Electromagnetic shielding system for printed circuit board

• US 6,501,016 B1
• Filed: 05/02/2000
• Issued: 12/31/2002
• Est. Priority Date: 06/02/1998
• Status: Expired due to Term

• Current Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Original Assignee: Laird Technologies Incorporated (DuPont de Nemours, Inc.)
• Inventors: Sosnowski, Anthony Michael
• Primary Examiner(s): Reichard, Dean A.
• Assistant Examiner(s): OLIVA, CARMELO B
• Application Number:
  US09/563,950
• Time in Patent Office: 973 Days
• Field of Search: 174/35.R, 174/35.GC, 174/35.MS, 361/818, 361/816, 361/800, 361/799
• US Class Current: 174/382
• CPC Class Codes: H05K 9/0032 having multiple parts, e.g. frames mating with lids
• CPC Class Codes: Y10S 428/901 Printed circuit
• CPC Class Codes: Y10T 156/1056 Perforating lamina
• CPC Class Codes: Y10T 156/1062 Prior to assembly
• CPC Class Codes: Y10T 156/1064 Partial cutting [e.g., grooving or incising]
• CPC Class Codes: Y10T 156/1082 Partial cutting bonded sandwich [e.g., grooving or incising]
• CPC Class Codes: Y10T 225/30 Breaking or tearing apparatus
• CPC Class Codes: Y10T 428/15 Sheet, web, or layer weakened to permit separation through thickness
• CPC Class Codes: Y10T 83/0495 Making and using a registration cut

Abstract

An electromagnetic shielding system for a printed circuit board includes a shielding enclosure having a plurality of side walls and an integral top surface, the top surface including a scored line for allowing removal of an interior portion of the top surface to thereby define a remaining perimeter rim, and a replacement cover for attachment to the remaining cover rim. The replacement cover includes a metal foil having an adhesive surface or a sheet metal material.

Claims

1. An electromagnetic shielding system for a printed circuit board comprising:

a shielding enclosure including a plurality of side walls and an integral top surface, said top surface including a scored line for allowing removal of an interior portion of said top surface to thereby define a remaining perimeter rim and further including at least one aperture with at least a portion thereof located on said scored line; and

a replacement cover including a plurality of locating elements for assisting in self locating said replacement cover onto said remaining perimeter rim.

2. The shielding system of claim 1, wherein said replacement cover includes a metal foil having an adhesive surface.

3. The shielding system of claim 1, wherein said replacement cover includes a main portion generally corresponding in size and shape to said remaining perimeter rim.

4. The shielding system of claim 3, wherein said replacement cover further includes a plurality of side flanges extending from said main portion.

5. The shielding system of claim 4, wherein said replacement cover further includes a plurality of predefined bend lines disposed between said main portion and said side flanges.

6. The shielding system of claim 1, wherein said replacement cover is made from a metal material.

7. The shielding system of claim 6, wherein said replacement cover generally corresponds in size and shape to said remaining perimeter rim.

8. The shielding system of claim 1, wherein said scored line is defined by a continuous scored line.

9. The shielding system of claim 1, wherein said scored line is disposed approximately 0.02 in. from an edge surface of said top surface.

10. The shielding system of claim 1, wherein said shielding enclosure is made from tin plated steel.

11. The shielding system of claim 1, wherein said scored line is severed for allowing removal of the interior portion of said top surface.

12. The shielding system of claim 1, wherein said locating elements include etched elements.

13. The shielding system of claim 1, wherein said locating elements include lanced elements.