Patent ID: 7478728
Filing Date: 2009-01-20
Classification: B01D,B07B

Abstract:
1. A screen system suitable for use in a vibratory screen apparatus provided with screen system support runners, said screen system comprising: a screen element consisting essentially of a mesh panel provided with first and second elongate support members extending along opposite end portions of said mesh panel; and a support frame for said screen element, said support frame having spaced apart first and second elongate frame elements for engagement with said screen element support members in use of the screen system, and farther elongate frame elements extending between said first and second frame elements for supporting said mesh panel of said screen element; said support frame being provided with at least one mesh panel support provided with an elevating support surface underneath said mesh panel in a position corresponding to an untensioned condition thereof, and formed and arranged so that elevation of said elevating support surface so as to displace said mesh panel above said position, tensions said screen element across said support surface and between said screen element support members, said screen element support members and said first and second frame elements being formed and arranged for secure interengagement in use of the screen system with at least one of said screen element support members and the respective one of said first and second frame elements being formed and arranged so that when said screen element is tensioned by said mesh panel support with said support surface thereof elevated, in use of the screen system, said mesh panel is securely held under tension and said screen element support members driven into securely gripped interengagement with said first and second frame elements, and wherein the screen element support members and respective one of the first and second frame elements, and said screen system support runners, are formed and arranged so that when the mesh panel is tensioned by the elevating surface of the mesh panel support, the screen element support members are driven into interengagement with both the respective one of the first and second frame elements and the screen system support runners, whereby the secure interengagement of the screen element support members and frame elements is dependent upon and achieved simultaneously with, the securing of the screen system in the apparatus on said runners.