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:
Jun. 02, 2015
Filed:
Aug. 28, 2014
Arno Friedrichs, Kulmbach, DE;
Arno Friedrichs, Kulmbach, DE;
Other;
Abstract
A method is for producing a circular cylindrical body () comprising a workable mass, having at least one helical internal cavity extending in the interior of the body. The body () is initially produced with a straight internal recess, for example by means of extrusion. Afterwards the body is cut to a defined length. The body () that has been cut to length is then subjected to a rolling process by means of a friction surface arrangement () while being supported over the entire length thereof on a support means (). The rolling process takes place in multiple steps, wherein a rolling movement using a first axis of rotation () is performed in a first step, and a rolling movement using a second axis of rotation () that is different from the first axis of rotation is used in a second step. There is also an apparatus for performing the method.