Folding boom

Details Folding boom Folding boom

1999-04-05

1999-11-30

Novosad, Christopher J.

Earth working

With earth marker

172456, A01B 6902

Patent

active

059925345

ABSTRACT:
A folding boom for a tri-fold row marker for an agricultural implement. The boom comprises three segments, an inboard segment pivotally coupled to the toolbar, a middle segment pivotally coupled to the inboard segment, and an outboard segment pivotally coupled to the middle segment. Control of the boom during folding and unfolding is maintained by a toggle link mechanism having a cam a cam follower and a system of pivots and linkages. Dynamic forces are dampened at both ends of the folding and unfolding by use of a cushion hydraulic cylinder with flow limiting structure at each end of the cylinder stroke.

REFERENCES:
patent: 4207950 (1980-06-01), Kinzenbaw
patent: 4449590 (1984-05-01), Williamson
patent: 4986367 (1991-01-01), Kinzenbaw
patent: 5379847 (1995-01-01), Snyder

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