Patents by Inventor Hiroshi Isobe

Hiroshi Isobe 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: 10391641
    Abstract: A combination link actuation device has two link actuation devices combined with each other. Each link actuation device is provided so as to connect a distal end side link hub to a proximal end side link hub such that an orientation of the distal end side link hub is changed relative to the proximal end side link hub through three link mechanisms aligned in a circumferential direction. An orientation controlling actuator is provided in two or more link mechanisms among the three link mechanisms to optionally change an orientation of the distal end side link hub relative to the proximal end side link hub. At least one circumferential separation angle among separation angles of the three link mechanisms is greater than 120°. The two link actuation devices are disposed such that portions, of the link mechanisms, where the separation angle is greater than 120° oppose each other.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: August 27, 2019
    Assignee: NTN CORPORATION
    Inventors: Naoya Konagai, Hiroshi Isobe, Seigo Sakata, Naoki Marui, Kenzou Nose
  • Publication number: 20190255699
    Abstract: A working device includes: a linear motion unit having three degrees of freedom and obtained by combining three linear motion actuators; and a rotary unit having three degrees of freedom and obtained by combining a plurality of rotating mechanisms each having one or more rotational degrees of freedom. The linear motion unit is mounted on a mount such that a base portion of the linear motion unit is fixed to the mount. A base portion of the rotary unit is fixedly mounted on an output portion of the linear motion unit. End effectors are mounted on both the output portion of the linear motion unit and an output portion of the rotary unit.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Applicant: NTN CORPORATION
    Inventors: Hiroshi ISOBE, Kenzou NOSE, Naoki MARUI, Hiroyuki YAMADA
  • Publication number: 20190255700
    Abstract: A working device has a configuration with seven degrees of freedom, and is configured to perform work using an end effector. The working device includes: a linear motion unit having three degrees of freedom; a rotary unit having three degrees of freedom; and a rotary drive mechanism having one degree of freedom. The rotary drive mechanism is configured to rotate the rotary unit relative to the linear motion unit. The linear motion unit is mounted on a mount such that a base portion thereof is fixed to the mount. The rotary drive mechanism is mounted on an output portion of the linear motion unit. The rotary unit is mounted on an output portion of the rotary drive mechanism. The end effector is mounted on an output portion of the rotary unit.
    Type: Application
    Filed: May 3, 2019
    Publication date: August 22, 2019
    Applicant: NTN CORPORATION
    Inventors: Kenzou NOSE, Hiroshi ISOBE, Naoki MARUI
  • Publication number: 20190240903
    Abstract: A three-dimensional shaping device includes: a discharge head for discharging fluidic raw material through a nozzle; a shaping table on which a shaped product is to be molded; a linear motion mechanism; and a rotation unit. The linear motion mechanism moves the shaping table relative to the discharge head in three mutually orthogonal axial directions. The rotation unit tilts the shaping table relative to the discharge head. An operation of curing, on the shaping table, the raw material discharged through the nozzle is repeated while the relative position between the discharge head and the shaping table is being changed by the linear motion mechanism and the rotation unit, thereby molding a shaped product in which the cured raw material is stacked in layers.
    Type: Application
    Filed: April 18, 2019
    Publication date: August 8, 2019
    Applicant: NTN CORPORATION
    Inventors: Hiroshi ISOBE, Katsunori Sone
  • Patent number: 10338388
    Abstract: There is provided an image display device that comprises an image forming unit and a light guide unit. The light guide unit includes a light guide plate configured to guide light of an image formed in the image forming unit, and a support member. The light guide plate is supported by one or more buffer members at, at least, a plurality of portions of the support member.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: July 2, 2019
    Assignee: Sony Corporation
    Inventors: Takaaki Hirano, Hiroshi Isobe, Koji Fukumoto
  • Publication number: 20190152046
    Abstract: A working device (1) using a parallel link mechanism includes: a parallel link mechanism (10) by which end effectors (4, 5) are supported so as to be changeable in posture; and posture-controlling actuators (11) which actuate the parallel link mechanism (10). In the parallel link mechanism (10), a distal-end-side link hub (13) is connected to a proximal-end-side link hub (12) via three or more link mechanisms (14) so as to be changeable in posture of the distal-end-side link hub (13) relative to the proximal-end-side link hub (12). The end effectors (4, 5) are mounted to the distal-end-side link hub (12), and includes one main end effector (4) which performs a main work on a workpiece (3) and one or multiple sub end effectors (5) which perform an auxiliary work on the workpiece (3).
    Type: Application
    Filed: November 29, 2018
    Publication date: May 23, 2019
    Applicant: NTN CORPORATION
    Inventors: Naoya KONAGAI, Hiroshi ISOBE
  • Publication number: 20190111561
    Abstract: A work device includes a work device body and a contact preventer. The work device body includes a linear motion unit having three degrees of freedom and a rotary unit having three degrees of freedom. An end effector is mounted on an output portion of the rotary unit. The contact preventer separates a working region in which the work device body is installed, from a non-working region outside the working region. The contact preventer includes: an entry allowing portion allowing an object to enter the working region therethrough; and an entry allowing portion entry detection sensor configured to detect entry of an object into the working region through the entry allowing portions.
    Type: Application
    Filed: December 12, 2018
    Publication date: April 18, 2019
    Applicant: NTN CORPORATION
    Inventors: Hiroshi ISOBE, Seigo Sakata, Yuuki Shimura
  • Publication number: 20190105769
    Abstract: In the link operating device, a distal-end-side link hub is connected to a proximal-end-side link hub so as to be changeable in position relative thereto via at least three link mechanisms. Each link mechanism includes a proximal-side end link member, a distal-side end link member, and a center link member. Position-controlling actuators and speed reduction mechanisms are provided to two or more of the link mechanisms. The proximal-side end link member includes a bent portion and a pair of rotational connection bodies disposed at one end of the bent portion. The speed reduction mechanism is disposed between the pair of rotational connection bodies, and includes an output shaft fixed to one of the rotational connection bodies, and an input shaft rotatably supported by the other one of the rotational connection bodies.
    Type: Application
    Filed: December 5, 2018
    Publication date: April 11, 2019
    Applicant: NTN CORPORATION
    Inventors: Kenzou Nose, Hiroshi Isobe, Seigo Sakata
  • Publication number: 20190099878
    Abstract: In a link actuation device, a distal end side link hub is coupled to a proximal end side link hub via three or more link mechanisms such that a posture of the distal end side link hub can be changed relative to the proximal end side link hub, and a posture of the distal end side link hub relative to the proximal end side link hub is arbitrarily changed by actuators provided to two or more link mechanisms. The manipulating device includes a posture acquirer for acquiring a distal end posture represented by a bending angle and a turning angle, from a coordinate position at which a distal end side spherical link center is projected onto a two-dimensional rectangular coordinate system that has an origin located on an extension of an axis of the proximal end side link hub and is orthogonal to the extension of the axis.
    Type: Application
    Filed: December 3, 2018
    Publication date: April 4, 2019
    Applicant: NTN CORPORATION
    Inventors: Naoki MARUI, Hiroshi ISOBE, Seigo SAKATA
  • Publication number: 20190047159
    Abstract: A work device is configured to perform a work with use of an end effector and have six degrees of freedom. The work device including: a linear motion unit obtained by combining three linear motion actuators, to have three degrees of freedom; and a rotation unit obtained by combining a plurality of rotation mechanisms each having one or more degrees of rotational freedom, to have three degrees of freedom. A base portion of the linear motion unit is fixed to a mount. A base portion of the rotation unit is fixed to an output portion of the linear motion unit. The end effector is mounted to an output portion of the rotation unit.
    Type: Application
    Filed: October 18, 2018
    Publication date: February 14, 2019
    Applicant: NTN CORPORATION
    Inventors: Hiroshi Isobe, Kenzou Nose, Naoki Marui, Hiroyuki Yamada
  • Patent number: 10151367
    Abstract: A friction material includes a fiber base material, a friction modifier and a binder. The friction modifier includes two or more kinds of titanate compounds. The two or more kinds of titanate compounds have a median diameter (D50) of 20 ?m or more. At least one of the two or more kinds of titanate compounds is a porous titanate compounds. The friction material includes no copper component.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 11, 2018
    Assignee: AKEBONO BRAKE INDUSTRY CO., LTD.
    Inventors: Yu Iwai, Saki Maruta, Yoichi Kawashima, Hiroshi Isobe
  • Patent number: 10065310
    Abstract: In this link actuation device, arms of a plurality of link mechanisms are driven to be rotated by actuators, whereby the posture of a distal end side link hub is changed. A divided section setter divides a trajectory on a work surface on which an end effector works, into a plurality of sections at pass points and sets the sections. An arm rotation speed calculator calculates a rotation speed at which each arm performs constant speed rotation in each section on the basis of: a time period of movement in the section which is determined from a target moving speed and the distance of the section; and a rotation-angular movement amount of the arm in the section. A posture change controller performs positioning control on each actuator so as to cause its corresponding arm to continuously rotate at the corresponding rotation speed without acceleration/deceleration.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: September 4, 2018
    Assignee: NTN CORPORATION
    Inventors: Seigo Sakata, Yukihiro Nishio, Hiroshi Isobe, Hiroyuki Yamada
  • Publication number: 20180236619
    Abstract: A work apparatus includes a parallel link mechanism, a position control actuator, a linear motion mechanism, and a rotating mechanism. The parallel link mechanism includes three or more link mechanisms that couple a distal end side link hub to a proximal end side link hub such that a position of the distal end side link hub can be changed relative to the proximal end side link hub. The position control actuator operates the parallel link mechanism. The linear motion mechanism moves a working body in an axial direction orthogonal to a central axis of the proximal end side link hub. The rotating mechanism is mounted on the distal end side link hub and rotates a work object about a rotation center axis parallel to a movement direction of the linear motion mechanism when the central axis and a central axis are on the same line.
    Type: Application
    Filed: August 9, 2016
    Publication date: August 23, 2018
    Applicant: NTN CORPORATION
    Inventors: Kenzou NOSE, Hiroshi ISOBE, Seigo SAKATA, Hiroyuki YAMADA
  • Publication number: 20180207800
    Abstract: A diagnostic device may be used for a link actuation device. A distal end side link hub may be coupled to a proximal end side link hub via three or more link mechanisms such that posture of the distal end side link hub can be changed. Each of the three or more link mechanisms may be associated with a respective one of actuators. A predetermined action may be carried out under a predetermined condition by driving each of the actuators. A preload applicator may cause a preload to be applied to the link actuation device. A torque detector may detect a drive torque of each of the actuators while a preload is being applied. A determiner may determine whether or not the torque that is detected by the torque detector lies within a predetermined range. A notifier may notify the determination result.
    Type: Application
    Filed: March 23, 2018
    Publication date: July 26, 2018
    Applicant: NTN CORPORATION
    Inventors: Naoki Marui, Hiroshi Isobe, Yukihiro Nishio, Seigo Sakata
  • Publication number: 20180207810
    Abstract: A combination link actuation device has two link actuation devices combined with each other. Each link actuation device is provided so as to connect a distal end side link hub to a proximal end side link hub such that an orientation of the distal end side link hub is changed relative to the proximal end side link hub through three link mechanisms aligned in a circumferential direction. An orientation controlling actuator is provided in two or more link mechanisms among the three link mechanisms to optionally change an orientation of the distal end side link hub relative to the proximal end side link hub. At least one circumferential separation angle among separation angles of the three link mechanisms is greater than 120°. The two link actuation devices are disposed such that portions, of the link mechanisms, where the separation angle is greater than 120° oppose each other.
    Type: Application
    Filed: March 22, 2018
    Publication date: July 26, 2018
    Applicant: NTN CORPORATION
    Inventors: Naoya KONAGAI, Hiroshi ISOBE, Seigo SAKATA, Naoki MARUI, Kenzou NOSE
  • Publication number: 20180200826
    Abstract: An automatic welding machine includes a link actuator in which a distal end side link hub is coupled to a proximal end side link hub via three or more link mechanisms and the position of the distal end side link hub relative to the proximal end side link hub can be arbitrarily changed. The automatic welding machine is provided with one or more linear motion actuators configured to cause the proximal end side link hub of the link actuator to advance/retract relative to a mount along respective axes, and a welding torch is mounted on the distal end side link hub. The automatic welding machine further includes a movement mechanism on which peripheral devices connected to the welding torch via cables are mounted so as to be movable in one or more axial directions.
    Type: Application
    Filed: August 22, 2016
    Publication date: July 19, 2018
    Applicant: NTN CORPORATION
    Inventors: Naoya KONAGAI, Hiroshi ISOBE, Seigo SAKATA, Hiroyuki YAMADA
  • Publication number: 20180200848
    Abstract: A link actuator includes a proximal end side link hub, a distal end side link hub, and link mechanisms which connect the distal end side link hub to the proximal end side link hub. Each of the link mechanisms includes a proximal side end link member, a distal side end link member, and an intermediate link member. Each of the proximal end side link hub and the distal end side link hub is provided with a through-hole which allows an origin positioning shaft to be inserted therethrough. The distal end posture of the link actuator is set to a specified posture by inserting the origin positioning shaft through the through-holes. An amount of operation of actuators in a state where preload is applied to the link actuator is set as a position of an origin of the actuator.
    Type: Application
    Filed: March 16, 2018
    Publication date: July 19, 2018
    Applicant: NTN CORPORATION
    Inventors: Hiroshi ISOBE, Hiroyuki YAMADA, Keisuke SONE
  • Patent number: 10022827
    Abstract: The method for initially setting a position of an origin of an actuator includes a first step of setting a distal end posture being a posture of a distal end side link hub relative to a proximal end side link hub of a link actuator to a specified posture; a second step of applying a preload, which is a force that causes the distal end posture to be changed, to the link actuator having the distal end posture being the specified posture; and a third step of storing an amount of operation of each actuator in a state where the preload is applied to the link actuator, wherein the stored amount of operation is set as the position of the origin of the actuator.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: July 17, 2018
    Assignee: NTN CORPORATION
    Inventors: Hiroshi Isobe, Hiroyuki Yamada, Keisuke Sone
  • Publication number: 20180194002
    Abstract: The composite work apparatus includes: two link actuation devices that support two working bodies such that postures of the working bodies can be individually changed; and three or more linear motion actuators that move the two link actuation devices and two or more work objects relative to each other. In each link actuation device, a distal end side link hub is connected to a proximal end side link hub via three or more link mechanisms such that a posture of the distal end side link hub can be changed relative to the proximal end side link hub, and a posture control actuator that arbitrarily changes the posture of the distal end side link hub relative to the proximal end side link hub is provided to each of two or more link mechanisms of the three or more link mechanisms.
    Type: Application
    Filed: March 7, 2018
    Publication date: July 12, 2018
    Applicant: NTN CORPORATION
    Inventors: Hiroshi Isobe, Seigo Sakata, Naoki Marui, Kenzou Nose
  • Patent number: 9999903
    Abstract: There is disclosed a method for forming a CNT film. In the method, the CNT film is formed by applying a dispersion liquid including CNT and a silica colloid onto a base material and drying the dispersion liquid.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: June 19, 2018
    Assignee: Fuji Chemical CO., LTD.
    Inventors: Takafumi Matsuda, Motoo Sunaga, Hiroshi Isobe, Katsumi Kaneko