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公开(公告)号：US20230318490A1
公开(公告)日：2023-10-05
申请号：US18009092
申请日：2021-05-18
Applicant: STRAWB Inc.
Inventor： Keiji SANEYOSHI , Hikaru IZUMITANI , Makoto ITO , Kazuo OKUDA , Tomio UCHI , Yuichi IMAI
IPC: H02N1/00
CPC classification number: H02N1/006
Abstract: To provide a simply-structured multilayer electrostatic actuator that exhibits a sufficient stroke and a sufficient contraction force in a specific drive range, and rapidly hardens upon an attempt to widen the interval between electrodes beyond the drive range. A multilayer electrostatic actuator (1) is configured by a plurality of actuator parts (2a, 2b. 2c) each including: a first film (3a1, 3b1, 3c1) having a plurality of first connection regions (7a1, 7b1, 7c1) formed on one surface in a predetermined pattern; and a second film (3a2, 3b2, 3c2) connected to the first film via the first connection regions, and having a plurality of second connection regions (7a2, 7b2, 7c2) formed on a surface opposite to the first film in the identical pattern. The actuator parts are connected and layered via the second connection regions. On both the first film and the second film of one actuator part (2a, 2b. 2c), a non-connection region (15) is formed having a substantially fixed width between connection regions adjacent to each other as viewed in a layering direction (Z). The first connection regions and the second connection regions are arranged so as not to overlap each other as viewed in the layering direction. Axes of the patterns between two actuator parts (2a, 2b; 2b, 2c) connected intersect each other at a predetermined angle (θ, except θ =0°) as viewed in the layering direction. When the multilayer electrostatic actuator is pulled in the layering direction due to an external force, the non-connection region, in particular mainly the non-connection region of the second film, is bending-deformed to separate the first film and the second film, resulting in the multilayer electrostatic actuator extending in the layering direction. Further pulling makes the non-connection region tensile-deformed and hardened. When a voltage is applied, the multilayer electrostatic actuator contracts in the layering direction due to the electrostatic attractive force.
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公开(公告)号：US20220224251A1
公开(公告)日：2022-07-14
申请号：US17614695
申请日：2020-05-20
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Makoto Ito , Hikaru Izumitani
IPC: H02N1/00
Abstract: Provided is a stacked electrostatic actuator capable of maintaining insulation performance between conductor layers even when an elastic layer is deformed due to a creep phenomenon. An electrostatic actuator includes a plurality of electrode films that are stacked and bonded, wherein each of the electrode films has a five-layer structure including an elastic layer, an insulating layer, a conductor layer, an insulating layer, and an elastic layer, a Young's modulus of a material for forming the elastic layers is smaller than a Young's modulus of a material for forming the insulating layers, and a spring constant of a material for forming the elastic layers increases as the electrode films extend in a stacking direction.
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公开(公告)号：US20210353404A1
公开(公告)日：2021-11-18
申请号：US17273970
申请日：2019-09-05
Applicant: National University Corporation Okayama University , Kake Educational Institution , STRAWB Inc.
Inventor： Yasuhiro FUJII , Susumu Ozawa , Tatsuyuki NAKATANI , Yuichi IMAI
IPC: A61F2/06 , C23C16/26 , C23C16/04 , C23C16/503
Abstract: An artificial blood vessel 10 comprises: an artificial blood vessel body 12; and a carbon material film 11 that covers the inner wall of the artificial blood vessel body 12. The inner wall which is covered by the carbon material film 11 is configured so that the water vapor adsorption isotherm shows desorption hysteresis.
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公开(公告)号：US20220368248A1
公开(公告)日：2022-11-17
申请号：US17619328
申请日：2020-06-17
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Kazuo Okuda
Abstract: The present invention is directed to providing an electrostatic actuator that can generate a large electrostatic force even if composed of a ribbon-shaped electrode film.
In an electrostatic actuator 10, 20 including a ribbon-shaped first electrode film 11 and a ribbon-shaped second electrode film 12, a plurality of first electrodes 1 formed of the first electrode film 11 and a plurality of second electrodes 2 formed of the second electrode film 12 are folded and laminated between one end 13 and the other end 14 of the electrostatic actuator 10, 20, and the plurality of first electrodes 1 include a pair of end electrodes 1a that are adjacent to each other in a direction in which the first electrode film 11 extends in a ribbon shape and are respectively positioned at the one end 13 and the other end 14 when laminated and at least one intermediate electrode 1b that is positioned between the end electrodes 1a when laminated.-
公开(公告)号：US10931208B2
公开(公告)日：2021-02-23
申请号：US15573994
申请日：2016-07-06
Applicant: STRAWB INC.
Inventor： Keiji Saneyoshi , Masatoshi Nakata
Abstract: There are provided a plurality of first electrode plates in each of which an adhesive is applied on one surface in a first pattern, and a plurality of second electrode plates in each of which the adhesive is applied on one surface in a second pattern which is different from the first pattern, in which the plurality of first electrode plates and the plurality of second electrode plates are alternately stacked without causing the surfaces on which the adhesive is applied to face each other.
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Patent Agency Ranking
公开(公告)号：US12206341B2
公开(公告)日：2025-01-21
申请号：US18009092
申请日：2021-05-18
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Hikaru Izumitani , Makoto Ito , Kazuo Okuda , Tomio Uchi , Yuichi Imai
IPC: H02N1/00
Abstract: To provide a simply-structured multilayer electrostatic actuator that exhibits a sufficient stroke and a sufficient contraction force in a specific drive range, and rapidly hardens upon an attempt to widen the interval between electrodes beyond the drive range. A multilayer electrostatic actuator (1) is configured by a plurality of actuator parts (2a, 2b, 2c) each including: a first film (3a1, 3b1, 3c1) having a plurality of first connection regions (7a1, 7b1, 7c1) formed on one surface in a predetermined pattern; and a second film (3a2, 3b2, 3c2) connected to the first film via the first connection regions, and having a plurality of second connection regions (7a2, 7b2, 7c2) formed on a surface opposite to the first film in the identical pattern. The actuator parts are connected and layered via the second connection regions. On both the first film and the second film of one actuator part (2a, 2b, 2c), a non-connection region (15) is formed having a substantially fixed width between connection regions adjacent to each other as viewed in a layering direction (Z). The first connection regions and the second connection regions are arranged so as not to overlap each other as viewed in the layering direction. Axes of the patterns between two actuator parts (2a, 2b; 2b, 2c) connected intersect each other at a predetermined angle (θ, except θ=0°) as viewed in the layering direction. When the multilayer electrostatic actuator is pulled in the layering direction due to an external force, the non-connection region, in particular mainly the non-connection region of the second film, is bending-deformed to separate the first film and the second film, resulting in the multilayer electrostatic actuator extending in the layering direction. Further pulling makes the non-connection region tensile-deformed and hardened. When a voltage is applied, the multilayer electrostatic actuator contracts in the layering direction due to the electrostatic attractive force.
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公开(公告)号：US11848625B2
公开(公告)日：2023-12-19
申请号：US17619328
申请日：2020-06-17
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Kazuo Okuda
Abstract: The present invention is directed to providing an electrostatic actuator that can generate a large electrostatic force even if composed of a ribbon-shaped electrode film.
In an electrostatic actuator 10, 20 including a ribbon-shaped first electrode film 11 and a ribbon-shaped second electrode film 12, a plurality of first electrodes 1 formed of the first electrode film 11 and a plurality of second electrodes 2 formed of the second electrode film 12 are folded and laminated between one end 13 and the other end 14 of the electrostatic actuator 10, 20, and the plurality of first electrodes 1 include a pair of end electrodes 1a that are adjacent to each other in a direction in which the first electrode film 11 extends in a ribbon shape and are respectively positioned at the one end 13 and the other end 14 when laminated and at least one intermediate electrode 1b that is positioned between the end electrodes 1a when laminated.-
公开(公告)号：US20200002809A1
公开(公告)日：2020-01-02
申请号：US16491684
申请日：2018-03-06
Applicant: STRAWB Inc. , Kake Educational Institution , National University Corporation Okayama University
Inventor： Yuichi IMAI , Tatsuyuki NAKATANI , Susumu OZAWA , Yasuhiro FUJII , Haruhito UCHIDA
Abstract: A film formation method is provided with a step for disposing a non-electroconductive long thin tube 102 in a chamber 101 in which the internal pressure thereof is adjustable, generating a plasma inside the long thin tube 102 in a state in which a starting material gas including a hydrocarbon is supplied, and forming a diamond-like carbon film on an inner wall surface of the long thin tube 102. The long thin tube 102 is disposed in the chamber 101 in a state in which a discharge electrode 125 is disposed in one end part of the long thin tube 102 and the other end part is open. An alternating-current bias is intermittently applied between the discharge electrode 125 and a counter electrode 126 provided so as to be separated from the long thin tube 102.
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公开(公告)号：US11750115B2
公开(公告)日：2023-09-05
申请号：US17614671
申请日：2020-05-20
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Makoto Ito , Hikaru Izumitani
CPC classification number: H02N1/004 , B81B3/0021 , B81B2203/04
Abstract: A stacked electrostatic actuator exhibits a sufficient contraction force even when pulled by a large external force and the contraction rate thereof does not decrease even under a light load. A stacked electrostatic actuator includes a plurality of electrode films each including a three-layer structure including a first insulating layer, a conductor layer, and a second insulating layer.
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公开(公告)号：US20220224252A1
公开(公告)日：2022-07-14
申请号：US17614671
申请日：2020-05-20
Applicant: STRAWB Inc.
Inventor： Keiji Saneyoshi , Makoto Ito , Hikaru Izumitani
Abstract: A stacked electrostatic actuator exhibits a sufficient contraction force even when pulled by a large external force and the contraction rate thereof does not decrease even under a light load. A stacked electrostatic actuator includes a plurality of electrode films each including a three-layer structure including a first insulating layer, a conductor layer, and a second insulating layer.
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