A - Human Necessities – 01 – D
Patent
A - Human Necessities
01
D
A01D 34/76 (2006.01) A01B 61/00 (2006.01) A01D 34/66 (2006.01) A01D 75/18 (2006.01)
Patent
CA 2189786
Each knife-carrying disk of a rotary cutterbar has a hub connected to a drive shaft through means of a shear device. In a first embodiment of the invention, the shear device is in the form of either a collar or a clamping member having internal splines received on a splined upper end of the drive shaft and having shearable cylindrical drive lugs engaged with complementary shaped openings provided in anupper surface of the disk hub. In another embodiment of the invention, the sheardevice is in the form of a ring-like shear insert having shearable inner splinesreceived on the splined upper end of the drive shaft and having outer splines engaged with a splined mounting hole of the disk hub.
Borden Ladner Gervais Llp
Deere & Company
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