04825957 is referenced by 49 patents and cites 12 patents.

An improved breakaway assembly for preventing damage to markers for agricultural equipment when such markers encounter obstacles during use. The improved breakaway assembly includes an elongated member for holding the marker in place, imparting only tension forces onto such elongated member and minimizing the amount of shearing forces typically encountered by prior art shear pins. The elongated member is generally positioned tangentially to an arc formed by rotation of the point of attachment of such elongated member about the vertical axis on which the marker pivots when an obstruction is encountered.

Title
Breakaway mechanism for a row marker
Application Number
592554
Publication Number
4825957
Application Date
August 12, 1986
Publication Date
May 2, 1989
Inventor
William E Erickson
Milan
IL, US
Gregory S White
Moline
IL, US
Agent
Henderson & Sturm
Assignee
Deere & Company
IL, US
IPC
A01B 39/14
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