Method for producing a hollow valve for internal combustion engines

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United States of America Patent

PATENT NO 11813658
SERIAL NO

17437762

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Abstract

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A method for producing a valve body of a hollow valve includes providing a workpiece blank or semi-finished product, spin extruding the workpiece to produce a preform having a cup with a hollow shape formed by the cup wall. A hollow valve produced by this method is also provided.

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Patent Owner(s)

Patent OwnerAddress
FEDERAL-MOGUL VALVETRAIN GMBH30890 BARSINGHAUSEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Knust, Johannes Hannover, DE 2 1
Matthias, Thorsten Garbsen, DE 13 10
Wolking, Antonius Barsinghausen, DE 17 13

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