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:
Jan. 01, 1985
Filed:
Oct. 19, 1982
Michael J Christmas, Worcester Park, GB;
Planer Products Limited, Sunbury-On-Thames, GB;
Abstract
For the controlled cooling of specimens which are at least partially of liquid form, especially biological specimens, it is important that crystallization at the freezing point takes place locally, without supercooling, and preferably with absorption of the latent heat of fusion. A cooling device which comprises at least one module which operates in accordance with the Peltier effect, with the 'cold' faces of the modules connected by a conductive metal strip, has the specimen container in contact with the strip. The device is mounted in a working chamber which has its temperature/time profile controlled. At a temperature which is a predetermined amount above a given critical temperature for the specimen, e.g. its freezing point, the Peltier effect modules are energized to effect supplementary cooling at a local area, for example one end of the specimen.