Conduit joint construction

Claim 1

A FLUID JOINT COMPRISING IN COMBINATION: (A) A PAIR OF OPPOSED FLANGE MEMBER, AT LEAST ONE OF SAID FLANGE MEMBERS HAVING A RECESSED PORTION COOPERATING WITH OTHER OF SAID FLANGE MEMBERS TO PROVIDE RADIAL AND AXIAL WALL PORTIONS OF A CHAMBER FOR RECEIVING A GASKET; (B) AN ANNUAR METALLIC GASKET HAVING A GENERALLY SSHAPED CONFIGURATION WHEN VIEWED IN CROSS-SECTION FROM AN AXILE PLANE AND INCLUDING: CONVEX AND CONCAVE PORTIONS, IN RESPECT TO THE CENTRAL AXIS OF SAID JOINT, SAID CONCAVE AND CONVEX PORTIONS HAVING THEIR AXIALLY REMOTE OUTER CURVED PORTIONS EACH LYING IN A SEPARATE PLANE NORMAL TO SAID CENTRAL AXIS AND TANGENT TO THE RESPECTIVE CONCAVE AND CONVEX PORTIONS, SAID PLANES DEFINING THE FREE EXPANDED AXIAL WIDTH OF SAID GASKET WITH A FIRST END LEG EXTENDING RADIALLY INWARD FROM SAID CONVEX PORTION AND BEING WITHIN SAID AXIAL WIDTH OF SAID GASKET SUCH THAT INITIAL CONTACT, OF SAID FIRST LEG WITH ITS RESPECTIVE RADIAL WALL PORTION OF SAID CHAMBER, IS AT LEAST AT THE AXIALLY REMOTE OUTER CURVED PORTION OF SAID CONVEX PORTION, WITH A SECOND END LEG EXTENDING RADIALLY OUTWARD FROM SAID CONCAVE PORTION AND BEING WITHIN SAID AXIAL WIDTH OF SAID GASKET SUCH THAT INITIAL CONTACT, OF SAID SECOND LEG WITH ITS RESPECTIVE RADIAL WALL PORTION OF SAID CHAMBER, IS AT LEAST AT THE AXIALLY REMOTE OUTER CURVED PORTION OF SAID CONVEX PORTION; (C) A CENTRAL PORTION JOINING AND RADIALLY SPACING SAID CONCAVE AND SAID CONVEX PORTIONS; (D) POSITIONING MEANS FOR POSITIONING SAID CONVEX AND SAID CONCAVE PORTIONS OF SAID GASKET IN SPACED RELATION WITH THE AXIAL EXTENDING SURFACES OF SAID WALL PORTIONS; AND (E) SECURING MEANS FOR SECURING SAID FLANGE MEMBERS IN MUTUALLY FACE-TO-FACE AXIAL RELATION.