Patent ID: 11882778
Assignee: DEERE & COMPANY
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 10:
11. A disk assembly for use with a tillage machine having a main frame, the disk assembly comprising:
a support element configured to be coupled to the main frame;
an arm assembly extending from the support element;
a disk coupled to and supported by the arm assembly, the disk including
a body portion rotatable about an axis of rotation, the body portion having a circumferential edge and a concavity with a first radius defined from a point on the axis of rotation, the first radius being constant about the axis of rotation,
a hub portion axially offset from a contour of the body portion, the hub portion including a wall continuous with the body portion, an abutment face continuous with the wall, and a recess defined by the wall and the abutment face, the abutment face having a concavity with a second radius defined from a point on the axis of rotation, the abutment face being complementary to a mating surface of the arm assembly, and

an aperture extending through the hub portion and centered about the axis of rotation.