Seed tube for an agricultural planter

Details Seed tube for an agricultural planter Seed tube for an agricultural planter

2009-02-23

2010-10-19

Novosad, Christopher J. (Department: 3641)

Planting

Drilling

Having depositor feature

Reexamination Certificate

active

07814849

ABSTRACT:
A seed tube having a front wall defining a portion of a seed pathway therethrough and having a concave interior surface having a first radius of curvature. The concave surface may extend only partially across the width of the front wall, such that a portion of the front wall lacks a substantially concave surface. Alternatively, the entirely of the front wall defining a portion of the seed pathway may have a concave surface. In this embodiment, the front wall has an asymmetrical cross-section. For example, a first portion of the concave surface may have a first radius of curvature and a second portion of the concave surface may have a second radius of curvature, with the second radius of curvature being greater than the first radius of curvature.

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