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:
Apr. 28, 1987
Filed:
Aug. 19, 1985
Applicant:
Inventor:
Elmer H Rogers, Jr, Murrysville, PA (US);
Assignee:
Aluminum Company of America, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
291574 ; 29446 ; 29464 ;
Abstract
A method is disclosed of assembling a tube into two non-parallel tube sheets. The tube ends are placed in mandrels. The mandrels are moved into the holes in the tube sheets by bending the tube. The tubes are provided with convex concave curvature to provide the necessary flexibility to aid assembly.