Abstract 1. IN A METHOD OF MANUFACTURING A FINE-GRAINED GLASS CERAMIC ARTICLE FROM A THERMALLY-CRYSTALLIZABLE VITREOUS MATERIAL, WHEREIN THE VITREOUS MATERIAL IS SHAPED TO FORM A SHAPED ARTICLE, THE ARTICLE IS INITIALLY HEATED TO A TEMPERATURE IN THE RANGE TG TO TG+100* C. WHERE TG IS THE TRANSFORMATION TEMPERATURE OF THE VITEROUS MATERIAL, TO CONDITION THE MATERIAL, BY GENERATING THEREIN A UNIFORM DISPERSION OFF EMBYRONIC CENTER OFF INCIPIENT CYRSTAL GROWTH, FOR SUBSSEQUENT CYRSTALLIZATION AND THE ARTICLE IS RAPIDLY HEATED AT A RATE OF AT LEAST 30* C. PER MINUTE TO A PREDETERMINED CRYSTALLIZATION, AND THE ARTICLE IS FINE-GRAINED CRYSTAL GROWTH ON THOSE EMBYONIC CENTERS, THE IMPROVEMENT WHEREIN THE ARTICL IS SHAPED INTO AN ARTICLE HAVING A MAJOR AXIS OR PLANE ABOUT WHICH THE ARTICLE IS SYMMETRICAL AND THE ARTICLE IS HEATED TO SAID CRYSTALLIZATION TEMPERATURE WHILE TTHE ARTICLE IS SUSPEND INGLY SUPPORTED WITH SAID MAJOR AXIS OR PLAN OF SYMMETRY EXTENDING DOWNWARDLY AND DISPOSED IN A SUBSTANTIALLY VERTICAL ATTITUDE, WITHOUT SUPPORT OF THE GLASS AGAINST DEFORMATION, THE GLASS BEING SUFFICIENT FLUID SO THAT CRYSTALLISATION TAKES PLACE WITH STRESS RELIEF. D R A W I N G
IN A METHOD OF MANUFACTURING A FINE-GRAINED GLASS CERAMIC ARTICLE FROM A THERMALLY-CRYSTALLIZABLE VITREOUS MATERIAL, WHEREIN THE VITREOUS MATERIAL IS SHAPED TO FORM A SHAPED ARTICLE, THE ARTICLE IS INITIALLY HEATED TO A TEMPERATURE IN THE RANGE TG TO TG+100* C. WHERE TG IS THE TRANSFORMATION TEMPERATURE OF THE VITEROUS MATERIAL, TO CONDITION THE MATERIAL, BY GENERATING THEREIN A UNIFORM DISPERSION OFF EMBYRONIC CENTER OFF INCIPIENT CYRSTAL GROWTH, FOR SUBSSEQUENT CYRSTALLIZATION AND THE ARTICLE IS RAPIDLY HEATED AT A RATE OF AT LEAST 30* C. PER MINUTE TO A PREDETERMINED CRYSTALLIZATION, AND THE ARTICLE IS FINE-GRAINED CRYSTAL GROWTH ON THOSE EMBYONIC CENTERS, THE IMPROVEMENT WHEREIN THE ARTICL IS SHAPED INTO AN ARTICLE HAVING A MAJOR AXIS OR PLANE ABOUT WHICH THE ARTICLE IS SYMMETRICAL AND THE ARTICLE IS HEATED TO SAID CRYSTALLIZATION TEMPERATURE WHILE TTHE ARTICLE IS SUSPEND INGLY SUPPORTED WITH SAID MAJOR AXIS OR PLAN OF SYMMETRY EXTENDING DOWNWARDLY AND DISPOSED IN A SUBSTANTIALLY VERTICAL ATTITUDE, WITHOUT SUPPORT OF THE GLASS AGAINST DEFORMATION, THE GLASS BEING SUFFICIENT FLUID SO THAT CRYSTALLISATION TAKES PLACE WITH STRESS RELIEF.
Claim 2
Dependent Claim
177 words
IN A METHOD OF MANUFACTURING A FINE-GRAINED GLASS CERAMIC ARTICLE FROM A THERMALLY-CRYSTALLIZABLE VITREOUS MATERIAL, WHEREIN THE VITREOUS MATERIAL IS SHAPED TO FORM A SHAPED ARTICLE, THE ARTICLE IS INITIALLY HEATED TO A TEMPERATURE IN THE RANGE TG TO TG+100* C. WHERE TG IS THE TRANSFORMATION TEMPERATURE OF THE VITEROUS MATERIAL, TO CONDITION THE MATERIAL, BY GENERATING THEREIN A UNIFORM DISPERSION OFF EMBYRONIC CENTER OFF INCIPIENT CYRSTAL GROWTH, FOR SUBSSEQUENT CYRSTALLIZATION AND THE ARTICLE IS RAPIDLY HEATED AT A RATE OF AT LEAST 30* C. PER MINUTE TO A PREDETERMINED CRYSTALLIZATION, AND THE ARTICLE IS FINE-GRAINED CRYSTAL GROWTH ON THOSE EMBYONIC CENTERS, THE IMPROVEMENT WHEREIN THE ARTICL IS SHAPED INTO AN ARTICLE HAVING A MAJOR AXIS OR PLANE ABOUT WHICH THE ARTICLE IS SYMMETRICAL AND THE ARTICLE IS HEATED TO SAID CRYSTALLIZATION TEMPERATURE WHILE TTHE ARTICLE IS SUSPEND INGLY SUPPORTED WITH SAID MAJOR AXIS OR PLAN OF SYMMETRY EXTENDING DOWNWARDLY AND DISPOSED IN A SUBSTANTIALLY VERTICAL ATTITUDE, WITHOUT SUPPORT OF THE GLASS AGAINST DEFORMATION, THE GLASS BEING SUFFICIENT FLUID SO THAT CRYSTALLISATION TAKES PLACE WITH STRESS RELIEF.