Device and method to produce helical coils from a filament
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United States of America Patent
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Feb 24, 2009
Grant Date -
Nov 17, 2005
app pub date -
Apr 29, 2005
filing date -
Apr 30, 2004
priority date (Note) -
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Abstract
Presented are a device and a method to produce helical coils from a filament, preferably consisting of plastic. A rotatable winding spindle and an associated filament-shaping device are provided to wind up the filament in a helical pattern, whereby the winding spindle extends beyond the filament-shaping device in the feed direction of the filament to be wound up. Viewed in the feed direction of the filament to be wound onto the winding spindle, a pressing device is provided downstream of the filament-shaping device that presses the filament against the winding spindle and is designed to generate a predominantly adequate friction contact between the filament and the winding spindle so that the rotation of the winding spindle essentially takes along the filament into the winding direction.
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