Core bit

Details Core bit Core bit

1974-10-24

1976-01-27

Leppink, James A.

Boring or penetrating the earth

Bit or bit element

Core forming type

E21B 916, E21C 1302

Patent

active

039346625

ABSTRACT:
An impact type of anvil core bit includes a body having a central opening through its bottom drilling face, a plurality of spaced cutters, such as sintered tungsten carbide buttons, being secured to the body and extending downwardly from the face to drill against the bottom of the bore hole outwardly of the central opening, the cutters including inner cutters for forming the core in the bottom of the hole, a cutter ring being secured to the body and circumscribing the opening above the bottom of the hole to shape the core for movement into the central opening.

REFERENCES:
patent: 2174980 (1939-10-01), Heath et al.
patent: 2865607 (1958-12-01), Tilden
patent: 2893696 (1959-07-01), McGuire
patent: 3071201 (1963-01-01), Phipps
patent: 3185228 (1965-05-01), Kelly
patent: 3283836 (1966-11-01), North et al.
patent: 3509953 (1970-05-01), Becker
patent: 3743036 (1973-07-01), Feenstra et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1807167