Patent ID: 6189435
Filing Date: 2001-02-20
Classification: F01B,F16J

Abstract:
A diaphragm, comprising:a fabric support member having opposite sides, the fabric support member being formed by a plurality of flexible strands of material extending generally transversely across each other to define a plurality of intersections and voids therebetween;a first elastomeric coating on one of the sides of the fabric support member; anda second elastomeric coating on the other side of the fabric support member, the second elastomeric coating being formed into a plurality of spaced apart ribs, at least some of the ribs covering at least some of the intersections;the fabric support member and the first and second elastomeric coatings being formed into a cup shape having a central axis and interior and exterior surfaces; andthe ribs extending radially and being angularly spaced about the central axis.