Land erosion protection on a rock cutter

Details Land erosion protection on a rock cutter Land erosion protection on a rock cutter

1975-03-24

1976-04-27

Abbott, Frank L.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175337, E21C 1301, E21B 935

Patent

active

039528154

ABSTRACT:
Cone shell erosion between inserts is substantially reduced by positioning small, flat-topped compacts in the vulnerable cutter shell areas. At least one row of substantially outwardly projecting formation contacting inserts are located on the rock cutter. A row of substantially flush compacts are embedded in the cutter shell alternately positioned between the outwardly projecting formation contacting inserts.

REFERENCES:
patent: 2121202 (1938-06-01), Killgore
patent: 3126067 (1964-03-01), Schumacher
patent: 3140748 (1964-07-01), Engle et al.
patent: 3389761 (1968-06-01), Ott
patent: 3461983 (1969-08-01), Hudson et al.
patent: 3628616 (1971-12-01), Neilson
patent: 3727705 (1973-04-01), Newman
patent: R3690 (1869-10-01), Leschot

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