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US 5,687,853 AGranted
Screen construction
AssigneeHunter Wire Products Limited
InventorTerry Ronald Askew
Life of this patent
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AssigneeHunter Wire Products Limited
InventorTerry Ronald Askew
Estimating the term…
A screening panel molded in one piece in plastics material has a plurality of surface members 11 running generally in the direction `A` and supported on transverse members 12. The surface members 11 define a substantially raised surface having a plurality of slots or gaps 13 of substantially constant dimension through which material to be screened will pass if it is below the screen size defined by the gaps 13. The surface members 11 project a significant distance above the transverse members 12 in order to provide a surface having substantially uninterrupted slots 13. The structure and material are designed to increase flexibility of the panel which assists in keeping the panel clear without any significant degradation of the sizing capability of the screen. The panel has three flexing modes which assist in clearing the panel, these being horizontal bending of the surface members 11 in the direction `B`, vertical bending of the members 11 in the direction `C`, and twisting of the members 11 about the longitudinal axis.
A screen panel for use in vibrating screening equipment, the panel comprising a plurality of screen surface members running in a first direction and a plurality of underlying supporting members running substantially transversely of and connected to each of the surface members to locate the surface members relative to one another and to provide structural strength, each surface member separated from its adjacent surface members by gaps having a dimension defining the discriminating size of the screen panel, and the surface members protruding above the transverse members to provide a plurality of open slots at the surface of the panel over a substantial part of its length, said screen panel being formed of a resilient plastics material and said surface members being constructed so as to be flexible.
A flexible screen panel for use in vibrating screening equipment, the panel comprising a plurality of resilient plastic screen surface members running in a first direction and a plurality of underlying resilient plastic support members running substantially transversely of and connected to each of the surface members to locate the surface members relative to one another and to provide structural strength, each surface member separated from its adjacent surface members by gaps having a dimension defining the discriminating size of the screen panel, and the surface members protruding above the transverse members to provide a plurality of open slots at the surface of the panel over a substantial part of its length, said resilient plastic screen surface members and underlying supporting members being flexible to provide a horizontal flexibility that is transverse to a direction of material movement on said flexible screen panel, a vertical flexibility, and a twisting flexibility of said surface members about an axis generally aligned with the direction of material movement.
Dependencies are inferred from the claim text.