Patent ID: 8141738

Claim:
An insulating system for a cryogenic tank comprising blocks of insulating materials disposed, at a low temperature, in a substantially abutting manner on one face of a structure of said tank, the blocks being disposed between said face of the structure and a deformable impervious wall, the deformable and impervious wall delimiting at least part of the volume where the cryogenic fluid is stored and being actuated towards the face of the structure, characterized in that a first part of the blocks is, at ambient temperature, in contact with the face of the structure and away from the deformable impervious wall, a second part of the blocks being, at ambient temperature, in contact with the deformable impervious wall and away from the face of the structure, the edges of the blocks of the first part and those of the second part being, at ambient temperature, in partial contact and having complementary shapes so as to form a substantially continuous layer of insulating material at a low temperature, wherein the first part of the blocks of insulating materials has edges shaped in a bevel at an angle α, the second part of the blocks of insulating materials has edges shaped in a bevel at an angle β, where α is greater than β.