Patent ID: 8375874
Filing Date: 2013-02-19
Classification: A01C

Abstract:
1. A seed metering device for an agricultural seeder, comprising: a meter housing having a seed pool area and a seed delivery opening that allows a supply of seed to be delivered into the seed pool area; a seed disk covering an open side of said meter housing, said seed disk having a series of pockets spaced around an outer circumference thereof, said seed disk being mounted on a center shaft that provides driving force to rotate the seed disk relative to the meter housing, said seed disk being arranged so that as the seed disk rotates the pockets of the seed disk pass through the seed pool and pick up seeds; an air inlet provided in said meter housing to receive a supply of positive pressure air into the meter housing for holding individual seeds in the pockets of the seed disk; a brush assembly provided within the meter housing to separate the housing into a pressurized zone where the seed is loaded and held in the pockets of the seed disk and a non-pressurized zone where the seed can be dropped from the seed disk; a multi lobe disk seat mounted on the center shaft, said disk seat comprising a flat surface, a raised center protruding axially from the flat surface, and a plurality of tapered lobes that extend outwardly from the raised center; and said seed disk has a flat face that abuts the flat surface of the disk seat, an open center that receives the raised center of the disk seat, and a plurality of lobe sockets that receive the tapered lobes of the disk seat.