Roller cutter

Details Roller cutter Roller cutter

1976-01-27

1977-01-25

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175 53, 308 18, 308 31, E21B 908

Patent

active

040046443

ABSTRACT:
In the saddle structure of the improved drill bit cutter assembly of the invention both spaced-apart legs are provided with bores each extending through the leg to receive a clamping bolt. These bores extend in directions including between them an angle of up to 90.degree.. The shaft-receiving recess, between the legs, has a polygonal shape complementing that of the end portion of the shaft.

REFERENCES:
patent: 3054466 (1962-09-01), Wagnon et al.
patent: 3612196 (1971-10-01), Dixon
patent: 3747999 (1973-07-01), Justman
patent: 3749188 (1973-07-01), Schumacher, Jr.
patent: 3835944 (1974-09-01), Bingham

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