Axial retainer for a cutter in a rotary drill bit

Details Axial retainer for a cutter in a rotary drill bit Axial retainer for a cutter in a rotary drill bit

1988-02-25

1990-02-13

Hannon, Thomas R.

Bearings

Rotary bearing

Roller drill bit

175369, F16C 1712, E21B 1022

Patent

active

049001647

ABSTRACT:
A retainer for axially retaining a cutter on the journal pin of a rotary drill bit body includes a plurality of arcuate sliding keys and a single initial tensioning ring accommodated astride an annular groove formed in the peripheral outer wall surface of the journal pin and a corresponding annular groove formed in the inner peripheral wall surface of the cutter. When the cutter is mounted on the journal pin, the initial tensioning ring functions to urge the sliding keys into pressured contact with the cutter groove when the two grooves are in registration. Not only is assembly facilitated, but damage to the sliding keys that might otherwise be caused by any excessive axially directed force applied to the sliding keys during operation of the drill bit is prevented by allowing the sliding keys to recede within the annular groove of the journal pin.

REFERENCES:
patent: 1835523 (1931-12-01), Reed
patent: 1865706 (1932-07-01), Reed
patent: 4344658 (1982-08-01), Lederwood, III
patent: 4444518 (1984-04-01), Schramm et al.
patent: 4506997 (1985-03-01), Schramm et al.
patent: 4511008 (1985-04-01), Brunson

Affiliated with

Also associated with

Rating

Axial retainer for a cutter in a rotary 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 Axial retainer for a cutter in a rotary drill bit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Axial retainer for a cutter in a rotary drill bit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1163714