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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.:

US 6295854 B1

PDFFull Text
Date of Patent:
Oct. 02, 2001

Filed:

Apr. 19, 2000

Device and method for moulding a grooved structure into a tubular workpiece

Applicant:
Inventors:

Bernd Stein, Bonn, DE;

Karl-Heinz Putz, Cologne, DE;

Heinz Steinhauer, Troisdorf, DE;

Wilhelm Zimmermann, St. Augustin, DE;

Assignee:

Dynamit Nobel GmbH Explosivstoff-und Systemtechnik, Troisdorf, DE;

Attorney:

Antonelli, Terry, Stout & Kraus, LLP

Primary Examiner:

Ed Tolan

Int. Cl.
CPC ...
B21B 1/908 ;
U.S. Cl.
CPC ...
B21B 1/908 ;
Abstract

According to the invention, a press roller device (,) for molding a grooved structure inside a tubular workpiece (,) has several press rollers (,), said press rollers rotating around a form tool (,) and being staggered axially in relation to one another. At least two of the press rollers (,) are driven in opposite directions to each other. This arrangement prevents the workpiece from twisting to a large extent.

Find Patent Forward Citations

Stein, Bernd. (2001). Device and method for moulding a grooved structure into a tubular workpiece (U.S. Patent No. 6295854). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6295854

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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