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United States Patent 5,445,759
PowellAug. 29, 1995

Preparation of electrorheological fluids using fullerenes and other crystals having fullerene-like anisotropic electrical properties

Inventors: Powell; Bob R. (Birmingham, MI).
Assignee: General Motors Corporation (Detroit, MI).
Appl. No.: 058,815
Filed: May 10, 1993

Intl. Cl.:C10M 171/00; C10M 169/04;
U.S. Cl.:252/73.; 252/74.;
Field of Search:73;74;572

References Cited

U.S. Patent Documents
4,744,914May, 1988Filisko et al. 252/ 74
4,772,407Sept., 1988Carlson 252/ 74
5,114,477May, 1992Mort et al. 106/ 20
5,234,474Aug., 1993Whewell 44/282

Foreign Patent Documents
0361106Apr., 1990EPX
0387857Sept., 1990EPX
4-45196Feb., 1992JPX

Other References

Primary Examiner: Skane; Christine


Disclosed are electrorheological fluids having spherical, or near-spherical, fullerene-type particles and a nonconducting or dielectric fluid.

13 Claims, 2 Drawing Figures

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