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US 11,583,897 B2Granted
Tension screened assembly
AssigneeDerrick Corporation
InventorJames R. Colgrove
Life of this patent
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AssigneeDerrick Corporation
InventorJames R. Colgrove
Estimating the term…
A disclosed screen assembly includes a frame and a tensioned molded polyurethane screen attached to the frame. The frame has a perimeter that is a circle, square, rectangle, triangle, pentagon, hexagon, or other multi-sided polygon, and the screen may have similarly shaped apertures. The frame includes a support grid structure bounded by the perimeter and the screen may either be attached only to the perimeter of the frame, or may be attached to the perimeter of the frame and to one or more locations of the support grid structure. The screen may include uniaxial or biaxial reinforcement members that are integrally molded with the screen, and the tensioned screen may include tension along a direction that is parallel to, or perpendicular to, a direction of the reinforcement members. A disclosed method includes applying tension to a molded polyurethane screen and attaching the tensioned molded polyurethane screen to the frame.
A replaceable screen assembly for an attrition screening apparatus, comprising:
A method of generating a screen assembly, the method comprising:
A method of screening a material, the method comprising:
Dependencies are inferred from the claim text.