Patent ID: 6322001
Filing Date: 2001-11-27
Classification: B65H,D01G,Y02W

Abstract:
An ejection nozzle for transport of fiber thread pieces by compressed air, the ejection nozzle comprising:a flow duct comprised of a series of damper units, each damper unit including a first tube on the inlet side of the damper unit and having a larger cross section, a second tube on the outside of the damper unit and having a smaller cross section, and a damper unit body between the first and second tubes, the body having a tapering cross section in the flow duct such that each damper unit has a greater cross section for air flow from the inlet side upstream and a smaller cross section for air flow from the outlet side and toward downstream;the damper units being arranged in series with the second tube of each unit extending into the first tube of the adjacent unit downstream, the second tubes being so supported and positioned on the respective ones of the first tubes as to permit airflow to exit the duct as the junction between one of the second tubes and the respective one of the first tubes into which the second tube extends, and to permit the air to flow upstream out of the duct past the then upstream damper unit.