Drill bit

Details Drill bit Drill bit

1988-08-30

1989-06-13

Novosad, Stephen J.

Boring or penetrating the earth

Bit or bit element

Plural separable cutter elements

175411, 175413, E21B 1042, E21B 1046

Patent

active

048383660

ABSTRACT:
A drill bit for drilling holes in earth formations including a bit body having an integral shank for connection to a drilling machine stem and integral radial mounting wings for supporting removable cutter blades, and a removable cutter blade secured on each wing, each cutter blade having a tungsten carbide front drilling face arranged at a negative rake angle and an outside side face having a forward cutting edge of tungsten carbide and a relieve angle extending rearwardly and inwardly toward the axis of the bit for minimizing the mass of the bit exposed to the bore hole wall during drilling for reducing the temperature of bit. The bit has a longitudinal bore and lateral angular bores for air drilling fluid.

REFERENCES:
patent: 1557743 (1925-10-01), Terrill
patent: 2604305 (1952-07-01), Livingstone
patent: 2861779 (1958-11-01), White
patent: 3106973 (1963-10-01), Christensen
patent: 3463256 (1969-08-01), White
patent: 3545554 (1970-12-01), Bardwell
patent: 3672455 (1972-06-01), Foster, Jr.
patent: 4026372 (1977-05-01), Hampson
patent: 4252202 (1981-02-01), Purser, Sr.

Affiliated with

Also associated with

Rating

Drill bit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drill bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill bit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1269968