Patent ID: 11933457
Assignee: MVE BIOLOGICAL SOLUTIONS US, LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 16:
17. A method of assembly of a dewar for storing a cryogenic fluid, the method comprising:
coupling an inner upper jacket with an inner lower jacket such that an inner vessel is formed, the inner vessel configured to store a biological material;
coupling a one-piece neck tube with the inner upper jacket;
positioning the inner vessel within an outer lower jacket;
coupling the one-piece neck tube with an outer upper jacket;
coupling the outer upper jacket with the outer lower jacket such that an outer vessel is formed, the outer vessel configured to contain the inner vessel, wherein the inner vessel and the outer vessel are coupled only by the one-piece neck tube,
coupling a first portion of the one-piece neck tube with the outer upper jacket, the first portion having a first outer diameter;
coupling a second portion of the one-piece neck tube with the inner vessel such that the second portion extends into the inner vessel, the second portion having a second outer diameter, the second portion integrally formed with the first portion as one-piece;
sealing the one-piece neck tube with the outer upper jacket at a first sealing section disposed on a first end of the first portion; and
sealing the one-piece neck tube with the inner upper jacket at a second sealing section disposed on a second end of the first portion opposite the first end, the second end corresponding with a first end of the second portion, the second sealing section having a fourth outer diameter that is larger than the first outer diameter.