Thrust plugs for rotary cone air bits

Details Thrust plugs for rotary cone air bits Thrust plugs for rotary cone air bits

1996-03-26

1997-07-01

Hannon, Thomas R.

Bearings

Rotary bearing

Roller drill bit

175371, 384 92, 384425, F16C 3300

Patent

active

056429428

ABSTRACT:
A radially disposed thrust bearing assembly for air cooled and lubricated mining type rotary cone rock bits consists of a first non-rotating radially disposed steel thrust bearing disc and an apposed, non-rotating carbide thrust bearing disc. One of the thrust bearing discs is pressed into a disc retention socket formed in the end of a spindle bearing extending from the end of a main axially aligned bearing cantilevered from a leg of the bit and the other thrust bearing disc is pressed into a disc retention socket formed in the rotary cone. An edge of the carbide disc is formed with large valleys and peaks, the robust undulations resist cracking when the carbide thrust bearing disc is pressed into its respective socket. Unique air passages and channels are formed in the main and spindle bearings to direct cooling air to the apposed thrust bearing discs.

REFERENCES:
patent: 3480341 (1969-11-01), Hickernell
patent: 3720274 (1973-03-01), McCallum
patent: 4098358 (1978-07-01), Klima
patent: 4270812 (1981-06-01), Thomas
patent: 4416554 (1983-11-01), Pribbenow
patent: 4421184 (1983-12-01), Mullins
patent: 4428442 (1984-01-01), Steinke
patent: 4549820 (1985-10-01), Mullins
patent: 5148879 (1992-09-01), Hooper

Affiliated with

Also associated with

Rating

Thrust plugs for rotary cone air bits does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Thrust plugs for rotary cone air bits, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thrust plugs for rotary cone air bits will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-590838