Patent ID: 8863413

Claim:
A suction head for relocating matter, the suction head comprising: a first conduit having an inlet; a second conduit having an inlet and an outlet, the second conduit being in series and in fluid communication with the first conduit, the outlet of the second conduit opening to the inlet of the first conduit via a mixing region; a third conduit having an inlet and an outlet, the outlet of the third conduit opening to the first conduit via a restriction and the mixing region, wherein a fluid may be fed under pressure through the inlet of the third conduit and conveyed to the mixing region via the restriction to cause a reduction in the pressure of the fluid passing into the mixing region, the reduction in pressure of the fluid causing matter to be sucked through the inlet of the second conduit and conveyed though the second conduit to the mixing region, the matter being entrained with the fluid and exiting the mixing region via the first conduit; and means for promoting a generally helical flow of the fluid through the restriction.