US 7,389,882 B2 · Multi-hardness composite screen frame

Abstract

A self-cleaning screen assembly for a vibratory separator is disclosed. The self-cleaning screen assembly includes a peripheral frame having a top mounting surface to which at least one screen cloth is affixed and a bottom mounting surface to which a flow through support screen is affixed. One or more cleaning elements are freely located between the support screen and the screen cloth. The peripheral frame includes a rigid support section, a cushioned top strain relief zone, and a cushioned bottom strain relief zone. The top strain relief zone, the bottom strain relief zone and the rigid support section may be discrete components wherein the strain relief zones are formed by strain relief pads that are located adjacent to a rigid support member. The top strain relief zone provides cushioned support to the screen cloth around the edge of the screen frame adjacent to the opening. The bottom strain relief zone provides cushioning for the support screen.

Claims16

Dependent claims

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.

7 more elements

Dependencies are inferred from the claim text.

Multi-hardness composite screen frame

Life of this patent

Multi-hardness composite screen frame

Life of this patent

Abstract

Claims16