Rolling cutter drill bit

Details Rolling cutter drill bit Rolling cutter drill bit

1978-03-15

1979-06-26

Whitehead, Harold D.

Metal tools and implements, making

Blank or process

Drill

B21K 502

Patent

active

041589734

ABSTRACT:
A rolling cutter drill bit is disclosed which utilizes a main body having a threaded end for connection in a drill string, and a plurality of rolling cutter assemblies joined to the bottom of the bit body by means such as electron beam welding.

REFERENCES:
patent: 2171058 (1939-08-01), Crum
patent: 3850256 (1974-11-01), McQueen
patent: 3907191 (1975-09-01), Lichte

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