Patents by Inventor Keizo Kawasaki
Keizo Kawasaki 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: 11858045Abstract: Provided is a Fe-based sintered body which has both of a high hardness and a high thermal conductivity and which can be more stably produced. The Fe-based sintered body includes: a matrix (1) containing Fe as a main component; and a hard phase (4) dispersed in the matrix (1). The matrix (1) is formed in a network shape and contains ?Fe. The hard phase (4) contains TiC.Type: GrantFiled: July 24, 2019Date of Patent: January 2, 2024Assignees: Hiroshima University, Y-tec Corporation, keylex corporation, Mazda Motor CorporationInventors: Kazuhiro Matsugi, Yujiao Ke, Zhefeng Xu, Kenjiro Sugio, Yongbum Choi, Gen Sasaki, Hajime Suetsugu, Hiroki Kondo, Hideki Manabe, Kyotaro Yamane, Kenichi Hatakeyama, Keizo Kawasaki, Tsuyoshi Itaoka, Shinsaku Seno, Yasushi Tamura, Ichirou Ino, Yoshihide Hirao
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Publication number: 20210316361Abstract: Provided is a method of producing a composite having high strength and high thermal conductivity. The method includes: an alloy preparation step including preparing an alloy which is a solid solution containing ?-Fe as a solvent and at least one type of ?-phase stabilizing element as a solute; a first mixing step including mixing at least one type of ?-phase stabilizing element in powder form and SiC to prepare a first mixture; a second mixing step including mixing the alloy and the first mixture to prepare a second mixture; and a sintering step including sintering the second mixture.Type: ApplicationFiled: July 9, 2019Publication date: October 14, 2021Inventors: Kenjiro SUGIO, Takuya TAKAHASHI, Hitoshi SAWADA, Gen SASAKI, Kazuhiro MATSUGI, Yongbum CHOI, Zhefeng XU, Hajime SUETSUGU, Hiroki KONDO, Hideki MANABE, Kyotaro YAMANE, Kenichi HATAKEYAMA, Keizo KAWASAKI, Tsuyoshi ITAOKA, Shinsaku SENO, Yasushi TAMURA, Ichirou INO, Yoshihide HIRAO
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Publication number: 20210308756Abstract: Provided is a Fe-based sintered body which has both of a high hardness and a high thermal conductivity and which can be more stably produced. The Fe-based sintered body includes: a matrix (1) containing Fe as a main component; and a hard phase (4) dispersed in the matrix (1). The matrix (1) is formed in a network shape and contains ?Fe. The hard phase (4) contains TiC.Type: ApplicationFiled: July 24, 2019Publication date: October 7, 2021Inventors: Kazuhiro MATSUGI, Yujiao KE, Zhefeng XU, Kenjiro SUGIO, Yongbum CHOI, Gen SASAKI, Hajime SUETSUGU, Hiroki KONDO, Hideki MANABE, Kyotaro YAMANE, Kenichi HATAKEYAMA, Keizo KAWASAKI, Tsuyoshi ITAOKA, Shinsaku SENO, Yasushi TAMURA, Ichirou INO, Yoshihide HIRAO
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Patent number: 10597091Abstract: To provide a vehicle front body structure including a side sill that extends in a vehicle front-rear direction and is located behind a position where a front wheel is disposed and a torque box extending from a front end of the side sill toward an inside in a vehicle width direction. In the vehicle front body structure, the torque box includes an upper surface portion disposed at a substantially same height as an upper surface of the side sill and a lower surface portion disposed at a substantially same height as a lower surface of the side sill. A reinforcing member is provided in an internal space surrounded by the upper surface portion and the lower surface portion of the torque box.Type: GrantFiled: January 5, 2017Date of Patent: March 24, 2020Assignee: Mazda Motor CorporationInventors: Takeshi Nakamura, Keizo Kawasaki, Kazuki Yamauchi
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Patent number: 10556626Abstract: A vehicle front body structure includes: a dash panel; an apron reinforcement extending forward on an outside in the vehicle width direction of an engine room; a suspension housing coupled to the apron reinforcement in front of the dash panel; a cowl side panel extending in a front-rear direction between a rear portion of the suspension housing and the dash panel in side view of the vehicle, the cowl side panel 11 constituting a wall portion on the outside in the vehicle width direction of the engine room; and a first reinforcing member dividing a space surrounded by the apron reinforcement and the cowl side panel back and forth.Type: GrantFiled: January 5, 2017Date of Patent: February 11, 2020Assignee: Mazda Motor CorporationInventors: Takeshi Nakamura, Keizo Kawasaki, Shigeaki Watanabe, Kenji Maruyama
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Patent number: 10315702Abstract: There are provided a hinge pillar extending in a vehicle vertical direction, an apron reinforcement extending forward from the hinge pillar, a connecting member provided below the apron reinforcement and connecting the hinge pillar and the apron reinforcement in a brace shape, a dash panel provided in back of the connecting member and extending in a vehicle width direction, a wheel house provided in front of the dash panel, and an apron rear panel provided on an inward side, in the vehicle width direction, of and closely to the connecting member and connecting a rear portion of the wheel house and the dash panel.Type: GrantFiled: December 21, 2016Date of Patent: June 11, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Takeshi Nakamura, Keizo Kawasaki, Hidenori Matsuoka, Kenji Maruyama
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Patent number: 10196096Abstract: A vehicle-body structure of a vehicle includes a first frame forming a closed cross-section portion, a reinforcing member disposed in the closed cross-section portion and connected to the first frame, and another vehicle-body member connected to an outer surface of the first frame. A connection portion of the first frame and the reinforcing member includes a rigid joint portion where the first frame and the reinforcing member are joined, and a flexible joint portion where the first frame and the reinforcing member are joined, with a damper member being disposed therebetween. The other vehicle-body member is connected to the first frame in a manner such that at least a part of the other vehicle-body member overlaps the flexible joint portion in a thickness direction of the first frame, and has a high rigidity portion that enhances rigidity at the part that overlaps the flexible joint portion.Type: GrantFiled: August 8, 2016Date of Patent: February 5, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Kenichi Sato, Keizo Kawasaki, Takeshi Nakamura
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Patent number: 10179610Abstract: A front vehicle-body structure of a vehicle comprises a hinge pillar, an apron reinforcement, a suspension housing, a side sill, and a connecting member which connects the apron reinforcement to the hinge pillar in a brace shape and connecting the apron reinforcement to a front portion of the side sill. The connecting member includes first and second bending portions which are positioned between a rear face portion and a side face portion and between a forward flange and the side face portion, respectively, and the apron reinforcement and the side sill are continuous to each other via at least one of the first and second bending portions.Type: GrantFiled: December 21, 2016Date of Patent: January 15, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Takeshi Nakamura, Keizo Kawasaki
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Patent number: 10150511Abstract: A body structure of a vehicle includes: a first panel and a second panel forming a closed cross-sectional portion; a partition panel; a first reinforcement body disposed between the first panel and the partition panel, and includes a first panel joint portion joined to the first panel, and a first flange portion joined to the partition panel; and a second reinforcement body which is disposed between the second panel and the partition panel, and includes a second panel joint portion joined to the second panel, and a second flange portion joined to the partition panel. A joint portion includes a rigid coupling portion in which the first panel and the first panel joint portion are coupled while being in contact with each other, and a flexible coupling portion in which the partition panel and the first flange portion are coupled to each other while interposing a damping member therebetween.Type: GrantFiled: August 15, 2016Date of Patent: December 11, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Akira Iyoshi, Keizo Kawasaki, Takeshi Nakamura
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Publication number: 20180257715Abstract: A vehicle front body structure includes: a dash panel; an apron reinforcement extending forward on an outside in the vehicle width direction of an engine room; a suspension housing coupled to the apron reinforcement in front of the dash panel; a cowl side panel extending in a front-rear direction between a rear portion of the suspension housing and the dash panel in side view of the vehicle, the cowl side panel 11 constituting a wall portion on the outside in the vehicle width direction of the engine room; and a first reinforcing member dividing a space surrounded by the apron reinforcement and the cowl side panel back and forth.Type: ApplicationFiled: January 5, 2017Publication date: September 13, 2018Inventors: Takeshi Nakamura, Keizo Kawasaki, Shigeaki Watanabe, Kenji Maruyama
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Publication number: 20180244315Abstract: To provide a vehicle front body structure including a side sill that extends in a vehicle front-rear direction and is located behind a position where a front wheel is disposed and a torque box extending from a front end of the side sill toward an inside in a vehicle width direction. In the vehicle front body structure, the torque box includes an upper surface portion disposed at a substantially same height as an upper surface of the side sill and a lower surface portion disposed at a substantially same height as a lower surface of the side sill. A reinforcing member is provided in an internal space surrounded by the upper surface portion and the lower surface portion of the torque box.Type: ApplicationFiled: January 5, 2017Publication date: August 30, 2018Inventors: Takeshi Nakamura, Keizo Kawasaki, Kazuki Yamauchi
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Patent number: 10035543Abstract: There is provided an automotive vehicle which comprises a side door, impact bars provided at the side door, a side inner panel, a first reinforcing member provided to extend along a rear side of a peripheral portion of an entrance portion and joined to an outside of the side inner panel so as to form a first closed cross section together with the side inner panel, and second reinforcing members joined to an outside of the first reinforcing member so as to form second closed cross sections together with the first reinforcing member, the second reinforcing members being configured to overlap with the impact bars, in a side view, when the side door closes the entrance portion.Type: GrantFiled: August 11, 2016Date of Patent: July 31, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Kenichi Sato, Keizo Kawasaki, Yuuichi Sugimura
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Patent number: 9963172Abstract: A body structure of a vehicle includes a first panel and a second panel that form a closed cross-sectional portion, a partitioning panel that partitions the closed cross-sectional portion, and a reinforcement member disposed between the first panel and the partitioning panel, and includes a panel joining portion joined to the first panel, and a flange portion joined to the partitioning panel. A joining portion formed by the reinforcement member includes a rigid coupling portion in which the first panel and the panel joining portion are coupled to each other while being in contact with each other, and a flexible coupling portion in which the partitioning panel and the flange portion are coupled, with a damping member being provided therebetween. The partitioning panel includes an extended portion that extends from a vicinity of the flexible coupling portion toward the second panel and is joined to the second panel.Type: GrantFiled: August 15, 2016Date of Patent: May 8, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Akira Iyoshi, Keizo Kawasaki, Takeshi Nakamura
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Publication number: 20170305469Abstract: A body structure of a vehicle includes a first panel and a second panel that form a closed cross-sectional portion, a partitioning panel that partitions the closed cross-sectional portion, and a reinforcement member disposed between the first panel and the partitioning panel, and includes a panel joining portion joined to the first panel, and a flange portion joined to the partitioning panel. A joining portion formed by the reinforcement member includes a rigid coupling portion in which the first panel and the panel joining portion are coupled to each other while being in contact with each other, and a flexible coupling portion in which the partitioning panel and the flange portion are coupled, with a damping member being provided therebetween. The partitioning panel includes an extended portion that extends from a vicinity of the flexible coupling portion toward the second panel and is joined to the second panel.Type: ApplicationFiled: August 15, 2016Publication date: October 26, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Akira IYOSHI, Keizo KAWASAKI, Takeshi NAKAMURA
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Publication number: 20170305470Abstract: A vehicle-body structure of a vehicle includes a first frame forming a closed cross-section portion, a reinforcing member disposed in the closed cross-section portion and connected to the first frame, and another vehicle-body member connected to an outer surface of the first frame. A connection portion of the first frame and the reinforcing member includes a rigid joint portion where the first frame and the reinforcing member are joined, and a flexible joint portion where the first frame and the reinforcing member are joined, with a damper member being disposed therebetween. The other vehicle-body member is connected to the first frame in a manner such that at least a part of the other vehicle-body member overlaps the flexible joint portion in a thickness direction of the first frame, and has a high rigidity portion that enhances rigidity at the part that overlaps the flexible joint portion.Type: ApplicationFiled: August 8, 2016Publication date: October 26, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Kenichi SATO, Keizo KAWASAKI, Takeshi NAKAMURA
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Publication number: 20170297628Abstract: A body structure of a vehicle includes: a first panel and a second panel forming a closed cross-sectional portion; a partition panel; a first reinforcement body disposed between the first panel and the partition panel, and includes a first panel joint portion joined to the first panel, and a first flange portion joined to the partition panel; and a second reinforcement body which is disposed between the second panel and the partition panel, and includes a second panel joint portion joined to the second panel, and a second flange portion joined to the partition panel. A joint portion includes a rigid coupling portion in which the first panel and the first panel joint portion are coupled while being in contact with each other, and a flexible coupling portion in which the partition panel and the first flange portion are coupled to each other while interposing a damping member therebetween.Type: ApplicationFiled: August 15, 2016Publication date: October 19, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Akira IYOSHI, Keizo KAWASAKI, Takeshi NAKAMURA
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Patent number: 9783239Abstract: A vehicle body side part structure for a vehicle includes a side sill connected to the lower part of a pillar, and a partition member provided within the side sill. The partition member includes a partition wall for dividing a closed sectional space of the side sill in the vehicle front-rear direction, and joint flange joined to the inner surface of a side sill inner member. The partition wall includes a ridge extending from a side of the side sill outer reinforcement to a side of the side sill inner member and connected to the joint flange. A widening portion is formed at an end of on the ridge close to the joint flange. This configuration makes it possible to improve the load transmission performance at the time of a side collision of the vehicle.Type: GrantFiled: December 4, 2014Date of Patent: October 10, 2017Assignee: Mazda Motor CorporationInventors: Akira Iyoshi, Shigeaki Watanabe, Keizo Kawasaki, Takahiro Kageyama
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Publication number: 20170203794Abstract: A front vehicle-body structure of a vehicle comprises a hinge pillar, an apron reinforcement, a suspension housing, a side sill, and a connecting member which connects the apron reinforcement to the hinge pillar in a brace shape and connecting the apron reinforcement to a front portion of the side sill. The connecting member includes first and second bending portions which are positioned between a rear face portion and a side face portion and between a forward flange and the side face portion, respectively, and the apron reinforcement and the side sill are continuous to each other via at least one of the first and second bending portions.Type: ApplicationFiled: December 21, 2016Publication date: July 20, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Takeshi NAKAMURA, Keizo KAWASAKI
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Publication number: 20170203793Abstract: There are provided a hinge pillar extending in a vehicle vertical direction, an apron reinforcement extending forward from the hinge pillar, a connecting member provided below the apron reinforcement and connecting the hinge pillar and the apron reinforcement in a brace shape, a dash panel provided in back of the connecting member and extending in a vehicle width direction, a wheel house provided in front of the dash panel, and an apron rear panel provided on an inward side, in the vehicle width direction, of and closely to the connecting member and connecting a rear portion of the wheel house and the dash panel.Type: ApplicationFiled: December 21, 2016Publication date: July 20, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Takeshi NAKAMURA, Keizo KAWASAKI, Hidenori MATSUOKA, Kenji MARUYAMA
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Patent number: 9616936Abstract: There are provided a pair of roof rails, a roof panel, a front header, a pair of front pillars, a windshield provided between the front header and the front pillars, a front inclination roof reinforcement extending rearward, a front portion of which is joined to the front header, and partition members provided inside the front header at respective positions which do not overlap with, in a vehicle width direction, the front inclination roof reinforcement. Thereby, vertical vibrations of the front header caused by vertical vibrations of the windshield can be suppressed with a light structure, so that the comfortability of the ride (the vibration damping performance) can be improved.Type: GrantFiled: February 8, 2016Date of Patent: April 11, 2017Assignee: MAZDA MOTOR CORPORATIONInventors: Takeshi Nakamura, Keizo Kawasaki, Kenichi Sato