04224998 cites 10 patents.

A cultivating implement has a row of tined members that have resilient arms and a resilient tines with coil supports that can deflect to mitigate stone damage. The members are mounted on a frame portion that is turntable about an axis extending transverse to the direction of travel, against resilient opposition. Each member includes a hub with bearings protected by an opposing flange and plate structure. Drive to the members is transmitted by shafts housed in the hollow frame portion and the shafts are supported in bearings connected to support members connected to the walls of the frame portion.

Title
Soil cultivating implements
Application Number
5/859849
Publication Number
4224998
Application Date
December 12, 1977
Publication Date
September 30, 1980
Inventor
Cornelis van der Lely
Zug
CH
IPC
A01B 33/06
View Original Source