Patent ID: 6581739
Filing Date: 2003-06-24
Classification: F16D

Abstract:
A magnetic particle device comprising:a stationary housing member having a duct therethrough for receiving a rotatable shaft; said rotatable shaft having a first rotatable member mounted thereon; a second rotatable member positioned radially outwardly of said first rotatable member, said first and second rotatable members cooperating to define a gap therebetween, said gap containing a magnetically reactive medium; a source of magnetic flux; said first rotatable member and said second rotatable member including a plurality annular grooves, said grooves positioned to create a plurality of working surfaces; and wherein said magnetic flux is forced to travel a weaving path substantially between said grooves, traversing said gap substantially through said working surfaces so as to magnetize said magnetically reactive medium and transforming said medium into a torque transmitting coupling thereby permitting the transfer of torque between said first and second rotatable surfaces.