Device for producing a circularly cylindrical body

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United States of America Patent

PATENT NO 9044797
APP PUB NO 20150027188A1
SERIAL NO

14471318

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Abstract

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A method is for producing a circular cylindrical body (10) comprising a workable mass, having at least one helical internal cavity extending in the interior of the body. The body (10) 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 (10) that has been cut to length is then subjected to a rolling process by means of a friction surface arrangement (23) while being supported over the entire length thereof on a support means (16). The rolling process takes place in multiple steps, wherein a rolling movement using a first axis of rotation (25) is performed in a first step, and a rolling movement using a second axis of rotation (26) that is different from the first axis of rotation is used in a second step. There is also an apparatus for performing the method.

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Patent Owner(s)

Patent OwnerAddress
ARNO FRIEDRICHS HARTMETALL GMBH & CO KGBURGKUNSTADTER STR 7 MAINLEUS 95336

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Friedrichs, Arno Kulmbach, DE 25 228

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