Device and method to produce helical coils from a filament

Details Device and method to produce helical coils from a filament Device and method to produce helical coils from a filament

2005-04-29

2009-02-24

Hug, Eric (Department: 1791)

Winding, tensioning, or guiding

Helical or random winding of material

C242S570000, C242S600000, C425S110000, C425S112000

Reexamination Certificate

active

07494084

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.

REFERENCES:
patent: 329748 (1958-06-01), None
patent: 1 254 854 AS (1967-11-01), None
patent: 1 944 371 (1972-01-01), None

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