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:
Feb. 01, 1977
Filed:
Mar. 14, 1975
Applicant:
Inventors:
Robert D MacDonald, Grand Blanc, MI (US);
Robert K Rose, Burnt Hills, NY (US);
Assignee:
Champion Home Builders Co., Dryden, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D / ;
U.S. Cl.
CPC ...
165151 ; 165181 ;
Abstract
Annular fins for a heat exchanger are fabricated in circumferential segments, arranged end to end, with each segment having inner and outer edges of identical but radially spaced contour, so that such segments can be stamped from a blank without any scrap created between the common edges of adjacent segments.