CA2000322A1 - Electroviscous fluid - Google Patents

Electroviscous fluid

Info

Publication number
CA2000322A1
CA2000322A1 CA 2000322 CA2000322A CA2000322A1 CA 2000322 A1 CA2000322 A1 CA 2000322A1 CA 2000322 CA2000322 CA 2000322 CA 2000322 A CA2000322 A CA 2000322A CA 2000322 A1 CA2000322 A1 CA 2000322A1
Authority
CA
Canada
Prior art keywords
electroviscous
fluid
viscosity
influence
weight
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA 2000322
Other languages
French (fr)
Other versions
CA2000322C (en
Inventor
Yuichi Ishino
Toshiyuki Osaki
Shigeki Endo
Seisuke Tomita
Takayuki Maruyama
Yoshiki Fukuyama
Tasuku Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP63323569A external-priority patent/JP2944670B2/en
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Publication of CA2000322A1 publication Critical patent/CA2000322A1/en
Application granted granted Critical
Publication of CA2000322C publication Critical patent/CA2000322C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Lubricants (AREA)

Abstract

The electroviscous fluid is a suspension composed of a finely divided dielectric solid dispersed in an electrically nonconductive oil.
The viscosity of the fluid increases swiftly and reversibly under an influence of electric field applied thereto and the fluid turns to a state of plastic or solid when the influence is sufficiently strong. The electroviscous fluid of the present invention comprises 1-60% by weight of a dispersed phase of carbonaceous particulates having average particle size of 0.01-100 micrometer, and 99-40% by weight of a continuous liquid phase of an electric insulating oil having a viscosity of 0.65-500 centistokes at room temperature. The electroviscous fluid exhibits an excellent electroviscous effect even at a high temperature with a low electric power consumption together with maintaining the improved electroviscous effect for a long period of time.
CA002000322A 1988-12-23 1989-10-06 Electroviscous fluid Expired - Fee Related CA2000322C (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP63-323,569 1988-12-23
JP63323569A JP2944670B2 (en) 1988-12-23 1988-12-23 Electrorheological liquid
JP8578389 1989-04-06
JP1-85,783 1989-04-06

Publications (2)

Publication Number Publication Date
CA2000322A1 true CA2000322A1 (en) 1990-06-23
CA2000322C CA2000322C (en) 1997-08-19

Family

ID=26426788

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002000322A Expired - Fee Related CA2000322C (en) 1988-12-23 1989-10-06 Electroviscous fluid

Country Status (2)

Country Link
AU (1) AU628863B2 (en)
CA (1) CA2000322C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2417850A (en) * 1942-04-14 1947-03-25 Willis M Winslow Method and means for translating electrical impulses into mechanical force
US3047507A (en) * 1960-04-04 1962-07-31 Wefco Inc Field responsive force transmitting compositions
JPH07103392B2 (en) * 1987-06-29 1995-11-08 旭化成工業株式会社 Electrorheological fluid

Also Published As

Publication number Publication date
CA2000322C (en) 1997-08-19
AU628863B2 (en) 1992-09-24
AU4255289A (en) 1990-06-28

Similar Documents

Publication Publication Date Title
US5087382A (en) Electroviscous fluid
US6396012B1 (en) Attitude sensing electrical switch
EP0885918A4 (en) Polypropylene film and capacitor made by using the same as the dielectric
DE69827653D1 (en) ADDITIVE MIXTURES WITH HIGH AND LOW MOLECULAR WEIGHT TO IMPROVE THE FLOWABILITY OF LUBRICATING OILS AT LOW TEMPERATURES
JPS646093A (en) Electrical viscous fluid
AU2003262276A1 (en) Electric double-layer capacitor
JPH02164438A (en) Electroviscous liquid
USD296325S (en) Electrical connector with fluid cooling capability
EP0549227B1 (en) Electroviscous fluid
EP0634473A3 (en) Electrorheological fluid composition.
MY112211A (en) High voltage capacitor and magnetron
CA2020679A1 (en) Carbonaceous powder for electrorheological fluid and a method of making the same
US5296155A (en) Stratified carrier electroviscous fluids and apparatus
CA2204273A1 (en) Vegetable seed oil insulating fluid
GB8800585D0 (en) Thermotropic polymer compositions
US5352718A (en) Electrorheological semisolid
JPH03139598A (en) Electroviscous fluid
ES8606727A1 (en) Impregnating oil for use as the dielectric medium of capacitors.
US2126363A (en) Dielectric material
ES446197A1 (en) Model railway power supply
US3289017A (en) Shear responsive liquid generator
EP0119792A3 (en) Hydrogenated polyisoprene lubricating composition
JPS56135598A (en) Lubricating oil composition for refrigerator
JPS63118397A (en) Lubricant oil
AU628863B2 (en) Electroviscous fluid

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20051006