Agricultural row marker

Details Agricultural row marker Agricultural row marker

1982-09-27

1985-07-02

Johnson, Richard J.

Earth working

With earth marker

172456, A01B 1700

Patent

active

045262357

ABSTRACT:
A folding marker arm for an agricultural implement includes a swing link and a single hydraulic cylinder pivotally connected between the frame and the swing link. A push/pull link is mounted between the swing link and the marker arm. As the cylinder extends to rotate said marker toward the storage position and the marker arm passes through top dead center the design decelerates the marker arm as it approaches the storage position to avoid having the marker arm slam into the frame.

REFERENCES:
patent: 3158204 (1964-11-01), Martin
patent: 3797580 (1974-03-01), Roth
patent: 3944001 (1976-03-01), Warner
patent: 4050523 (1977-09-01), Poland
patent: 4207950 (1980-06-01), Kinzenbaw
patent: 4281720 (1981-08-01), Tusing
patent: 4320805 (1982-03-01), Winter
patent: 4328869 (1982-05-01), Perelli
patent: 4336846 (1982-06-01), Boetto
patent: 4355690 (1982-10-01), Jensen

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