Liquefied gas container

Claim 1

A LIGHT WEIGHT PORTABLE CONTAINER FOR STORING LIQUEFIED GAS HAVING A BOILING POINT BELOW 233*K., COMPRISING AN INNER VESSEL FOR HOLDING A BODY OF SAID LIQUEFIED GAS; AN OUTER SHELL ENCLOSING AND SPACED FROM SAID VESSEL DEFINING AN INSULATING SPACE THEREBETWEEN SEPARATING SAID INNER VESSEL FROM THE ATMOSPHERE, SAID OUTER SHELL BEING SELECTED FROM MATERIALS OF THE GROUP CONSISTING OF ALUMINUM AND ALUMINUM ALLOYS; SAID SPACE BEING UNDER A VACUUM PRESSURE AND CONTAINING AN OPACIFIED INSULATING JACKET COMPRISING A MULTIPLICITY OF LOW HEAT CONDUCTIVERADIATION PERVIOUS FIBROUS MATERIAL LAYERS HAVING FIBER DIAMETERS LESS THAN 50 MICRONS AND A MULTIPLICITY OF RADIATION-REFLECTIVE METAL FOILS OF LESS THAN 0.2 MM. THICKNESS SUPPORTABLY CARRIED BY AND ARRANGED IN ALTERNATING SEQUENCE WITH SAID FIBROUS MATERIAL, SAID METAL FOILS BEING DISPOSED IN PARALLEL SPACED RELATION TO EACH OTHER AND SAID FIBROUS MATERIAL HAVING A FIBER ORIENTATION SUBSTANTIALLY PARALLEL TO THE FOILS AND SUBSTANTIALLY PERPENDICULAR TO THE DIRECTION OF HEAT FLOW ACROSS THE INSULATING SPACE; AND GAS ADSORBENT MATERIAL COMMUNICATING WITH THE OPACIFIED INSULATION TO MAINTAIN THE SPACE UNDER A VACUUM.