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:
Jul. 15, 1980
Filed:
Jan. 15, 1979
Applicant:
Inventor:
Erich Bretschneider, Meerbusch, DE;
Assignee:
Schloemann-Siemag Aktiengesellschaft, Dusseldorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21B / ; B21B / ; B21B / ;
U.S. Cl.
CPC ...
72 97 ; 72234 ; 72250 ;
Abstract
Rolling mill for forming seamless pipes from round billets, comprising a rotary piercing mill or a punch press for shaping billets into hollow blocks, a cross conveyor leading to a planetary rolling mill for the rolling of the hollow blocks on a mandrel into seamless pipe, followed by stretch-reducing rolling mill for rolling the seamless pipes into a finished product.