Patent ID: 7340921

Claim:
A cold box apparatus comprising: (a) a cryogenic assembly comprising: (1) a main cryogenic element, and (2) an auxiliary element having a first part and a second part, wherein said first part is connected to said main cryogenic element, (b) an outer jacket comprising: (1) an outer wall, (2) an inner wall, and (3) a first space between said inner wall and said outer wall, wherein said outer jacket surrounds at least some of said main cryogenic element, and wherein there is a second space between said outer jacket and said main cryogenic element, (c) a base, and (d) a housing comprising an inner space, wherein said housing extends at least partially outside said outer jacket, and wherein said second part of said auxiliary element extends at least partially into said inner space of said housing wherein said auxiliary element is insulated from said main cryogenic element by a barrier, and wherein said barrier forms a weak seal between said inner space of said housing and said second space, such that in the case of over pressure within said inner space, said barrier breaks.