Patents by Inventor Kazutaka Ishikura
Kazutaka Ishikura 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: 20230264561Abstract: A rear vehicle-body structure absorbs an impact while also accommodating an elongated battery installation and an increase in an amount of batteries installed. The rear vehicle-body structure includes a rear side frame which extends in a vehicle front-rear direction in a vehicle rear portion, a rear-side battery frame which extends in a vehicle width direction in vehicle rear of a battery and in vehicle front of the rear side frame and protects the battery, and a frame bracket which couples the rear side frame with the rear-side battery frame.Type: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Applicant: Mazda Motor CorporationInventors: Eiji KAMEMOTO, Kouji MATSUSHITA, Kazutaka ISHIKURA
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Publication number: 20230264752Abstract: A rear vehicle-body structure absorbs an impact from vehicle rear even when an installed amount of the batteries is increased by including a rear side frame which extends in a vehicle front-rear direction, a rear-side cross member which is arranged such that a front portion of the rear side frame abuts the rear-side cross member from vehicle rear, the rear-side cross member extending in a vehicle width direction, a pair of left and right side sills which are spaced apart, by predetermined distances, from the front portion of the rear side frame to vehicle-width-direction outer sides and extend in the vehicle front-rear direction, and a rear-side battery frame which extends in the vehicle width direction in the vehicle rear of a battery and in vehicle front of the rear side frame. The rear-side battery frame is mounted on the left and right side sills and on the rear-side cross member.Type: ApplicationFiled: February 15, 2023Publication date: August 24, 2023Applicant: Mazda Motor CorporationInventors: Eiji KAMEMOTO, Kouji MATSUSHITA, Kazutaka ISHIKURA
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Patent number: 11345295Abstract: An impact absorbing structure for a vehicle according to the present invention includes: a resin frame member extending in a vehicle front-rear direction and having an opening portion in a surface thereof on one side in a vehicle width direction; and a strut member disposed in the opening portion of the frame member. The frame member includes a frame body having the opening portion, and a rib protruding at least either upward or downward from the frame body and extending in the vehicle front-rear direction. The strut member is disposed between a pair of opening edges for defining an upper edge and a lower edge of the opening portion and at a position abuttable against the paired opening edges, when the frame member is deformed by input of a load at a time of oblique collision from upward or oblique collision from downward.Type: GrantFiled: December 11, 2018Date of Patent: May 31, 2022Assignee: MAZDA MOTOR CORPORATIONInventors: Chikara Kawamura, Tsuyoshi Nishihara, Kazutaka Ishikura, Hiroaki Takeshita, Tsuneki Shimanaka, Taiki Yotsuyanagi, Yoshiaki Murakami
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Publication number: 20210162939Abstract: An impact absorbing structure for a vehicle according to the present invention includes: a resin frame member extending in a vehicle front-rear direction and having an opening portion in a surface thereof on one side in a vehicle width direction; and a strut member disposed in the opening portion of the frame member. The frame member includes a frame body having the opening portion, and a rib protruding at least either upward or downward from the frame body and extending in the vehicle front-rear direction. The strut member is disposed between a pair of opening edges for defining an upper edge and a lower edge of the opening portion and at a position abuttable against the paired opening edges, when the frame member is deformed by input of a load at a time of oblique collision from upward or oblique collision from downward.Type: ApplicationFiled: December 11, 2018Publication date: June 3, 2021Applicant: MAZDA MOTOR CORPORATIONInventors: Chikara KAWAMURA, Tsuyoshi NISHIHARA, Kazutaka ISHIKURA, Hiroaki TAKESHITA, Tsuneki SHIMANAKA, Taiki YOTSUYANAGI, Yoshiaki MURAKAMI
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Publication number: 20200324823Abstract: An impact absorbing structure for a vehicle according to the present invention includes a frame member formed of a resin material. The frame member includes a closed cross sectional portion extending in a vehicle front-rear direction, and a rib protruding at least either upward or downward from the closed cross sectional portion and extending in the vehicle front-rear direction.Type: ApplicationFiled: December 11, 2018Publication date: October 15, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Chikara KAWAMURA, Tsuyoshi NISHIHARA, Kazutaka ISHIKURA, Hiroaki TAKESHITA, Tsuneki SHIMANAKA, Taiki YOTSUYANAGI, Yoshiaki MURAKAMI
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Patent number: 10604094Abstract: An impact absorbing member structure of a vehicle includes: a pair of left and right rear side frames; a pair of left and right crash cans containing a plurality of first carbon fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of rear side frames through the pair of crash cans. Each of the crash cans is formed as an open-section member including: a side wall portion extending in the forward/rearward direction; and a tip end wall portion continuous with the side wall portion and including an attaching portion to which the bumper reinforcement is attached.Type: GrantFiled: November 8, 2016Date of Patent: March 31, 2020Assignee: Mazda Motor CorporationInventors: Chikara Kawamura, Tsuneki Shimanaka, Hiroaki Takeshita, Tsuyoshi Nishihara, Takayuki Kimura, Kazutaka Ishikura
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Publication number: 20180257589Abstract: An impact absorbing member structure of a vehicle includes: a pair of left and right rear side frames; a pair of left and right crash cans containing a plurality of first carbon fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of rear side frames through the pair of crash cans. Each of the crash cans is formed as an open-section member including: a side wall portion extending in the forward/rearward direction; and a tip end wall portion continuous with the side wall portion and including an attaching portion to which the bumper reinforcement is attached.Type: ApplicationFiled: November 8, 2016Publication date: September 13, 2018Applicant: Mazda Motor CorporationInventors: Chikara Kawamura, Tsuneki Shimanaka, Hiroaki Takeshita, Tsuyoshi Nishihara, Takayuki Kimura, Kazutaka Ishikura
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Patent number: 9963024Abstract: A deck cover is openably provided at a vehicle-body rear portion positioned in back of a cabin. A top portion of a rear wheelhouse is provided at the vehicle-body rear portion. This top portion is configured to be displaced upward, relative to a vehicle-body rear end portion, such as a rear bumper or a rear end panel, by vehicle-body deformation caused by a vehicle rear collision. The deck cover is supported at a position of the vehicle-body rear portion which is located vertically above or in front of the top portion of the rear wheelhouse such that the deck cover is elevated in accordance with upward displacement of the top portion when the vehicle-body rear portion receives a rear-collision load.Type: GrantFiled: March 9, 2017Date of Patent: May 8, 2018Assignee: MAZDA MOTOR CORPORATIONInventors: Taichi Hirakawa, Kazutaka Ishikura, Masaki Oda, Takashi Niseki
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Publication number: 20170267083Abstract: A deck cover is openably provided at a vehicle-body rear portion positioned in back of a cabin. A top portion of a rear wheelhouse is provided at the vehicle-body rear portion. This top portion is configured to be displaced upward, relative to a vehicle-body rear end portion, such as a rear bumper or a rear end panel, by vehicle-body deformation caused by a vehicle rear collision. The deck cover is supported at a position of the vehicle-body rear portion which is located vertically above or in front of the top portion of the rear wheelhouse such that the deck cover is elevated in accordance with upward displacement of the top portion when the vehicle-body rear portion receives a rear-collision load.Type: ApplicationFiled: March 9, 2017Publication date: September 21, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Taichi HIRAKAWA, Kazutaka ISHIKURA, Masaki ODA, Takashi NISEKI
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Patent number: 6539823Abstract: In a supporting structure for a brake pedal assembly pivotally mounted for rocking motion on the rear surface of a dash panel of an automobile through a first bracket, a front portion of the first bracket is fixed to the dash panel and the rear end thereof is coupled to a second bracket, fastened to a cowl member in a cabin, so as to be disengageable by the application of a load of automobile collision above a predetermined level. The brake pedal assembly is pivotally mounted for rocking motion to the first bracket. At the lower end of the second bracket, a pedal lever stop is provided which abuts against the rear end of the brake pedal assembly when the first and second brackets are disengaged in an automobile collision so that the brake pedal assembly moves backward. The brake pedal assembly is restrained by abutment on the pedal lever stop against backward movement.Type: GrantFiled: November 27, 2000Date of Patent: April 1, 2003Assignee: Mazda Motor CorporationInventors: Kazunori Tomono, Shuji Sanagi, Kouki Makino, Keisuke Miyoshi, Hideaki Tanaka, Kazutaka Ishikura
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Patent number: 6523892Abstract: A headrest movable frame (2) has an upper frame (2b) which is arranged on the upper end face of a seatback and extends in the widthwise direction of the vehicle body, and side frames (10) which are arranged on the side end faces of the seatback and extend in the up-and-down direction. A lower frame (2c) is axially supported on the side frames (10) at a position below the upper frame (2b). Guide holes (3) linearly move a headrest (1) upward and forward by a backward load acting on the lower portion of the lower frame (2c) of the headrest movable frame (2) in a rear impact collision.Type: GrantFiled: May 16, 2000Date of Patent: February 25, 2003Assignee: Mazda Motor CorporationInventors: Masayuki Kage, Hiroyuki Matsumoto, Kazutaka Ishikura, Takao Fukuda, Toshihiro Ishikawa, Naoki Okano
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Patent number: 6481311Abstract: In a supporting structure for a brake pedal assembly pivotally mounted for rocking motion on the rear surface of a dash panel of an automobile through a first bracket, a front portion of the first bracket is fixed to the dash panel and a rear-end upper portion thereof is coupled to a second bracket fastened to an instrument panel member as a car body member in a cabin so as to be disengageable by the application of a load of automobile collision above a predetermined level. The brake pedal assembly is pivotally mounted for rocking motion to the first bracket. On the underside of the second bracket, an inclined guide surface is provided which abuts against the upper end of the brake pedal assembly when the coupling between the first and second brackets is disengaged in an automobile collision so that the first bracket moves backward together with the brake pedal assembly. The inclined guide surface guides the brake pedal assembly in its downward movement through its abutment against the inclined guide surface.Type: GrantFiled: November 27, 2000Date of Patent: November 19, 2002Inventors: Shuji Sanagi, Kouki Makino, Keisuke Miyoshi, Kazunori Tomono, Hideaki Tanaka, Kazutaka Ishikura