsuke Fujitani, Yuhki Takanaga
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Publication number: 20190061460Abstract: A vehicle is provided, which includes an engine bay having an upper wall, side walls, a front wall, and a rear wall, an engine disposed inside the engine bay, and a dedicated heat retention member provided inside the engine bay, the dedicated heat retention member comprising an upper lid part covering the engine from above to be openable and closable, and side-wall parts covering a side of the engine. A portion of the side-wall parts is comprised of an engine mount bracket configured to support mounts of the engine, instead of the dedicated heat retention member.Type: ApplicationFiled: June 27, 2018Publication date: February 28, 2019Inventors: Yukiya Tanaka, Kazumi Okamura, Tomo Fujiaki
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Publication number: 20190048779Abstract: A heat insulating structure of an internal combustion engine (engine 1) includes a cylinder-head-side heat insulating cover (30) and a cylinder-block-side heat insulating cover (40). Each of the first side walls (32) of the cylinder-head-side heat insulating cover (30) is disposed outwardly of, and is spaced apart from, a corresponding one of the second side walls (43) of the cylinder-block-side heat insulating cover (40) in the width direction of the vehicle. The lower edge of each of the first side walls (32) is positioned below the upper edge of the corresponding one of the second side walls (43) to overlap with the corresponding one of the second side walls (43) when viewed from the side of the vehicle.Type: ApplicationFiled: March 6, 2017Publication date: February 14, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Tsukasa HOSHINO, Kenji SUGASAKI, Kazumi OKAMURA, Makoto SHINHAMA, Masanobu KOUTOKU, Ryo YAMAMOTO, Yukiya TANAKA, Toshimichi NISHIKAWA
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Publication number: 20180244216Abstract: A heat insulating cover (cylinder-head-side heat insulating cover (30)) includes a top wall (31) and first side walls (32). The top wall (31) covers a top surface of an engine (1) that is a surface of an upper portion of the engine (1). The first side walls (32) cover respective upper portions of both side surfaces of the engine (1) in a vehicle width direction. A portion of the heat insulating cover closer to the rear of the vehicle is provided with a hinge mechanism (36) vertically rotatably supporting the upper portion of the heat insulating cover including the top wall (31). The upper portion of the heat insulating cover can be rotated, with the hinge mechanism (36) as a fulcrum, between a closed position where the engine (1) is shielded and an open position where the engine (1) is visible.Type: ApplicationFiled: March 8, 2017Publication date: August 30, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Tsukasa HOSHINO, Kenji SUGASAKI, Kazumi OKAMURA, Makoto SHINHAMA, Masanobu KOUTOKU, Ryo YAMAMOTO, Yukiya TANAKA, Toshimichi NISHIKAWA
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Patent number: 5445241Abstract: An automotive engine is generally provided with an exhaust gas pipe assembly extending generally rearwardly from the engine for discharging exhaust gases. The exhaust gas pipe assembly includes a plurality of exhaust gas pipes, at least one chamber formed intermediately of the exhaust gas pipe assembly, a first support member disposed in the proximity of the engine, and at least one second support member disposed in the proximity of the chamber. The first support member can effectively absorb relative displacement between the exhaust gas pipe assembly and the vehicle body in a direction transversely of the vehicle body whereas the second support member can effectively absorb relative displacement between the exhaust gas pipe assembly and the vehicle body in a direction longitudinally of the vehicle body.Type: GrantFiled: December 8, 1994Date of Patent: August 29, 1995Assignee: Mazda Motor CorporationInventors: Yoshitaka Nakamura, Keiji Araki, Kazumi Okamura, Koji Mizuno
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Patent number: 4981115Abstract: Each cylinder bank of a V-type engine is provided with a plurality of cylinders which are not in sequence in firing order. A collecting intake passage is connected to each of the cylinders of both banks by way of independent intake passages which pass between the two banks and have the same effective channel length, and each of the independent intake passages is arranged so that it extends substantially perpendicularly and upwardly from a cylinder. Both collecting intake passages are arranged above one of the cylinder banks, and the collecting intake passage which is connected to a cylinder of the other cylinder bank is arranged on the independent intake passages connected to the other collecting intake passage. By doing so, overlapping of both collecting intake passages can be avoided and thus the height of the intake system can be reduced. The independent intake passages and the collecting intake passage which overlaps the former have a common wall.Type: GrantFiled: July 31, 1989Date of Patent: January 1, 1991Assignee: Mazda Motor CorporationInventors: Yasuhiro Okasako, Fusatoshi Tanaka, Hideo Nakayama, Takashige Ishikawa, Kazumi Okamura, Hiroyuki Matsumoto, Tsuyoshi Tsuchida
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Patent number: 4858570Abstract: In a V-type engine, the cylinders in one of the cylinder banks are connected to a first communicating passage and the cylinders in the other cylinder bank are connected to a second communicating passage. The cylinders in each cylinder bank do not fire one after another. First and second intake air supply passages are connected to the first and second communicating passages at positions near one end of the communicating passages and extend toward the respective other ends of the communicating passages just above the communicating passages.Type: GrantFiled: October 18, 1988Date of Patent: August 22, 1989Assignee: Mazda Motor CorporationInventors: Hiroyouki Matsumoto, Kazumi Okamura, Hideo Nakayama, Yasuhiro Okasako