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:
Nov. 23, 1982
Filed:
May. 12, 1980
Applicant:
Inventor:
Herbert Muellejans, Stuttgart, DE;
Assignee:
Sueddeutsche Kuehlerfabrik julius fr. behr GmbH & Co. KG, Stuttgart, DE;
Primary Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
16510421 ; 165133 ; 2915 / ;
Abstract
An improved metallic heat transfer surface for heat transfer during change of phase of a medium in contact therewith and method of making. A smooth metallic surface is lightly etched to form evaporation and/or condensation nuclei. The nuclei are defined by peaks and valleys in the material, the peaks substantially extending to the envelope of the surface prior to etching and the vallyes extending into said material not more than 10.mu.(1.times.10.sup.-3 mm).