Abstract: A method for producing an electromagnetic actuator which includes a pair of member which are opposite to each other on the flat faces thereof for relative movement, a plurality of grooves formed concentrically in the flat face of one of said members opposite to the other for receiving a plurality of endless coils, and a plurality of endless coils received in said plurality of grooves, and further includes a communication hole formed in one of said pair of member to make communication between said grooves and having an inlet port for resin pouring, and resin integrally poured in between said plurality of coils and said plurality of grooves and in said communication hole, wherein; (a) a method having a projection is placed on the upper portion of said coil-receiving grooves, when resin is poured form said inlet port, and (b) the projection of said mold is engaged with said plurality of coils to keep them in place.

Abstract: An electromagnetic actuator including a stator and an armature having opposed flat faces which are movable relative to each other, grooves formed in the flat face of the stator facing the flat face of the armature, with endless coils received in the grooves, and bore hole formed in the stator for fluid communication between the grooves, for allowing resin to be poured in the bore hole and thus fill the grooves with the endless coils therein.