Strip gaskets for EMI shielding
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.
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 embossed on the periphery of said inner surface and at least one bending moment embossed on the periphery of said outer surface, wherein at least one bending moment is positioned along the vertical axis of the gasket, and at least one bending moment is positioned along the horizontal axis of the gasket.
2. The strip gasket as claimed in claim 1 , wherein at least two bending moments are positioned on said inner surface or said outer surface in opposed relationship.
3. 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.
4. 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.
5. The strip gasket as claimed in claim 1 , wherein said gasket is reinforced using a Dacron fabric.
6. 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.
7. The strip gasket as claimed in claim 1 , wherein said gasket comprises a conductive elastomer or a non conductive elastomer.
8. The strip gasket as claimed in claim 1 , wherein said strip gasket is used for electromagnetic interference shielding or radiofrequency interference shielding.