Patents by Inventor Katsutoshi Nakamura
Katsutoshi Nakamura 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: 20240035401Abstract: A lower link (6) is provided with an oil hole (30) in a crank pin bearing portion (11) in order to supply a jet of oil to a connecting portion between an upper pin (4) and an upper link (3). Oil hole (30) is composed of a first oil hole (31) linearly extending from the inner peripheral surface of crank pin bearing portion (11) outwardly in the radial direction, and a second oil hole (32) linearly extending from the outer surface of lower link (6) so as to intersect a distal end portion of first oil hole (31). An inclination angle (?) of first oil hole (31) with a divided surface (14) set as a reference becomes relatively small, and hence the position of an oil inlet (31b) involving a problem of stress concentration becomes closer to divided surface (14) exhibiting a relatively low stress. Consequently, the stress concentration at oil inlet (31b) is alleviated.Type: ApplicationFiled: September 15, 2020Publication date: February 1, 2024Inventors: Hiroki ICHIHARA, Tomoya TOJO, Kensuke IKEHARA, Takashi TANABE, Katsutoshi NAKAMURA
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Patent number: 11762228Abstract: A display device in the present disclosure includes: a display panel having a display on a front surface; a flexible circuit board connected to the display panel; and a panel chassis supporting a rear surface of the display panel. On an outer side of a lateral end of the display panel, the panel chassis has a flexible circuit board guide projected from the rear surface side of the display panel to the front surface side thereof. The flexible circuit board is provided along the flexible circuit board guide in a manner to extend on an outer side thereof.Type: GrantFiled: October 27, 2022Date of Patent: September 19, 2023Assignee: SHARP KABUSHIKI KAISHAInventor: Katsutoshi Nakamura
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Publication number: 20230135713Abstract: A display device in the present disclosure includes: a display panel having a display on a front surface; a flexible circuit board connected to the display panel; and a panel chassis supporting a rear surface of the display panel. On an outer side of a lateral end of the display panel, the panel chassis has a flexible circuit board guide projected. from the rear surface side of the display panel to the front surface side thereof. The flexible circuit board is provided along the flexible circuit board guide in a manner to extend on an outer side thereof.Type: ApplicationFiled: October 27, 2022Publication date: May 4, 2023Inventor: Katsutoshi NAKAMURA
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Patent number: 10190491Abstract: When a stopper portion is brought into abutment against body high-compression-ratio side stopper portion, when viewed in the control shaft axial direction, it is configured that the distance between body high-compression-ratio side stopper surface and control-shaft high-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center. Similarly, when a stopper portion is brought into abutment against body low-compression-ratio side stopper portion, when viewed in the control shaft axial direction, the distance between body low-compression-ratio side stopper surface and control-shaft, low-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center.Type: GrantFiled: April 3, 2015Date of Patent: January 29, 2019Assignee: Nissan Motor Co., Ltd.Inventors: Katsutoshi Nakamura, Masayoshi Tsubokawa
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Patent number: 10054064Abstract: An actuator mounting structure of a variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotational position of a control shaft; an actuator arranged to drivingly rotate the control shaft, the actuator being fixed on an actuator mounting portion provided to a side wall of a main body of the engine by using a plurality of fixing bolts, and a rigidity improvement section arranged to improve a mounting rigidity of the actuator to the actuator mounting portion, and which is provided within an inter-bolt distance between two bolts of the plurality of the fixing bolts, which are located on the both sides in a direction of a crank shaft.Type: GrantFiled: June 3, 2013Date of Patent: August 21, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
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Patent number: 10001056Abstract: It has variable compression ratio mechanism (10) that changes engine compression ratio depending on the rotational position of first control shaft (14). First control shaft (14) and second control shaft, which is connected to a motor, are coupled together by lever (24) of coupling mechanism (20). First arm portion (25) of first control shaft (14) and one end of lever (24) are rotatably coupled together by first coupling pin (26). When viewed in the axial direction of this first coupling pin (26), at least at a given compression ratio position, first coupling pin (26) is arranged at a position away from bearing cap (30) that is for rotatably supporting first control shaft (14).Type: GrantFiled: December 16, 2013Date of Patent: June 19, 2018Assignee: NISSAN MOTOR CO., LTD.Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura, Takeharu Sugita
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Publication number: 20180142618Abstract: When a stopper portion is brought into abutment against body high-compression-ratio side stopper portion, when viewed in the control shaft axial direction, it is configured that the distance between body high-compression-ratio side stopper surface and control-shaft high-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center. Similarly, when a stopper portion is brought into abutment against body low-compression-ratio side stopper portion, when viewed in the control shaft axial direction, the distance between body low-compression-ratio side stopper surface and control-shaft, low-compression-ratio side stopper surface becomes relatively longer as being closer to the control shaft rotation center.Type: ApplicationFiled: April 3, 2015Publication date: May 24, 2018Inventors: Katsutoshi Nakamura, Masayoshi Tsubokawa
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Patent number: 9863311Abstract: A variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotation position of a first control shaft; an actuator arranged to vary and hold the rotation position of the first control shaft; and a link mechanism arranged to connect the actuator and the first control shaft, the link mechanism including; a second control shaft, a lever, a first arm portion, a first link pin, a second arm portion, and a second link pin, the first link pin having a diameter larger than a diameter of the second link pin.Type: GrantFiled: September 2, 2014Date of Patent: January 9, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
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Publication number: 20170284289Abstract: A variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotation position of a first control shaft; an actuator arranged to vary and hold the rotation position of the first control shaft; and a link mechanism arranged to connect the actuator and the first control shaft, the link mechanism including; a second control shaft, a lever, a first arm portion, a first link pin, a second arm portion, and a second link pin, the first link pin having a diameter larger than a diameter of the second link pin.Type: ApplicationFiled: September 2, 2014Publication date: October 5, 2017Applicant: Nissan Motor Co., Ltd.Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
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Patent number: 9476366Abstract: There are provided a variable compression-ratio mechanism (20) capable of varying an engine compression ratio in accordance with a rotational position of a control shaft (24); a speed reducer (44) configured to reduce in speed a rotational power of an actuator and transmit the speed-reduced rotational power to the control shaft (24); and a speed-reducer accommodating case (43) accommodating the speed reducer (44). An input shaft of the speed reducer (44) which is connected to the actuator has a shaft center line extending along a horizontal direction, and at least a part of the input shaft is kept under a lubricating oil retained in the speed-reducer accommodating case (43). The input shaft of the speed reducer (44) is swung by a predetermined swing angle to avoid inadequate lubrication of the input shaft of the speed reducer (44), during an operating state where the engine compression ratio is maintained constant.Type: GrantFiled: June 3, 2013Date of Patent: October 25, 2016Assignee: NISSAN MOTOR CO., LTD.Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
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Publication number: 20150354448Abstract: It has variable compression ratio mechanism (10) that changes engine compression ratio depending on the rotational position of first control shaft (14). First control shaft (14) and second control shaft, which is connected to a motor, are coupled together by lever (24) of coupling mechanism (20). First arm portion (25) of first control shaft (14) and one end of lever (24) are rotatably coupled together by first coupling pin (26). When viewed in the axial direction of this first coupling pin (26), at least at a given compression ratio position, first coupling pin (26) is arranged at a position away from bearing cap (30) that is for rotatably supporting first control shaft (14).Type: ApplicationFiled: December 16, 2013Publication date: December 10, 2015Inventors: Ryosuke HIYOSHI, Katsutoshi NAKAMURA, Takeharu SUGITA
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Patent number: 9169775Abstract: A multi-link internal combustion engine generally includes a cylinder block, an oil pan mounted to the undersurface of the cylinder block to define a crank chamber, the oil pan being formed with a shallow bottom portion and a deep bottom portion for storing oil. The multi-link internal combustion engine further includes a multi-link, piston-crank mechanism disposed in the crank chamber, a pivotal link member of the piston-crank mechanism pivotal about a pivotal fulcrum located on the side of oil pan; and an oil guide wall provided on the shallow bottom portion in the crank chamber for guiding the oil displaced due to the movement of the pivotal link member to the side of deep bottom portion.Type: GrantFiled: April 3, 2013Date of Patent: October 27, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Yusuke Takagi, Yoshiaki Tanaka, Katsutoshi Nakamura
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Publication number: 20150204251Abstract: There are provided a variable compression-ratio mechanism (20) capable of varying an engine compression ratio in accordance with a rotational position of a control shaft (24); a speed reducer (44) configured to reduce in speed a rotational power of an actuator and transmit the speed-reduced rotational power to the control shaft (24); and a speed-reducer accommodating case (43) accommodating the speed reducer (44). An input shaft of the speed reducer (44) which is connected to the actuator has a shaft center line extending along a horizontal direction, and at least a part of the input shaft is kept under a lubricating oil retained in the speed-reducer accommodating case (43). The input shaft of the speed reducer (44) is swung by a predetermined swing angle to avoid inadequate lubrication of the input shaft of the speed reducer (44), during an operating state where the engine compression ratio is maintained constant.Type: ApplicationFiled: June 3, 2013Publication date: July 23, 2015Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
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Publication number: 20150176507Abstract: An actuator mounting structure of a variable compression ratio internal combustion engine includes: a variable compression ratio mechanism arranged to vary an engine compression ratio in accordance with a rotational position of a control shaft; an actuator arranged to drivingly rotate the control shaft, the actuator being fixed on an actuator mounting portion provided to a side wall of a main body of the engine by using a plurality of fixing bolts, and a rigidity improvement section arranged to improve a mounting rigidity of the actuator to the actuator mounting portion, and which is provided within an inter-bolt distance between two bolts of the plurality of the fixing bolts, which are located on the both sides in a direction of a crank shaft.Type: ApplicationFiled: June 3, 2013Publication date: June 25, 2015Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
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Patent number: 8881695Abstract: A variable compression ratio internal combustion engine includes a variable compression ratio mechanism, an actuator and a linking mechanism. The actuator is varies and maintains a rotational position of the first control shaft. The linking mechanism includes a second control shaft and a lever. The second control shaft is selectively turned by the actuator. The lever links the second control shaft to the first control shaft such that transference of vibration of the first control shaft to the second control shaft is suppressed. The first control shaft is pivotally linked to a first end of the lever by a first linking pin. The second control shaft is pivotally linked to a second end of the lever by a second linking pin.Type: GrantFiled: April 3, 2013Date of Patent: November 11, 2014Assignee: Nissan Motor Co., Ltd.Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
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Publication number: 20130306035Abstract: A variable compression ratio internal combustion engine includes a variable compression ratio mechanism, an actuator and a linking mechanism. The actuator is varies and maintains a rotational position of the first control shaft. The linking mechanism includes a second control shaft and a lever. The second control shaft is selectively turned by the actuator. The lever links the second control shaft to the first control shaft such that transference of vibration of the first control shaft to the second control shaft is suppressed. The first control shaft is pivotally linked to a first end of the lever by a first linking pin. The second control shaft is pivotally linked to a second end of the lever by a second linking pin.Type: ApplicationFiled: April 3, 2013Publication date: November 21, 2013Applicant: Nissan Motor Co., Ltd.Inventors: Ryosuke HIYOSHI, Katsutoshi NAKAMURA
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Publication number: 20130263816Abstract: A multi-link internal combustion engine generally includes a cylinder block, an oil pan mounted to the undersurface of the cylinder block to define a crank chamber, the oil pan being formed with a shallow bottom portion and a deep bottom portion for storing oil. The multi-link internal combustion engine further includes a multi-link, piston-crank mechanism disposed in the crank chamber, a pivotal link member of the piston-crank mechanism pivotal about a pivotal fulcrum located on the side of oil pan; and an oil guide wall provided on the shallow bottom portion in the crank chamber for guiding the oil displaced due to the movement of the pivotal link member to the side of deep bottom portion.Type: ApplicationFiled: April 3, 2013Publication date: October 10, 2013Applicant: Nissan Motor Co., Ltd.Inventors: Yusuke Takagi, Yoshiaki Tanaka, Katsutoshi Nakamura
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Publication number: 20080202068Abstract: A packaging object supplying apparatus for supplying a packaging object to a packaging unit for packaging the packaging object into a predetermined fashion and specifically, a packaging object supplying apparatus comprising a packaging object combining portion for forming a combination of the packaging objects by combining two or more kinds of the packaging objects by a predetermined quantity in a predetermined array and a packaging object introducing portion for introducing the packaging objects combined by the packaging object combining portion to the packaging unit, a boxing apparatus comprising foldable box body supplying means, opening forming means, box body holding means, packaging object loading means, and lid forming means, a box body supplying apparatus for supplying a box body to the boxing apparatus.Type: ApplicationFiled: April 28, 2008Publication date: August 28, 2008Inventors: Haruo Ichikawa, Makoto Shimizu, Kazuyuki Kosemura, Akira Wakabayashi, Katsutoshi Nakamura, Masaharu Minagi, Minoru Tamura, Seiichi Yamashita, Toshihide Sasaki
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Patent number: 7370456Abstract: A packaging object supplying apparatus for supplying a packaging object to a packaging unit for packaging the packaging object into a predetermined fashion and specifically, a packaging object supplying apparatus comprising a packaging object combining portion for forming a combination of the packaging objects by combining two or more kinds of the packaging objects by a predetermined quantity in a predetermined array and a packaging object introducing portion for introducing the packaging objects combined by the packaging object combining portion to the packaging unit, a boxing apparatus comprising foldable box body supplying means, opening forming means, box body holding means, packaging object loading means, and lid forming means, a box body supplying apparatus for supplying a box body to the boxing apparatus.Type: GrantFiled: May 9, 2003Date of Patent: May 13, 2008Assignee: FUJIFILM CorporationInventors: Haruo Ichikawa, Makoto Shimizu, Kazuyuki Kosemura, Akira Wakabayashi, Katsutoshi Nakamura, Masaharu Minagi, Minoru Tamura, Seiichi Yamashita, Toshihide Sasaki
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Patent number: 7004534Abstract: A structure of a cowl and its vicinities is provided which is capable of, even in a vehicle which has an open cowl structure, using the open cowl structure as a member which connects the right and left bodies of the vehicle, and at the same time, realizing a structure that is useful for protecting a pedestrian. At the end part of a cowl 12 in the vehicle rear direction, one end of a dash upper panel 16 is connected; its other end extends below the cowl 12 and in the vehicle front direction; from its middle part in the vehicle front-and-rear directions, a cowl cross-member lower 9 extends in the vehicle upper direction; at the upper-end part of the cowl cross-member lower 9, a protrusion portion 25 is formed; and by welding it to a cowl cross-member upper 10, a closed-section portion 27 is formed between them. Herein, the cowl cross-member upper 10 is thinner than the cowl cross-member lower 9.Type: GrantFiled: August 31, 2004Date of Patent: February 28, 2006Assignee: Mazda Motor CorporationInventors: Noboru Yoshii, Yasunori Kageyama, Hiroshi Sogabe, Katsutoshi Nakamura