Patent ID: 8336471
Filing Date: 2012-12-25
Classification: A01C

Abstract:
1. An agricultural machine comprising: a structural member; a pressure-creating member; and at least one drilling unit comprising: wherein the drilling unit is movably connected with the structural member, wherein the seed metering device is fixedly connected with the support device of the drilling unit, wherein the seed metering device comprises a chamber for seeds and a seed metering element wherein, by means of a driving device, the seed metering element is arranged to transport seeds to a seed metering line, wherein the chamber is arranged to be supplied with a positive pressure from the pressure-creating member wherein the seed metering element constitutes a wall limiting the chamber, wherein the wall is arranged with, wherein the holes connect the chamber with the surroundings to attach and transport seeds at said holes of the seed metering element by the pressure difference developed hereby, and wherein the seed metering line has an inlet in the chamber creating an air flow for the transportation of the seeds from the chamber through the seed metering line to the drill furrow by said positive pressure in the chamber.