Patent ID: 7509915

Claim:
A pneumatic agricultural product delivery system comprising: at least one product supply chamber; a furrow opening device configured to engage the ground to create a furrow; at least one pressure reducing device comprising a body having an opening on top, an outlet on bottom of said body and an inlet extending tangentially to radius of one side of said body; wherein product and air rotates toward an inner wall of body within pressure reducing device; an adjustable exhaust tube extending from said opening on top of said body configured to slide within the opening of said pressure reducing device; wherein air speed is adjustable; a plurality of tubes providing an interior passage extending from at least one product supply chamber to at least one inlet of said pressure reducing device, wherein a pneumatic pressure source is pneumatically coupled to the interior passage to supply pressurized air to the interior passage to move product within the interior passage; a product placement tube extending from said outlet of the pressure reducing device to a location adjacent the furrow opening device; and wherein said pressure reducing system comprises at least one cyclone.