Radial rock bit seal

Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

277 84, 277 92, 277 95, 277166, F16J 1524

Patent

active

045374090

ABSTRACT:
An improved radial rock bit seal for utilization with earth boring drill bits which employ rolling cutters mounted on shafts extending from face surfaces on the drill bit body. The improved seal includes a cylindrical body which is disposed around each shaft and which has two axially displaced seal portions. The first seal portion includes an elastomeric sealing surface which is disposed in sealing and sliding engagement with the shaft. The second seal portion includes an elastomeric sealing surface which is disposed in sealing and sliding engagement with the rolling cutter. A flexible juncture between each of the two seal portions permits the seal portions to move somewhat independently in response to loading of the rolling cutter and this permits both seals to maintain substantially the same seal compression in spite of such loading. In a preferred embodiment of the present invention, a rigid ring is utilized in conjunction with the elastomeric sealing surface that contacts the rolling cutter and is sized to maintain a selected amount of compression on the elastomeric sealing surface that contacts the inner surfaces of the cutter and an additional ring is used in conjunction with the elastomeric sealing surface that contacts the shaft so as to center the seal around the shaft and to cause the elastomeric sealing surface to form a seal around the shaft.

REFERENCES:
patent: 3389760 (1968-06-01), Morris
patent: 3462159 (1969-08-01), Baumann et al.
patent: 3944306 (1976-03-01), Neilson
patent: 4344629 (1982-08-01), Oelke

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Radial rock bit seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

     

Profile ID: LFUS-PAI-O-1998954

All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.