ROLL, THOMAS P (Total 16 Patents Found)

The invention relates to an apparatus for energizing the multiple-turn winding (47) of an electromagnetic coupling (11) having an armature (18) and a rotor (30) separated by an air gap. According to the invention said apparatus is characterized by: first means (101, 107, 108) for initially energizing said winding (47) ...
An apparatus and method is provided for energizing a multiple-turn winding of an electromagnetic coupling having an armature and a rotor separated by an air gap; in response to the closure of the air gap, the energization of the winding is reduced so as to reduce the torque coupling between the armature and rotor. By r...