Patent ID: 7654394

Claim:
A screening or conveying apparatus comprising a base; a frame assembly comprised of a main support frame section mounted on the base; a plurality of mat supports spaced from each other and arranged transversely to a length of the frame assembly; a plurality of flexible mat sections, each mat section being comprised of plastic and having downwardly extending end sections, each mat section being supported between an adjacent pair of first and second mat supports, wherein an adjacent pair of first and second mat sections are supported by a common mat support, wherein the common mat support comprises a cross member extending substantially across a transverse width of the first and second mat sections, the first and second mat sections being connected to the cross member via a connection assembly, the connection assembly comprising a clamp bar assembly comprised of plastic and removably mounted to the cross member, the clamp bar assembly having (a) an upper section with first and second inwardly and upwardly extending arms for securing adjacent end sections of the first and second mat sections therebetween and (b) a lower section sitting astride the cross member, wherein an adjacent pair of first and second mat supports are movable relative to each other for causing the flexible mat section supported therebetween to be alternately tensioned and relaxed in a flip-flow action via movement of a first mat support relative to the second mat support adjacent thereto.