Patents by Inventor Akio Okayama
Akio Okayama 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: 10953735Abstract: In a motor vehicle having an opening 1 through an upper or lateral side of the vehicle cabin, a return portion 40c extending toward the inside of the vehicle cabin and the front of the vehicle from a region spaced rearward from the rear edge of the opening 1 is formed to return travel wind toward the front of the vehicle.Type: GrantFiled: October 2, 2017Date of Patent: March 23, 2021Assignees: MAZDA MOTOR CORPORATION, Nishikawa Rubber Co., Ltd.Inventors: Tomoki Takahashi, Miwa Shinohara, Yoshihiko Horita, Tatsuo Koibuchi, Kazuaki Kikumitsu, Tomohiro Komaji, Sachi Matsui, Daisuke Nakazato, Akio Okayama
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Patent number: 10843544Abstract: Corner portions of an upper edge of the rear-side roof 24 close to the side windows protrude toward a front of the vehicle beyond a rear frame portion of the associated side window. Pillars are positioned on the respective corner portions inside the vehicle. Weatherstrips 34 each include a lip portion 34b covering an upper end portion of the associated pillar from outside of the vehicle while the roof is closed. Sealing members 40 are respectively provided on the inside of the corner portions. An extended sealing portion 40b extends from each sealing member 40. The extended sealing portion 40b blocks a gap, formed between the associated corner portion and the associated pillar and intended for the lip portion 34b, while the front-side roof is open. The lip portion 34b of the weatherstrip 34 is sandwiched between the extended sealing portion 40b and the pillar while the roof is closed.Type: GrantFiled: October 2, 2017Date of Patent: November 24, 2020Assignees: MAZDA MOTOR CORPORATION, Nishikawa Rubber Co., Ltd.Inventors: Tomoki Takahashi, Miwa Shinohara, Yoshihiko Horita, Tatsuo Koibuchi, Kazuaki Kikumitsu, Tomohiro Komaji, Sachi Matsui, Daisuke Nakazato, Akio Okayama
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Publication number: 20190193543Abstract: Corner portions of an upper edge of the rear-side roof 24 close to the side windows protrude toward a front of the vehicle beyond a rear frame portion of the associated side window. Pillars are positioned on the respective corner portions inside the vehicle. Weatherstrips 34 each include a lip portion 34b covering an upper end portion of the associated pillar from outside of the vehicle while the roof is closed. Sealing members 40 are respectively provided on the inside of the corner portions. An extended sealing portion 40b extends from each sealing member 40. The extended sealing portion 40b blocks a gap, formed between the associated corner portion and the associated pillar and intended for the lip portion 34b, while the front-side roof is open. The lip portion 34b of the weatherstrip 34 is sandwiched between the extended sealing portion 40b and the pillar while the roof is closed.Type: ApplicationFiled: October 2, 2017Publication date: June 27, 2019Applicants: MAZDA MOTOR CORPORATION, Nishikawa Rubber Co., Ltd.Inventors: Tomoki TAKAHASHI, Miwa SHINOHARA, Yoshihiko HORITA, Tatsuo KOIBUCHI, Kazuaki KIKUMITSU, Tomohiro KOMAJI, Sachi MATSUI, Daisuke NAKAZATO, Akio OKAYAMA
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Publication number: 20190193539Abstract: In a motor vehicle having an opening 1 through an upper or lateral side of the vehicle cabin, a return portion 40c extending toward the inside of the vehicle cabin and the front of the vehicle from a region spaced rearward from the rear edge of the opening 1 is formed to return travel wind toward the front of the vehicle.Type: ApplicationFiled: October 2, 2017Publication date: June 27, 2019Applicants: MAZDA MOTOR CORPORATION, Nishikawa Rubber Co., Ltd.Inventors: Tomoki TAKAHASHI, Miwa SHINOHARA, Yoshihiko HORITA, Tatsuo KOIBUCHI, Kazuaki KIKUMITSU, Tomohiro KOMAJI, Sachi MATSUI, Daisuke NAKAZATO, Akio OKAYAMA
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Patent number: 9994096Abstract: There are provided a front weather strip provided between a first roof member and a second roof member, a rear weather strip provided between the second roof member and a third roof member, a roof-side weather strip provided at the second roof member, and a vertical weather strip. Plural partition walls which form the plural vertical flow passages are provided at the vertical weather strip, and a first flow passage for distributing water from the front weather strip to plural vertical flow passages of the vertical weather strip by way of the roof-side weather strip and a second flow passage for distributing water from the rear weather strip to at least one of plural vertical flow passages of the vertical weather strip are provided.Type: GrantFiled: March 15, 2017Date of Patent: June 12, 2018Assignees: MAZDA MOTOR CORPORATION, NISHIKAWA RUBBER CO., LTDInventors: Miwa Shinohara, Keiichiro Nishiura, Hiromu Oda, Akio Okayama
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Patent number: 9975414Abstract: There are provided a pillar attached to a vehicle-body side separately from a roof, a pillar-side weather strip provided at the pillar, a vehicle-body-side weather strip provided at a vehicle-body side of a lower portion of the pillar, and an engagement portion provided at a lower end portion of the pillar-side weather strip, the engagement portion being configured to engage from an inward side, in a vehicle width direction, of the vehicle-body-side weather strip. The vehicle-body-side weather strip comprises a guide portion which guides the engagement portion of the pillar-side weather strip inward and downward, an engaged portion positioned at a lower portion of the guide portion, and a wall portion which contacts a hanging piece provided at the lower end portion of the pillar-side weather strip from an outward side in the vehicle width direction.Type: GrantFiled: March 15, 2017Date of Patent: May 22, 2018Assignees: MAZDA MOTOR CORPORATION, NISHIKAWA RUBBER CO., LTDInventors: Miwa Shinohara, Keiichiro Nishiura, Hiromu Oda, Akio Okayama
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Publication number: 20170267088Abstract: There are provided a pillar attached to a vehicle-body side separately from a roof, a pillar-side weather strip provided at the pillar, a vehicle-body-side weather strip provided at a vehicle-body side of a lower portion of the pillar, and an engagement portion provided at a lower end portion of the pillar-side weather strip, the engagement portion being configured to engage from an inward side, in a vehicle width direction, of the vehicle-body-side weather strip. The vehicle-body-side weather strip comprises a guide portion which guides the engagement portion of the pillar-side weather strip inward and downward, an engaged portion positioned at a lower portion of the guide portion, and a wall portion which contacts a hanging piece provided at the lower end portion of the pillar-side weather strip from an outward side in the vehicle width direction.Type: ApplicationFiled: March 15, 2017Publication date: September 21, 2017Applicants: MAZDA MOTOR CORPORATION, NISHIKAWA RUBBER CO., LTDInventors: Miwa SHINOHARA, Keiichiro NISHIURA, Hiromu ODA, Akio OKAYAMA
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Publication number: 20170267087Abstract: There are provided a front weather strip provided between a first roof member and a second roof member, a rear weather strip provided between the second roof member and a third roof member, a roof-side weather strip provided at the second roof member, and a vertical weather strip. Plural partition walls which form the plural vertical flow passages are provided at the vertical weather strip, and a first flow passage for distributing water from the front weather strip to plural vertical flow passages of the vertical weather strip by way of the roof-side weather strip and a second flow passage for distributing water from the rear weather strip to at least one of plural vertical flow passages of the vertical weather strip are provided.Type: ApplicationFiled: March 15, 2017Publication date: September 21, 2017Applicants: MAZDA MOTOR CORPORATION, NISHIKAWA RUBBER CO., LTDInventors: Miwa SHINOHARA, Keiichiro NISHIURA, Hiromu ODA, Akio OKAYAMA
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Patent number: 8667740Abstract: A weather strip mounted along a circumferential edge of a door opening of an automobile body comprises: an installation base member having a substantially U-shape in cross-section; and a hollow seal member provided on an outer-cabin side of the installation base member, which makes elastic contact with a protrudingly curved surface having a substantially U-shape in cross-section of the door; in which the hollow seal member includes: a first hollow wall having a substantially reversed V-shape in cross-section and a second hollow wall having a substantially V-shape in cross-section, which are connected with each other; a seal wall swelled and curved toward an inner side of the hollow seal member; and a protrusion protrudingly provided toward the outer-cabin side in succession to the seal wall, which makes elastic contact with the protrudingly curved surface.Type: GrantFiled: March 18, 2013Date of Patent: March 11, 2014Assignee: Nishikawa Rubber Co., Ltd.Inventors: Yutaka Hashimoto, Akio Okayama, Ayako Teishi
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Patent number: 7775580Abstract: A door glass guiding structure is provided which can be constituted by using a glass guide member made from a low-priced material such as rolled sheet, and is capable of satisfactorily maintaining required functions. The door glass guiding structure 3 comprises the glass guide member 10 which is disposed between two door glasses supported side by side on a door for example, the side door 2) of the vehicle so as to guide the vertical movement of at least one of the door glasses, the core bracket 21 which is constituted of a member different from the glass guide member 10 and is mounted on top end of the glass guide member 10 so as to extend the length thereof upward, and the guide upper end seal member 13 attached to cover the external surface of the core bracket 21 so as to provide water-tight sealing on the top ends of the two door glasses.Type: GrantFiled: February 24, 2006Date of Patent: August 17, 2010Assignees: Mazda Motor Corporation, Ishizaki Honten Co., Ltd., Katayama Kogyo Co., Ltd., Nishikawa Rubber Co., Ltd.Inventors: Tomomi Miyamoto, Norifumi Inoue, Yukihiro Moriyama, Yoshihiro Kinoshita, Tooru Waki, Kazuhiro Takagaki, Akio Okayama
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Publication number: 20080252097Abstract: A door glass guiding structure is provided which can be constituted by using a glass guide member made from a low-priced material such as rolled sheet, and is capable of satisfactorily maintaining required functions. The door glass guiding structure 3 comprises the glass guide member 10 which is disposed between two door glasses supported side by side on a door for example, the side door 2) of the vehicle so as to guide the vertical movement of at least one of the door glasses, the core bracket 21 which is constituted of a member different from the glass guide member 10 and is mounted on top end of the glass guide member 10 so as to extend the length thereof upward, and the guide upper end seal member 13 attached to cover the external surface of the core bracket 21 so as to provide water-tight sealing on the top ends of the two door glasses.Type: ApplicationFiled: February 24, 2006Publication date: October 16, 2008Applicant: Nishikawa Rubber Co., Ltd.Inventors: Tomomi Miyamoto, Norifumi Inoue, Yukihiro Moriyama, Yoshihiro Kinoshita, Tooru Waki, Kazuhiro Takagaki, Akio Okayama
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Patent number: 6423158Abstract: A roller bearing which can sufficiently ensure an endurance life of rollers even under conditions where debris contamination and temperature rise are large. As the material for an outer ring, inner ring and tapered rollers, a steel in which the Si and-Mn contents are increased is used, and after it has been treated to carbo-nitriding, it is quenched to adjust the amount of retained austenite in the carbo-nitrided layer formed on the surface layer of each part to 20-50 vol %. Thus, it is possible to prevent surface peeling resulting from initiation and propagation of cracks,. thereby greatly improving the endurance life of the rolling bearing under conditions in which debris contamination or temperature rise at bearing portions is large.Type: GrantFiled: December 15, 1999Date of Patent: July 23, 2002Assignee: NTN CorporationInventors: Kikuo Maeda, Hirokazu Nakashima, Akio Okayama
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Patent number: 6306227Abstract: In a rolling bearing having a rolling bearing ring and a rolling element of at least 20 mm in diameter, at least one of the rolling bearing ring and the rolling element consists of carburized or carbonitrided steel containing at least 0.2 wt % and not more than 0.35 wt % of carbon and at least 2.2 wt % and not more than 3.6 wt % of Ni. Thus obtained is a rolling bearing capable of reducing the material cost and increasing the fatigue life or reducing the carburizing time by ensuring surface hardness and optimizing the case depth.Type: GrantFiled: December 13, 1999Date of Patent: October 23, 2001Assignees: NTN Corporation, Kawasaki Steel CorporationInventors: Akio Okayama, Hiroshi Murakami, Kikuo Maeda, Takuya Atsumi, Toshiyuki Hoshino, Keniti Amano
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Publication number: 20010015240Abstract: In a rolling bearing having a rolling bearing ring and a rolling element of at least 20 mm in diameter, at least one of the rolling bearing ring and the rolling element consists of carburized or carbonitrided steel containing at least 0.2 wt % and not more than 0.35 wt % of carbon and at least 2.2 wt % and not more than 3.6 wt % of Ni. Thus obtained is a rolling bearing capable of reducing the material cost and increasing the fatigue life or reducing the carburizing time by ensuring surface hardness and optimizing the case depth.Type: ApplicationFiled: December 13, 1999Publication date: August 23, 2001Inventors: AKIO OKAYAMA, HIROSHI MURAKAMI, KIKUO MAEDA, TAKUYA ATSUMI, TOSHIYUKI HOSHINO, KENITI AMANO
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Patent number: 5150974Abstract: The grease-sealed bearing is formed on rolling surfaces (4) of rings (2, 2) of the bearing (1) with oxide layers (5) having a thickness of 0.1-2.5 microns, the development of peculiar peeling on the rolling surfaces of the bearing can be prevented. If it is used as a bearing for an alternator or the like, its duration can be increased.Type: GrantFiled: September 10, 1990Date of Patent: September 29, 1992Assignee: NTN CorporationInventors: Kenji Tamada, Hirokazu Nakajima, Akio Okayama, Takahiro Mizutani
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Patent number: 4236925Abstract: A method of producing a sintered material having a high wearing resistance and damping capacity by mixing 5-30 wt. % of a powdery metal selected from the group consisting of lead, magnesium and graphite with the remainder of a powdery metal selected from the group consisting of iron, copper, aluminum, cast iron and alloys thereof, compression-molding the mixture, subjecting the same to plastic treatment and sintering the same by heating to a temperature above a recrystallization point of the matrix metal, and the sintered material thus produced.Type: GrantFiled: August 10, 1978Date of Patent: December 2, 1980Assignee: Hitachi, Ltd.Inventors: Jin Onuke, Masateru Suwa, Ko Soeno, Akio Okayama, Masatoshi Tsuchiya, Hisakiti Onodera