Patents by Inventor Hiromasa Takahashi

Hiromasa Takahashi 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: 11071108
    Abstract: A user equipment for communicating with a base station in a radio communication system that supports narrow band communication is disclosed including a receiver that receives, from the base station via a first frequency band, information for identifying a second frequency band. A synchronization signal and broadcast information are transmitted on the first frequency band, and the synchronization signal and the broadcast information are not transmitted on the second frequency band. The user equipment further includes a processor that identifies a center frequency of the second frequency band based on the received information.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: July 20, 2021
    Assignee: NTT DOCOMO, INC.
    Inventors: Hideaki Takahashi, Hiromasa Umeda, Kazuaki Takeda
  • Publication number: 20210086282
    Abstract: According to one embodiment, a processing system includes a processing device. The processing device performs at least a first determination of determining whether or not a detector contacts a welding object. The detector includes a plurality of detection elements arranged in a first direction. The detector transmits an ultrasonic wave toward the welding object and detects a reflected wave. The first determination is based on a detection result when the reflected wave is detected by the detector.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 25, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro SAITO, Hiromasa TAKAHASHI
  • Patent number: 10947699
    Abstract: A construction machine incorporates a hydraulic closed circuit system capable of suppressing, even where a selector valve is stuck in an open state by a failure of the selector valve or a control system therefor, unintended operation of a hydraulic actuator and continuing operation of a machine body. The construction machine includes first sensors that detect open-closed states of a plurality of switching valves, first compulsory valve closing devices that change over the plurality of switching valves to a closed position irrespective of open-close control by a machine body controller, and a valve device controller that controls, when it is detected based on the open-closed states of the plurality of selector values detected by the first sensors that one of the plurality of selector values is stuck in an open state, the first compulsory valve closing device such that other selector valve connected to one of the plurality of closed circuit pumps to which the one selector valve is connected is closed.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 16, 2021
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Teppei Saitoh, Takamasa Kai, Kenji Hiraku, Hiromasa Takahashi, Juri Shimizu
  • Patent number: 10946532
    Abstract: According to one embodiment, a gripping tool includes a gripper and a suction pad. The gripper is flexible. A granular material is provided in an interior of the gripper. The suction pad includes a pad portion and a pipe-shaped member and is surrounded with the gripper. The pad portion suctions a workpiece. The pipe-shaped member is connected to the pad portion. The suction pad is movable with respect to the gripper in a first direction. The first direction is from the pad portion toward the pipe-shaped member.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: March 16, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Emiko Ishida, Hiromasa Takahashi, Takeshi Toyoshima
  • Patent number: 10946533
    Abstract: According to one embodiment, a gripping tool includes a gripper. The gripper is flexible. A granular material is provided in an interior of the gripper. The gripping tool grips a workpiece by depressurizing the interior of the gripper in a state in which the gripper is caused to contact the workpiece. The gripper includes a first portion contacting the workpiece, and a second portion opposing the first portion. The granular material is provided in a first space between the first portion and the second portion. A hardness of at least a portion of the first portion is less than 46.9.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: March 16, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromasa Takahashi, Emiko Ishida
  • Publication number: 20210063354
    Abstract: According to one embodiment, a display control system acquires a tilt of a detector with respect to a weld portion. The detector includes a plurality of detection elements arranged along a first arrangement direction and a second arrangement direction. The first arrangement direction and the second arrangement direction cross each other. The tilt is calculated based on a detection result of a reflected wave obtained by transmitting an ultrasonic wave from the plurality of detection elements. The system displays a user interface, displays a symbol and a tolerance range in a region included in the user interface, and updates the display of the symbol in the region according to the acquiring of the tilt. The region spreads two-dimensionally. The symbol indicates the tilt. The tolerance range is of a target value of the tilt.
    Type: Application
    Filed: August 26, 2020
    Publication date: March 4, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Masahiro SAITO, Hiromasa TAKAHASHI
  • Patent number: 10926419
    Abstract: According to one embodiment, a gripping tool includes a gripper. The gripper is flexible. A granular material is provided in an interior of the gripper. The gripper is configured to grip a workpiece by being in close contact with the workpiece in a state in which an outer perimeter of the gripper is held, and by the interior of the gripper being depressurized.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: February 23, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Emiko Ishida, Noriyuki Ooba, Hiromasa Takahashi, Akira Ushijima
  • Publication number: 20210047803
    Abstract: There is provided a hydraulic drive device for a working machine with which a number of times of maintenance can be reduced. A controller (20) opens a first on-off valve (25a), closes a second on-off valve (25b), switches a first directional switching valve (30a) to a first position (A), and switches a second directional switching valve (30b) to a third position (C), thereby pressure oil from a hydraulic pump (1a) is supplied from the first on-off valve to an actuator (5a) through the first directional switching valve. When history data of the first on-off valve is determined to satisfy a prescribed condition, the controller closes the first on-off valve, opens the second on-off valve, switches the first directional switching valve to a second position (B), and switches the second directional switching valve to a fourth position (D), thereby pressure oil from the hydraulic pump is supplied from the second on-off valve to the actuator through the second directional switching valve.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 18, 2021
    Inventors: Yoshifumi TAKIMOTO, Kazuo TAKIGUCHI, Chinori IIO, Jun OKAMURA, Hiromasa TAKAHASHI
  • Patent number: 10907323
    Abstract: There is provided a hydraulic drive device for a working machine with which a number of times of maintenance can be reduced. A controller (20) opens a first on-off valve (25a), closes a second on-off valve (25b), switches a first directional switching valve (30a) to a first position (A), and switches a second directional switching valve (30b) to a third position (C), thereby pressure oil from a hydraulic pump (1a) is supplied from the first on-off valve to an actuator (5a) through the first directional switching valve. When history data of the first on-off valve is determined to satisfy a prescribed condition, the controller closes the first on-off valve, opens the second on-off valve, switches the first directional switching valve to a second position (B), and switches the second directional switching valve to a fourth position (D), thereby pressure oil from the hydraulic pump is supplied from the second on-off valve to the actuator through the second directional switching valve.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: February 2, 2021
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Yoshifumi Takimoto, Kazuo Takiguchi, Chinori Iio, Jun Okamura, Hiromasa Takahashi
  • Patent number: 10906186
    Abstract: A robot hand device according to an embodiment includes extensible arms which can be extended and shortened, a drive motor, and at least one clutch. The extensible arms support an object to be carried and are capable of being extended and shortened. The drive motor extends and shortens the extensible arms. The at least one clutch are capable of transmitting power of the motor to at least one of the extensible arms selected among the extensible arms to extend and shorten the selected at least one of the extensible arms.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: February 2, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiromasa Takahashi, Noriyuki Ooba, Akira Ushijima, Emiko Ishida
  • Patent number: 10889964
    Abstract: Provided is a work machine that can selectively establish a closed circuit connection between a single rod-type hydraulic cylinder and a plurality of bidirectional-type hydraulic pumps, the work machine being capable of enhancing responsiveness of the single rod-type hydraulic cylinder when a high-speed lever switching operation is conducted in a state in which a rod pressure of the single rod-type hydraulic cylinder is higher than a bottom pressure. When a bucket lever (70a) is operated to a side of extending the bucket cylinder in a state in which a pressure in a rod chamber (5b) of the bucket cylinder (5) is higher than a pressure in a bottom chamber (5a), a controller (50) opens a rod-side proportional valve (45) and discharges a working fluid in the rod chamber to a working fluid tank (25) such that a differential pressure between the pressure in the rod chamber and the pressure in the bottom chamber is reduced below a switching pressure (Psw) of a flushing valve (33).
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: January 12, 2021
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Juri Shimizu, Kenji Hiraku, Hiromasa Takahashi, Shohei Sugiki
  • Patent number: 10858805
    Abstract: A construction machine is provided which includes a hydraulic closed circuit in which a single rod hydraulic cylinder is driven directly by a bidirectionally tiltable variable displacement pump and can stably speed up the contraction action of the single rod hydraulic cylinder. In the case where a contraction action of a hydraulic cylinder 10 is instructed through an operation lever 30, when a differential pressure obtained by subtracting the pressure of a cap chamber 10a from the pressure of a rod chamber 10b is equal to or lower than a first threshold value a set to a level equal to or higher than a selection setting pressure of a flushing valve 14, a controller 20 closes a rod side selector valve 12b to disable rod assist action for supplying hydraulic fluid from a second hydraulic pump 8 to the rod chamber, and when the differential pressure is higher than the first threshold value, the controller 20 opens the rod side selector valve to enable the rod assist action.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: December 8, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Hiromasa Takahashi, Shohei Sugiki, Kenji Hiraku, Juri Shimizu, Teppei Saitoh
  • Patent number: 10843346
    Abstract: According to one embodiment, a gripping tool includes a gripper. The gripper is flexible. A granular material is provided in an interior of the gripper. The gripping tool grips a workpiece by depressurizing the interior of the gripper in a state in which the gripper is caused to contact the workpiece. At least a portion of the gripper includes a resin member and a fibrous member. The fibrous member is provided inside the resin member.
    Type: Grant
    Filed: March 25, 2019
    Date of Patent: November 24, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromasa Takahashi, Yoko Tokuno, Emiko Ishida
  • Publication number: 20200361097
    Abstract: According to one embodiment, a gripping tool includes a gripper. The gripper is flexible. A plurality of granular materials is provided in an interior of the gripper. The gripping tool grips a workpiece by depressurizing the interior of the gripper in a state in which the gripper is caused to contact the workpiece. A diameter of at least a portion of the granular materials is less than 1774 ?m.
    Type: Application
    Filed: August 3, 2020
    Publication date: November 19, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromasa Takahashi, Emiko Ishida
  • Patent number: 10829908
    Abstract: This construction machine includes a first hydraulic drive device that is driven by a first prime mover and a second hydraulic drive device that is driven by a second prime mover. The first hydraulic drive device has a first closed circuit that connects a first hydraulic actuator and a first closed-circuit pump and a first assist flow path that connects the first closed circuit and a first open-circuit pump and that supplies pressure oil from the first open-circuit pump to the first closed circuit. The second hydraulic drive device is provided with a second closed circuit that connects a second hydraulic actuator and a second closed-circuit pump. The present invention also includes a first emergency flow path that branches from the first assist flow path and connects to the second closed circuit and that supplies pressure oil from the first open-circuit pump to the second closed circuit.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: November 10, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Teppei Saitoh, Kenji Hiraku, Juri Shimizu, Hiromasa Takahashi
  • Patent number: 10783184
    Abstract: A computer includes a data generation unit and a storage unit which retains graph information for managing a graph configured from a plurality of vertexes and sides. The data generation unit performs acquiring a plurality of data and graph information and assuring storage regions in number equal to the number of vertexes, converting each data into an input value and setting at least one input value to a storage region corresponding to at least one vertex, executing an updating process for updating a value set to a storage region corresponding to a first vertex using the value set to the storage region corresponding to the first vertex and a value set to a storage region corresponding to a different vertex directly connected to the first vertex, and outputting a set of values set to the storage regions corresponding to the vertexes as the feature value.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: September 22, 2020
    Assignee: HITACHI, LTD.
    Inventors: Junichi Miyakoshi, Masanao Yamaoka, Hiromasa Takahashi, Shirun Ho, Kenzo Kurotsuchi, Sanato Nagata
  • Patent number: 10767674
    Abstract: A construction machine includes a bidirectionally tiltable type hydraulic pump 2, a hydraulic cylinder 1 having a cap chamber 1e and a rod chamber 1f, a first flow path 11 connecting the hydraulic pump 2 and the cap chamber 1e, a second flow path 12 connecting the hydraulic pump 2 and the rod chamber 1f, a discharge flow path 16 branched from the first flow path 11, a discharge valve 32 that is disposed in the discharge flow path 16 and controls a discharge rate of hydraulic working oil from the cap chamber 1e to the discharge flow path 16, an operation device 54 that instructs an action of the hydraulic cylinder 1, and a controller 56.
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 8, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Takamasa Kai, Hiromasa Takahashi, Teppei Saitoh, Juri Shimizu
  • Patent number: 10766150
    Abstract: According to one embodiment, a gripping tool includes a gripper. The gripper is flexible. A plurality of granular materials is provided in an interior of the gripper. The gripping tool grips a workpiece by depressurizing the interior of the gripper in a state in which the gripper is caused to contact the workpiece. A diameter of at least a portion of the granular materials is less than 1774 ?m.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: September 8, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiromasa Takahashi, Emiko Ishida
  • Patent number: 10745887
    Abstract: A work machine that can detect abnormality such as a malfunction and wear and tear of each of hydraulic pumps including control equipment with high precision and that can reduce equipment cost is provided. A controller 9 according to the present invention includes a volumetric-transfer-efficiency-calculating section 94 that calculates a volumetric transfer efficiency ?C representing a transfer efficiency of hydraulic oil between a hydraulic cylinder 11 and hydraulic pumps 21 to 23 on the basis of a target discharge flow rate calculated by a target-discharge-flow-rate-calculating section 932 and the speed of the hydraulic cylinder 11 that is detected by a speed sensor 28, and an abnormality decision section 95 that decides whether any one of the hydraulic pumps 21 to 23 is abnormal on the basis of the volumetric transfer efficiency ?C calculated by the volumetric-transfer-efficiency-calculating section 94.
    Type: Grant
    Filed: August 29, 2016
    Date of Patent: August 18, 2020
    Assignee: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Yuki Akiyama, Kenji Hiraku, Hiromasa Takahashi
  • Patent number: 10720780
    Abstract: A battery authentication system includes a battery pack, and a host device connected to the battery pack to charge the battery pack. The battery pack includes a battery, a discharge switch that turns on and off discharging of the battery, a charge switch that turns on and off charging of the battery, and a control integrated circuit (IC) that controls the battery. The control IC includes a charge/discharge control circuit that controls the discharge switch and the charge switch, and an authentication circuit that performs a process for performing an authentication with the host device. The authentication circuit is configured to perform a process associated with a first authentication. The charge/discharge control circuit is configured to control the discharge switch to be turned on when the first authentication is established. The authentication circuit is configured to perform a process associated with a second authentication.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: July 21, 2020
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Masayoshi Okawa, Hiromasa Takahashi