Patent ID: 9242249
Filing Date: 2016-01-26
CPC Classification: B03C

Claim Text:
1. A screen comprising: a base; a plurality of magnetic bars mounted on the base so as to be supported by the base, the magnetic bars being generally parallel and transversely spaced so as to provide an aperture between each adjacent pair of magnetic bars, each aperture having a size with a width that extends between adjacent pair of magnetic bars; and the magnetic bars being arranged in a first set and a second set, with at least one of the first and second sets having at least two of the magnetic bars, each of the magnetic bars being independently movable relative to the base in a direction generally transverse of the magnetic bars to adjust the aperture size by altering said width, the base including a plurality of slots respectively corresponding with the magnetic bars, the slots allowing for movement of the magnetic bars relative to the base.