US PATENT SUBCLASS 57 / 328
.~.~ False twist type

Current as of: June, 1999
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57 /   HD   TEXTILES: SPINNING, TWISTING, AND TWINING

1 R  DF  APPARATUS AND PROCESSES {45}
315  DF  .~ With drafting {5}
328.~.~ False twist type {3}
329  DF  .~.~.~> Interstage
330  DF  .~.~.~> With self-contained drawing means
331  DF  .~.~.~> Friction type

DEFINITION

Classification: 57/328

False twist type:

(under subclass 315) Subject matter in which at least one of the twisting operations includes imparting only a false twist to the strand material being drafted.

(1) Note. A false twist is one that is counterbalanced by a simultaneously produced, equal and opposite twist, as set forth in the definition of subclass 332.

SEE OR SEARCH THIS CLASS, SUBCLASS:

318, for false twist devices combined with means to produce a variable drafting effect.

332+, for false twisters, per se.