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    SHAPE RETAINING DEVICE
    32.
    发明专利
    SHAPE RETAINING DEVICE 失效

    公开(公告)号：JPH04366605A

    公开(公告)日：1992-12-18

    申请号：JP14180691

    申请日：1991-06-13

    Applicant: BRIDGESTONE CORP

    Inventor： ENDO SHIGEKI ,  IWAMI KOICHI ,  ISHINO YUICHI ,  SAITO TASUKU

    IPC: B29C33/00 ,  B29D30/08

    Abstract: PURPOSE:To hold an arbitrary shape by impression of voltage, by applying an effect of electric viscosity to the title device. CONSTITUTION:An elastic body film 10 and wall material 12 are stuck to each other and an electric viscous liquid 16 is filled into a space between the elastic body film 10 and a flat-platelike negative electrode 14. A positive electrode 20 is an electrode in a wiry shape, possesses a function deforming easily according to external force and is stuck firmly to the surface where the elastic body film 10 into which the electric viscous fluid is enclosed canes into contact with the fluid. The title device is constituted so that an insulation spacer 22 is inserted between the positive and negative electrode, operated as the spacer and sufficient quantity of electric viscous liquid 16 is ensured between the positive electrode 20 and negative electrode 16.

    ELECTROVISCOUS FLUID
    34.
    发明专利
    ELECTROVISCOUS FLUID 失效

    公开(公告)号：JPH03157498A

    公开(公告)日：1991-07-05

    申请号：JP29483889

    申请日：1989-11-15

    Applicant: BRIDGESTONE CORP

    Inventor： TANAKA MITSUYA ,  KURACHI IKUO ,  ISHINO YUICHI ,  SAITO TASUKU

    IPC: C10M129/16 ,  C10M145/34 ,  C10M145/36 ,  C10M155/02 ,  C10N40/14 ,  C10N60/06

    Abstract: PURPOSE:To obtain the subject fluid increasing electroviscous effect without increasing electric current in voltage-applying by dispersing O-containing organic or inorganic powder of low-water content and incorporating a specific amount an ether bond-containing compound thereinto. CONSTITUTION:0.01-10wt.% a compound having ether bond and preferably >=70 deg.C (especially >=100 deg.C) boiling point (e.g. an ethylene oxide-modified silicone, nonyl phenol or tetraethylene glycol) is contained in a non water-based electroviscous fluid composed of oily medium having excellent electrically insulating properties in which organic or inorganic powder containing

    ELECTRIC VISCOUS FLUID
    35.
    发明专利
    ELECTRIC VISCOUS FLUID 失效

    公开(公告)号：JPH0347896A

    公开(公告)日：1991-02-28

    申请号：JP17196989

    申请日：1989-07-05

    Applicant: BRIDGESTONE CORP

    Inventor： ISHINO YUICHI ,  OSAKI TOSHIYUKI ,  ENDO SHIGEKI ,  TOMITA SEISUKE ,  MARUYAMA TAKAYUKI ,  FUKUYAMA YOSHIKI ,  SAITO TASUKU

    IPC: C10M125/02 ,  C10M169/04 ,  C10N20/02 ,  C10N20/06 ,  C10N40/14 ,  C10N60/00

    Abstract: PURPOSE:To provide the title fluid giving high electric viscosity effect over a wide temperature range, low in electric power consumption and capable of retaining high electric viscosity effect for a long period, made up of disperse phase consisting of carbonaceous fine particles with specific size and liquid phase consisting of an electrical insinuating oil with specific viscosity. CONSTITUTION:The objective electric viscous fluid made up of (A) 1-60wt.% of disperse phase consisting of carbonaceous fine particles 0.01-100mu in average size (pref.. 80-97wt.% in carbon content, 1.2-5 in C/H ratio and coated with electrical insulating thin film) and (B) 99-40wt.% of liquid phase consisting of an electrical insulating oil 0.65-500cst in viscosity at room temperature.

    ELECTROVISCOUS LIQUID
    36.
    发明专利
    ELECTROVISCOUS LIQUID 失效

    公开(公告)号：JPH02169025A

    公开(公告)日：1990-06-29

    申请号：JP32356988

    申请日：1988-12-23

    Applicant: BRIDGESTONE CORP

    Inventor： ISHINO YUICHI ,  MARUYAMA TAKAYUKI ,  OSAKI TOSHIYUKI ,  FUKUYAMA YOSHIKI ,  SAITO TASUKU

    IPC: B01J13/00 ,  C10M125/02 ,  C10N40/14

    Abstract: PURPOSE:To obtain the subject liquid causing no change of characteristic depending on content of water and requiring little consumption of electric power by constituting the liquid of fine C particles of a specified particle size contg. a specified amt. of C coated with an electric insulative thin film as dispersed phase and an electric insulating oil having a specified viscosity as liquid phase. CONSTITUTION:The electroviscous liquid is constituted of a dispersed consisting of fine C particles covered with electric insulative thin film, wherein a C content is >=85wt.% and an average particle size is 0.01-100mu, and a liquid phase consisting of an electric insulating oil having 1-500 centistokes viscosity at room temp. Thus, an electroviscous liquid causing no change of characteristic depending on the water content, requiring little consumption of electric power, and having high electroviscous effect, is obtd.

    PRODUCTION OF POWDER FOR ELECTROVISCOUS FLUID
    38.
    发明专利
    PRODUCTION OF POWDER FOR ELECTROVISCOUS FLUID 失效

    公开(公告)号：JPH08259702A

    公开(公告)日：1996-10-08

    申请号：JP6643495

    申请日：1995-03-24

    Applicant: BRIDGESTONE CORP

    Inventor： SAKURAI MAKOTO ,  SAITO TASUKU

    IPC: C08J3/12

    Abstract: PURPOSE: To obtain a process capable of inexpensively and easily yielding a powder which gives an electroviscous fluid and is uniform in particle diameter and electrical conductivity. CONSTITUTION: A thermosetting resin such as a phenol resin is mixed with ethyl silicate. A hardener such as a toluenesulfonic acid is added to the mixture to obtain a solid resin. The resin is treated with a pulverizing classifier to obtain a powder uniform in particle diameter. The powder is carbonized in an inert gas atmosphere such as argon, for example, at 560 deg.C for 2hr to produce a powder which gives the electroviscous fluid and is uniform in particle diameter and electrical conductivity.

    LIGHT TRANSMISSION BODY
    40.
    发明专利
    LIGHT TRANSMISSION BODY 失效

    公开(公告)号：JPH07198967A

    公开(公告)日：1995-08-01

    申请号：JP34862393

    申请日：1993-12-27

    Applicant: BRIDGESTONE CORP

    Inventor： INAGAKI TOMOKO ,  NAITO TOSHIO ,  SAITO TASUKU ,  SAKURAI MAKOTO ,  ISHIHARADA MINORU

    IPC: G02B6/00 ,  C07F9/06 ,  G02B1/04 ,  G02B6/032

    Abstract: PURPOSE:To obtain excellent heat resistance, weatherability, performance stable over a long period and excellent light transmissivity in a wide wavelength range by using a liquid consisting of a specific oligomer as a core material. CONSTITUTION:This light transmission body is formed by filling a transparent liquid core material 2 having the refractive index higher than the refractive index of a transparent clad material 1 into the clad material 1. Liquid consisting of an oligomer having phosphazene skeleton is used as the core material 2. In such a case, the basic structure of the light transmission body is made into the basic structure similar to the structure of the conventional soln. type light transmission tubes. The liquid core material 2 having the refractive index higher than the refractive index of the cylindrical clad material 1 is filled into the clad material 1 and window materials 3 are fitted into apertures at both ends of the clad material 1. In addition, the terminals of the window materials 3 may be fastened by terminal fasteners 4. Transparent materials, such as plastic elastomers, which have flexibility, are formable to a tubular form and have the low refractive index are preferably used as the material to form the clad material 1.

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