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US 8,443,984 B2Granted
Method and apparatus for screening
AssigneeDerrick Corporation
InventorsKeith Wojciechowski, Christian Newman
Life of this patent
Estimating the term…
Abstract
A screening machine includes wall members, screen assembly guide members, a screen assembly and a compression assembly. The screen assembly includes a frame with a plurality of side members and a screen supported by the frame. The compression assembly is attached to at least one wall member and forms the screen assembly into a concave shape.
Claims8
A vibratory screen machine, comprising:
- a wall member;
- a guide assembly attached to the wall member and having at least one mating surface;
- a concave support surface;
- a central member;
- a screen assembly including a frame having a plurality of side members and a screen supported by the frame, the screen including a semi rigid support plate and a woven mesh material on a surface of the support plate, a portion of the screen assembly forming a screen assembly mating surface configured to mate with the at least one mating surface of the guide assembly;
- a compression assembly attached to an exterior surface of the wall member, the compression assembly including a retractable member that advances and contracts;
- and
- an acceleration arrangement configured to impart an acceleration to the screen assembly,
- wherein as the retractable member advances it pushes the frame against the central member forming the screen assembly into a concave shape against the concave mating surface, the top surface of the screen assembly forming a concave screening surface.
6 more elements
A vibratory screen machine, comprising:
- a wall member;
- a guide assembly attached to the wall member and having at least one mating surface;
- a screen assembly having a frame, a screening surface and a screen assembly mating surface configured to mate with the at least one mating surface of the guide assembly;
- and
- a compression assembly attached to the wall member and having a retractable member,
- wherein the at least one mating surface of the guide assembly interfaces with the screen assembly mating surface thereby positioning the screen assembly on the vibratory screening machine while the screen assembly is in an undeformed state, wherein the screen assembly is located into a position by the guide assembly on the vibratory screening machine such that a portion of the frame is positioned to interface with the retractable member, wherein the retractable member contacts the frame and deforms the screen assembly into a concave shape, the screening surface forming a concave shape.
3 more elements
Dependencies are inferred from the claim text.