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:
Aug. 12, 1997
Filed:
Oct. 01, 1996
Herman Vogel, Newtown, CT (US);
Donald G Mackay, Roxbury, CT (US);
The Perkin-Elmer Corporation, Norwalk, CT (US);
Abstract
A thermally insulated calorimeter includes a vessel with a chamber containing liquid nitrogen. The vessel is formed of four walls arranged proximately in parallel, each pair of adjacent walls delimiting a space. An inner wall forms the chamber, two partition walls are between the inner wall and an outer wall which is exposed to atmosphere. Each space contains a gas at atmospheric pressure. Each spacing is selected to minimize heat transfer from the atmosphere to the inner chamber, by establishing a maximum spacing for which the air is stagnant. A cover for the vessel has a set of walls with spacings similar to those of the vessel. Sealing for such spacing is provided for a removable main cover and a removable top cover for the calorimeter sample block.