Strip gaskets for EMI shielding

• US 20060260838A1
• Filed: 05/18/2006
• Published: 11/23/2006
• Est. Priority Date: 05/19/2005
• Status: Active Grant

• Current Assignee: Parker Intangibles LLC (Parker-Hannifin Corporation)
• Original Assignee: Parker-Hannifin Corporation
• Inventors: Ariel, John C.
• Granted Patent: US 7,375,291 B2
• Time in Patent Office: Days
• US Class Current: 174/350
• CPC Class Codes: H05K 9/0015 Gaskets or seals
• CPC Class Codes: Y10S 277/92 Seal including electromagnetic shielding feature

Abstract

A strip gasket utilizing a low closure force on an enclosing face for shielding electromagnetic interference is disclosed. The strip gasket includes an outer surface and an inner surface. The inner surface provides a hollow cross section region. Bending moments are created on surface peripheries of the inner surface and the outer surface, or both, to provide a low closure force on an enclosing face. The bending moment results in an increased surface area of the strip gasket providing a low resistance. Cauchy'"'"'s stress analysis reveals that a lower force is required to compress the strip gasket as compared to conventional strip gaskets.

Claims

1. A shielding strip gasket providing a low closure force on an enclosing face comprising:

an outer surface;

an inner surface;

said inner surface having a hollow cross sectional region; and

at least one bending moment created on one or more peripheries of said inner surface and said outer surface.

2. The strip gasket as claimed in claim 1, wherein at least one said bending moment is embossed on said inner surface.

3. The strip gasket as claimed in claim 1, wherein at least one said bending moment is embossed on said outer surface.

4. The strip gasket as claimed in claim 1, wherein at least one said bending moment is embossed on both said inner surface and said outer surface.

5. The strip gasket as claimed in claim 1, wherein said gasket is selected from the group consisting of a molded gasket, an extruded gasket, and a reinforced gasket.

6. The strip gasket as claimed in claim 1, wherein said hollow cross sectional region has a shape selected from the group consisting of a D shape, a rectangular shape, a P shape, an O shape, and a C shape.

7. The strip gasket as claimed in claim 1, wherein said gasket is reinforced using a Dacron fabric.

8. The strip gasket as claimed in claim 1, wherein said gasket is reinforced using a wire selected from the group consisting of an aluminum wire and a ferrex wire.

9. The strip gasket as claimed in claim 1, wherein said gasket comprises a conductive elastomer or a non conductive elastomer.

10. The strip gasket as claimed in claim 1, wherein said strip gasket is used for electromagnetic interference shielding or radiofrequency interference shielding.