Patent ID: 7389882

Claim:
A self-cleaning screen assembly for a vibratory separator comprising: a peripheral frame around an opening, wherein the frame has a top mounting surface and a bottom mounting surface; at least one screen cloth affixed to the top mounting surface over the opening, wherein the screen cloth has a screen top surface and a screen bottom surface; a flow through support screen affixed to the bottom mounting surface across the opening; at least one cleaning element between the support screen and the screen cloth; and wherein the peripheral frame comprises: a rigid support section made from a polymer material having a first durometer to which the screen cloth and support screen are each affixed; and a cushioned top strain relief zone made from a polymer material having a lower durometer than the first durometer and located between the rigid support section and the opening adjacent to the top mounting surface such that the screen bottom surface is supported by the strain relief zone; a cushioned bottom strain relief zone made from a polymer material and having a lower durometer than the first durometer and located between the rigid support section and the opening adjacent to the bottom mounting surface.