Element of an agricultural machine comprising an adjustable...

Planting – Drilling – Frame and planting-element arrangement

Reexamination Certificate

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C172S624500, C172S572000

Reexamination Certificate

active

07025009

ABSTRACT:
A working element of an agricultural machine mounted on a substantially horizontal beam by a linking structure comprising at least one upper arm and at least one lower arm, the working element being subjected on one hand to a depth control force directed toward the ground and on another hand to a ballasting exerted by a ballasting device comprising at least one spring.The ballasting device consists of a handle and at least one rack, the handle comprising at least one rod intended to collaborate with the rack.

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patent: 5529128 (1996-06-01), Peterson et al.
patent: 5555824 (1996-09-01), Stufflebeam et al.
patent: 5601147 (1997-02-01), Lowe et al.
patent: 6068061 (2000-05-01), Smith et al.
patent: 0 155 692 (1985-09-01), None

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