Patents by Inventor Yasuyuki Nagashima

Yasuyuki Nagashima 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).

  • Patent number: 10788093
    Abstract: A vibration-damping device (10) of the present invention includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (16). In the partition member, a restriction passage (24) through which the first liquid chamber (14) and the second liquid chamber (15) communicate with each other is formed. The restriction passage includes a first communicating portion (26) which opens to the first liquid chamber, a second communicating portion (27) which opens to the second liquid chamber, and a main body flow passage (25) through which the first communicating portion and the second communicating portion communicate with each other. At least one of the first communicating portion and the second communicating portion includes a plurality of fine holes (26a) which are disposed in a flow passage direction of the main body flow passage.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: September 29, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Akira Ueki, Yuki Satake, Masakazu Nagasawa, Yasuyuki Nagashima, Hideki Sugawara, Shingo Oono
  • Publication number: 20200300331
    Abstract: A restricted passage (24) of the present invention includes a first communication part (26) which is open to a first liquid chamber, a second communication part (27) which is open to a second liquid chamber, and a main body flow path (25) which allows the first communication part (26) and the second communication part (27) to communicate with each other, the main body flow path (25) includes a swirl chamber (34) that generates a swirling flow of the liquid according to a flow velocity of the liquid from the other of the first communication part (26) and the second communication part (27), and the swirl chamber (34) is disposed to be spaced apart from one of the first ID communication part (26) and the second communication part (27).
    Type: Application
    Filed: January 12, 2018
    Publication date: September 24, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuyuki NAGASHIMA, Yuki SATAKE, Akira UEKI
  • Patent number: 10760641
    Abstract: A restricted passageway (24) is provided with a first communication part (26) which is formed in a first barrier wall (34) facing a first liquid chamber and opens to the first liquid chamber, a second communication part (27) which is formed in a second barrier wall (35) facing a second liquid chamber and opens to the second liquid chamber, and a main body flow path (25) that is configured to cause the first communication part (26) and the second communication part (27) to communicate with each other. At least one of the first communication part (26) and the second communication part (27) includes a plurality of fine holes (26a) that pass through the first barrier wall (34) or the second barrier wall (35).
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: September 1, 2020
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Akira Ueki, Yuki Satake, Masakazu Nagasawa, Yasuyuki Nagashima, Hideki Sugawara, Shingo Oono
  • Patent number: 10762784
    Abstract: An obstacle determination system includes an avoidance behavior detection unit configured to detect an avoidance behavior that is a behavior of a vehicle avoiding an obstacle, and an obstacle determination unit configured to determine that the obstacle is present when a road on which the avoidance behavior occurs is not a road on which avoidance of an oncoming vehicle is needed.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: September 1, 2020
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken Ishikawa, Naoki Yoshikawa, Yasuyuki Kusumoto, Kento Nagashima
  • Publication number: 20200080616
    Abstract: A limiting passage (24) includes: a first communication section (26) that opens to a first liquid chamber; a second communication section (27) that opens to a second liquid chamber; and a main body flow passage (25) that is configured to provide communication between the first and second communication sections. At least one of the first and second communication sections includes a plurality of fine holes (31). A vortex chamber (25b) is disposed at a portion of the main body flow passage, which is connected to at least one of the first and second communication sections, is configured to form a swirling flow of liquid according to a flow velocity of liquid flowing from the other of the first and second communication sections, and causes the liquid of the swirling flow to flow out through the plurality of fine holes. A barrier wall (36a) in which the plurality of fine holes are formed extends in a direction across a vortex axis along a central axis (O2) of the vortex chamber.
    Type: Application
    Filed: February 8, 2018
    Publication date: March 12, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Akira UEKI, Yasuyuki NAGASHIMA, Yuki SATAKE
  • Publication number: 20200049223
    Abstract: In a vibration dampening device (10, 110) in an embodiment, a restriction passage (24) includes a first communication portion (26) that is open to a main liquid chamber (14), a second communication portion (27) that is open to an auxiliary liquid chamber (15), and a main body flow path (25) that causes the communication portions to communicate with each other, the first communication portion (26) includes a plurality of pores (31) penetrating a first barrier (28) having a surface (28a) facing the main liquid chamber (14), and a protrusion (40, 140) which protrudes toward the main liquid chamber (14) or the auxiliary liquid chamber (15) is formed over an entire circumference of an opening circumferential edge portion of the pore (31) in the surface (28a).
    Type: Application
    Filed: April 9, 2018
    Publication date: February 13, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Akira UEKI, Yasuyuki NAGASHIMA, Yuki SATAKE
  • Publication number: 20200011396
    Abstract: In the present invention, a restriction passage (24) includes a first communication portion (26) that is open to a first liquid chamber, a second communication portion (27) that is open to a second liquid chamber, and a main body flow path (25) that is configured to cause the first communication portion (26) and the second communication portion (27) to communicate with each other, and in a portion of the main body flow path (25) connected to at least one of the first communication portion (26) and the second communication portion (27), a guide portion (43) that is configured to guide a liquid from the other of the first communication portion (26) and the second communication portion (27) to an opposed surface (34a) that is opposed to one of the first communication portion (26) and the second communication portion (27) in an inner surface of the restriction passage (24) is disposed.
    Type: Application
    Filed: January 15, 2018
    Publication date: January 9, 2020
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Yasuyuki NAGASHIMA, Yuki SATAKE, Akira UEKI
  • Patent number: 10480607
    Abstract: The present invention is a liquid-tight the vibration-damping device (10). In this vibration-damping device (10), a limiting passage (24) includes a main body passage (25) disposed inside a partition member (16), a first communication section (26) configured to communicate the main body passage (25) and a first liquid chamber (14), and a second communication section (27) configured to communicate the main body passage (25) with a second liquid chamber (12). At least one of the first communication section (26) and the second communication section (27) includes openings (31).
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: November 19, 2019
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Masakazu Nagasawa, Akira Ueki, Yasuyuki Nagashima
  • Publication number: 20190287389
    Abstract: Obstacle determination systems and programs detect back-and-forth steering that is behavior of a vehicle for avoiding an obstacle. The systems and programs determine that the obstacle is present between a point where the back-and-forth steering has started and a point where the back-and-forth steering has ended when a steering start road and a steering end road are identical roads. The steering start road is a road where the vehicle is present at a start of the back-and-forth steering. The steering end road is a road where the vehicle is present at an end of the back-and-forth steering.
    Type: Application
    Filed: October 18, 2017
    Publication date: September 19, 2019
    Applicants: AISIN AW CO., LTD., TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Ken ISHIKAWA, Yasuyuki KUSUMOTO, Kento NAGASHIMA
  • Publication number: 20190176605
    Abstract: A vibration-damping device (10) includes a tubular first attachment member (11) that is coupled to any one of a vibration-generating portion and a vibration-receiving portion; a second attachment member (12) that is coupled to the other one of the vibration-generating portion and the vibration-receiving portion; an elastic body (13) that couples both the attachment members (11 and 12) to each other; and a partition member (16) that divides a liquid chamber (19) inside the first attachment member (11) into a main liquid chamber (14) having the elastic body (13) as a part of a wall surface, and a sub-liquid chamber (15). A restriction passage (24) through which the main liquid chamber (14) and the sub-liquid chamber (15) communicate with each other is formed in the partition member (16). The partition member (16) is provided with a flow-speed restraint portion (32) which restrains a flow speed of liquid (L) flowing in the restriction passage (24).
    Type: Application
    Filed: June 22, 2017
    Publication date: June 13, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Akira UEKI, Yuki SATAKE, Masakazu NAGASAWA, Yasuyuki NAGASHIMA, Hideki SUGAWARA, Shingo OONO
  • Publication number: 20190145488
    Abstract: A vibration-damping device (10) of the present invention includes a first attachment member (11), a second attachment member (12), an elastic body (13), and a partition member (16). In the partition member, a restriction passage (24) through which the first liquid chamber (14) and the second liquid chamber (15) communicate with each other is formed. The restriction passage includes a first communicating portion (26) which opens to the first liquid chamber, a second communicating portion (27) which opens to the second liquid chamber, and a main body flow passage (25) through which the first communicating portion and the second communicating portion communicate with each other. At least one of the first communicating portion and the second communicating portion includes a plurality of fine holes (26a) which are disposed in a flow passage direction of the main body flow passage.
    Type: Application
    Filed: June 16, 2017
    Publication date: May 16, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Akira UEKI, Yuki SATAKE, Masakazu NAGASAWA, Yasuyuki NAGASHIMA, Hideki SUGAWARA, Shingo OONO
  • Publication number: 20190107171
    Abstract: A restricted passageway (24) is provided with a first communication part (26) which is formed in a first barrier wall (34) facing a first liquid chamber and opens to the first liquid chamber, a second communication part (27) which is formed in a second barrier wall (35) facing a second liquid chamber and opens to the second liquid chamber, and a main body flow path (25) that is configured to cause the first communication part (26) and the second communication part (27) to communicate with each other. At least one of the first communication part (26) and the second communication part (27) includes a plurality of fine holes (26a) that pass through the first barrier wall (34) or the second barrier wall (35).
    Type: Application
    Filed: June 16, 2017
    Publication date: April 11, 2019
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Akira UEKI, Yuki SATAKE, Masakazu NAGASAWA, Yasuyuki NAGASHIMA, Hideki SUGAWARA, Shingo OONO
  • Publication number: 20180275876
    Abstract: According to one embodiment, there is provided a disk device including a disk medium, a command queue, and a controller. The disk medium stores data in accordance with addresses. Into the command queue, commands are enqueued in order. The controller regroups a plurality of groups grouped correspondingly to the addresses in the disk medium in response to a command enqueued into the command queue or a command dequeued from the command queue, and performs a process for the command queue based on the regrouped plurality of groups.
    Type: Application
    Filed: September 5, 2017
    Publication date: September 27, 2018
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kenshu NAKASHIMA, Seiji Toda, Michihiko Umeda, Yasuyuki Nagashima
  • Publication number: 20180073591
    Abstract: The present invention is a liquid-tight the vibration-damping device (10). In this vibration-damping device (10), a limiting passage (24) includes a main body passage (25) disposed inside a partition member (16), a first communication section (26) configured to communicate the main body passage (25) and a first liquid chamber (14), and a second communication section (27) configured to communicate the main body passage (25) with a second liquid chamber (12). At least one of the first communication section (26) and the second communication section (27) includes openings (31).
    Type: Application
    Filed: January 25, 2016
    Publication date: March 15, 2018
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masakazu NAGASAWA, Akira UEKI, Yasuyuki NAGASHIMA
  • Patent number: 9772002
    Abstract: A vibration isolator (10) is a liquid-enclosed vibration isolator and includes: a tubular first mounting member (11) connected to one of a vibration generator and a vibration absorber, and a second mounting member (12) connected to the other; an elastic body (13) elastically connecting the mounting members; and a partition member (16) partitioning a liquid chamber (19) in the first mounting member (11) within which a liquid (L) is enclosed into a primary liquid chamber (14) that uses the elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (15), wherein the partition member (16) is formed with a restriction passage (24) communicating the primary and secondary liquid chambers (14, 15) with each other, and a porous body (28) having numerous pores (31), which are disposed in parallel so as to communicate a side of the primary liquid chamber (14) and a side of the secondary liquid chamber (15) with each other, is arranged in the restriction passage (24).
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: September 26, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Akira Ueki, Masakazu Nagasawa, Shuhei Ono, Yasuyuki Nagashima
  • Patent number: 9726251
    Abstract: A vibration isolator includes first and second mounting members; an elastic body connecting the mounting members; a partition member partitioning a liquid chamber in the first mounting member into a primary liquid chamber using the elastic body as a part of a wall surface thereof and a secondary liquid chamber; and a movable member housed in a housing chamber provided within the partition member, the movable member being deformable or displaceable in an axial direction of the first mounting member. The partition member includes communicating holes that extend from a portion of the partition member which is exposed to the primary liquid chamber or the secondary liquid chamber toward an inside of the partition member and are opened toward the movable member. The partition member is equipped with partition plate parts dividing the housing chamber from the primary liquid chamber and dividing the housing chamber from the secondary liquid chamber.
    Type: Grant
    Filed: August 12, 2015
    Date of Patent: August 8, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Masakazu Nagasawa, Akira Ueki, Shuhei Ono, Yasuyuki Nagashima
  • Patent number: 9719576
    Abstract: A vibration isolator includes a partition member (15) that partitions a liquid chamber (16) in a first mounting member (11) into a primary liquid chamber (16a) using an elastic body (13) as a part of a wall surface thereof and a secondary liquid chamber (16b), and a movable member (23) housed in a housing chamber (20) provided within the partition member (15), the movable member being free to be deformed or displaced in an axial direction of the first mounting member (11). The partition member (15) is provided with a plurality of communicating holes (22) that extend from a portion of the partition member (15) which is exposed to the primary or secondary liquid chamber (16a or 16b) toward the inside of the partition member and are open toward the movable member (23).
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: August 1, 2017
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Masakazu Nagasawa, Akira Ueki, Shuhei Ono, Yasuyuki Nagashima
  • Patent number: 9710197
    Abstract: According to one embodiment, A storage device includes a magnetic disk, a head, and a control unit. The magnetic disk includes a plurality of physical sectors having a first length. A logical block having a second length shorter than the first length, and a redundant area having a length of the difference between the first length and the second length are assigned for the physical sectors. The head reads the data from the physical sector of the magnetic disk. The control unit controls to change the second length of the logical block while maintaining the first length of the physical sector in response to reception of a change request for changing the second length of the logical block from a host.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: July 18, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Michihiko Umeda, Hidekazu Masuyama, Nobuhiro Sugawara, Yasuyuki Nagashima, Seiji Toda, Takato Kuji
  • Publication number: 20160299686
    Abstract: According to one embodiment, there is provided a disk device including a disk to store data and a controller to control writing data to the disk and reading data from the disk. The controller queues a command from a host device, executes a first command included in the queued command, and executes reordering processing to a plurality of commands which accesses a vicinity of a physical position of an access destination of the first command.
    Type: Application
    Filed: July 20, 2015
    Publication date: October 13, 2016
    Inventors: Yasuyuki Nagashima, Michihiko Umeda, Seiji Toda, Minoru Yamamoto
  • Publication number: 20160291879
    Abstract: According to one embodiment, A storage device includes a magnetic disk, a head, and a control unit. The magnetic disk includes a plurality of physical sectors having a first length. A logical block having a second length shorter than the first length, and a redundant area having a length of the difference between the first length and the second length are assigned for the physical sectors. The head reads the data from the physical sector of the magnetic disk. The control unit controls to change the second length of the logical block while maintaining the first length of the physical sector in response to reception of a change request for changing the second length of the logical block from a host.
    Type: Application
    Filed: September 3, 2015
    Publication date: October 6, 2016
    Inventors: Michihiko Umeda, Hidekazu Masuyama, Nobuhiro Sugawara, Yasuyuki Nagashima, Seiji Toda, Takato Kuji