Patent ID: 7152540

Claim:
In combination, for an agricultural planter, a seed sensor having first and second seed sensing elements and a seed tube defining a seed passageway which curves downwardly and rearwardly from an upper ingress end toward a lower egress end, said seed tube comprising: a rearwardly curving downwardly extending forward wall, a rearwardly curving, downwardly extending rearward wall and opposing side walls, said forward wall having an interior surface; first aperture disposed through said forward wall and receiving the first seed sensor element; a second aperture disposed through said rearward wall in opposing relation to said first aperture and receiving the second seed sensor element; the seed tube further having an upper portion and a lower portion, said interior surface of said forward wall of said lower portion offset a distance forwardly of said interior surface of said forward wall of said upper portion; an overlap extending over at least a portion of said first aperture to prevent the first seed sensor element from projecting into said seed passageway beyond said interior surface of the offset lower forward wall.