Two-piece rotatable cutting bit

Details Two-piece rotatable cutting bit Two-piece rotatable cutting bit

1992-07-15

1993-11-16

Britts, Ramon S.

Boring or penetrating the earth

Bit or bit element

Specific or diverse material

299 92, E21C 3518

Patent

active

052614999

ABSTRACT:
A two-piece rotatable cutting bit which comprises a shank and a nose. The shank has an axially forwardly projecting protrusion which carries a resilient spring clip. The protrusion and spring clip are received within a recess in the nose to rotatable attach the nose to the shank.

REFERENCES:
patent: 3397012 (1968-08-01), Krekler
patent: 3476195 (1969-11-01), Galle
patent: 3519309 (1970-07-01), Engle et al.
patent: 3720273 (1973-03-01), McKenry et al.
patent: 3752515 (1973-08-01), Oaks et al.
patent: 3830321 (1974-08-01), McKenry et al.
patent: 3865437 (1975-02-01), Crosby
patent: 3932952 (1976-01-01), Helton et al.
patent: 3990525 (1976-11-01), Penny
patent: 4084856 (1978-04-01), Emmerich et al.
patent: 4201421 (1980-05-01), Den Besten et al.
patent: 4346934 (1982-08-01), College et al.
Kennametal Drawing QD-0224 (Dec. 15, 1976) for a 11.00 " Dredge Tooth.
Kennametal Drawing QD-0225 (Dec. 13, 1976) for a Shatt for a Dredge Tooth.
Kennametal Drawing SK-1227 (Jun. 30, 1976) for a Dredge Cutter with Thrust Bearing.
Kennametal Drawing Sk-1219 (Jun. 16, 1976) for a Dredge Cutter.
CMI Drawing-Assem-Bit & Holder (Jul. 13, 1984).

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