Patent ID: RE41473

Claim:
A board-to board electrical connector assembly for effecting a connection between two circuit boards, comprising: a first connector having a dielectric housing for mounting on a first circuit board; a plurality of first terminals mounted on the dielectric housing and each terminal including a tail portion for connection to an appropriate circuit trace on the first circuit board and a convex contact portion defining a continuous arcuate contact surface; a second connector having a dielectric housing for mounting on a second circuit board; a plurality of second terminals mounted on the dielectric housing of the second connector and each second terminal including a tail portion for connection to an appropriate circuit trace on the second circuit board and a contact projection for continuously sliding over the continuous arcuate contact surface of the convex contact portion of said first terminals from the first mating of the connectors until and including the final mated condition of the connectors; and whereby initial engagement of the contact projection of each second terminal with the convex contact portion of a respective one of the first terminals is at minimal engaging forces which increase as the contact projection slides over the convex contact portion and then decreases to allow the connectors to mate and the circuit boards to come together with minimal mating forces at the mated condition of the connectors.