Patent ID: 7325663
Filing Date: 2008-02-05
Classification: F16D

Abstract:
1. A magnetorheological clutch comprising: a stationary part, of a rotatable primary part with primary lamellae and a secondary part with secondary lamellae which is rotatable about a common axis and surrounds the primary part, so as to define between the primary part and the secondary part a space which contains a magnetorheological fluid and in which the primary lamellae and secondary lamellae alternate in the axial direction, and a regulatable magnetic field acting on the magnetorheological fluid, wherein a) at least one magnet coil is arranged in front of or behind the lamellae in the axial direction and loops around a first U-shaped yoke having two end faces adjacent to and parallel to the lamellae, b) at least one second yoke is provided on the side of the lamellae which faces away from the first yoke, and c) the regions of the secondary part which lie inside and outside the lamellae in the radial direction consist of a material of low magnetic permeability.