Patent ID: 7757882

Claim:
A cryogenic storage tank comprising: a fluid-tight cylindrical outer tank having a pair of end caps and a cylindrical central segment therebetween; a fluid-tight cylindrical inner tank located in the outer tank, the inner tank operable to store a fluid therein, the inner tank having axially opposite ends; a plurality of cords extending from the axially opposite first and second ends of the inner tank to the central segment of the outer tank, the cords suspending the inner tank within the outer tank in a spaced relation therefrom; a tensioning device coupled to said first end of the inner tank, a first group of the plurality of cords being coupled to the tensioning device, a second group of the plurality of cords being attached to a fixed member of the second end of the inner tank, and the tensioning device operable to adjust a tension in the plurality of cords; and a vacuum between said inner and outer tanks.