04674578 is referenced by 51 patents and cites 43 patents.

A floating marker arm mechanism is disclosed. The marker arm mechanism comprises a bifolded marker arm pivotably mounted on a wheeled farm implement. The marker arm comprises first and second elongated members, pivotally connected together. The marker arm folds and is generally vertically disposed when not in use. When in use, the marker arm is extended outwardly from the wheeled implement and downwardly toward the ground. The marker arm mechanism of the present invention further includes a pivotable bracket removably affixed to the wheeled implement. The marker arm is pivotally mounted on the bracket. The bracket permits the arm to "float" between upper and lower positions when extended outwardly toward the ground to permit a marker disc mounted on the free end of the arm to follow ground contours if any.

Title
Floating marker arm mechanism
Application Number
6/817455
Publication Number
4674578
Application Date
January 9, 1986
Publication Date
June 23, 1987
Inventor
John F Stufflebeam
Romeoville
IL, US
Eugen Bexten
Ancaster
CA
Agent
Dressler Goldsmith Shore Sutker & Milnamow
Assignee
J I Case Company
WI, US
IPC
A01B 69/02
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