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).

  • Publication number: 20240035401
    Abstract: 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: Application
    Filed: September 15, 2020
    Publication date: February 1, 2024
    Inventors: Hiroki ICHIHARA, Tomoya TOJO, Kensuke IKEHARA, Takashi TANABE, Katsutoshi NAKAMURA
  • Patent number: 11762228
    Abstract: 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: Grant
    Filed: October 27, 2022
    Date of Patent: September 19, 2023
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Katsutoshi Nakamura
  • Publication number: 20230135713
    Abstract: 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: Application
    Filed: October 27, 2022
    Publication date: May 4, 2023
    Inventor: Katsutoshi NAKAMURA
  • Patent number: 10190491
    Abstract: 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: Grant
    Filed: April 3, 2015
    Date of Patent: January 29, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Katsutoshi Nakamura, Masayoshi Tsubokawa
  • Patent number: 10054064
    Abstract: 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: Grant
    Filed: June 3, 2013
    Date of Patent: August 21, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
  • Patent number: 10001056
    Abstract: 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: Grant
    Filed: December 16, 2013
    Date of Patent: June 19, 2018
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura, Takeharu Sugita
  • Publication number: 20180142618
    Abstract: 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: Application
    Filed: April 3, 2015
    Publication date: May 24, 2018
    Inventors: Katsutoshi Nakamura, Masayoshi Tsubokawa
  • Patent number: 9863311
    Abstract: 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: Grant
    Filed: September 2, 2014
    Date of Patent: January 9, 2018
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
  • Publication number: 20170284289
    Abstract: 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: Application
    Filed: September 2, 2014
    Publication date: October 5, 2017
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
  • Patent number: 9476366
    Abstract: 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: Grant
    Filed: June 3, 2013
    Date of Patent: October 25, 2016
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
  • Publication number: 20150354448
    Abstract: 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: Application
    Filed: December 16, 2013
    Publication date: December 10, 2015
    Inventors: Ryosuke HIYOSHI, Katsutoshi NAKAMURA, Takeharu SUGITA
  • Patent number: 9169775
    Abstract: 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: Grant
    Filed: April 3, 2013
    Date of Patent: October 27, 2015
    Assignee: NISSAN MOTOR CO., LTD.
    Inventors: Yusuke Takagi, Yoshiaki Tanaka, Katsutoshi Nakamura
  • Publication number: 20150204251
    Abstract: 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: Application
    Filed: June 3, 2013
    Publication date: July 23, 2015
    Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
  • Publication number: 20150176507
    Abstract: 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: Application
    Filed: June 3, 2013
    Publication date: June 25, 2015
    Inventors: Yoshiaki Tanaka, Ryosuke Hiyoshi, Yusuke Takagi, Katsutoshi Nakamura
  • Patent number: 8881695
    Abstract: 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: Grant
    Filed: April 3, 2013
    Date of Patent: November 11, 2014
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Ryosuke Hiyoshi, Katsutoshi Nakamura
  • Publication number: 20130306035
    Abstract: 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: Application
    Filed: April 3, 2013
    Publication date: November 21, 2013
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Ryosuke HIYOSHI, Katsutoshi NAKAMURA
  • Publication number: 20130263816
    Abstract: 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: Application
    Filed: April 3, 2013
    Publication date: October 10, 2013
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Yusuke Takagi, Yoshiaki Tanaka, Katsutoshi Nakamura
  • Publication number: 20080202068
    Abstract: 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: Application
    Filed: April 28, 2008
    Publication date: August 28, 2008
    Inventors: Haruo Ichikawa, Makoto Shimizu, Kazuyuki Kosemura, Akira Wakabayashi, Katsutoshi Nakamura, Masaharu Minagi, Minoru Tamura, Seiichi Yamashita, Toshihide Sasaki
  • Patent number: 7370456
    Abstract: 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: Grant
    Filed: May 9, 2003
    Date of Patent: May 13, 2008
    Assignee: FUJIFILM Corporation
    Inventors: Haruo Ichikawa, Makoto Shimizu, Kazuyuki Kosemura, Akira Wakabayashi, Katsutoshi Nakamura, Masaharu Minagi, Minoru Tamura, Seiichi Yamashita, Toshihide Sasaki
  • Patent number: 7004534
    Abstract: 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: Grant
    Filed: August 31, 2004
    Date of Patent: February 28, 2006
    Assignee: Mazda Motor Corporation
    Inventors: Noboru Yoshii, Yasunori Kageyama, Hiroshi Sogabe, Katsutoshi Nakamura