Patent ID: 6707365
Filing Date: 2004-03-16
Classification: F16D

Abstract:
An electromagnetic coupling apparatus comprising:a ring case comprising an annular groove, which has an open edge; an annular resin case having an annular groove, wherein said annular resin case is disposed in said annular groove of said ring case; a coil comprising an electrical wire, wherein said coil is covered substantially by said annular resin case; an opening formed through said ring case in a closed end surface of said ring case; a connector disposed on said closed end surface of said ring case, such that said connector covers said opening, and said connector comprising a housing and a cap, wherein said connector supports a first and a second ends of said coil and a pair of contacts, and said cap closes an end opening of said housing, and wherein said housing is formed integrally with said annular resin case; and each of a first end lead wire and a second end lead wire of an electric circuit are connected to one of said first and said second ends, respectively, via one of said pair of contacts, respectively, in said connector.