Frustum cutting bit arrangement

Details Frustum cutting bit arrangement Frustum cutting bit arrangement

1999-02-23

2000-08-15

Schoeppel, Roger

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

Rolling or rotatable bit

299113, E21C 35183

Patent

active

061024864

ABSTRACT:
A frustum cutting insert having a cutting end and a shank end and the cutting end having a cutting edge and inner walls defining a conical tapered surface. First walls in the insert define a cavity at the inner end of the inner walls and second walls define a plurality of apertures extending from the cavity to regions external the cutting insert to define a powder flow passage from regions adjacent the cutting edge, past the inner walls, through the cavity and through the apertures.

REFERENCES:
patent: 4828436 (1989-05-01), Briese
patent: 4893967 (1990-01-01), Briese
patent: 4993888 (1991-02-01), Briese
patent: 5873423 (1999-02-01), Briese
patent: 6026918 (2000-02-01), Briese

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