US PATENT SUBCLASS 57 / 411
.~.~.~.~ With fluid flow controlling or directing

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}
408  DF  .~.~.~ With fiber separating and/or feeding {5}
411.~.~.~.~ With fluid flow controlling or directing

DEFINITION

Classification: 57/411

With fluid flow controlling or directing:

(under subclass 408) Subject matter wherein the fiber separating and/or feeding means utilizes a current of fluid and includes means for directing or controlling the current of fluid or for providing an additional or supplemental fluid flow in the separating and/or feeding zones other than for or in addition to the purpose of merely transporting the discrete fibers to the rotating chamber.

(1) Note. The fluid flow referred to herein is other than the conventional fluid flow which exists in open-end systems as a result of the use of an under pressure to assist in transporting the fibers to the rotating chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

301+, and 304+, for the use of pneumatic systems in clearing twisting devices.