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. 25, 2020
Filed:
Feb. 06, 2020
Peter Gaal, Boulder, CO (US);
Peter Gaal, Boulder, CO (US);
ARRIGO ENTERPRISES, LLC, Boulder, CO (US);
Abstract
The invention relates to equipment for measuring the thermal conductivity of solid materials in the −50 C to 350 C temperature range, using an improved form of the Guarded Heat Flow Meter Method. The unknown material specimen is subjected to the temperature gradient which is induced by electrically heating from one end and cooling the other end. In intimated contact with the unknown on either ends are pieces of a well characterized material which are clamped together by an electromechanical actuator via a calibrated compression spring, with the extent of the compression indicated by a linear displacement transducer. The heat sink is formed with an internal cavity into which liquid carbon dioxide is injected through a capillary in a controlled fashion. This allows operating the heat sink in the entire temperature range without interruptions and the need for thermal spacers.