US PATENT SUBCLASS 57 / 206
.~ Longitudinal variation
Current as of:
June, 1999
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57 /
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TEXTILES: SPINNING, TWISTING, AND TWINING
200
DF
STRAND STRUCTURE
{11}
206
.~ Longitudinal variation {3}
207
DF
.~.~
> Covered or wrapped type
208
DF
.~.~
> Crimped or bulked type
209
DF
.~.~
> Slub type
DEFINITION
Classification: 57/206
Longitudinal variation:
(under subclass 200) Subject matter wherein the diameter of the strand is nonuniform along the longitudinal axis of the strand.
(1) Note. These strands are commonly known as novelty yarns,
effect yarns, thick and thin yarns, slub yarns, etc., and are deliberately produced for a special effect.
SEE OR SEARCH THIS CLASS, SUBCLASS:
91, for feeding strands to a twisting operation at a variable rate.
317, for producing longitudinal variations in strands by means of a variable drafting operation combined with a twisting operation.
SEE OR SEARCH CLASS
19, Textiles: Fiber Preparation, 237+, for drafting at longitudinally varying rates.
28, Textiles: Manufacturing,
243, for producing variable denier in strands in a stretching operation.
264, Plastic and Nonmetallic Article Shaping or Treating: Processes,
167, for imparting longitudinal irregularities to filaments during extrusion.
428, Stock Material or Miscellaneous Articles,
399, for fibers and filaments with longitudinal varying cross sections.
