Patent ID: 8293017

Claim:
An apparatus comprising: a workpiece; a source positioned spaced apart from said workpiece support and configured to emit a plume of coating material toward a workpiece support to coat said workpiece; said workpiece support including a workpiece support member configured to hold the workpiece, and a support part configured to rotatably support said workpiece support member for rotation about an axis that extends approximately parallel to a direction of flow of said plume away from said source; and a perforated shield formed of an elongate strip of mesh material that extends approximately normal to a direction of flow of said plume away from said source, said elongate strip of mesh material having an approximately rectangular shape and defining a plurality of openings that extend therethrough, said shield being supported by said workpiece support and positioned between said workpiece support member and said source, said shield having a length that is greater than a diameter of the workpiece and a width that is less than the diameter of the workpiece, said shield being positioned with respect to said source and configured to partially block a first portion of said plume from reaching said workpiece such that some of said first portion passes through said plurality of openings to reach said workpiece and a remainder of said first portion is blocked by said shield, and such that a second portion of said plume is free of influence by said shield; wherein said support part is configured rotatably support said workpiece support member for rotation with respect to said shield about said axis, wherein said elongate strip of mesh material has a recess in a length side thereof.