Patents by Inventor Mikio WAKI

Mikio WAKI 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).

  • Publication number: 20210143756
    Abstract: A dielectric elastomer transducer includes a dielectric elastomer function element having a dielectric elastomer layer and a pair of electrode layers between which the dielectric elastomer function element is interposed, and further includes a supporting body that supports the dielectric elastomer function element. Each of the electrode layers has one or more application regions. The dielectric elastomer function element has one or more function portions on which the application regions of the electrode layers are overlapped. The function portion is spaced away from the supporting body. With such a configuration, it is possible to avoid damaging the electrode layer and acquire a sufficient amount of expansion.
    Type: Application
    Filed: June 11, 2018
    Publication date: May 13, 2021
    Applicant: AISIN AW CO., LTD
    Inventors: Seiki CHIBA, Mikio WAKI
  • Publication number: 20210058013
    Abstract: A method is provided for manufacturing a dielectric elastomer transducer including a dielectric elastomer layer and electrode layers sandwiching the elastomer layer. The elastomer layer when stretched exhibits a stress-strain curve having: a low strain and high elasticity region; a low elasticity region; and a high strain region. The method includes: a pre-stretching process to reduce hysteresis in elastic behavior of the elastomer layer by stretching the elastomer layer one or more times under a load as heavy as a first load before the electrodes are provided, each stretching causing the elastomer layer to undergo a tension falling in the low elasticity region; and a dielectric elastomer layer fixing process including applying a second load smaller than the first load to the elastomer layer so as to fix the elastomer layer to a support member under a second tension smaller than the first tension.
    Type: Application
    Filed: January 11, 2019
    Publication date: February 25, 2021
    Applicants: ZEON CORPORATION
    Inventors: Seiki CHIBA, Mikio WAKI, Masakatsu HOTTA, Kazuhiro OISHI
  • Publication number: 20210022510
    Abstract: A dielectric elastomer driving sensor system includes: a dielectric elastomer transducer portion including a dielectric elastomer layer and a pair of electrode layers that sandwich the dielectric elastomer layer, where the pair of electrode layers include a driving region and a sensor region that are partitioned from each other; a power supply unit that applies a voltage to the driving region; a detection unit that detects a change in capacitance in the sensor region; and a control unit that controls the power supply unit and the detection unit. With this configuration, both the driving function and the sensor function can be performed.
    Type: Application
    Filed: November 26, 2018
    Publication date: January 28, 2021
    Applicants: ZEON CORPORATION
    Inventors: Seiki CHIBA, Mikio WAKI, Hironobu KONDO, Masahiro ISHIKAWA, Keiji OSUGI
  • Publication number: 20200252010
    Abstract: Provided are: a power generator including a dielectric elastomer element with an elastomer layer and electrodes sandwiching the layer; an intermediate power storage including a specific number of capacitors to receive output power from the power generator; a storage unit to receive output power from the intermediate power storage; and a controller for setting control by switching a mode between an input mode and an output mode. In the input mode, some number of the capacitors of the intermediate power storage are connected to the power generator such that a series number is an input series number of less than or equal to the specific number. In the output mode, some number of the capacitors are connected to the storage unit such that the series number is an output series number which is smaller than the input series number.
    Type: Application
    Filed: February 23, 2018
    Publication date: August 6, 2020
    Applicants: ZEON CORPORATION
    Inventors: Seiki CHIBA, Mikio WAKI, Mitsuaki ITO, Makoto SAWADA
  • Publication number: 20200011649
    Abstract: A dielectric elastomer sensor system A1 is provided with an oscillation circuit 1 including a dielectric elastomer sensor element 11 having a dielectric elastomer layer 111 and a pair of electrode layers 112 sandwiching the dielectric elastomer layer 111, and with a determination circuit 2 configured to determine a change in a capacitance of the dielectric elastomer sensor element 11, based on an output signal from the oscillation circuit 1. The dielectric elastomer sensor element 11 changes in capacitance due to deformation caused by external forces of at least two mutually different directions. Such a configuration enables provision of a multifunctional dielectric elastomer sensor system and dielectric elastomer sensor element.
    Type: Application
    Filed: February 23, 2018
    Publication date: January 9, 2020
    Applicants: ZEON CORPORATION
    Inventors: Seiki CHIBA, Mikio WAKI, Mitsuaki ITO, Makoto SAWADA
  • Patent number: 10431730
    Abstract: A dielectric elastomer driving mechanism includes a driver, a follower, and a power transmitter. The driver includes a dielectric elastomer driving element made up of a dielectric elastomer layer and two electrode layers sandwiching the dielectric elastomer layer. The driver also includes a tension maintaining element maintaining, in a no-voltage state, the dielectric elastomer driving element in a state in which tension occurs, and includes an output portion capable of moving along with the expanding or contracting of the dielectric elastomer driving element. The follower includes a following element actuating in accordance with a driving force inputted. The power transmitter is connected to the output portion of the driver for transmitting a driving force of the driver to the follower.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: October 1, 2019
    Inventors: Seiki Chiba, Mikio Waki
  • Patent number: 10411617
    Abstract: A dielectric elastomer motor includes an artificial muscle and a conversion mechanism cooperating with the artificial muscle. The artificial muscle includes a dielectric elastomer film or layer having a first surface and a second surface opposite to the first surface. First and second electrodes are attached to the first surface and the second surface of the dielectric elastomer film, respectively. First and second bases are attached to the dielectric elastomer so as to be spaced apart from each other. The first base and the second base are capable of reciprocation relative to each other upon change in size of the dielectric elastomer. The conversion mechanism converts the reciprocation of the bases to pivotal or rotational movement. The dielectric elastomer receives voltage application with a predetermined timing via the first and the second electrodes.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 10, 2019
    Assignees: KUREHA ELASTOMER CO., LTD.
    Inventors: Seiki Chiba, Mikio Waki, Yoshinori Tanaka, Kuniyoshi Okamoto, Kazuya Nagase, Naoaki Tsurumi, Syo Kurita, Makoto Takasugi, Nobuhiro Miyagi
  • Publication number: 20180375445
    Abstract: A converter includes a first electrode, a second electrode, a dielectric elastomer film, and a high-dielectric-constant film. The dielectric elastomer film is disposed between the first electrode and the second electrode, and has relative dielectric constant ?1. The high-dielectric-constant film is disposed at one or both of: a location between the first electrode and the dielectric elastomer film; and a location between the second electrode and the dielectric elastomer film. The high-dielectric-constant film has relative dielectric constant ?2 that is higher than the relative dielectric constant ?1.
    Type: Application
    Filed: January 6, 2017
    Publication date: December 27, 2018
    Applicants: KCM CORPORATION, ADEKA CORPORATION
    Inventors: Noriyuki OYA, Hideyuki YOKOTA, Masatoshi HOMMA, Keiichi ODAGIRI, Hiromi TAKENOUCHI, Tomoaki SAIKI, Seiki CHIBA, Mikio WAKI
  • Publication number: 20180115260
    Abstract: A dielectric elastomer motor includes an artificial muscle and a conversion mechanism cooperating with the artificial muscle. The artificial muscle includes a dielectric elastomer film or layer having a first surface and a second surface opposite to the first surface. First and second electrodes are attached to the first surface and the second surface of the dielectric elastomer film, respectively. First and second bases are attached to the dielectric elastomer so as to be spaced apart from each other. The first base and the second base are capable of reciprocation relative to each other upon change in size of the dielectric elastomer. The conversion mechanism converts the reciprocation of the bases to pivotal or rotational movement. The dielectric elastomer receives voltage application with a predetermined timing via the first and the second electrodes.
    Type: Application
    Filed: January 13, 2017
    Publication date: April 26, 2018
    Inventors: Seiki CHIBA, Mikio WAKI, Yoshinori TANAKA, Kuniyoshi OKAMOTO, Kazuya NAGASE, Naoaki TSURUMI, Syo KURITA, Makoto TAKASUGI, Nobuhiro MIYAGI
  • Publication number: 20170155032
    Abstract: A dielectric elastomer driving mechanism includes a driver, a follower, and a power transmitter. The driver includes a dielectric elastomer driving element made up of a dielectric elastomer layer and two electrode layers sandwiching the dielectric elastomer layer. The driver also includes a tension maintaining element maintaining, in a no-voltage state, the dielectric elastomer driving element in a state in which tension occurs, and includes an output portion capable of moving along with the expanding or contracting of the dielectric elastomer driving element. The follower includes a following element actuating in accordance with a driving force inputted. The power transmitter is connected to the output portion of the driver for transmitting a driving force of the driver to the follower.
    Type: Application
    Filed: November 28, 2016
    Publication date: June 1, 2017
    Inventors: Seiki CHIBA, Mikio WAKI, Yoshinori TANAKA, Kuniyoshi OKAMOTO, Kazuya NAGASE, Naoaki TSURUMI