Wavy farming disc

Earth working – Rolling – rotating or orbitally moving tool – Detailed disk structure per se

Reexamination Certificate

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Reexamination Certificate

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07143838

ABSTRACT:
A wavy farming disc for working the soil in farming activities, particularly in no-till works for seeding, wherein the disc comprises a plate having a peripheral circular cutting edge and a central portion, and a plurality waves in the plate with the waves extending radially inwardly from the cutting edge and defining a sawtooth pattern.

REFERENCES:
patent: 323344 (1885-07-01), Dow
patent: 507894 (1893-10-01), Emans
patent: 2575321 (1951-11-01), Traver
patent: 3559748 (1971-02-01), Shelton
patent: 4256184 (1981-03-01), Squibb
patent: 4538688 (1985-09-01), Szucs et al.
patent: 5649602 (1997-07-01), Bruce
patent: 5957217 (1999-09-01), Gunnink
patent: 6644224 (2003-11-01), Bassett
patent: 2002/0038620 (2002-04-01), Gentilhomme

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