Slurry fertilizer applicator

Planting – Liquid or gas soil treatment – Drilling machines

Reexamination Certificate

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Reexamination Certificate

active

06973884

ABSTRACT:
An applicator unit for applying slurry fertilizer beneath the soil with reduced soil displacement includes a spring-cushioned main mounting shank and a forward spring-biased colter. A narrow applicator shank is mounted to the main mounting shank by a pair of vertically spaced bolts, including a lower shear bolt, at a location just above the surface of the soil. The sweep shank is generally upright and includes a nose portion at a lower leading edge which includes a generally blunt lower portion and a tapered leading edge for forming a furrow without tilling the soil. The furrow is formed in three stages by the blunt nose pad, the upright tapered leading edge of the sweep shank, and by a pair of mounting plates carrying the slurry tube and widening the top of the furrow.

REFERENCES:
patent: 4592294 (1986-06-01), Dietrich et al.
patent: 4834189 (1989-05-01), Peterson et al.
patent: 5357883 (1994-10-01), Depault
patent: 5566627 (1996-10-01), Pryor
patent: 5865131 (1999-02-01), Dietrich et al.

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