| 摘要 |
<p>A power rake attachment includes a rotary drum and a plurality of bit assemblies mounted on an outer surface of the drum. Each bit assembly includes a hollow holder affixed to the other surface, and a cutter bit disposed in the holder. The cutter bit includes a front cutting heat and a rear shank. The shank extends into the holder, and the cutting head projects longitudinally past a front end of the holder. A retainer retains the shank within the holder, and wear sleeve is disposed around an outer surface of the holder. The cutter bit includes a laterally outwardly projecting sleeve-retaining portion which extends laterally past the outer surface of the holder and into overlying relationship to a front end of the holder to retain the wear sleeve longitudinally on the holder.</p> |
