Connection system for printed circuit boards

Claim 1

A connection system for electrically interconnecting circuits on a printed circuit mother board and on a printed circuit daughter board, said system comprising: first connector having an elongated slot opening outwardly and a plurality of electrical contact means with spring means disposed on both sides of said slot and pin means extending outwardly therefrom for electrical engagement with circuits on the mother board; and a second connector comprising housing means and electrical contact means, said housing means including an elongated, outwardly extending blade means on one side, slot means in an opposite side for receiving the daughter board, cavities on each side of said slot with said cavities on one side being longitudinally offset relative to the facing cavities and further said cavities communicating with said slot through notches with the notches on one side of said slot facing the notches on the other side, said contact means having finger means disposed on said blade means for electrically engaging said spring means upon inserting said blade means in said slot in said first connector, said contact means further having contact are means disposed in said cavities and projecting into said slot through said notches for electrically engaging circuits on the daughter board which may be inserted in said slot means and further having spring section means intermediate said finger means and contact arm means, said section means having a concave-convex shape to provide an elongated spring section over a short linear distance, said contact arm means being formed normal to the plane of said finger means and spring section means.