Relay with time delay coil

Claim 1

In an electromagnetically operated device, the combination comprising: a base, an insulating stationary contact support mounted on the base, a plurality of stationary contacts mounted on the support, a movable contact carrier, movable contacts positioned by the carrier to engage the stationary contacts and provide selected circuit opening and closing functions when the carrier is moved from a first position to a second position, an electromagnet assembly mounted on the base, said electromagnet assembly including a laminated magnet iron stationary magnet positioned on the base, a laminated magnet iron armature connected to the carrier and movable between two positions relative to the stationary magnet part for moving the carrier from the first to the second position and a coil assembly positioned on the stationary magnet part for inducing a magnet flux in the stationary magnet part and the armature for causing the armature and carrier to move from the first position to the second position a selected time interval after the coil assembly is energized, said coil assembly including a molded shell having a pair of spaced cavities, a projection extending upwardly in a first of said pair of cavities from a bottom wall of the shell, a passage extended through the projection, a coil winding positioned within the first cavity and surrounding the projection, a pair of terminals having wire fastening portions disposed externally of the shell and portions within a second of said pair of cavities, and means including electric circuit having solid state components positioned within the second cavity and connected between the portions of the terminals within the second cavity and the coil winding in the first cavity for delaying the energization of the coil winding for a predetermined timed interval when the electric power is initially applied to the terminals.