Viscous clutch assembly

Details Viscous clutch assembly Viscous clutch assembly

1998-09-21

2000-03-07

Bonck, Rodney H.

192 clutches and power-stop control

Field responsive frictional media type

192 584, F16D 3500

Patent

active

060327723

ABSTRACT:
A viscous fluid clutch includes a rotor attached to an output from an engine, a stator attached to a fan assembly and a coil assembly having at least a portion attached to the stator. A first gap is defined between the rotor and the stator and a second gap is defined between the rotor and the coil assembly. The first and second gaps are filled with a magneto rheological (MR) fluid. The coil assembly creates a magnetic field in the first and second gaps to vary the viscosity of the MR fluid to produce a variable speed viscous fluid clutch. The coil assembly includes coil windings which are supplied with power through a slip ring assembly. Both the coil windings and the wiring between the slip ring assembly and the coil windings are isolated from the magneto rheological fluid.

REFERENCES:
patent: 2822070 (1958-02-01), Jaeschke
patent: 2870888 (1959-01-01), Gill
patent: 4056178 (1977-11-01), Defly
patent: 4681197 (1987-07-01), Pedu
patent: 5377798 (1995-01-01), Hudson et al.
patent: 5598908 (1997-02-01), York et al.
patent: 5667715 (1997-09-01), Foister
patent: 5848678 (1998-12-01), Johnston et al.
patent: 5896965 (1999-04-01), Gopalswamy et al.

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