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:
Jul. 17, 1990
Filed:
Apr. 26, 1989
Applicant:
Inventors:
Jerome E Toth, Hatboro, PA (US);
Donald M Ernst, Leola, PA (US);
Assignee:
Thermacore, Inc., Lancaster, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
165 47 ; 165 61 ; 16510426 ; 219399 ; 219401 ; 219530 ;
Abstract
A heat pipe which maintains a controlled temperature gradient over its length. An annular heat pipe is constructed to have a core area which is a working furnace and to have the heat input at one end and a heat sink at the other end of the annular structure. The core is surrounded by an annular vapor space with a restricted cross section. The reduced vapor space creates a temperature gradient over the length of the furnace, and this gradient is variable and controllable depending upon the quantity of heat being transferred from the heat source to the heat sink.