Roller bit

Details Roller bit Roller bit

1977-08-15

1979-10-30

Purser, Ernest R.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175337, 175372, 277 85, 308 82, E21B 910, E21C 1302

Patent

active

041725026

ABSTRACT:
A roller bit for rock drilling comprising a body having at least one stub axle and a geared cutting element rotatably mounted on said stub axle. The stub axle and cutting element have confronting spaced raceways for a plurality of rolling elements. A shoulder is formed adjacent one end of the raceway in the stub axle to axially fix the rolling elements in one direction. A locking ring is mounted in the cutting element having an abutment shoulder confronting the opposite axial end faces of the rolling elements and axially fixing the rolling elements in a direction in the opposite direction. The locking ring has an outer cylindrical peripheral surface engaging in a complementary cavity in the cutting element adjacent the raceway surface therein. The locking ring has a seat for mounting a resilient sealing member engaging the stub axle adjacent the raceway therein connected in the mounted state to the stub axle.

REFERENCES:
patent: 3707315 (1972-12-01), Goodfellow
patent: 3907191 (1975-09-01), Lichte
patent: 3921735 (1975-11-01), Dysart

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-16109