Marker assembly having rigid link and cam assembly

Details Marker assembly having rigid link and cam assembly Marker assembly having rigid link and cam assembly

2009-06-30

2010-12-21

Pezzuto, Robert E (Department: 3671)

Earth working

With earth marker

C172S452000, C172S311000

Reexamination Certificate

active

07854271

ABSTRACT:
A marker assembly mountable to an agricultural implement includes a set of interconnected frame sections that can be pivoted with respect to one another to retract the marker assembly for transport and/or storage. The marker assembly has a support wheel that supports the marker assembly above the ground as the marker assembly is being deployed and when in an extended working position. The point at which the support wheel engages the ground is controlled by a rigid link and cam assembly. The rigid link has a first end connected to a first frame section and a second end connected to a lever arm that is connected to a link of a second frame section. The rigid link is operative to pull down on the lever arm when the marker assembly is being deployed so as to force the second frame section away from the first frame section. The amount the second frame section pulls away from the first frame section is determined by the cam assembly.

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