Roller cutter drill bit having a texturized seal member

Details Roller cutter drill bit having a texturized seal member Roller cutter drill bit having a texturized seal member

1984-09-12

1986-10-28

Levy, Stuart S.

Bearings

Rotary bearing

Roller drill bit

384152, 384489, 175371, 277208, 277215, F16C 3374, E21B 1022, F16J 900

Patent

active

046195343

ABSTRACT:
A rotary drill bit comprising a bit body having at least one depending leg at its lower end having a generally cylindrical bearing journal, a roller cutter of generally conical shape having a recess therein receiving the journal a bearing system for rotatably mounting the roller cutter on the journal, and a lubrication system for providing lubricant to the bearing system comprising a reservoir of lubricant, passaging in the bit body for fluid communication between the reservoir and the bearing system, and a seal member between the roller cutter and the journal blocking flow of lubricant out of the bit body. The seal member is of annular shape and is held in a seal cavity between the roller cutter or the journal, with an annular engagement face thereof in sealing, sliding frictional engagement with one of the bearing members. The engagement face of the seal member has a surface texture such that, with the seal member compressed against the stated one bearing member, pockets are formed in the face thereof for holding lubricant for lubricating the seal member, yet the face is effective to substantially block leakage past the seal member.

REFERENCES:
patent: 2489715 (1949-11-01), Mark, Jr. et al.
patent: 3365247 (1968-01-01), Ferrand
patent: 3586342 (1968-11-01), Staab
patent: 3765495 (1973-10-01), Murdoch et al.
patent: 3822068 (1974-07-01), Litherland
patent: 3973781 (1976-08-01), Grorich
patent: 4157835 (1979-06-01), Kahle et al.

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1343479