Method for reinforcing and calibrating a pipe portion

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10077567
APP PUB NO 20160024808A1
SERIAL NO

14873387

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Importance

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Abstract

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A method and a device for producing an outer pipe of a telescope-like support, for reasons of weight and stability, is produced from a standardized zinc-coated steel pipe having a large outer diameter and a small wall thickness. Also included is the telescope-like support and the outer pipe which is contained therein. A pipe portion of the outer pipe is expanded in the method with a punch and subsequently tapered to the original outer diameter again with a ring. A reinforcement of the pipe portion and a calibration of the outer diameter of the pipe portion are thereby achieved. An outer thread can be rolled on the pipe portion.

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Patent Owner(s)

Patent OwnerAddress
PERI GMBH89264 WEISSENHORN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Andree, Juergen Neu-Ulm, DE 3 3
Specht, Rudolf Neu-Ulm, DE 6 3

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