Compositions – Magnetic – Flaw detection or magnetic clutch
Reexamination Certificate
2005-08-23
2005-08-23
Koslow, C. Melissa (Department: 1755)
Compositions
Magnetic
Flaw detection or magnetic clutch
Reexamination Certificate
active
06932917
ABSTRACT:
One embodiment of the invention includes an MR fluid of improved durability. The MR fluid is particularly useful in devices that subject the fluid to substantial centrifugal forces, such as large fan clutches. A particular embodiment includes a magnetorheological fluid including 10 to 14 wt % of a hydrocarbon-based liquid, 86 to 90 wt % of bimodal magnetizable particles, and 0.05 to 0.5 wt % fumed silica.
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Golden Mark A.
Smith Anthony L.
Snavely Keith S.
Ulicny John C.
Brooks Cary W.
General Motors Corporation
Koslow C. Melissa
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