Patent ID: 6544388
Filing Date: 2003-04-08
Classification: B31F,D21G

Abstract:
Apparatus for doctoring a moving surface, said apparatus comprising:a blade holder component extending longitudinally across said moving surface and carrying a doctor blade; a support component parallel to and supporting said blade holder component; first operating means for rotatably urging said doctor blade in one direction into contact with said moving surface, resulting in said doctor blade being acted upon by a reactionary thrust force in the plane of said doctor blade and a reactionary rotational force in a direction opposite to said one direction; guide rails defining parallel tracks on one of said components; rotatable rollers carried on and spaced along the length of the other of said components, each of said rollers being axially shiftable with respect to and in rolling contact and mechanical interengagement with a guide rail on a respective one but not the other of said tracks at a profiled interface, the profiled interfaces between said rollers and said guide rails being configured to accommodate reciprocal movement of said blade holder component relative to said support component, and to resist both said reactionary thrust force and said reactionary rotational force; and second operating means for reciprocally moving said blade holder component relative to said support component.