Chassis with multi-cantilever spring fingers for EMI...

Details Chassis with multi-cantilever spring fingers for EMI... Chassis with multi-cantilever spring fingers for EMI...

2007-10-02

2007-10-02

Gilman, Alexander (Department: 2833)

Electrical connectors

Including arc suppressing or extinguishing means

Reexamination Certificate

active

11252116

ABSTRACT:
A chassis utilizes spring fingers having contact portions and mid portions where each spring finger forms multiple cantilevers to provide different spring constants. Accordingly, the increase in force resulting from displacement can be better controlled and even minimized for certain ranges of displacement. In particular, each spring finger can be configured to perform in an operating range characterized by a smaller spring constant. As a result, the force increase in this operating range is slower thus accommodating circuit boards with large connector height variations without significantly changing the normal contact force. Such operation enables the chassis to consistently pass EMI and ESD testing, as well as provide more reliable device operation.

REFERENCES:
patent: 5267882 (1993-12-01), Davis
patent: 5348484 (1994-09-01), Sorrentino
patent: 5735712 (1998-04-01), Haas et al.
patent: 5934940 (1999-08-01), Maranto et al.
patent: 6618271 (2003-09-01), Erickson et al.
patent: 2006/0092608 (2006-05-01), Liang et al.
patent: 2006/0139895 (2006-06-01), Justason et al.

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