Device and method for moulding a grooved structure into a tubular workpiece
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Oct 2, 2001
Grant Date -
N/A
app pub date -
Apr 19, 2000
filing date -
Jul 19, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
According to the invention, a press roller device (1) for molding a grooved structure inside a tubular workpiece (7) has several press rollers (4,5,6), said press rollers rotating around a form tool (2) and being staggered axially in relation to one another. At least two of the press rollers (4,5) are driven in opposite directions to each other. This arrangement prevents the workpiece from twisting to a large extent.
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Cited Art Landscape
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