Expansion joints for conduits

Claim 1

AN EXPANSION JOINT FOR JOINING, AND ACCOMMODATING EXPANSION AND CONTRACTION OF, CONDUITS CONVEYING A RELATIVELY HOT FLUID STREAM, COMPRISING: (A) OPPOSING AND LONGITUDINALLY SPACED APART METAL TERMINAL PORTIONS FOR SECURING SAID JOINT TO SAID CONDUITS; (B) AN OUTER FABRIC COVER OF WEATHER RESISTANT MATERIAL AND FORMING WITH SAID TERMINAL PORTIONS A FLUID TIGHT SEAL; (C) AT LEAST ONE FELT FORMED OF INORGANIC FIBERS; (D) FORAMINOUS METAL, AT LEAST A PORTION OF WHICH IS INWARDLY OF SAID FELT, IN RESPECT TO SAID FORAMINOUS HAVING APERTURES SUFFICIENTLY SMALL FOR SAID FORAMINOUS METAL TO FORM ATTRITION DETERRING MEANS FOR SAID FELT; (E) FLEXIBLE METALLIC SUPPORT MEANS LOCATED INWARDLY, IN RESPECT TO SAID JOINT, OF AND AT LEAST PARTIALLY SUPPORTING SAID FELT; AND (F) SAID COVER, SAID FELT, AND SAID FORAMINOUS METAL EXTENDING FROM ONE TO THE OTHER OF SAID TERMINAL PORTIONS, AND AT LEAST SAID FORAMINOUS METAL AND SAID OUTER COVER BEING SECURED TO SAID TERMINAL PORTIONS.