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:
Sep. 19, 1978
Filed:
Jan. 27, 1976
Applicant:
Inventor:
Edwin R Monkelbaan, Williamson, NY (US);
Assignee:
Xerox Corporation, Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
B21D / ;
U.S. Cl.
CPC ...
72122 ; 72 78 ;
Abstract
A method of fabricating seamless tubes of malleable metal is provided comprising supporting an annular work piece of greater wall thickness than the required thickness of the completed tube within a die ring in encircling engagement with its outer surface and applying an axial pull to one end of said work piece to draw it axially through said die ring while simultaneously rolling the interior of the work piece with a forming tool having a plurality of centrifugally loaded rollers so as to enlarge the internal diameter and lengthen the work piece axially in the direction of said axial pull.