Fluid filter construction

Claim 1

A HIGH PRESSURE FLUID FILTER CONSTRUCTION COMPRISING: A PLURALITY OF FINE GAUGE DISC-SHAPED FILTER ELEMENTS, EACH HAVING AN INNER AND AN OUTER PERIPHERY, SAID INNER PERIPHERY DEFINING A SIMILARLY LOCATED OPENING IN EACH; GENERALLY DISC-SHAPED SUPPORT MEMBERS OF COARSE MESH MATERIAL INTERPOSED BETWEEN AND INTIMATELY CONTACTING RESPECTIVE FILTER ELEMENTS, EACH HAVING AN INNER AND AN OUTER PERIPHERY SAID INNER PERIPHERY DEFINING A SIMILARLY LOCATED OPENING IN EACH IN REGISTRATION WITH SAID FILTER ELEMENT OPENINGS, SAID SUPPORT MEMBERS BEING RELATIVELY FREELY PERMEABLE FOR PERMITTING FREE FLOW OF FILTER FLUIDS BETWEEN ADJOINING FILTER ELEMENTS; ANNULAR METALLIC SPACING ELEMENTS OF SUBSTANTIALLY THE SAME THICKNESS AS SAID SUPPORT MEMBERS EXTENDING AROUND ALTERNATE OUTER AND INNER PERIPHERIES THEREOF; MEANS WELDING THE OUTER PERIPHERIES OF ALTERNATE PAIRS OF SAID FILTER ELEMENTS TO SAID SPACING ELEMENTS THEREBETWEEN TO SEAL THE SAME AGAINST SPACING ELEMENTS FLUID THEREBETWEEN THEREBY TO DEFINE A SERIES OF JOINED PAIRS OF SAID FILTER ELEMENTS HAVING A CONTINUOUS PERIPHERAL OPENING BETWEEN ANY TWO ADJOINING SAID PAIRS OF PASSAGE OF FILTER FLUIDS THEREBETWEEN; MEANS WELDING THE INNER PERIPHERIES OF ADJACENT FILTER ELEMENTS IN ADJOINING SAID PAIRS OF ELEMENTS TO SAID SPACING ELEMENTS THEREBETWEEN TO SEAL THE SAME AGAINST PASSAGE OF FILTERING FLUIDS THEREBETWEEN AND THEREBY DEFINING A CONTINUOUS INNER PERIPHERAL OPENING WITHIN EACH SAID JOINED PAIR OF FILTER ELEMENTS IN COMMUNICATION WITH SAID OTHER PERIPHERAL OPENINGS SOLELY THROUGH SAID FILTER ELEMENTS; AND RETAINING MEANS FORMING SAID FILTER ELEMENTS INTO A STACK AND RESISTING SEPARATION THEREOF UNDER FILTERING STRESSES.