The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 2002
Filed:
Jan. 12, 2001
Applicant:
Inventors:
Jeffrey Brooks, Jasper, GA (US);
Keith Gustafson, Waleska, GA (US);
Assignee:
Chart Inc., Burnsville, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F25B 1/900 ;
U.S. Cl.
CPC ...
F25B 1/900 ;
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.