Patent ID: 7997416

Claim:
An oscillating screen comprising a screening container inside which a screening means is disposed lying on a determinate screening plane (P), coinciding or inclined with respect to a horizontal oscillation plane (X), and oscillation means able to move said screening container with respect to a fixed supporting structure, so that said screening container effects a rotational motion on a controlled circular trajectory lying on said horizontal oscillation plane (X), wherein said oscillation means comprises a first movement unit provided with a first rotary shaft associated with a first eccentric element cooperating with said screening container, wherein said fixed supporting structure is provided on the periphery with supporting legs, distinct from the oscillation means, able to support the screening container and having relative suspension and shock-absorber means, of the hydraulic or oil-dynamic type, disposed between said supporting legs and said screening container, wherein said oscillation means also comprises a second movement unit, having at least a second rotary shaft provided with a second eccentric element cooperating with said screening container, and aligned with the first eccentric element along a longitudinal axis (X′) disposed substantially coincident with the center line of said lower surface of said screening container, and wherein a transmission means connects said first rotary shaft and said second rotary shaft with each other, so that they have the same angular velocity.