Liquid cryogen freezer
US6393847B1 · kind B1 · utility
13Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2001 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Jan 12, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF17C2270/0509
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved liquid cryogen dewar for storing cryobiological materials is disclosed having an inner tank with a reservoir holding a pool of liquid cryogen. A rotatable tray is contained within the inner tank, containing a platform, vertical dividers and a thermally conductive cylindrical outer sleeve, which contains a skirt extending into the pool of liquid cryogen. The sleeve transfers entering heat away from the cryobiological materials and into the liquid cryogen pool. The sleeve maintains a consistently low temperature throughout the vertically disposed shelves of the cryobiological materials contained within the inner tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.