Cutter-bit assemblies

Details Cutter-bit assemblies Cutter-bit assemblies

1987-03-11

1988-08-09

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Miscellaneous

37142A, 299 93, E21B 1000

Patent

active

047623721

ABSTRACT:
A cutter-bit assembly employs an arcuate wedge to secure a cutter-bit within a pocket of a holder. The wedge fits into a tapered gap between complementary curved surfaces of the holder and the cutter-bit shank. A projecting insert carried by the shank mates with a serrated portion on the wedge. Contact is established between the wedge and the curved surfaces of the holder and the shank over outer regions separated by non-contacting clearances.

REFERENCES:
patent: 3063691 (1962-11-01), Osgood
patent: 4455771 (1984-06-01), Poncin
patent: 4456307 (1984-06-01), Merten et al.
patent: 4609227 (1986-09-01), Wild et al.
patent: 4626034 (1986-12-01), Brever et al.

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