Connector for a ceramic substrate

Claim 1

An electrical connector for removably mounting a substrate to a printed circuit board with the substrate being of the type having one end adapted to receive thereon a test or card edge connector, said electrical connector comprising: a. an elongated housing having an open top and an open end through which one end of a substrate may extend and with the side walls, floor and other end wall defining a substrate-receiving cavity, and vertical cells spaced along the inside surfaces of at least the two opposing side walls and further bores extending downwardly through the housing floor from the cells; b. a plurality of spring members positioned in the cells with a lower end extending through the bores for insertion into a circuit board and an upper end bent back around to form a U-shape with the free end thereof being bent to project laterally into the cavity to provide a contact arm, said spring members being outwardly curved between the upper and lower ends with the amount of curvature being a radius of from about one inch to about two and one-half inches; and c. a hold down frame having biasing means thereon and removably attached to the housing for biasing a substrate which may be positioned in the cavity against the laterally projecting contact arms.