04846084 is referenced by 20 patents and cites 23 patents.

A leveling linkage is provided on a planter unit of a planter implement. Each planter unit includes a leveling spring for supporting a back end of the plant unit in its raised, transport position. The leveling linkage is connected to a mounting bracket and a draft frame of the planter unit, which move relative to each other when the implement is raised and lowered. The leveling linkage extends the leveling spring when the implement is in its transport position and retracts the leveling spring when the implement is in its work position.

Title
Leveling linkage for planter units
Application Number
7/158691
Publication Number
4846084
Application Date
February 22, 1988
Publication Date
July 11, 1989
Inventor
Arris A Sigle
H.C. 1, Box 2, Luray, 67649-9743
KS, US
Agent
Litman McMahon & Brown
IPC
A01C 7/08
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