Patent 10914050 was granted and assigned to Caterpillar Inc. on February, 2021 by the United States Patent and Trademark Office.
A blade assembly includes 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. A plurality of bushings are disposed in a corresponding one of the plurality of shank receiving bores.