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:
May. 09, 1989
Filed:
Mar. 30, 1988
Applicant:
Inventors:
Karlhans Staat, Ratingen, DE;
Hermann Moltner, Grevenbroich, DE;
Assignee:
Kocks Technik GmbH & Co., Hilden, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B21B / ;
U.S. Cl.
CPC ...
72 96 ;
Abstract
A method and apparatus for transverse, preferably skew, rolling seamless tube blanks, is provided wherein said seamless tube blanks are rolled down by a mandrel rod lying in their longitudinal bore or are rolled onto a mandrel rod at the delivery end. During transverse rolling each tube blank is subjected to a predetermined, controllable torque exerted by the mandrel rod in order to eliminate substantially the formation of pockets in the region of the sizing pass during transverse rolling.