Patent ID: 11944025
Assignee: OSMUNDSON MFG. CO.
Field: Other special machines (Mechanical engineering)
Classification: CPC A | IPC A

Claim 16:
17. A ground engaging agricultural tillage blade apparatus comprising:
at least two discs, each disc comprising an outer periphery extending along a circumference of the disc and a central opening adapted to be attached to an implement for rotation about a substantially horizontal axis of rotation;
a plurality of step plane notches disposed in the outer periphery of each disc alternating with a plurality of edge segments extending along the disc circumference, each step plane notch comprising a width and a major section comprising a uniform depth;
wherein each edge segment comprises a length that is greater than the width of each step plane notch;
wherein the width of each step plane notch is the same;
wherein the uniform depth of the major section is the same for each step plane notch;
wherein the uniform depth of the major section of each step plane notch is 50% or less of the width of the respective step plane notch;
wherein at least the major section of each step plane notch comprises a sharpened edge; and
wherein a spacer spool is disposed on a shaft between the at least two discs, the spacer spool extending radially outwardly from the central opening.