Patent ID: 7275945

Claim:
An electronic system, comprising: a circuit board module having a circuit board and connectors mounted along an edge of the circuit board; a housing; and a chassis configured to attach to the housing and to provide shielding to the circuit board, the chassis having: a base configured to reside in an installed position relative to the circuit board, a frame portion coupled to the base, the frame portion defining connector openings corresponding to the connectors of the circuit board, and spring fingers extended from the frame portion, the spring fingers being configured to provide electrical pathways from the connectors of the circuit board to the frame portion when the base resides in the installed position relative to the circuit board, each spring finger having a contact portion configured to contact one of the connectors, and a mid portion which interconnects that contact portion with the frame portion, each spring finger forming (i) a first cantilever at a first location where the mid portion of that spring finger attaches to the frame portion and (ii) a second cantilever at a second location where the contact portion of that spring finger attaches to the mid portion of that spring finger, a distance between the first and second locations defining an overall length of that spring finger; wherein the first cantilever formed by each spring finger provides a first spring constant; and wherein the second cantilever formed by each spring finger provides a second spring constant which is different than the first spring constant wherein, for each spring finger, the first cantilever and the second cantilever formed by that spring finger are both constructed and arranged to deflect in a single common direction in response to contact by a connecting body as the connecting body passes through a connector opening to connect with a respective connector of the circuit board.