Conveyors: fluid current – Ambulant or portable – Vehicle mounted
Reexamination Certificate
2003-08-26
2008-08-19
Novosad, Christopher J. (Department: 3641)
Conveyors: fluid current
Ambulant or portable
Vehicle mounted
C406S067000, C406S195000, C111S174000
Reexamination Certificate
active
07413387
ABSTRACT:
A pneumatic distributor of granular and/or powdery materials includes a main distribution duct having a first end in the region of which an air-flow is injected into the duct under pressure, and a second end. The main duct includes respective adjacent converging-diverging portions, with reference to the direction of the air-flow, defining a Venturi duct. A dosing device is provided for delivering a metered quantity of material into the main duct in the region of the narrow cross-section of the Venturi duct, for the mixing of the material into the air-flow and the entrainment of the mixture obtained towards the second end. The distributor includes at least one auxiliary duct, bypassing the Venturi duct, in order to connect a section of the main duct disposed upstream of the Venturi duct to a section of the main duct disposed downstream of the Venturi duct.
REFERENCES:
patent: 5980163 (1999-11-01), Gregor et al.
patent: 2003/0133759 (2003-07-01), Winther
patent: 1165790 (1969-10-01), None
International Search Report for PCT International Application No. PCT/IT03/00518.
Gaspardo Seminatrici S.P.A.
Novosad Christopher J.
RatnerPrestia
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