Magnetorheological fluids with stearate and thiophosphate...

Details Magnetorheological fluids with stearate and thiophosphate... Magnetorheological fluids with stearate and thiophosphate...

2005-04-19

2005-04-19

Koslow, C. Melissa (Department: 1755)

Compositions

Magnetic

Flaw detection or magnetic clutch

Reexamination Certificate

active

06881353

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 a liquid, magnetizable particles, a stearate and a thiophosphate.

REFERENCES:
patent: 3615565 (1971-10-01), Gerlach et al.
patent: 4199460 (1980-04-01), Sumrell et al.
patent: 5683615 (1997-11-01), Munoz
patent: 5900184 (1999-05-01), Weiss et al.
patent: 6395193 (2002-05-01), Kintz et al.
patent: 1283532 (2003-02-01), None
EPO Search Report for EP Application 04014133.5 dated Nov. 5, 2004.

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