Method of producing coupling washer-equipped

Claim 1

A METHOD OF PRODUCING A COMBINED FILTER SCREEN AND COUPLING WASHER COMPRISING STEPS AS FOLLOWS: FORMING A CONCAVO-CONVEX FILTER SCREEN HAVING AN INTEGRAL ANNULAR ANCHORING FLANGE PROJECTING OUTWARDLY FROM ITS BASE PORTION; PROVIDING A MOLD HAVING A BODY COMPRISING AN OPENTOPPED VERTICAL AXIS ANNULAR CAVITY, SAID CAVITY BEING DEFINED BY CONCENTRIC INNER AND OUTER WALLS AND A BOTTOM WALL, THE OUTER WALL OF THE CAVITY BEING OF A DIAMETER GREATER THAN THE OUTSIDE DIAMETER OF THE SCREEN ANCHORING FLANGE AND HAVING A DEPTH AT LEAST EQUAL TO THE THICKNESS OF THE FILTERING WASHERD TO BE PRODUCED, THE INNER WALL OF THE MOLD CAVITY BEING OF A DIAMETER TO SNUGLY RECEIVE AND BE IN HEAT-CONDUCTING RELATIONSHIP WITH THE BASE PORTION OF THE CONCAVO-CONVEX FILTERING SCREEN AND HAVING A DEPTH GREATER THAN THE THICKNESS OF THE FILTERING WASHER TO BE PRODUCED; TELESCOPICALLY APPLYING THE BASE PORTION OF THE CONCAVO-CONVEX SCREEN OVER THE INNER CAVITY-DEFINING WALL WITH ITS ANCHORING FLANGE SPACED FROM THE BOTTOM OF THE CAVITY AND ITS LOWER INTERNAL PORTION IN HEAT-CONDUCTING RELATIONSHIP WITH SAID INNER WALL, PREHEATING THE MOLD AND SCREEN TO AN ELEVATED TEMPERATURE, WHILE THE MOLD AND SCREEN ARE AT A SUITABLY ELEVATED TEMPERATURE FILLING THE MOLD CAVITY TO A DESIRED LEVEL ABOVE THE TOP OF THE SCREEN ANCHORING FLANGE WITH A LIQUID MATERIAL OF A CHARACTER THAT IS FREE-FLOWING AT ROOM TEMPERATURE BUT IS CONVERTED TO A RESILIENT SOLID STATE UPON SUBJECTION TO AN ELEVATED TEMPERATURE, THE ELEVATED TEMPERATURE OF THE MOLD AND SCREEN RESULTING FROM PREHEATING AND PRESENT AT THE TIME OF INTRODUCTION OF THE LIQUID MATERIAL INTO THE MOLD BEING SUFFICIENTLY HIGH TO CAUSE RAPID SEMI-HARDENING OF THE LIQUID MATERIAL AT AREAS OF CONTACT WITH THE SCREEN SUCH AS TO STOP FLOW OF MATERIAL OVER THE SURFACE OF THE SCREEN BY CAPILLARY ACTION, SUBSEQUENTLY SUBJECTING THE MOLD AND SCREEN TOGETHER WITH THE LIQUID MATERIAL TO SUCH AN ELEVATED TEMPERATURE AND FOR SUCH TIME AS IS NECESSARY TO CONVERT THE ENTIRE BODY OF SAID MATERIAL TO A RESILIENT SOLID STATE SUITABLE FOR USE AS A CONDUIT COUPLING WASHER, AND FINALLY REMOVING THE WASHER-EQUIPPED FILTERING SCREEN FROM THE MOLD.

Claim 2

A METHOD OF PRODUCING A COMBINED FILTER SCREEN AND COUPLING WASHER COMPRISING STEPS AS FOLLOWS: FORMING A CONCAVO-CONVEX FILTER SCREEN HAVING AN INTEGRAL ANNULAR ANCHORING FLANGE PROJECTING OUTWARDLY FROM ITS BASE PORTION; PROVIDING A MOLD HAVING A BODY COMPRISING AN OPENTOPPED VERTICAL AXIS ANNULAR CAVITY, SAID CAVITY BEING DEFINED BY CONCENTRIC INNER AND OUTER WALLS AND A BOTTOM WALL, THE OUTER WALL OF THE CAVITY BEING OF A DIAMETER GREATER THAN THE OUTSIDE DIAMETER OF THE SCREEN ANCHORING FLANGE AND HAVING A DEPTH AT LEAST EQUAL TO THE THICKNESS OF THE FILTERING WASHERD TO BE PRODUCED, THE INNER WALL OF THE MOLD CAVITY BEING OF A DIAMETER TO SNUGLY RECEIVE AND BE IN HEAT-CONDUCTING RELATIONSHIP WITH THE BASE PORTION OF THE CONCAVO-CONVEX FILTERING SCREEN AND HAVING A DEPTH GREATER THAN THE THICKNESS OF THE FILTERING WASHER TO BE PRODUCED; TELESCOPICALLY APPLYING THE BASE PORTION OF THE CONCAVO-CONVEX SCREEN OVER THE INNER CAVITY-DEFINING WALL WITH ITS ANCHORING FLANGE SPACED FROM THE BOTTOM OF THE CAVITY AND ITS LOWER INTERNAL PORTION IN HEAT-CONDUCTING RELATIONSHIP WITH SAID INNER WALL, PREHEATING THE MOLD AND SCREEN TO AN ELEVATED TEMPERATURE, WHILE THE MOLD AND SCREEN ARE AT A SUITABLY ELEVATED TEMPERATURE FILLING THE MOLD CAVITY TO A DESIRED LEVEL ABOVE THE TOP OF THE SCREEN ANCHORING FLANGE WITH A LIQUID MATERIAL OF A CHARACTER THAT IS FREE-FLOWING AT ROOM TEMPERATURE BUT IS CONVERTED TO A RESILIENT SOLID STATE UPON SUBJECTION TO AN ELEVATED TEMPERATURE, THE ELEVATED TEMPERATURE OF THE MOLD AND SCREEN RESULTING FROM PREHEATING AND PRESENT AT THE TIME OF INTRODUCTION OF THE LIQUID MATERIAL INTO THE MOLD BEING SUFFICIENTLY HIGH TO CAUSE RAPID SEMI-HARDENING OF THE LIQUID MATERIAL AT AREAS OF CONTACT WITH THE SCREEN SUCH AS TO STOP FLOW OF MATERIAL OVER THE SURFACE OF THE SCREEN BY CAPILLARY ACTION, SUBSEQUENTLY SUBJECTING THE MOLD AND SCREEN TOGETHER WITH THE LIQUID MATERIAL TO SUCH AN ELEVATED TEMPERATURE AND FOR SUCH TIME AS IS NECESSARY TO CONVERT THE ENTIRE BODY OF SAID MATERIAL TO A RESILIENT SOLID STATE SUITABLE FOR USE AS A CONDUIT COUPLING WASHER, AND FINALLY REMOVING THE WASHER-EQUIPPED FILTERING SCREEN FROM THE MOLD.