04986367 is referenced by 58 patents and cites 18 patents.

A folding row marker includes first, inner and second, intermediate sections pivotally coupled together, as well as a third, outer section pivotally coupled to a distal end of the second section. A marker disc is disposed on the distal end of the third section and a hydraulic ram pivotally displaces the second section relative to the first section and further, via connecting linkage, pivotally displaces the third section relative to the second section during extension of the row marker to the use position and retraction of the row marker to the stored position. The first section is adapted for pivoting attachment to an end of a folding toolbar and linkage is provided to maintain all sections of the row marker under application of a positive force in a fixed, fully folded, compact and stable configuration when the toolbar is in the stored position.

Title
Folding row marker
Application Number
7/445048
Publication Number
4986367
Application Date
December 4, 1989
Publication Date
January 22, 1991
Inventor
Jon E Kinzenbaw
Williamsburg
IA, US
Agent
Emrich & Dithmar
Assignee
Kinze Manufacturing
IA, US
IPC
A01B 69/02
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