Method of making a rotary rock bit

Details Method of making a rotary rock bit Method of making a rotary rock bit

1980-08-25

1982-09-21

Parker, Roscoe V.

Metal tools and implements, making

Blank or process

Drill

E21B 910

Patent

active

043500609

ABSTRACT:
A method of making a rotary rock bit is described comprising the steps of forming a one piece bit body having at least two legs extending downwardly therefrom, drilling a bore through each leg, providing a cone cutter for each leg, positioning each cone cutter to be aligned with the bore of a respective leg, inserting a separate journal pin through the bore of each leg until a portion extends into the cavity of the registering cone cutter, providing a thrust element into the cavity of each cone cutter and retaining it therein to form subassemblies, and securing each journal pin to the bore of the respective leg.

REFERENCES:
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patent: 2038388 (1936-04-01), Sherman
patent: 2091193 (1937-08-01), Cox
patent: 2094856 (1937-10-01), Smith et al.
patent: 2490151 (1949-12-01), Noble et al.
patent: 3239431 (1966-03-01), Knapp
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patent: 4043411 (1977-08-01), Lichte
patent: 4098150 (1978-07-01), Penny et al.
patent: 4127043 (1978-11-01), Evans
patent: 4145094 (1979-03-01), Vezirian
patent: 4157122 (1979-06-01), Morris

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