Mold assembly for forming pregrouted ceramic tile sheets

Claim 1

A MOLD ASSEMBLY FOR FORMING PREGROUTED CERAMIC TILE SHEETS COMPRISING UPPER AND LOWER MATING MOLD SECTIONS, SAID SECTIONS BEING FORMED OF A PLURALITY OF CRISSCROSSING RIBS SEPARATED BY OPENED WELLS, A PLURALITY OF CRISS-CROSSING GROOVES FORMED IN TE FACES OF SAID MOLD SECTIONS MIDWAY OF SAID RIBS, A RESILIENT GASKET RECEIVED IN THE GROOVES OF EACH MOLD SECTION, SAID GASKETS EACH FORMING AN ALIGNED LATTICE NETWORK OF CRISS-CROSSING RIBS EXTENTING ABOVE THE FACES OF SAID MOLDS ADAPTED TO SUPPORT THE EGES OF SPACED CERAMIC TILES BRIDGING SAID WELLS, MEANS FOR CLAMPING SAID MOLD SECTIONS TOGETHER WHEREBY THE PERIPHERAL EDGES OF THE TILES ARE CLAMPED BETWEEN THE ALIGNED RIBS OF SAID GASKETS TO DEFINE AN ENCLOSED GROUT SPACE BETWEEN ADJACENT TILES, A FRAME FOR ENGAGING THE PERIPHERAL EDGES OF SAID GASKETS, SAID FRAME FOR ENGAGING TWO ADJACENT INNER EDGES TAPERED TO TIGHTLY ABUT THE EDGES OF THE TILES CLAMPED BETWEEN SAID MOLD SECTIONS AND TWO OTHER ADJACENT INNER EDGES TAPERED TO DEFINE A SPACE FOR GROUT MATERIAL BETWEEN SAID OTHER EDGES AND THE EDGES OF TILES CLAMPED BETWEEN SAID MOLD SECTIONS, A GROUT FILLING SPRUE COMMUNICATING WITH THE JUNCTURE OF SAID GROUT SPACES ALONG SAID TWO OTHER EDGES OF SAID FRAME, MEANS FOR INJECTING FLUID GROUT MATERIAL INTO SAID CLAMPED MOLD SECTIONS TO FILL THE SPACES BETWEEN ADJACENT TILES, AND MEANS FOR HEATING SAID CLAMPED MOLD SECTIONS TO CURE SAID GROUT MATERIAL TO A FLEXIBLE ELASTOMER.