ROTATIONAL ELECTROMAGNETIC COUPLING DEVICE

摘要

A rotational coupling device for use as a clutch and/or brake is provided having improved magnetic efficiency and structural integrity. A field shell (30) and a rotor (28) of the device each define radially spaced, axially extending inner and outer poles. The inner pole (54) of the rotor is disposed radially outwardly of the inner pole of the field shell (68) resulting in improved magnetic efficiency.