公开(公告)号：US11708648B2

公开(公告)日：2023-07-25

申请号：US17308124

申请日：2021-05-05

Applicant: COLUMBIA INSURANCE COMPANY

Inventor： Adam Tankersley ,  Jesse Guzowski

IPC: D02J1/08 ,  D02G1/16 ,  D01D5/00 ,  B65H51/16

CPC classification number: D01D5/00 ,  B65H51/16 ,  D02G1/16 ,  D02J1/08

Abstract: An aspirator provides linear control over air flow for manipulation of extruded fibers. A distribution manifold has a barrel valve between first and second flow channels, enabling precise, linear control over air flowing from a charge conduit to a pressure chamber surrounding a discharge pipe. Plural orifices in the discharge pipe connect the pressure chamber to the interior thereof, which is configured as a Venturi tube. Discharge pipe surfaces that can contact filaments therein are of hardened material while non-contact surfaces are of lighter materials.