Method for producing a coupling on a pipe and device for producing said coupling
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United States of America Patent
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Aug 10, 2010
Grant Date -
Nov 8, 2007
app pub date -
Sep 22, 2004
filing date -
Nov 28, 2003
priority date (Note) -
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Abstract
In a method for producing a coupling on a pipe, preferably consisting of copper or steel or Cu—, Ni—, Fe— alloys, by way of a preferably graduated or one-stage expansion of the pipe end to create a much larger difference in diameter, an expansion tool is introduced axially into the end of the pipe. Once the expansion tool has been introduced into the pipe end, the region of the pipe end that is to be or has been expanded is completely or partially compressed, by a force acting axially on the pipe end, so that the external diameter of the pipe end that is to be processed is delimited by one or more shaping jaws that completely or partially surround the pipe end. The invention also relates to a device for producing a coupling on a pipe end according to the method.
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