Vibration isolation and sealing gasket

In a vibration isolation system including vibratable base means having a plurality of threaded holes provided therein in a predetermined closed pattern, cover means spaced apart from the base means having a plurality of clearance holes provided therein in a pattern corresponding to the pattern of said threaded holes, and a plurality of bolt means having head means and inserted through said clearance holes and tightened into the theaded holes, a vibration isolation and sealing gasket comprising:

• a bead-shaped sealing portion encircling the predetermined closed pattern and having a pair of surfaces compressible between the cover means and the base means to at least a predetermined minimum compression to form a pair of parallel sealing surfaces having a first spring rate therebetween, flange means connected adjacent to the sealing portion between the pair of parallel sealing surfaces and distal therefrom, a plurality of cylindrical protrusions parallel to the plurality of bolt means, each of said plurality of cylindrical protrusions having a concentric through hole for passage of the bolt means therethrough to axially convolute the cylindrical protrusions between the plurality of head means and the cover means so as to provide a spring rate therebetween approximately equal to the first spring rate between the parallel sealing surfaces, and stabilizing means integral with the sealing portion for holding the sealing portion in a fixed position relative to the cylindrical protrusions.

A vibration isolation and sealing gasket comprising:

• to identical oval bead-shaped sealing portions extending parallel to and spaced apart from each other forming a closed loop;
• a rectangular cross-section flange connecting said sealing portions;
• a plurality of hollow cylindrical protrusions integral with and spaced along the closed loop flange and extending perpendicular to a plane defined by the closed loop flange;
• said plurality of cylindrical protrusions axially convolutable to a configuration wherein the spring rate of the axially convoluted protrusion is equal to the spring rate of the sealing portions when compressed at least a predetermined minimum amount parallel to the axis of said plurality of cylindrical protrusions;
• and a plurality of sleeve means with each of said sleeve means disposed within one of said plurality of cylindrical protrusions for defining the predetermined minimum amount of compression of the sealing portion parallel to the axes of the plurality of cylindrical protrusions.

A vibration isolation and sealing gasket comprising:

• an oval bead-shaped sealing portion forming a closed loop and having the major axis of the oval perpendicular to the plane of the closed loop;
• a plurality of flanges extending into said closed loop;
• a plurality of additional oval bead-shaped sealing portions encircling said plurality of flanges;
• a plurality of cylindrical protrusions perpendicular to the plane of the closed loop, each of said plurality of cylindrical protrusions integral with one of said plurality of flanges and each having a through-hole provided therein concentric therewith;
• said plurality of cylindrical protrusion axially convolutable to a configuration wherein the spring rate of the axially convoluted protrusion is equal to the spring rate of the sealing portions when compressed at least a predetermined minimum amount parallel to the axis of said plurality of cylindrical protrusions;
• a plurality of sleeve means with each of said sleeve means disposed within one of said plurality of cylindrical protrusions for establishing the predetermined minimum amount of compression of the sealing portion parallel to the axes of the plurality of cylindrical protrusions;
• and a metal stabilizing band embedded in the oval bead-shaped sealing portion encircling the outer perpendicular to the plane of the closed loop.