Patent ID: 11926989
Assignee: CATERPILLAR INC.
Field: Civil engineering (Other fields)
Classification: CPC E  A | IPC E

Claim 0:
1. A blade assembly comprising:
an adapter board including a lower tool bit attachment portion, terminating in a lower adapter board free end,
the lower adapter board free end defining a bottom surface defining a plurality of shank receiving bores; and

a plurality of bushings,
wherein each one of the plurality of bushings is disposed in a corresponding one of the plurality of shank receiving bores,
wherein the plurality of shank receiving bores includes counterbore portions, and
wherein each of the plurality of bushings is disposed in one of the counterbore portions,
each of the counterbore portions defining a counterbore diameter,
each of the plurality of shank receiving bores further including a reduced diameter portion defining a reduced diameter that is less than the counterbore diameter, and
the reduced diameter portion extending from the counterbore portion and including a plurality of axially extending splines.