Apparatus useful in the production of low-permeability, high-density, carbon and graphite bodies

Claim 1

APPARATUS FOR THE PRODUCTION OF A HIGH DENSITY CARBONACEOUS BODY FROM A LESS DENSE CARBONACEOUS MASS CAPABLE OF SOFTENING AND EVOLVING VOLATILES WHEN HEATTREATED COMPRISING AN ENVELOPE FOR COMPLETELY ENCASING SAID MASS AND ENABLING THE SIMULTANEOUS APPLICATION OF GASEOUS AND MECHANICAL PRESSURES UPON SAID MASS, A FLUID PRESSURE SYSTEM FOR INDEPENDENTLY PROVIDING CONTROLLED GASEOUS PRESSURES INSIDE OF SAID EVELOPE AND A PRESSURE VESSEL IN WHICH SAID ENVELOPE IS ENCLOSED, SAID PRESSURE VESSEL PROVIDING CONTROLLED FLUID PRESSURES OUTSIDE OF SAID ENVELOPE, SAID ENVELOPE BEING ESSENTIALLY IMPERMEABLE TO THE FLUID PROVIDING SAID PRESSURE AND SUFFICIENTLY DEFORMABLE BY POSITIVE DIFFERENCES IN EXTERNAL FLUID PRESSURE WITH RESPECT TO INTERNAL FLUID PRESSURE, SO AS TO BE CAPABLE OF EFFICIENTLY CONVERTING POSITIVE DIFFERENCES IN PRESSURE TO ESSENTIALLY ISOSTATIC MECHANICAL PRESSURE AP-