Patent ID: 6880719

Claim:
A tank assembly for holding a cryogenic liquid, comprising: an inner shell including a first shell body extending between first and second endwalls and a sleeve extending along a longitudinal axis between the first and second endwalls to form, with the first shell body and the first and second endwalls, a generally annular space for holding a cryogenic liquid; an outer shell including a second shell body extending between third and fourth endwalls, the outer shell being disposed about the inner shell to form a sealed space between the two shells which inhibits the transfer of heat from the outer shell to the inner shell; a support beam supported by and extending between the third and fourth endwalls and through the sleeve to provide support for the inner shell within the outer shell; a pair of raised formations on the support beam fitting closely within the sleeve for engaging the interior of the sleeve while minimizing heat transfer between the support beam and the sleeve, the raised formations being spaced form each other and from the ends of the support beam; and a pin extending transversely through the sleeve and through one of the raised formations for inhibiting turning of the two shells with respect to each other about the longitudinal axis.