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:
Dec. 15, 1992
Filed:
Jul. 18, 1989
Applicant:
Inventors:
Kaoru Kato, Otsu, JP;
Hachiro Koma, Kusatsu, JP;
Assignee:
Matsushita Refrigeration Company, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
165151 ; 165182 ;
Abstract
A fin-tube type heat exchanger includes a large number of plate fins arranged in parallel to each other at predetermined intervals for allowing an air stream to flow between them, and heat exchanging tubes having an outer diameter Do and extending through the plate fins in a direction at right angles thereto. The heat exchanging tubes are set in rows spaced apart by a pitch L.sub.1 in a direction parallel to an air stream as represented by