Patent attributes
A seed meter has a housing forming a seed-holding supply chamber and an outlet chamber and a thin feed wheel rotatable in the housing about an axis and formed centered on the axis with an annular array of radially outwardly open and axially throughgoing seats each dimensioned to hold a respective seed. Structure in the housing is positioned to prevent seeds from moving radially outward from the respective seats in the supply chamber but not in the outlet chamber. A pressure differential is applied across the wheel to move seeds in the supply chamber into the seats so that the seeds are expelled from the seats in the outlet chamber. The seeds are fed, one at a time into a seed conduit and/or to a conveyor for transfer to the seed conduit or to the down pipes of the seed coulters.
