Invention Grant
- Patent Title: EMI shielding scheme using sandwiched sheet metal
- Patent Title (中): 使用夹层金属薄膜的EMI屏蔽方案
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Application No.: US12818776Application Date: 2010-06-18
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Publication No.: US08169778B2Publication Date: 2012-05-01
- Inventor: Jean Doglio , Steven J. Zielnicki , Vibora Sim
- Applicant: Jean Doglio , Steven J. Zielnicki , Vibora Sim
- Applicant Address: US TX Round Rock
- Assignee: Dell Products L.P.
- Current Assignee: Dell Products L.P.
- Current Assignee Address: US TX Round Rock
- Agency: Hamilton & Terrile, LLP
- Agent Stephen A. Terrile
- Main IPC: G06F1/16
- IPC: G06F1/16

Abstract:
A peripheral card EMI shielding scheme which comprises a sandwich of three layers. The first layer comprises a chassis rear wall (e.g., constructed of sheet metal). The next layer, which in certain embodiments is the middle of the sandwich, comprises a relatively thin plate (e.g., 0.15 mm+/−0.1 mm) with spring arms. The third layer comprises a sheet metal plate (in certain embodiments, the third layer has a similar thickness to the rear wall). The thick sheet metal plate completely covers the thin plate, except for areas where the spring arms protrude. The three plates are staked together by a method similar to an extrude-and-roll process (e.g., where one piece is fastened to another without the need for additional hardware or welding).
Public/Granted literature
- US20110310546A1 EMI Shielding Scheme Using Sandwiched Sheet Metal Public/Granted day:2011-12-22
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