Containers for liquefied gases

Claim 1

A container for the bulk storage or transport of liquids at temperatures greatly different from ambient temperatures comprising b. a tank of liquid-impervious material, c. an external jacket of thermal insulating material surrounding said tank, certain areas of said tank being subjected to much higher load stress under working conditions than other insulated areas, d. the insulation at the highly stressed areas of the tank being of load-bearing insulating material of relatively high strength, e. the insulation at the remaining insulated areas of the tank being of rigid foamed-plastic material of very low load-bearing strength, f. said tank being prismatic, the foamed-plastic insulation and the load-bearing insulation being joined at lines of junction to form a complete insulating jacket around said tank, said lines of junction being spaced from the Lines of the corners of said tank formed by the meeting of adjacent sides with the bottom wall of the tank, in which the junction between the foamed-plastic insulation and the load-bearing insulation lies in a plane extending obliquely to the plane of the wall of the tank.