Rotary drill bit

Details Rotary drill bit Rotary drill bit

1976-06-24

1978-08-29

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Magnetized or with magnet

175410, 407 51, 407118, 407119, E21B 936

Patent

active

041097378

ABSTRACT:
A rotary drill bit for rock drilling comprising a plurality of cutting elements mounted by interference-fit in recesses in the crown of the drill bit. Each cutting element comprises an elongated pin with a thin layer of polycrystalline diamond bonded to the free end of the pin.

REFERENCES:
patent: 1506119 (1924-08-01), Hansen
patent: 2121202 (1938-06-01), Kilgore
patent: 2582231 (1952-01-01), Catallo
patent: 3095053 (1963-06-01), Pistole et al.
patent: 3407445 (1968-10-01), Strong
patent: 3702573 (1972-11-01), Nemeth
patent: 3745623 (1973-07-01), Wentorf, Jr.
patent: 4006788 (1977-02-01), Garner
patent: 4014395 (1977-03-01), Pearson

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