Patent ID: 7438327

Claim:
An electrical connection for connecting a metal conduit thereto comprising: a connector body having an inlet end and an outlet end, a bore extending through said connector body from said inlet end to said outlet end to form opposed inlet and outlet openings, said bore extending through said inlet end having a first inner portion and a second outer portion, said first inner portion having a diameter less than the diameter of said second outer portion adjacent said inlet opening, said first inner portion having an internal surface sized and shaped to snugly receive an end portion of a conduit, and said second outer portion having an axial length forming an internal surface that tapers progressively uninterruptedly outwardly free of any irregularities toward said inlet opening, a unitary sealing and compression metallic ring adapted to be received onto an end portion of a conduit, said unitary sealing and compression metallic ring including a sealing ring portion having an external outwardly tapering, smooth surface having an axial length for extending into said second outer portion of said bore whereby said external smooth tapering surface of said sealing ring portion complements said internal taper free of any irregularities of said second outer portion, a radially outwardly extending shoulder having an outermost diameter circumscribing said metallic ring intermediate the longitudinal length of said metallic ring, a compression ring portion having a smooth inclined camming outer surface free of any irregularities that converges from the outer periphery of said outermost diameter of said shoulder toward the central longitudinal axis of said unitary metallic ring, said inclined camming outer surface sloping away from the outer periphery of said outermost diameter of said shoulder toward an inlet opening of said unitary metallic ring whereby the outer surface of said compression ring portion is smooth and threadless, and said unitary sealing and compression ring including a smooth, cylindrical, inner surface free of any irregularities, extending throughout the axial length of said metallic ring and a generally uniform diameter extending there through, and a fastening nut having a complementary cam surface arranged to engage said inclined camming outer surface of said compression ring portion, said fastening nut being adapted to be fitted onto an end portion of a conduit for securing the end portion of a metallic conduit to said inlet end, whereby said sealing ring portion is urged in sealing relationship with said second outer portion of said inlet end as said compression ring portion is compressed onto the end portion of a conduit, adapted to be received in said inlet end, as said fastening nut is threaded onto said inlet end, and wherein said unitary metallic ring is formed of brass so as to effect a positive surface to surface grounding of said metal conduit in the assembled position.