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US 6,550,783 B2Granted
Sealed end gasket
AssigneeLaird Technologies, Inc.
InventorAnthony M. Sosnowski
Life of this patent
Estimating the term…
Abstract
The disclosure describes a method of sealing the ends of fabric on a radio frequency interference (RFI) gasket and a description of the gasket made by such method. The method used electrically conductive material to cover a foam interior and then sealing the exposed ends of all six sides of the covering, creating a radio frequency interference (RFI) gasket.
Claims19
A gasket for reducing radio frequency interference in electrical devices comprising:
- an inner gasket body, wherein said inner gasket body comprises a top section, a bottom section, a pair of sidewalls in a length direction extending from the top section to the bottom section and a pair of sidewalls in a width direction from the top section to the bottom section;
- an electrically conductive fabric disposed around said inner gasket body to provide an overlap of fabric edges extending in said length direction and to provide fabric ends extending in said width direction, wherein said ends of said fabric are sealed with the opposing ends of said fabric in a sealing operation in said width direction and wherein said overlap of said fabric edges is sealed in a sealing operation in said length direction.
A method of making a gasket for reducing radio frequency interference in electrical devices comprising the steps of:
- providing a length of fabric with electrically conductive properties having a top surface, a bottom surface and first and second regions extending in the length direction and adhesive on a portion of the top surface along at least a first edge region and repeated adhesive strips extending at least partially from edge to edge on the top surface, perpendicular to the length direction;
- disposing an inner gasket body between the repeated adhesive strips extending in an edge to edge direction between the first and second edge regions;
- folding the second edge region of the fabric over the top of the inner gasket body and folding the first edge, which has adhesive on the top surface thereof over the inner gasket body, such that the adhesive on the top surface of said other side is in contact with what had been the bottom surface of the second edge region;
- cutting the fabric cross-wise at the adhesive strips, the cut location immediate to the adhesive strip;
- and
- sealing the adhesive in the cross-wise direction, thereby providing a fabric covered gasket in which the fabric covers the top and bottom sides in the width direction and the sides in the length direction of the inner gasket body.
3 more elements
Dependencies are inferred from the claim text.