Patent ID: 6786484
Filing Date: 2004-09-07
Classification: B65H

Abstract:
A sheet inverter comprising:a sheet conveyor having spaced belts adapted to support at least one flexible sheet of material; means for moving said spaced belts in a sheet transport direction; a finger shaft supported for rotation above, and transverse to said spaced belts; a plurality of sheet inverter fingers each having a first end portion secured to said finger shaft, and a second ends portion interdigitating with said spaced belts, said plurality of sheet inverter fingers being spaced along said finger shaft; an upper face, a distal end and an undersurface on each of said sheet inverter finger second end portions; a friction increasing surfaces on said at least upper face of said second end of said sheet inverter finger, said friction increasing surface being adapted to increase a frictional force between said upper face and a lower face of said at least one flexible sheet of material in said sheet transport direction; and means for rotating said finger shaft to elevate and declinate said second end portion of each of said sheet inverter fingers, said friction increasing surface engaging said lower face of said at least one flexible sheet of material during said elevation of said second end portion of each of said sheet inverter fingers in response to said rotation of said finger shaft.