US PATENT SUBCLASS 57 / 417
.~.~.~.~ With specific yarn guiding device

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

1 R  DF  APPARATUS AND PROCESSES {45}
400  DF  .~ Open end spinning {4}
404  DF  .~.~ Rotating chamber type {4}
414  DF  .~.~.~ Rotor with fiber accreting portion {3}
417.~.~.~.~ With specific yarn guiding device

DEFINITION

Classification: 57/417

With specific yarn guiding device:

(under subclass 414) Subject matter including structural details of a guide device for directing the twisted strand passing out of the rotor.

(1) Note. To be placed in this subclass, the guide device should include sufficient structural details to provide more than a nominal recitation thereof.

(2) Note. Tube elements are commonly used as the guide in these devices and are frequently referred to as "withdrawal tubes".

SEE OR SEARCH THIS CLASS, SUBCLASS:

352+, for strand guiding in spinning or twisting machines.

SEE OR SEARCH CLASS

242, Winding, Tensioning, or Guiding, 157+, for yarn guides, per se.

CROSS-REFERENCE ART COLLECTIONS

The following subclasses are collections of published disclosures pertaining to various specified aspects of the twisted strand structure art which aspects do not form appropriate bases for subclasses in the foregoing classification wherein original copies of patents are placed on the basis of the structure or composition of a strand. These subclasses assist a search based on remote function or physical characteristic of the twisted strand structure and may be of further assistance to the searcher, either as a starting point in searching this class or as an indication of further related fields of search inside or outside the class.

(1) Note. Disclosures are placed in these subclasses for their value as references and as leads to appropriate main or secondary fields of search without regard to their original classification or their claimed subject matter.

(2) Note. The disclosures found in the following subclasses are examples only of the indicated subject matter, and in no instance do they represent the entire extent of the prior art.