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公开(公告)号：US11925590B2
公开(公告)日：2024-03-12
申请号：US17331695
申请日：2021-05-27
Inventor： Takayuki Nagata , Motoki Hirose , Takeshi Ishikawa
Abstract: An electric wheelchair includes a main frame; a drivable wheel supported by the main frame; an electric motor disposed on the main frame and configured to drive the drivable wheel; a clutch configured to switch a power transmission path from the electric motor to the drivable wheel between an engagement state and a disengagement state; and a clutch operation handle configured to be moved in a predetermined range in an up-down direction. The clutch operation handle is configured to operate the clutch so as to be in: (i) one of the engagement state or the disengagement state when the clutch operation handle is stopped at a lowest position of the predetermined range; and (ii) the other of the engagement state or the disengagement state when the clutch operation handle is stopped at a highest position of the predetermined range.
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公开(公告)号：US10814497B2
公开(公告)日：2020-10-27
申请号：US16038208
申请日：2018-07-18
Inventor： Takayuki Nagata , Yasunao Okazaki , Katsuhiko Asai , Kazuo Inoue
Abstract: A robot hand apparatus includes a holder having a bendable sucking surface that sucks an object; a magnetic elastic body arranged at the holder and formed of an elastic material containing magnetic particles; and a magnetic-field generator that is arranged at the holder and applies a magnetic field to the magnetic elastic body to change a coefficient of elasticity of the magnetic elastic body. When the magnetic-field generator applies a magnetic field to the magnetic elastic body, a flexible portion and a hardened portion having a bigger coefficient of elasticity than that of the flexible portion are formed in the magnetic elastic body. When the holder holds the object, in a state in which the sucking surface is bent at a position corresponding to the flexible portion, a region of the sucking surface between the position and a distal end of the holder sucks the object.
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3.发明授权公开(公告)号：US10561565B2
公开(公告)日：2020-02-18
申请号：US14988871
申请日：2016-01-06
Inventor： Stephen William John , Katsuhiko Asai , Takayuki Nagata , Masaki Yamamoto
IPC: A61H3/00 , A61H1/02 , A61B5/04 , A61B5/11 , A41D1/00 , A61F2/50 , A41D13/00 , A61B5/0488 , A61B5/00
Abstract: An assist garment worn on a part of a human body includes a plurality of garment-fitting actuators that are placed linearly along at least one end portion of a garment body and driven to extend and contract, a plurality of assisting actuators that are placed linearly on the garment body to cross the fitting actuators and driven to extend and contract, and a controller that individually controls the drive of the assisting actuators and the drive of the fitting actuators.
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4.发明授权公开(公告)号：US10350128B2
公开(公告)日：2019-07-16
申请号：US15012578
申请日：2016-02-01
Inventor： Takayuki Nagata , Stephen William John , Katsuhiko Asai
Abstract: An assist wear item is worn on a portion of a living body and has an inner surface brought into contact with the portion. The assist wear item includes assisting actuators, contact sensors, and a controller. Each assisting actuator is driven to expand and contract. The assisting actuators are linearly arranged along an expansion/contraction direction of a muscle at the portion. Each contact sensor detects a contact with an outer surface of the assist wear item. If the controller receives a detection result indicating a first contact from a first contact sensor among the contact sensors and receives a detection result indicating a second contact from a second contact sensor within a first time period after reception of the detection result indicating the first contact, the controller increases or decreases a driving power of expansion/contraction driving of an assisting actuator corresponding to the second contact sensor.
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公开(公告)号：US10946534B2
公开(公告)日：2021-03-16
申请号：US16039289
申请日：2018-07-18
Inventor： Takayuki Nagata , Yasunao Okazaki , Katsuhiko Asai , Kazuo Inoue
Abstract: A robot hand apparatus includes a first holder having a first sucking surface that is bendable at any position and configured to suck an object using negative pressure; a second holder arranged to oppose the first sucking surface of the first holder; and a driving mechanism configured to change a distance between the first holder and the second holder to sandwich the object between the first holder and the second holder.
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Patent Agency Ranking
公开(公告)号：US09771956B2
公开(公告)日：2017-09-26
申请号：US15244066
申请日：2016-08-23
Inventor： Katsuhiko Asai , Takayuki Nagata , Kazuo Inoue
IPC: F15B15/10
CPC classification number: F15B15/103
Abstract: An actuator converts the pressure of a fluid into a change in the length of the actuator and is formed such that an elastic tube is spirally wound. The tube is wound around the axis of the actuator. One or more grooves are spirally formed on the outer surface of the tube along the axial center of the tube. When the fluid contained in the inside of the tube is pressurized, a torsional force is applied to the tube along the spirals of the one or more grooves and causes the actuator to contract in the axial direction. Even when an external force acts in a direction in which the actuator is bent, the volume of the inside of the tube is not substantially varied. Accordingly, the actuator can be allowed to freely move in a bending direction.
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7.发明授权公开(公告)号：US11445769B2
公开(公告)日：2022-09-20
申请号：US16728354
申请日：2019-12-27
Inventor： Stephen William John , Katsuhiko Asai , Takayuki Nagata , Masaki Yamamoto
Abstract: An assist garment is configured to be worn on a part of a human body and includes a plurality of garment-fitting actuators placed linearly along at least one end portion of a garment body and configured to be driven to extend and contract, a plurality of assisting actuators placed linearly on the garment body to cross the plurality of garment-fitting actuators and configured to be driven to extend and contract, and a controller configured to individually control driving of the plurality of assisting actuators and driving of the plurality of garment-fitting actuators.
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公开(公告)号：US11364633B2
公开(公告)日：2022-06-21
申请号：US16800601
申请日：2020-02-25
Inventor： Jie Lin , Teruto Hirota , Takayuki Nagata
Abstract: A cleaning robot includes an arm including a distal end portion to which a brush is attached, the arm extending in a first direction parallel to a horizontal direction, a driver connected to the arm, the driver including a first mechanism that moves the arm in the first direction, a second mechanism that moves the arm in a second direction parallel to a vertical direction perpendicular to the first direction, and a third mechanism that moves the arm in a third direction perpendicular to both the first direction and second direction, a controller configured to switch the orientation of the distal end portion between an orientation for cleaning a first target face of the object and an orientation for cleaning a second target face of the object, the first target face facing the first direction, the second target face facing the second direction.
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公开(公告)号：USD866889S1
公开(公告)日：2019-11-12
申请号：US29645727
申请日：2018-04-27
Designer： Jie Lin , Teruto Hirota , Tatsuhiro Kishi , Takayuki Nagata , Pinchu Yang , Yuki Takaoka
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公开(公告)号：US11439286B2
公开(公告)日：2022-09-13
申请号：US16671772
申请日：2019-11-01
Inventor： Jie Lin , Teruto Hirota , Takayuki Nagata , Yuki Takaoka , Tatsuhiro Kishi , Pinchu Yang
Abstract: A mobile robot that autonomously travels includes a body that has a front surface, a driver that is disposed in the body and that drives travelling of the body, a base that includes a spring and that is connected to the body via the spring, and a distance measurer that is disposed at an upper part of the base. The base is connected to the body in such a way that the base is movable to be in a first state in which the laser range finder is located inside the body and a second state in which the laser range finder is located outside the body. The spring generates a force that pushes the base from a front surface of the body to an outside of the body.
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