Patent ID: 7992944

Claim:
A degradation assembly, comprising: a stationary portion have a first end and a second end spaced apart from said first end, said stationary portion being non-rotatable during use of said degradation assembly, said stationary portion including a shank proximate said second end of said stationary portion, said shank being configured to couple said degradation assembly to a block on a driving mechanism; a rotary portion having a first end and a second end spaced apart from said first end, said rotary portion including: a tip positioned proximate said first end of said rotary portion, said tip including a diamond material having a substantially conical shape; a shield positioned proximate said second end of said rotary portion, said shield being coupled to said first end of said stationary portion; a bolster positioned between and coupled to said tip and said shield; and, an indexing mechanism configured to substantially prevent said rotary portion from rotating relative to said stationary portion during use of said degradation assembly and to allow manual rotation of said rotary portion relative to said stationary portion when said degradation assembly is not in use.