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

Claim 0:
1. A dewar for storing a cryogenic fluid comprising:
an inner vessel configured to store the cryogenic fluid;
an outer vessel including an outer upper jacket and an outer lower jacket, the outer upper jacket including a central region and a collar, the outer upper and lower jackets configured to be joined and define an interior chamber, the inner vessel being positioned within the interior chamber of the outer vessel so that an insulation space is defined between the inner and outer vessels, wherein the insulation space is at least partially evacuated of air; and
a one-piece neck tube extending between the inner vessel and the central region of the outer upper jacket, the one-piece neck tube comprising:
a first portion configured to couple with the outer upper jacket, the first portion having a first outer diameter; and
a second portion configured to couple 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,
wherein the one-piece neck tube comprises a first sealing section disposed on a first end of the first portion, the first sealing section having a third outer diameter that is larger than the first outer diameter such that the first sealing section is configured to seal the one-piece neck tube with the outer upper jacket.