초록 ▼

A gasket having two opposed faces and an edge disposed therebetween is given a wide coating on the edge. The coating is sufficiently wide so that it goes from corner to corner on the edge and protrudes past the corner on at least one side of the gasket in a direction perpendicular to a facial plane

A gasket having two opposed faces and an edge disposed therebetween is given a wide coating on the edge. The coating is sufficiently wide so that it goes from corner to corner on the edge and protrudes past the corner on at least one side of the gasket in a direction perpendicular to a facial plane of the gasket. The coating protrudes in an amount effective to give the gasket a sealing ability which is better than the sealing ability of the same gasket if it had a coating merely extending from corner to corner without protruding.

대표청구항 ▼

[ I claim:] [1.] A sealing gasket comprising a sheet with two opposed, substantially parallel faces, said gasket further having an edge surface disposed between each face, said edge surface being around an aperture, said edge surface being substantially perpendicular to each face, the edge surface f

[ I claim:] [1.] A sealing gasket comprising a sheet with two opposed, substantially parallel faces, said gasket further having an edge surface disposed between each face, said edge surface being around an aperture, said edge surface being substantially perpendicular to each face, the edge surface further having a sealing coating disposed thereon which is wider than the edge surface in a face to face direction parallel to the edge surface so that the coating protrudes at least about 1 mil beyond at least one face and extends past the face in a direction perpendicular to the face to provide a barrier against fluids, said coating further covering all portions of the edge in order to give the gasket a good sealing ability, and said coating further being thick enough on the edge to seal the gasket against fluids from going through the edge, further providing that the sheet comprises fiber in a amount in the range of from about 5 to about 70% by weight, filler in an amount in the range of from about 1 to about 92% by weight, and binder in amount of from about 3 to about 40% by weight, said sheet further being compressible and porous and the edge of the aperture having pores which are sealed off by the coating on the edge, further providing that to preserve compression failure resistance less than about 50% of the gasket has a coating for sealing ability.