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. 18, 1981
Filed:
Sep. 19, 1979
Applicant:
Inventors:
Sebastian J Gianni, Wethersfield, CT (US);
William M Seeley, Brewster, NY (US);
Assignee:
Dunham-Bush, Inc., West Hartford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
F28F / ; F28D / ;
U.S. Cl.
CPC ...
165133 ; 62527 ; 165156 ;
Abstract
A heat exchanger formed by concentric, spaced tubes defining a substantially annular chamber therebetween. There is an internal metallic fin comprising a strip of corrugated sheet metal extending spirally within the annular chamber with the adjacent turns of the spirally formed strip being spaced from each other to provide a spiral passageway between the side edges of adjacent turns. The metallic fin corrugated sheet metal strip bears a plurality of small apertures to significantly improve the boiling heat transfer coefficient.