Patent ID: 8925735
Filing Date: 2015-01-06
Classification: B01D,B07B

Abstract:
1. An apparatus comprising: a frame having a perimeter defining an interior area; a first plurality of plastic ribs extending between opposing regions of the perimeter of the frame, the first plurality of plastic ribs having an upper face and a lower face; a metal rib extending between opposing regions of the perimeter of the frame within the interior area of the frame perpendicular to the first plurality of plastic ribs and extending from the upper face to the lower face of the first plurality of plastic ribs; wherein the metal rib has a first side and a second side; wherein the second side is located in a position opposite the first side; and a first plurality of support rods embedded into the first plurality of plastic ribs; wherein the first plurality of support rods are attached to the metal rib and embedded into the first plurality of plastic ribs.