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:
Sep. 06, 1983
Filed:
Sep. 15, 1980
Applicant:
Inventors:
Theodore C Carnavos, Bethel, CT (US);
Walter J Golymbieski, Woodbury, CT (US);
Assignee:
Noranda Mines Limited, Toronto, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28F / ;
U.S. Cl.
CPC ...
165 70 ; 165133 ; 165179 ; 138 38 ; 138121 ; 138172 ;
Abstract
A heat transfer device having an augmented surface is disclosed. The device comprises a base wall of heat conductive material having a plurality of pyramid-fins formed integrally with the surface of the base wall. The pyramid-fins are regularly spaced apart in the range of about 80-500 pyramid-fins per square inch and have a height in the range of 0.015 to 0.040 inch. The base wall is preferably a cylindrical tube and the pyramid-fins are formed as a knurled diamond pattern around the outside periphery of the tube.