Downhole drill bit and bit coupling

Details Downhole drill bit and bit coupling Downhole drill bit and bit coupling

1989-12-15

1990-10-16

Novosad, Stephen J.

Boring or penetrating the earth

Tool removable or insertable through or around driving or...

Laterally shiftable cutter element movable through shaft

175262, 175292, 175415, 408180, 408188, E21B 1026, E21B 1066

Patent

active

049628224

ABSTRACT:
A downhole impact drill having a drill bit head with a drill bit sector for drilling an enlarge hole upon rotation of the drill. The bit is mounted within a chuck for movement between a retracted, working position in which the bit is coaxially mounted for drilling and an extended, non-working position in which the bit is loosely mounted within the chuck to permit the bit to swing laterally to reduce the diameter of the drill bit head envelope. In its extended, non-working position, the bit is supported on the chuck at a 3.degree. angle at which the drill bit sector is positioned inwardly to facilitate installation and withdrawal of the drill.

REFERENCES:
patent: 3174563 (1963-02-01), Edbom et al.
patent: 3416616 (1967-03-01), Ahlgren
patent: 3648789 (1972-03-01), Ericksson
patent: 3753470 (1973-08-01), Lagerstrom et al.
patent: 3848683 (1974-11-01), Persson
patent: 3870114 (1975-03-01), Pulk et al.
patent: 4408669 (1983-10-01), Wiredal
patent: 4440244 (1984-04-01), Wiredal
patent: 4545443 (1985-10-01), Wiredal
patent: 4620600 (1986-11-01), Persson
patent: 4770259 (1988-09-01), Jansson
patent: 4836306 (1989-06-01), Barrows

Affiliated with

Also associated with

Rating

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

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-844872