Patent ID: 8657998
Filing Date: 2014-02-25
Classification: B08B,B65H

Abstract:
1. An apparatus for removing particulate-carrying air from a moving web, the moving web having a first side and a second side, the apparatus comprising: a. a plurality of NACA ducts disposed on said first and second sides of said moving web, wherein said plurality of said NACA ducts are disposed generally linearly across a width of said first and second sides and disposed generally linearly across the width of at least said first side of said web in a staggered, nested relationship; b. wherein at least one NACA duct is positioned in a non-contacting relationship on the first side of the moving web and at least partially submerged in a particulate-carrying boundary layer of the moving web; c. said at least one NACA duct having an intake opening and an exhaust opening such that when said intake opening is submerged in said boundary layer at least a portion of said particulate-carrying air from said boundary layer enters said intake opening and exits said exhaust opening, thereby scavenging particulate-carrying air from said boundary layer.